CHINA SOUTHERN AIRLINES CO LTD (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 1001 - Document - Document and Entity Information Network

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http://www.csair.com/taxonomy/role/DocumentandEntityInformation
2 Document Information [Table] Table

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dei:DocumentInformationTable
3 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
4 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
5 A Shares (par value RMB1.00 per share) [member] Member znh:ASharesMember
6 H Shares (par value RMB1.00 per share) [member] Member znh:HSharesMember
7 Document Information [Line Items] LineItems dei:DocumentInformationLineItems
8 Document Type Concept (Submission Type) For Period dei:DocumentType
9 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
10 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
11 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
12 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
13 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
14 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
15 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
16 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
17 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
18 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
19 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
20 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
21 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
22 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
23 1003 - Statement - CONSOLIDATED INCOME STATEMENTS Network

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http://www.csair.com/taxonomy/role/StatementOfComprehensiveIncomeProfitOrLossByNatureOfExpense-320000
24 Implied Table Table

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implied:Table
25 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
26 Operating revenue Abstract ifrs-full:RevenueAbstract
27 Traffic revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfTransportServices
28 Other operating revenue Concept (Monetary) For Period Credit znh:OtherOperatingRevenue
29 Total operating revenue Concept (Monetary) For Period Credit znh:OperatingRevenue
30 Operating expenses Abstract ifrs-full:ExpenseByNatureAbstract
31 Flight operation expenses Concept (Monetary) For Period Debit znh:FlightOperationsExpense
32 Maintenance expenses Concept (Monetary) For Period Debit znh:MaintenanceExpenses
33 Aircraft and transportation service expenses Concept (Monetary) For Period Debit znh:AircraftAndTransportationServiceExpenses
34 Promotion and selling expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
35 General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
36 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
37 Impairment on property, plant and equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
38 Others Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
39 Total operating expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseByNature
40 Other net income Concept (Monetary) For Period Credit znh:OtherNonoperatingIncomeExpense
41 Operating profit Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
42 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
43 Interest expense Concept (Monetary) For Period Debit znh:InterestExpenseObligation
44 Share of associates' results Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
45 Share of joint ventures' results Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
46 Exchange (loss)/gain, net Concept (Monetary) For Period Credit znh:NetForeignExchangeGainLoss
47 Changes in fair value of financial instruments Concept (Monetary) For Period Credit znh:GainLossOnDerivativeFinancialInstruments
48 Gain on deemed disposal of a subsidiary Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
49 Remeasurement of the originally held equity interests in a joint venture Concept (Monetary) For Period Credit znh:RemeasurementOfOriginallyHeldEquityInterestsInJointVenture
50 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
51 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
52 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
53 Profit attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
54 Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
55 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
56 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
57 Earnings per share Abstract ifrs-full:EarningsPerShareAbstract
58 Basic and diluted Concept (Share) For Period znh:BasicAndDilutedEarningsPerShare
59 1004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Network

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http://www.csair.com/taxonomy/role/StatementOfComprehensiveIncomeOCIComponentsPresentedNetOfTax-410000
60 Implied Table Table

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implied:Table
61 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
62 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
63 Other comprehensive income: Items that will not be reclassified to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossBeforeTaxAbstract
64 Equity investments at fair value through other comprehensive income - net movement in fair value reserve (non-recycling) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments
65 Share of other comprehensive income of associates Concept (Monetary) For Period Credit znh:ShareOfOtherComprehensiveIncomeOfAssociatesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossBeforeTax
66 Deferred tax relating to above items Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
67 Items that may be reclassified subsequently to profit or loss Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
68 Cash flow hedge: fair value movement of derivative financial instruments Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxCashFlowHedges
69 Fair value movement of available-for-sale financial assets (recycling) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
70 Share of other comprehensive income (loss) of associates Concept (Monetary) For Period Credit znh:ShareOfOtherComprehensiveIncomeOfAssociatesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
71 Differences resulting from the translation of foreign currency financial statements Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
72 Deferred tax relating to above items Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLoss
73 Other comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
74 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
75 Total comprehensive income attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
76 Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
77 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
78 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
79 1005 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL POSITION Network

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http://www.csair.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
80 Implied Table Table

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implied:Table
81 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
82 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
83 Property, plant and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
84 Construction in progress Concept (Monetary) As Of Debit znh:ConstructionInProgressNonCurrent
85 Lease prepayments Concept (Monetary) As Of Debit znh:LandUseRightLeasePrepaymentsNoncurrent
86 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
87 Interest in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
88 Interest in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
89 Other investments in equity securities Concept (Monetary) As Of Debit znh:NoncurrentEquityInvestmentsAccountedForUsingCostMethod
90 Aircraft lease deposits Concept (Monetary) As Of Debit znh:AircraftLeaseDeposits
91 Available-for-sale financial assets Concept (Monetary) As Of Debit znh:FinancialAssetsAvailableforsaleNoncurrent
92 Other equity instrument investments Concept (Monetary) As Of Debit ifrs-full:NoncurrentInvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome
93 Other non-current financial assets Concept (Monetary) As Of Debit znh:InvestmentsInEquitySecuritiesClassifiedAsFairValueThroughProfitOrLoss
94 Derivative financial instruments Concept (Monetary) As Of Debit ifrs-full:NoncurrentDerivativeFinancialAssets
95 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
96 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
97 Total non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
98 Current assets Abstract ifrs-full:CurrentAssetsAbstract
99 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
100 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
101 Other receivables Concept (Monetary) As Of Debit znh:OtherReceivablesCurrent
102 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
103 Restricted bank deposits Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
104 Prepaid expenses and other current assets Concept (Monetary) As Of Debit znh:PrepaidExpensesAndOtherCurrentAssets
105 Other financial assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
106 Assets held for sale Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsOtherThanAssetsOrDisposalGroupsClassifiedAsHeldForSaleOrAsHeldForDistributionToOwners
107 Amounts due from related companies Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
108 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
109 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
110 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
111 Borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
112 Current portion of obligations under finance leases Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
113 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
114 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
115 Sales in advance of carriage Concept (Monetary) As Of Credit znh:SalesInAdvanceOfCarriage
116 Deferred revenue Concept (Monetary) As Of Credit znh:DeferredRevenueCurrent1
117 Current income tax Concept (Monetary) As Of Credit znh:CurrentIncomeTaxLiabilitiesCurrent
118 Amounts due to related companies Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
119 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsCurrent
120 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
121 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
122 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
123 Borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
124 Obligations under finance leases Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
125 Deferred revenue Concept (Monetary) As Of Credit znh:DeferredRevenueNonCurrent1
126 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
127 Provision for major overhauls Concept (Monetary) As Of Credit znh:NoncurrentPortionOfProvisionForMajorOverhauls
128 Provision for early retirement benefits Concept (Monetary) As Of Credit znh:NoncurrentProvisionsForEmployeeEarlyRetirementBenefits
129 Deferred benefits and gains Concept (Monetary) As Of Credit znh:DeferredBenefitsAndGainsClassifiedAsNoncurrent
130 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
131 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
132 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
133 Capital and reserves Abstract ifrs-full:EquityAbstract
134 Share capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
135 Reserves Concept (Monetary) As Of Credit znh:RetainedEarningsAndOtherReserves
136 Total equity attributable to equity shareholders of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
137 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
138 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
139 1006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Network

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http://www.csair.com/taxonomy/role/NotesStatementOfChangesInEquityAdditionalDisclosures-800400
140 Statement of changes in equity [table] Table

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ifrs-full:StatementOfChangesInEquityTable
141 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
142 Equity [member] Member ifrs-full:EquityMember
143 Share capital [Member] Member ifrs-full:IssuedCapitalMember
144 Share premium [member] Member ifrs-full:SharePremiumMember
145 Fair value reserve [member] Member ifrs-full:ReserveOfGainsAndLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember
146 Other reserves [member] Member ifrs-full:OtherReservesMember
147 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
148 Total attributable to equity shareholders of the Company [Member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
149 Non-controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
150 Redesignation [axis] Axis ifrs-full:RedesignationAxis
151 Redesignated [member] Member ifrs-full:RedesignatedMember
152 Fair value reserve (recycling) [member] Member znh:FairValueReserveRecyclingMember
153 Fair value reserve (non-recycling) [member] Member znh:FairValueReserveNonRecyclingMember
154 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
155 Beginning balance Concept (Monetary) As Of Credit ifrs-full:Equity
156 Impact on initial application of IFRS 15 (Note 2(b)(ii)) Concept (Monetary) For Period Credit znh:ImpactOnInitialApplicationOfIFRS15
157 Impact on initial application of IFRS 9 (Note 2(b)(i)) Concept (Monetary) For Period Credit znh:ImpactOnInitialApplicationOfIFRS9
158 Adjusted balance at January 1, 2018 Concept (Monetary) For Period Credit znh:EquityAdjustedBeginningBalance
159 Changes in equity Abstract ifrs-full:ChangesInEquityAbstract
160 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
161 Other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
162 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
163 Appropriations to reserves Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferToStatutoryReserve
164 Dividends relating to the prior year Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears
165 Issuance of shares Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
166 Capital injection by non-controlling interests in subsidiaries Concept (Monetary) For Period Credit znh:CapitalInjectionOfNoncontrollingInterestsInSubsidiary
167 Decrease in non-controlling interests as a result of loss of control of a subsidiary Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughDisposalOfSubsidiary
168 Changes in other reserves Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
169 Dilution and change in non-controlling interests and other reserves Concept (Monetary) For Period Credit znh:DilutionAndChangeInNonControllingInterestsAndOtherReserves
170 Distributions to non-controlling interests Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToNoncontrollingInterests
171 Ending balance Concept (Monetary) As Of Credit ifrs-full:Equity
172 1007 - Statement - CONSOLIDATED CASH FLOW STATEMENTS Network

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http://www.csair.com/taxonomy/role/NotesStatementOfCashFlowsAdditionalDisclosures-800300
173 Implied Table Table

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implied:Table
174 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
175 Operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
176 Cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
177 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
178 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
179 Income tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
180 Net cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
181 Investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
182 Acquisition of subsidiaries, net of cash acquired Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
183 Deemed disposal of a subsidiary Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromLosingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
184 Proceeds from disposal of property, plant and equipment and lease prepayments Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
185 Proceeds from sale of a joint venture Concept (Monetary) For Period Debit ifrs-full:OtherCashReceiptsFromSalesOfInterestsInJointVenturesClassifiedAsInvestingActivities
186 Acquisition of other financial assets Concept (Monetary) For Period Credit znh:PurchaseOfShorttermFinancialAssetsClassifiedAsInvestingActivities
187 Dividends received from associates Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities
188 Dividends received from joint ventures Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromJointVenturesClassifiedAsInvestingActivities
189 Dividends received from other investments in equity securities and available-for-sale financial assets Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsInvestingActivities
190 Dividends received from other non-current financial assets and other equity instrument investments Concept (Monetary) For Period Debit znh:DividendReceivedFromOtherNonCurrentFinancialAssetsAndOtherEquityInstrumentInvestments
191 Acquisition of term deposits Concept (Monetary) For Period Credit znh:PurchaseOfTermDepositsClassifiedAsInvestingActivities
192 Proceeds from maturity of term deposits Concept (Monetary) For Period Debit znh:ProceedsFromMaturityOfTermDepositsClassifiedAsInvestingActivities
193 Additions of property, plant and equipment, lease prepayments and other assets Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
194 Capital injection into associates Concept (Monetary) For Period Credit znh:PurchaseOfCapitalInjectionIntoAssociates
195 Payments for aircraft lease deposits Concept (Monetary) For Period Credit znh:PaymentForAircraftLeaseDeposits
196 Refund of aircraft lease deposits Concept (Monetary) For Period Debit znh:ProceedsFromAircraftLeaseDeposits
197 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
198 Financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
199 Dividends paid to equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
200 Proceeds from issuance of shares Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
201 Proceeds from bank borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
202 Proceeds from corporate bonds Concept (Monetary) For Period Debit znh:ProceedsFromCorporateBonds
203 Proceeds from issuance of ultra-short-term financing bills Concept (Monetary) For Period Debit znh:ProceedsFromIssuanceOfUltraShortTermFinancingBills
204 Proceeds from medium-term notes Concept (Monetary) For Period Debit znh:ProceedsFromMediumTermNotes
205 Repayment of bank borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
206 Repayment of principal under finance lease obligations Concept (Monetary) For Period Credit ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
207 Repayment of ultra-short-term financing bills Concept (Monetary) For Period Credit znh:RepaymentOfUltraShortTermFinancingBills
208 Repayment of corporate bonds Concept (Monetary) For Period Credit znh:RepaymentOfCorporateBonds
209 Capital injections by non-controlling interests in subsidiaries Concept (Monetary) For Period Debit znh:ProceedsFromCapitalInjectionsFromNoncontrollingInterestsOfSubsidiaries
210 Dividends paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterestsClassifiedAsFinancingActivities
211 Payment for purchase of non-controlling interests Concept (Monetary) For Period Credit ifrs-full:PaymentsFromChangesInOwnershipInterestsInSubsidiaries
212 Net cash generated from/(used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
213 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
214 Cash and cash equivalents at January 1 Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
215 Exchange gain/(loss) on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
216 Cash and cash equivalents at December 31 Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
217 1008 - Disclosure - Corporate information Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
218 Implied Table Table

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219 Text block [abstract] Abstract znh:TextBlockAbstract
220 Corporate information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralInformationAboutFinancialStatementsExplanatory
221 1009 - Disclosure - Significant accounting policies Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
222 Implied Table Table

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implied:Table
223 Text block [abstract] Abstract znh:TextBlockAbstract
224 Significant accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
225 1010 - Disclosure - Accounting estimates and judgements Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfAccountingJudgementsAndEstimatesExplanatory
226 Implied Table Table

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227 Text block [abstract] Abstract znh:TextBlockAbstract
228 Accounting estimates and judgements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
229 1011 - Disclosure - Financial risk management and fair values Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfFinancialRiskManagementExplanatory
230 Implied Table Table

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231 Text block [abstract] Abstract znh:TextBlockAbstract
232 Financial risk management and fair values Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialRiskManagementExplanatory
233 1012 - Disclosure - Operating revenue Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfOperatingRevenueExplanatory
234 Implied Table Table

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235 Text block [abstract] Abstract znh:TextBlockAbstract
236 Operating revenue Concept (Text Block (HTML)) For Period znh:DisclosureOfOperatingRevenueExplanatory
237 1013 - Disclosure - Segment reporting Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfEntitysReportableSegmentsExplanatory
238 Implied Table Table

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239 Text block [abstract] Abstract znh:TextBlockAbstract
240 Segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
241 1014 - Disclosure - Flight operation expenses Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfExpensesByNatureExplanatory
242 Implied Table Table

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243 Text block [abstract] Abstract znh:TextBlockAbstract
244 Flight operation expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExpensesByNatureExplanatory
245 1015 - Disclosure - Maintenance expenses Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfExpensesExplanatory
246 Implied Table Table

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247 Text block [abstract] Abstract znh:TextBlockAbstract
248 Maintenance expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExpensesExplanatory
249 1016 - Disclosure - Aircraft and transportation service expenses Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfOtherOperatingExpenseExplanatory
250 Implied Table Table

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251 Text block [abstract] Abstract znh:TextBlockAbstract
252 Aircraft and transportation service expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory
253 1017 - Disclosure - Promotion and selling expenses Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfPromotionAndSellingExpensesExplanatory
254 Implied Table Table

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255 Text block [abstract] Abstract znh:TextBlockAbstract
256 Promotion and selling expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfPromotionAndSellingExpensesExplanatory
257 1018 - Disclosure - General and administrative expenses Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfGeneralAndAdministrativeExpenseExplanatory
258 Implied Table Table

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259 Text block [abstract] Abstract znh:TextBlockAbstract
260 General and administrative expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
261 1019 - Disclosure - Depreciation and amortisation Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfDepreciationAndAmortisationExpenseExplanatory
262 Implied Table Table

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263 Text block [abstract] Abstract znh:TextBlockAbstract
264 Depreciation and amortisation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDepreciationAndAmortisationExpenseExplanatory
265 1020 - Disclosure - Staff costs Network

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http://www.csair.com/taxonomy/role/NotesToFinancialStatementsDisclosureOfInformationAboutEmployeesExplanatory
266 Implied Table Table

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267 Text block [abstract] Abstract znh:TextBlockAbstract
268 Staff costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutEmployeesExplanatory
269 1021 - Disclosure - Other net income Network

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271 Text block [abstract] Abstract znh:TextBlockAbstract
272 Other net income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
273 1022 - Disclosure - Interest expense Network

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274 Implied Table Table

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275 Text block [abstract] Abstract znh:TextBlockAbstract
276 Interest expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestExpenseExplanatory
277 1023 - Disclosure - Income tax Network

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278 Implied Table Table

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279 Text block [abstract] Abstract znh:TextBlockAbstract
280 Income tax Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
281 1024 - Disclosure - Other comprehensive income Network

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282 Implied Table Table

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283 Text block [abstract] Abstract znh:TextBlockAbstract
284 Other comprehensive income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
285 1025 - Disclosure - Earnings per share Network

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287 Text block [abstract] Abstract znh:TextBlockAbstract
288 Earnings per share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
289 1026 - Disclosure - Property, plant and equipment, net Network

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291 Text block [abstract] Abstract znh:TextBlockAbstract
292 Property, plant and equipment, net Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
293 1027 - Disclosure - Construction in progress Network

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294 Implied Table Table

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295 Text block [abstract] Abstract znh:TextBlockAbstract
296 Construction in progress Concept (Text Block (HTML)) For Period znh:DisclosureOfConstructionInProgressExplanatory
297 1028 - Disclosure - Lease prepayments Network

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299 Text block [abstract] Abstract znh:TextBlockAbstract
300 Lease prepayments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLeasePrepaymentsExplanatory
301 1029 - Disclosure - Goodwill Network

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302 Implied Table Table

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303 Text block [abstract] Abstract znh:TextBlockAbstract
304 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoodwillExplanatory
305 1030 - Disclosure - Subsidiaries Network

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307 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
308 Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
309 1031 - Disclosure - Interest in associates Network

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310 Implied Table Table

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311 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
312 Interest in associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
313 1032 - Disclosure - Interest in joint ventures Network

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314 Implied Table Table

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315 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
316 Interest in joint ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory
317 1033 - Disclosure - Financial assets Network

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318 Implied Table Table

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319 Text block [abstract] Abstract znh:TextBlockAbstract
320 Financial assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
321 1034 - Disclosure - Derivative financial instruments Network

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322 Implied Table Table

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323 Text block [abstract] Abstract znh:TextBlockAbstract
324 Derivative financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory
325 1035 - Disclosure - Changes in fair value of financial instruments Network

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326 Implied Table Table

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327 Statement of changes in equity [abstract] Abstract ifrs-full:StatementOfChangesInEquityAbstract
328 Changes in fair value of financial instruments Concept (Text Block (HTML)) For Period znh:DisclosureOfChangesInFairValueMeasurementAssetsAndLiabilitiesExplanatory
329 1036 - Disclosure - Deferred tax assets/(liabilities) Network

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330 Implied Table Table

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331 Text block [abstract] Abstract znh:TextBlockAbstract
332 Deferred tax assets/(liabilities) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
333 1037 - Disclosure - Other assets Network

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334 Implied Table Table

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335 Text block [abstract] Abstract znh:TextBlockAbstract
336 Other assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory
337 1038 - Disclosure - Inventories Network

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338 Implied Table Table

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339 Text block [abstract] Abstract znh:TextBlockAbstract
340 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
341 1039 - Disclosure - Trade and Other receivables Network

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342 Statement [table] Table

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343 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
344 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
345 Other receivables [member] Member znh:OtherReceivablesMember
346 Statement [LineItems] LineItems znh:StatementLineItems
347 Trade and Other receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
348 1040 - Disclosure - Cash and cash equivalents Network

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349 Implied Table Table

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350 Text block [abstract] Abstract znh:TextBlockAbstract
351 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
352 1041 - Disclosure - Assets held for sale Network

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353 Implied Table Table

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354 Text block [abstract] Abstract znh:TextBlockAbstract
355 Assets held for sale Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
356 1042 - Disclosure - Borrowings Network

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357 Implied Table Table

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358 Text block [abstract] Abstract znh:TextBlockAbstract
359 Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBorrowingsExplanatory
360 1043 - Disclosure - Obligations under finance leases Network

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362 Text block [abstract] Abstract znh:TextBlockAbstract
363 Obligations under finance leases Concept (Text Block (HTML)) For Period znh:DisclosureOfFinanceLeasesPledgesExplanatory
364 1044 - Disclosure - Trade payables Network

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365 Implied Table Table

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366 Text block [abstract] Abstract znh:TextBlockAbstract
367 Trade payables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
368 1045 - Disclosure - Contract liabilities / Deferred revenue Network

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370 Text block [abstract] Abstract znh:TextBlockAbstract
371 Contract liabilities / Deferred revenue Concept (Text Block (HTML)) For Period znh:DisclosureOfContractLiabilitiesAndDeferredIncomeExplanatory
372 1046 - Disclosure - Sales in advance of carriage Network

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374 Text block [abstract] Abstract znh:TextBlockAbstract
375 Sales in advance of carriage Concept (Text Block (HTML)) For Period znh:DisclosureOfSalesInAdvanceOfCarriageExplanatory
376 1047 - Disclosure - Other non-current liabilities Network

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377 Implied Table Table

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378 Text block [abstract] Abstract znh:TextBlockAbstract
379 Other non-current liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory
380 1048 - Disclosure - Balances with related companies Network

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382 Text block [abstract] Abstract znh:TextBlockAbstract
383 Balances with related companies Concept (Text Block (HTML)) For Period znh:DisclosureOfAmountDueFromToRelatedPartyExplanatory
384 1049 - Disclosure - Accrued expenses Network

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385 Implied Table Table

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386 Text block [abstract] Abstract znh:TextBlockAbstract
387 Accrued expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory
388 1050 - Disclosure - Other liabilities Network

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389 Implied Table Table

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390 Text block [abstract] Abstract znh:TextBlockAbstract
391 Other liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherCurrentLiabilitiesExplanatory
392 1051 - Disclosure - Provision for major overhauls Network

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393 Implied Table Table

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394 Text block [abstract] Abstract znh:TextBlockAbstract
395 Provision for major overhauls Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsContingentLiabilitiesAndContingentAssetsExplanatory
396 1052 - Disclosure - Provision for early retirement benefits Network

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398 Text block [abstract] Abstract znh:TextBlockAbstract
399 Provision for early retirement benefits Concept (Text Block (HTML)) For Period znh:DisclosureOfProvisionsForEmployeeBenefitsExplanatory
400 1053 - Disclosure - Deferred benefits and gains Network

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401 Implied Table Table

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402 Text block [abstract] Abstract znh:TextBlockAbstract
403 Deferred benefits and gains Concept (Text Block (HTML)) For Period znh:DisclosureOfDeferredBenefitsAndGainsClassifiedAsNoncurrentExplanatory
404 1054 - Disclosure - Share capital Network

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406 Text block [abstract] Abstract znh:TextBlockAbstract
407 Share capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIssuedCapitalExplanatory
408 1055 - Disclosure - Reserves Network

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409 Implied Table Table

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410 Text block [abstract] Abstract znh:TextBlockAbstract
411 Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
412 1056 - Disclosure - Commitments Network

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414 Text block [abstract] Abstract znh:TextBlockAbstract
415 Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsExplanatory
416 1057 - Disclosure - Material related party transactions Network

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417 Implied Table Table

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418 Text block [abstract] Abstract znh:TextBlockAbstract
419 Material related party transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
420 1058 - Disclosure - Employee benefits plan Network

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421 Implied Table Table

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422 Text block [abstract] Abstract znh:TextBlockAbstract
423 Employee benefits plan Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
424 1059 - Disclosure - Supplementary information to the consolidated cash flow statement Network

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425 Implied Table Table

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426 Text block [abstract] Abstract znh:TextBlockAbstract
427 Supplementary information to the consolidated cash flow statement Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutUnderstandingFinancialPositionsAndLiquidityOfEntityExplanatory
428 1060 - Disclosure - Contingent liabilities Network

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429 Implied Table Table

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430 Text block [abstract] Abstract znh:TextBlockAbstract
431 Contingent liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfContingentLiabilitiesExplanatory
432 1061 - Disclosure - Comparative figures Network

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434 Text block [abstract] Abstract znh:TextBlockAbstract
435 Comparative figures Concept (Text Block (HTML)) For Period znh:DisclosureOfComparativeFiguresExplanatory
436 1062 - Disclosure - Immediate and ultimate controlling party Network

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438 Text block [abstract] Abstract znh:TextBlockAbstract
439 Immediate and ultimate controlling party Concept (Text Block (HTML)) For Period znh:DisclosureOfImmediateAndUltimateControllingPartyExplanatory
440 1063 - Disclosure - Approval of financial statements Network

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442 Text block [abstract] Abstract znh:TextBlockAbstract
443 Approval of financial statements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAuthorisationOfFinancialStatementsExplanatory
444 1064 - Disclosure - Non-adjusting events after the financial year end Network

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445 Implied Table Table

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446 Text block [abstract] Abstract znh:TextBlockAbstract
447 Non-adjusting events after the financial year end Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory
448 1065 - Disclosure - Directors' and supervisors' emoluments Network

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449 Implied Table Table

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450 Text block [abstract] Abstract znh:TextBlockAbstract
451 Directors' and supervisors' emoluments Concept (Text Block (HTML)) For Period znh:DisclosureOfEmolumentsOfDirectorsAndSupervisorsExplanatory
452 1066 - Disclosure - Possible impact of amendments, new standards and interpretations issued but not yet effective for the year ended December 31, 2018 Network

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454 Text block [abstract] Abstract znh:TextBlockAbstract
455 Possible impact of amendments, new standards and interpretations issued but not yet effective for the year ended December 31, 2018 Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
456 1067 - Disclosure - Significant accounting policies (Policies) Network

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457 Implied Table Table

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458 Text block [abstract] Abstract znh:TextBlockAbstract
459 Basis of preparation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
460 Changes in accounting policies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
461 Subsidiaries and non-controlling interests Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
462 Associates and joint arrangements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
463 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
464 Other investments in debt and equity securities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethodExplanatory
465 Derivative financial instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsExplanatory
466 Investment properties Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentPropertyExplanatory
467 Property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
468 Construction in progress Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForConstructionInProgressExplanatory
469 Leased assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
470 Credit losses and impairment of assets Concept (Text Block (HTML)) For Period znh:DescriptionOfAccountingPolicyForCreditLossesAndImpairmentOfAssetsExplanatory
471 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
472 Contract assets and contract liabilities Concept (Text Block (HTML)) For Period znh:DescriptionOfAccountingPolicyForContractAssetsAndContractLiabilitiesExplanatory
473 Trade and other receivables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
474 Interest-bearing borrowings Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingsExplanatory
475 Trade and other payables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
476 Non-current assets held for sale Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForNoncurrentAssetsOrDisposalGroupsClassifiedAsHeldForSaleExplanatory
477 Cash and cash equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
478 Provisions and contingent liabilities Concept (Text Block (HTML)) For Period znh:DescriptionOfAccountingPolicyForContingentLiabilitiesExplanatory
479 Dividend distribution Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDividendsExplanatory
480 Share capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
481 Deferred benefits and gains Concept (Text Block (HTML)) For Period znh:DescriptionOfAccountingPolicyForDeferredBenefitsAndGainsExplanatory
482 Income tax Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
483 Revenue and other income Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
484 Traffic commissions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFeeAndCommissionIncomeAndExpenseExplanatory
485 Maintenance and overhaul costs Concept (Text Block (HTML)) For Period znh:DescriptionOfAccountingPolicyForMaintenanceAndOverhaulCostsExplanatory
486 Borrowing costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
487 Employee benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
488 Translation of foreign currencies Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
489 Related parties Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTransactionsWithRelatedPartiesExplanatory
490 Segment reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
491 1068 - Disclosure - Significant accounting policies (Tables) Network

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492 Implied Table Table

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493 Text block [abstract] Abstract znh:TextBlockAbstract
494 Summary of Impact of Transition to IFRS 9 on Retained Earnings and Reserves and Related Tax Impact Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationBetweenInvestmentDerecognisedAndAssetsAndLiabilitiesRecognisedTransitionFromAccountingForInvestmentAtCostOrInAccordanceWithIFRS9ToAccountingForAssetsAndLiabilitiesExplanatory
495 Summary of Original Measurement Categories For Each Class of Financial Assets Under IAS 39 and Reconciles Carrying Amounts of Financial Assets Determined in Accordance with IAS 39 to those Determined in Accordance with IFRS 9 Concept (Text Block (HTML)) For Period znh:SummaryOfOriginalMeasurementCategoriesForFinancialAssetsDeterminedInAccordanceWithIas39ToThoseDeterminedInAccordanceWithIfrs9Explanatory
496 Summary of Impact of Transition to IFRS 15 on Total Equity Concept (Text Block (HTML)) For Period znh:DisclosureOfEquityInterestExplanatory
497 Summary of Estimated Impact of Adoption of IFRS 15 Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFirstTimeAdoptionExplanatory
498 Estimated Useful Lives for Depreciation Using Straight Line Method of Other Property, Plant and Equipment Concept (Text Block (HTML)) For Period znh:DisclosureOfPropertyPlantAndEquipmentEstimatedUsefulLifeExplanatory
499 1069 - Disclosure - Financial risk management and fair values (Tables) Network

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500 Implied Table Table

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501 Text block [abstract] Abstract znh:TextBlockAbstract
502 Remaining Contractual Maturities of Non-derivative Financial Liabilities Based on Contractual Undiscounted Cash Flows Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
503 Sensitivity Analysis of Significant Foreign Exchange Rates and Impact on Profit after Tax and Retained Profits Concept (Text Block (HTML)) For Period ifrs-full:SensitivityAnalysisForEachTypeOfMarketRisk
504 Disclosure of Exposure to Credit Risk and Expected Credit Losses for Air Ticket Receivables Concept (Text Block (HTML)) For Period znh:DisclosureOfEstimatedExposureToCreditRiskAndCreditLossesForTradeAccountsReceivableExplantory
505 Disclosure of Trade Debtors Impaired Concept (Text Block (HTML)) For Period ifrs-full:AnalysisOfAgeOfFinancialAssetsThatArePastDueButNotImpaired
506 Schedule of Movement in the Allowances for Loan Losses Concept (Text Block (HTML)) For Period znh:ScheduleOfMovementInAllowancesForLoanLossesExplanatory
507 Carrying Value of Financial Instruments Measured at Fair Value on a Recurring Basis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
508 Quantitative Information of Valuation Technique and Significant Unobservable Inputs Used in Measuring Financial Instruments at Fair Value on a Recurring Basis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory
509 1070 - Disclosure - Operating revenue (Tables) Network

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511 Text block [abstract] Abstract znh:TextBlockAbstract
512 Summary of Operation of Civil Aviation, Including the Provision of Passenger, Cargo, Mail Delivery, and Other Extended Transportation Services Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutRevenueExplanatory
513 1071 - Disclosure - Segment reporting (Tables) Network

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514 Statement [table] Table

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515 Departure from requirement of IFRS [axis] Axis ifrs-full:DepartureFromRequirementOfIFRSAxis
516 Currently stated [member] Member ifrs-full:RestatedMember
517 Financial Results Prepared under the People's Republic of China Accounting Standards for Business Enterprises ("PRC GAAP") [member] Member ifrs-full:IncreaseDecreaseDueToDepartureFromRequirementOfIFRSMember
518 Statement [LineItems] LineItems znh:StatementLineItems
519 Information of Reportable Segments Provided to Chief Operating Decision Maker for Purposes of Resource Allocation and Assessment of Segment Performance Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOperatingSegmentsExplanatory
520 Revenues by Geographical Segment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeographicalAreasExplanatory
521 Summary of Disaggregation of Revenue by Major Products or Service Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory
522 Reconciliation of Reportable Segment Revenue, Profit before Income Tax, Assets and Liabilities to Consolidated Figures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationExplanatory
523 1072 - Disclosure - Flight operation expenses (Tables) Network

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524 Implied Table Table

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525 Text block [abstract] Abstract znh:TextBlockAbstract
526 Summary of Flight Operation Expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutOperatingExpenseTextBlock
527 1073 - Disclosure - Maintenance expenses (Tables) Network

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528 Implied Table Table

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529 Text block [abstract] Abstract znh:TextBlockAbstract
530 Summary of Maintenance Expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutMaintenanceExpensesExplanatory
531 1074 - Disclosure - Aircraft and transportation service expenses (Tables) Network

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532 Implied Table Table

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533 Text block [abstract] Abstract znh:TextBlockAbstract
534 Summary of Aircraft and Transportation Service Expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutAircraftAndTransportationServiceExpensesExplanatory
535 1075 - Disclosure - Promotion and selling expenses (Tables) Network

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536 Implied Table Table

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537 Text block [abstract] Abstract znh:TextBlockAbstract
538 Summary of Promotion and Selling Expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutPromotionAndSellingExpensesExplanatory
539 1076 - Disclosure - General and administrative expenses (Tables) Network

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540 Implied Table Table

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541 Text block [abstract] Abstract znh:TextBlockAbstract
542 Summary of General and Administrative Expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutGeneralAndAdministrativeExpenseExplanatory
543 1077 - Disclosure - Depreciation and amortisation (Tables) Network

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544 Implied Table Table

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545 Text block [abstract] Abstract znh:TextBlockAbstract
546 Summary of Depreciation and Amortisation Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutDepreciationAndAmortisationExplanatory
547 1078 - Disclosure - Staff costs (Tables) Network

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548 Implied Table Table

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549 Text block [abstract] Abstract znh:TextBlockAbstract
550 Summary of Staff Costs Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutStaffCostsExplanatory
551 1079 - Disclosure - Other net income (Tables) Network

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552 Implied Table Table

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553 Text block [abstract] Abstract znh:TextBlockAbstract
554 Summary of Other Net Income Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutOtherOperatingIncomeExplanatory
555 1080 - Disclosure - Interest expense (Tables) Network

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556 Implied Table Table

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557 Text block [abstract] Abstract znh:TextBlockAbstract
558 Summary of Interest Expense Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailsOnInterestExpenseExplanatory
559 1081 - Disclosure - Income tax (Tables) Network

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560 Implied Table Table

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561 Text block [abstract] Abstract znh:TextBlockAbstract
562 Income Tax Expense in Consolidated Income Statement Concept (Text Block (HTML)) For Period znh:DisclosureOfIncomeTaxExpenseBenefitExplanatory
563 Reconciliation between Actual Tax Expense and Calculated Tax Based on Accounting Profit at Applicable Tax Rates Concept (Text Block (HTML)) For Period znh:DisclosureOfReconciliationOfEffectiveAndApplicableIncomeTaxExpensesExplanatory
564 1082 - Disclosure - Other comprehensive income (Tables) Network

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565 Implied Table Table

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566 Text block [abstract] Abstract znh:TextBlockAbstract
567 Summary of Other Comprehensive Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfEachInvestmentInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeExplanatory
568 1083 - Disclosure - Earnings per share (Tables) Network

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569 Implied Table Table

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570 Text block [abstract] Abstract znh:TextBlockAbstract
571 Summary of Earnings per Share Concept (Text Block (HTML)) For Period znh:DisclosureOfBasicEarningsPerShareExplanatory
572 1084 - Disclosure - Property, plant and equipment, net (Tables) Network

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573 Implied Table Table

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574 Text block [abstract] Abstract znh:TextBlockAbstract
575 Property, plant and equipment, net Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
576 Future Minimum Lease Income under Non-cancellable Operating Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsExplanatory
577 1085 - Disclosure - Construction in progress (Tables) Network

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578 Implied Table Table

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579 Text block [abstract] Abstract znh:TextBlockAbstract
580 Summary of Construction in Progress Concept (Text Block (HTML)) For Period znh:DisclosureOfChangesInConstructionInProgressExplanatory
581 1086 - Disclosure - Goodwill (Tables) Network

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582 Implied Table Table

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583 Text block [abstract] Abstract znh:TextBlockAbstract
584 Summary of Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory
585 Goodwill Allocated Cash-Generating Units Concept (Text Block (HTML)) For Period znh:DisclosureOfGoodwillAllocatedToCashGeneratingUnitsExplanatory
586 1087 - Disclosure - Subsidiaries (Tables) Network

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587 Statement [table] Table

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588 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
589 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
590 Southern Airlines Culture And Media Co., Ltd. [member] Member znh:SouthernAirlinesCultureAndMediaCoLtdMember
591 Xinjiang Civil Aviation Property Management Limited [member] Member znh:XinjiangCivilAviationPropertyManagementLimitedMember
592 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
593 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
594 Xiamen Airlines Company Limited [member] Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
595 Southern Airlines Group Import and Export Trading Company [member] Member znh:SouthernAirlinesGroupImportAndExportTradingCompanyMember
596 Zhuhai Xiang Yi Aviation Technology Company Limited [member] Member znh:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
597 Statement [LineItems] LineItems znh:StatementLineItems
598 List of Particular Subsidiaries Principally Affect Results, Assets or Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
599 Financial Information Related to Acquisition Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
600 Disclosure of Disposal of Subsidiaries Concept (Text Block (HTML)) For Period znh:DisclosureOfDisposalOfSubsidiariesExplanatory
601 Financial Information Related to Subsidiary with Material non-controlling Interests Concept (Text Block (HTML)) For Period znh:FinancialInformationRelatedToSubsidiaryWithMaterialNoncontrollingInterestsExplanatory
602 1088 - Disclosure - Interest in associates (Tables) Network

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603 Statement [table] Table

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604 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
605 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
606 Aggregated individually immaterial joint ventures [member] Member ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember
607 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
608 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
609 Aggregated individually immaterial associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
610 Statement [LineItems] LineItems znh:StatementLineItems
611 Summary of Principal Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
612 Summarized Financial Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory
613 1089 - Disclosure - Interest in joint ventures (Tables) Network

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614 Implied Table Table

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615 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
616 Summary of Principal Joint Ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfJointVenturesExplanatory
617 1090 - Disclosure - Financial assets (Tables) Network

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618 Implied Table Table

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619 Text block [abstract] Abstract znh:TextBlockAbstract
620 Summary of Financial Assets Concept (Text Block (HTML)) For Period znh:DisclosureOfFinancialAssetsAndLiabilitiesByCategoriesExplanatory
621 1091 - Disclosure - Derivative financial instruments (Tables) Network

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622 Implied Table Table

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623 Text block [abstract] Abstract znh:TextBlockAbstract
624 Summary of Derivative Financial Instruments Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutDerivativeFinancialInstrumentsExplanatory
625 1092 - Disclosure - Changes in fair value of financial instruments (Tables) Network

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626 Implied Table Table

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627 Statement of changes in equity [abstract] Abstract ifrs-full:StatementOfChangesInEquityAbstract
628 Summary of Changes in Fair Value of Financial Instruments Concept (Text Block (HTML)) For Period znh:DisclosureOfChangesinFairValueofFinancialInstrumentsExplanatory
629 1093 - Disclosure - Deferred tax assets/(liabilities) (Tables) Network

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630 Statement [table] Table

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631 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
632 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
633 Temporary differences [member] Member ifrs-full:TemporaryDifferenceMember
634 Unused tax losses [member] Member ifrs-full:UnusedTaxLossesMember
635 Statement [LineItems] LineItems znh:StatementLineItems
636 Detailed Information about Temporary Differences and Tax Losses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
637 Summary of Reconciliation to the Consolidated Statement of Financial Position Concept (Text Block (HTML)) For Period znh:DisclosureOfReconciliationOfDeferredTaxAssetsAndLiabilitiesExplanatory
638 1094 - Disclosure - Other assets (Tables) Network

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639 Implied Table Table

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640 Text block [abstract] Abstract znh:TextBlockAbstract
641 Summary of Other Assets Concept (Text Block (HTML)) For Period znh:DisclosureOfOtherNoncurrentAssetsDetailsExplanatory
642 1095 - Disclosure - Inventories (Tables) Network

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643 Implied Table Table

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644 Text block [abstract] Abstract znh:TextBlockAbstract
645 Summary of Inventories Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutInventoriesExplanatory
646 Impairment of Inventory Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfImpairmentLossAndReversalOfImpairmentLossExplanatory
647 1096 - Disclosure - Trade and Other receivables (Tables) Network

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648 Implied Table Table

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649 Text block [abstract] Abstract znh:TextBlockAbstract
650 Summary of Trade Receivables Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationOfTradeAccountsReceivablesExplanatory
651 Ageing Analysis of Trade Receivables Based on Transaction Date Concept (Text Block (HTML)) For Period znh:DisclosureOfAgingAnalysisOfTradeReceivablesBasedOnTransactionDateExplanatoryExplanatory
652 Trade Receivables by Currencies Concept (Text Block (HTML)) For Period znh:DisclosureOfTradeReceivablesDenominatedInOtherCurrencyExplanatory
653 Summary of Other Receivables Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutOtherAccountsReceivableExplanatory
654 1097 - Disclosure - Cash and cash equivalents (Tables) Network

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655 Implied Table Table

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656 Text block [abstract] Abstract znh:TextBlockAbstract
657 Summary of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory
658 Cash and Cash Equivalents by Currencies Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsDenominatedExplanatory
659 Reconciliation of Profit before Income Tax to Cash Generated from Operating Activities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
660 Summary of Reconciliation of Liabilities Arising from Financing Activities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesExplanatory
661 1098 - Disclosure - Assets held for sale (Tables) Network

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662 Implied Table Table

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663 Text block [abstract] Abstract znh:TextBlockAbstract
664 Summary of Assets Held for Sale Concept (Text Block (HTML)) For Period znh:DisclosureOfLongLivedAssetsHeldForSaleTextBlock
665 1099 - Disclosure - Borrowings (Tables) Network

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666 Statement [table] Table

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667 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
668 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
669 Non-current borrowings [member] Member znh:NoncurrentBorrowingsMember
670 Statement [LineItems] LineItems znh:StatementLineItems
671 Summary of Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
672 Borrowings by Currencies Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutCarryingAmountsOfBorrowingsWhichDenominatedInCurrenciesExplanatory
673 1100 - Disclosure - Obligations under finance leases (Tables) Network

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674 Implied Table Table

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675 Text block [abstract] Abstract znh:TextBlockAbstract
676 Future Payments under Finance Leases Concept (Text Block (HTML)) For Period znh:DisclosureOfFinanceLeasesByLesseeExplanatory
677 Details of Obligations under Finance Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAdditionalInformationAboutLeasingActivitiesForLesseeExplanatory
678 1101 - Disclosure - Trade payables (Tables) Network

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679 Implied Table Table

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680 Text block [abstract] Abstract znh:TextBlockAbstract
681 Ageing Analysis of Trade Payables Based on Transaction Date Concept (Text Block (HTML)) For Period znh:DisclosureOfTradePayablesMaturityExplanatory
682 Trade Payables by Currencies Concept (Text Block (HTML)) For Period znh:DisclosureOfTradePayablesCurrencyDenominationExplanatory
683 1102 - Disclosure - Contract liabilities / Deferred revenue (Tables) Network

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684 Implied Table Table

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685 Text block [abstract] Abstract znh:TextBlockAbstract
686 Summary of Contract Liabilities and Deferred Revenue Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutContractLiabilitiesAndDeferredIncomeExplanatory
687 1103 - Disclosure - Other non-current liabilities (Tables) Network

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688 Implied Table Table

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689 Text block [abstract] Abstract znh:TextBlockAbstract
690 Summary of Other Non-current Liabilities Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutOtherNoncurrentLiabilitiesExplanatory
691 1104 - Disclosure - Balances with related companies (Tables) Network

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692 Implied Table Table

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693 Text block [abstract] Abstract znh:TextBlockAbstract
694 Summary of Amounts Due from/to Related Companies Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutAmountDueFromToRelatedPartyExplanatory
695 1105 - Disclosure - Accrued expenses (Tables) Network

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696 Implied Table Table

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697 Text block [abstract] Abstract znh:TextBlockAbstract
698 Summary of Accrued Expenses Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailsOfAccruedExpensesExplanatory
699 1106 - Disclosure - Other liabilities (Tables) Network

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700 Implied Table Table

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701 Text block [abstract] Abstract znh:TextBlockAbstract
702 Summary of Other Liabilities Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutOtherCurrentLiabilitiesExplanatory
703 1107 - Disclosure - Provision for major overhauls (Tables) Network

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704 Implied Table Table

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705 Text block [abstract] Abstract znh:TextBlockAbstract
706 Details of Provision for Major Overhauls in Respect of Aircraft Held under Operating Leases Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
707 1108 - Disclosure - Provision for early retirement benefits (Tables) Network

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708 Implied Table Table

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709 Text block [abstract] Abstract znh:TextBlockAbstract
710 Details of Provision for Early Retirement Benefits in Respect of Obligations to Early Retired Employees Concept (Text Block (HTML)) For Period znh:DisclosureOfProvisionForEarlyRetirementBenefitsExplanatory
711 1109 - Disclosure - Deferred benefits and gains (Tables) Network

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712 Implied Table Table

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713 Text block [abstract] Abstract znh:TextBlockAbstract
714 Summary of Deferred Benefits and Gains Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutDeferredBenefitsAndGainsClassifiedAsNoncurrentExplanatory
715 1110 - Disclosure - Share capital (Tables) Network

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716 Implied Table Table

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717 Text block [abstract] Abstract znh:TextBlockAbstract
718 Summary of Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
719 1111 - Disclosure - Reserves (Tables) Network

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720 Implied Table Table

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721 Text block [abstract] Abstract znh:TextBlockAbstract
722 Summary of Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
723 Final Dividend Proposed after the End of Reporting Year Payable to Equity Shareholders of the Company Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDividendsExplanatory
724 1112 - Disclosure - Commitments (Tables) Network

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725 Implied Table Table

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726 Text block [abstract] Abstract znh:TextBlockAbstract
727 Capital Commitments Outstanding not Provided for in Financial Statements Concept (Text Block (HTML)) For Period znh:DisclosureOfCapitalCommitmentsExplanatory
728 Approximate Total Future Payments, Including Estimated Amounts for Price Escalation through Anticipated Delivery Dates for Aircraft and Flight Equipment Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutCapitalCommitmentsExplanatory
729 Total Future Minimum Lease Payments under Non-cancellable Operating Leases in Respect of Properties, Aircraft and Flight Equipment Concept (Text Block (HTML)) For Period znh:DisclosureOfMaturityAnalysisOfLeasePaymentsUnderNoncancellableOperatingLeaseExplanatory
730 1113 - Disclosure - Material related party transactions (Tables) Network

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731 Statement [table] Table

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732 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
733 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
734 Southern Airlines Group Finance Co., Ltd [member] Member znh:SourthernAirlinesGroupFinanceCoLtdMember
735 Statement [LineItems] LineItems znh:StatementLineItems
736 Details of Balances with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInformationAboutKeyManagementPersonnelExplanatory
737 Details of Significant Transactions with Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
738 Details of Balances with Related Parties Concept (Text Block (HTML)) For Period znh:DisclosureOfAccountBalancesWithRelatedPartiesExplanatory
739 1114 - Disclosure - Directors' and supervisors' emoluments (Tables) Network

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740 Implied Table Table

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741 Text block [abstract] Abstract znh:TextBlockAbstract
742 Remuneration of Every Director and Supervisor Concept (Text Block (HTML)) For Period znh:DisclosureOfDetailedInformationAboutEmolumentsOfDirectorsAndSupervisorsExplanatory
743 1115 - Disclosure - Possible impact of amendments, new standards and interpretations issued but not yet effective for the year ended December 31, 2018 (Tables) Network

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744 Implied Table Table

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745 Text block [abstract] Abstract znh:TextBlockAbstract
746 Summary of New Standards or Interpretations Not Yet Adopted Concept (Text Block (HTML)) For Period znh:DisclosureOfNewStandardsOrInterpretationsNotYetAdoptedExplanatory
747 1116 - Disclosure - Significant Accounting Policies - Summary of Impact of Transition to IFRS 9 on Retained Earnings and Reserves and Related Tax Impact (Detail) Network

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748 Disclosure of detailed information about financial instruments [table] Table

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749 Effect of overlay approach reclassification [axis] Axis ifrs-full:EffectOfOverlayApproachReclassificationAxis
750 IFRS 9 [member] Member ifrs-full:InAccordanceWithIFRS9Member
751 IFRS 9 [member] Member ifrs-full:EffectOfOverlayApproachReclassificationMember
752 Redesignation [axis] Axis ifrs-full:RedesignationAxis
753 Redesignated [member] Member ifrs-full:RedesignatedMember
754 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
755 Fair value reserve (recycling) [member] Member znh:FairValueReserveRecyclingMember
756 Fair value reserve (non-recycling) [member] Member znh:FairValueReserveNonRecyclingMember
757 Non-controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
758 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
759 Transferred from fair value reserve (recycling) relating to financial assets now measured at fair value through profit or loss (FVPL) Concept (Monetary) For Period Debit ifrs-full:ReclassificationIntoFinancialAssetsAtFairValueThroughProfitOrLoss
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761 Related tax Concept (Monetary) For Period Debit znh:ReclassificationIntoFinancialAssetsAndOtherInvestmentsInEquityAtFairValueThroughProfitOrLossTaxInitialApplicationOfIfrs9
762 Effect of the above changes on non-controlling interests Concept (Monetary) For Period Credit znh:EffectOfReclassificationIntoFinancialAssetsAndOtherInvestmentsInEquityAtFairValueThroughProfitOrLossOnNonControllingInterestsInitialApplicationOfIfrs9
763 Net increase in retained earnings at January 1, 2018 Concept (Monetary) For Period Credit znh:IncreaseInRetainedEarningsArisingFromChangeInMeasurementAttributeInitialApplicationOfIfrs9
764 Transferred to retained earnings relating to financial assets now measured at FVPL Concept (Monetary) For Period Credit znh:TransferredToRetainedEarningsRelatingToFinancialAssetsNowMeasuredAtFairValueThroughProfitLoss
765 Transferred to fair value reserve (non-recycling) relating to equity securities now measured at fair value through other comprehensive income(FVOCI) Concept (Monetary) For Period Credit znh:TransferredToFairValueReserveNonRecyclingRelatingToEquitySecuritiesNowMeasuredAtFairValueThroughOtherComprehensiveIncome
766 Net decrease in fair value reserve (recycling) at January 1, 2018 Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferBetweenRevaluationReserveAndRetainedEarnings
767 Transfer and remeasurement effect of other investments in equity securities now measured at FVOCI at January 1, 2018 Concept (Monetary) For Period Credit znh:TransferAndRemeasurementEffectOfOtherInvestmentsInEquitySecuritiesNowMeasuredAtFairValueThroughOtherComprehensiveIncome
768 Related tax Concept (Monetary) For Period Debit znh:TransferAndRemeasurementEffectOfOtherInvestmentsInEquitySecuritiesNowMeasuredAtFairValueThroughOtherComprehensiveIncomeRelatedTax
769 Net increase in fair value reserve (non-recycling) at January 1, 2018 Concept (Monetary) For Period Debit znh:NetIncreaseInFairValueReserveNonRecycling
770 Remeasurement of other investments in equity securities now measured at FVPL in non-controlling interests at January 1, 2018 Concept (Monetary) For Period Credit znh:RemeasurementOfOtherInvestmentsInEquitySecuritiesNowMeasuredAtFairValueThroughProfitOrLossInNonControllingInterests
771 1117 - Disclosure - Significant Accounting Policies - Summary of Original Measurement Categories for Each Class of Financial Assets Under IAS 39 and Reconciles Carrying Amounts of Financial Assets Determined in Accordance with IAS 39 to those Determined in Accordance with IFRS 9 (Detail) Network

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772 Disclosure of detailed information about financial instruments [table] Table

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773 Accounting estimates [axis] Axis ifrs-full:AccountingEstimatesAxis
774 Accounting estimates [member] Member ifrs-full:AccountingEstimatesMember
775 IAS 39 carrying amount [member] Member znh:IAS39Member
776 Reclassification [member] Member znh:ReclassificationMember
777 Remeasurement [member] Member znh:RemeasurementMember
778 IFRS 9 [member] Member znh:IFRS9Member
779 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
780 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
781 Financial assets measured at FVOCI (non recyclable) [member] Member znh:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNonRecyclableMember
782 Financial Assets Carried At FVPL [member] Member znh:FinancialAssetsCarriedAtFairValueThroughOtherComprehensiveIncomeMember
783 Financial assets classified as available for sale under IAS 39 [member] Member znh:FinancialAssetsClassifiedAsAvailableForSaleUnderias39Member
784 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
785 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
786 Other equity instrument investment [member] Member znh:OtherEquityInstrumentInvestmentMember
787 Other non-current financial assets [member] Member znh:OtherNoncurrentFinancialAssetsMember
788 Available for sale financial assets [member] Member znh:AvailableForSaleFinancialAssetsMember
789 Other investments in equity securities [member] Member znh:OtherInvestmentsInEquitySecuritiesMember
790 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
791 Other equity instrument investments Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
792 Other non-current financial assets Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome
793 Financial assets classified as available-for-sale under IAS 39 Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAvailableforsale
794 1118 - Disclosure - Significant Accounting Policies - Summary of Impact of Transition to IFRS 15 on Total Equity (Detail) Network

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795 Disclosure of equity [table] Table

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796 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
797 Currently stated [member] Member ifrs-full:RestatedMember
798 Difference: Estimated impact of adoption of IFRS 15 on 2018 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
799 Disclosure of equity [line items] LineItems znh:DisclosureOfEquityLineItems
800 Earlier recognition of ticket breakage revenue Concept (Monetary) As Of Credit znh:EarlierRecognitionOfRevenue
801 Change in measurement of revenue under frequent flyer award programmes Concept (Monetary) As Of Credit znh:ChangeInMeasurementOfRevenue
802 Related income tax Concept (Monetary) For Period ifrs-full:DeferredTaxRelatingToItemsChargedOrCreditedDirectlyToEquity
803 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
804 Attributable to equity shareholders of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
805 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
806 1119 - Disclosure - Significant Accounting Policies - Additional Information (Detail) Network

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807 Disclosure of significant accounting policies [table] Table

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809 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
810 Components related to overhaul costs [member] Member znh:AircraftComponentsMember
811 Range [axis] Axis ifrs-full:RangeAxis
812 Ranges [member] Member ifrs-full:RangesMember
813 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
814 Top of range [member] Member ifrs-full:TopOfRangeMember
815 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
816 Currently stated [member] Member ifrs-full:RestatedMember
817 Difference: Estimated impact of adoption of IFRS 15 on 2018 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
818 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
819 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
820 Timing of revenue recognition [member] Member znh:TimingOfRevenueRecognitionMember
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822 Disclosure of significant accounting policies [line items] LineItems znh:DisclosureOfSignificantAccountingPoliciesLineItems
823 Increased retained earnings Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
824 Increased non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ChangesInEquity
825 Offsetting tax impact Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfTaxLosses
826 Increase in revenue Concept (Monetary) For Period Credit znh:IncreaseDecreaseInRevenue
827 Revenue from ticket breakage Concept (Monetary) For Period Credit znh:RevenueFromTicketBreakage
828 Change fees Concept (Monetary) For Period Credit znh:ChangeFeesInOtherOperatingIncome
829 Estimated useful lives for depreciation using straight line method Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
830 Term for amortisation using straight line method of acquiring cost of land held under operating lease Concept (xbrli:durationItemType) For Period znh:LandUseRightsOperatingLeaseTerm
831 1120 - Disclosure - Significant Accounting Policies - Summary of Estimated Impact of Adoption of IFRS 15 (Detail) Network

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832 Disclosure of equity [table] Table

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833 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
834 Currently stated [member] Member ifrs-full:RestatedMember
835 Amounts reported in accordance with IFRS 15 [member] Member znh:IFRS15Member
836 Hypothetical Amounts under IASs 18 and 11 [member] Member ifrs-full:PreviouslyStatedMember
837 Difference: Estimated impact of adoption of IFRS 15 on 2018 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
838 Disclosure of equity [line items] LineItems znh:DisclosureOfEquityLineItems
839 Traffic revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfTransportServices
840 Other operating revenue Concept (Monetary) For Period Credit znh:OtherOperatingRevenue
841 Total operating revenue Concept (Monetary) For Period Credit znh:OperatingRevenue
842 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
843 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
844 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
845 Profit attributable to: Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
846 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
847 Earnings per share Abstract ifrs-full:BasicAndDilutedEarningsPerShareAbstract
848 Basic and diluted Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
849 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
850 Total comprehensive income attributable to: Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
851 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
852 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
853 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
854 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
855 Sales in advance of carriage Concept (Monetary) As Of Credit znh:SalesInAdvanceOfCarriage
856 Deferred revenue Concept (Monetary) As Of Credit znh:DeferredRevenueCurrent1
857 Current income tax Concept (Monetary) As Of Credit znh:CurrentIncomeTaxLiabilitiesCurrent
858 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
859 Total assets less current liabilities Concept (Monetary) As Of Debit ifrs-full:AssetsLessCurrentLiabilities
860 Deferred revenue Concept (Monetary) As Of Credit znh:DeferredRevenueNonCurrent1
861 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
862 Total non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
863 Reserves Concept (Monetary) As Of Credit znh:RetainedEarningsAndOtherReserves
864 Total equity attributable to equity shareholders of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
865 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
866 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
867 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
868 Increase in contract liabilities Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughCumulativeCatchupAdjustmentsToRevenueContractLiabilities
869 (Increase)/decrease in sales in advance of carriage Concept (Monetary) For Period Debit znh:AdjustmentsForIncreaseDecreaseSalesInAdvanceOfCarriage
870 (Increase)/decrease in deferred revenue Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
871 Increase in other non-current liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
872 1121 - Disclosure - Significant Accounting Policies - Estimated Useful Lives for Depreciation Using Straight Line Method of Other Property, Plant and Equipment (Detail) Network

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873 Disclosure of detailed information about property, plant and equipment [table] Table

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875 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
876 Buildings [Member] Member ifrs-full:BuildingsMember
877 Owned and finance leased aircraft [member] Member ifrs-full:AircraftMember
878 Jet engines [member] Member znh:JetEnginesMember
879 Other property, plant and equipment [member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
880 Machinery and equipment [member] Member znh:MachineryAndEquipment1Member
881 Vehicles [member] Member ifrs-full:VehiclesMember
882 Range [axis] Axis ifrs-full:RangeAxis
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884 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
885 Top of range [member] Member ifrs-full:TopOfRangeMember
886 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
887 Estimated useful lives for depreciation using straight line method Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
888 1122 - Disclosure - Financial Risk Management and Fair Values - Additional Information (Detail) Network

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889 Disclosure of detailed information about financial instruments [table] Table

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890 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
891 Risks [member] Member ifrs-full:TypesOfRisksMember
892 100 basis points increase in interest rates [member] Member znh:OneHundredBasisPointIncreaseInMarketInterestRateMember
893 100 basis points decrease in interest rates [member] Member znh:OneHundredBasisPointDecreaseInMarketInterestRateMember
894 10 percent increase in jet fuel price [Member] Member znh:TenPercentageIncreaseInCommodityPriceRiskMember
895 10 percent decrease in jet fuel price [Member] Member znh:TenPercentageDecreaseInCommodityPriceRiskMember
896 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
897 Counterparties [member] Member ifrs-full:CounterpartiesMember
898 Billing and Settlement Plan agents [Member] Member znh:BillingAndSettlementsPlanAgentsMember
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900 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
901 Other trade receivables [member] Member znh:OtherTradeReceivablesMember
902 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
903 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
904 Trade receivables [member] Member ifrs-full:TradeReceivablesMember
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906 Carrying amount [member] Member ifrs-full:CarryingAmountMember
907 Accumulated impairment provision [member] Member ifrs-full:AccumulatedImpairmentMember
908 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
909 Amount of current liabilities exceeding current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
910 Net cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
911 Net cash used in investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
912 Net cash generated from/(used in) financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
913 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
914 Approximate maximum amount available of banking facilities with PRC banks and financial institutions for providing bank financing Concept (Monetary) As Of Credit znh:AvailableBorrowingFacilities
915 Approximate unutilised bank financing Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
916 Increase/(decrease) on profit after tax and retained profits Concept (Monetary) As Of ifrs-full:RiskExposureAssociatedWithInstrumentsSharingCharacteristic
917 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
918 Credit loss allowance for other trade receivables Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
919 Impaired trade receivables Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
920 Increase/(decrease) on fuel cost Concept (Monetary) As Of znh:RiskExposureAssociatedWithJetFuelPrice
921 Debt ratio Concept (Percent) As Of znh:DebtRatio
922 1123 - Disclosure - Financial Risk Management and Fair Values - Remaining Contractual Maturities of Non-derivative Financial Liabilities Based on Contractual Undiscounted Cash Flows (Detail) Network

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923 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

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925 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
926 Within 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
927 After 1 year but within 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
928 After 2 years but within 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
929 After 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
930 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
931 Borrowings, Contractual undiscounted cash outflow Concept (Monetary) As Of Credit ifrs-full:BankBorrowingsUndiscountedCashFlows
932 Obligations under finance leases, Contractual undiscounted cash outflow Concept (Monetary) As Of Credit ifrs-full:GrossFinanceLeaseObligations
933 Trade and other payables and accrued charges, Contractual undiscounted cash outflow Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
934 Non-derivative financial liabilities, Total contractual undiscounted cash outflow Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
935 Borrowings, Carrying amount Concept (Monetary) As Of Credit ifrs-full:Borrowings
936 Obligations under finance leases, Carrying amount Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
937 Trade and other payables and accrued charges, Carrying amount Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
938 Non-derivative financial liabilities, Total carrying amount Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtAmortisedCost
939 1124 - Disclosure - Financial Risk Management and Fair Values - Sensitivity Analysis of Significant Foreign Exchange Rates and Impact on Profit after Tax and Retained Profits (Detail) Network

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940 Disclosure of nature and extent of risks arising from financial instruments [table] Table

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941 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
942 Risks [member] Member ifrs-full:TypesOfRisksMember
943 1 percent appreciation of Renminbi against foreign currency [member] Member znh:HypotheticalIncreaseDueToChangeInExchangeRatesMember
944 1 percent depreciation of Renminbi against foreign currency [member] Member znh:HypotheticalDecreaseDueToChangeInExchangeRatesMember
945 10 percent appreciation of Renminbi against foreign currency [member] Member znh:TenPercentageStrengtheningInForeignExchangeRateMember
946 10 percent depreciation of Renminbi against foreign currency [member] Member znh:TenPercentageWeakeningInForeignExchangeRateMember
947 Currency [Axis] Axis srt:CurrencyAxis
948 All Currencies [Domain] Member currency:AllCurrenciesDomain
949 USD [member] Member currency:USD
950 EURO [member] Member currency:EUR
951 JPY [member] Member currency:JPY
952 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
953 Appreciation/ (depreciation) of Remninbi against foreign currency Concept (Percent) For Period znh:IncreaseDecreaseInForeignCurrencyExchangeRatePercentage
954 Increase/(decrease) on profit after tax and retained profits Concept (Monetary) As Of ifrs-full:RiskExposureAssociatedWithInstrumentsSharingCharacteristic
955 1125 - Disclosure - Financial Risk Management and Fair Values - Disclosure of Exposure to Credit Risk and Expected Credit Losses for Air Ticket Receivables (Detail) Network

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956 Disclosure of credit risk exposure [table] Table

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957 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
958 Carrying amount [member] Member ifrs-full:CarryingAmountMember
959 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
960 Loss allowance [member] Member znh:LossAllowanceMember
961 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
962 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
963 Trade receivables [member] Member ifrs-full:TradeReceivablesMember
964 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
965 Past due status [member] Member ifrs-full:PastDueStatusMember
966 Within 3 month [member] Member ifrs-full:NotLaterThanThreeMonthsMember
967 More than 3 month but less than 1 year [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
968 After 1 year but within 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
969 More than 2 years but less than 3 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
970 More than 3 years [member] Member ifrs-full:LaterThanThreeYearsMember
971 Disclosure of credit risk exposure [line items] LineItems ifrs-full:DisclosureOfCreditRiskExposureLineItems
972 Expected loss rate % Concept (Percent) As Of ifrs-full:ExpectedCreditLossRate
973 Gross carrying amount Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
974 Loss allowance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
975 1126 - Disclosure - Financial Risk Management and Fair Values - Disclosure of Trade Debtors Impaired (Detail) Network

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976 Disclosure of financial assets that are either past due or impaired [table] Table

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977 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
978 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
979 Trade receivables [member] Member ifrs-full:TradeReceivablesMember
980 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
981 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
982 Neither past due nor impaired [member] Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
983 Past due but not impaired [member] Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
984 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
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986 More than 3 month but less than 1 year [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
987 More than 1 year [member] Member ifrs-full:LaterThanOneYearMember
988 Disclosure of financial assets that are either past due or impaired [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
989 Trade receivables Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
990 1127 - Disclosure - Financial Risk Management and Fair Values - Schedule of Movement in the Allowances for Loan Losses (Detail) Network

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991 Disclosure of financial assets [table] Table

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993 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
994 Trade receivables [member] Member ifrs-full:TradeReceivablesMember
995 Accounting estimates [axis] Axis ifrs-full:AccountingEstimatesAxis
996 Accounting estimates [member] Member ifrs-full:AccountingEstimatesMember
997 IAS 39 carrying amount [member] Member znh:IAS39Member
998 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
999 Beginning balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1000 Amounts written off during the year Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1001 Impairment losses written back Concept (Monetary) For Period ifrs-full:ReversalAllowanceAccountForCreditLossesOfFinancialAssets
1002 Impairment losses recognised during the year Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1003 Ending balance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1004 1128 - Disclosure - Financial Risk Management and Fair Values - Carrying Value of Financial Instruments Measured at Fair Value on a Recurring Basis (Detail) Network

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1005 Disclosure of fair value measurement of assets [table] Table

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1007 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1008 Level 1 [Member] Member ifrs-full:Level1OfFairValueHierarchyMember
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1027 Available-for-sale financial assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAvailableforsale
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1053 Expected dividend payout rate during the projection period Concept (Percent) For Period znh:ExpectedDividendPayoutRateForNontradableShares
1054 Discount rate Concept (Percent) For Period ifrs-full:InterestRateSignificantUnobservableInputsAssets
1055 1130 - Disclosure - Operating Revenue - Summary of Operation of Civil Aviation, Including the Provision of Passenger, Cargo, Mail Delivery, and Other Extended Transportation Services (Detail) Network

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1056 Implied Table Table

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1058 Revenue from contracts with customers within the scope of IFRS 15: Abstract ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract
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1060 Cargo and mail Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfCargoAndMailTransportServices
1061 Commission income Concept (Monetary) For Period Credit znh:RevenueFromCommissionIncome
1062 Hotel and tour operation income Concept (Monetary) For Period Credit ifrs-full:RevenueFromHotelOperations
1063 General aviation income Concept (Monetary) For Period Credit znh:RevenueFromGeneralAviationIncome
1064 Ground services income Concept (Monetary) For Period Credit znh:RevenueFromGroundServicesIncome
1065 Expired sales in advance of carriage Concept (Monetary) For Period Credit znh:RevenueFromExpiredSalesInAdvanceOfCarriage
1066 Air catering income Concept (Monetary) For Period Credit znh:RevenueFromAirCateringIncome
1067 Cargo handling income Concept (Monetary) For Period Credit znh:RevenueFromCargoHandlingIncome
1068 Others Concept (Monetary) For Period Credit znh:RevenueFromOtherServices
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1078 Implied Table Table

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1105 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1106 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1107 Income tax Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1108 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
1109 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
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1112 Credit loss Concept (Monetary) For Period Debit znh:CreditLossRecognisedInProfitOrLoss
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1116 Remeasurement of the originally held equity interests in a joint venture Concept (Monetary) For Period Credit znh:RemeasurementOfOriginallyHeldEquityInterestsInJointVenture
1117 Gain on deemed disposal of a subsidiary Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedWhenControlInSubsidiaryIsLost
1118 Fair value movement of derivative financial instruments Concept (Monetary) For Period Credit znh:GainLossOnDerivativeFinancialInstruments
1119 Non-current assets additions during the year# Concept (Monetary) For Period Debit ifrs-full:AdditionsToNoncurrentAssets
1120 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
1121 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1122 1134 - Disclosure - Segment Reporting - Revenues by Geographical Segment (Detail) Network

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*

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1149 Cargo and mail Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfCargoAndMailTransportServices
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1155 Total Concept (Monetary) For Period Credit znh:OtherOperatingRevenue
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1157 Disclosure of Operating Segments [Table] Table

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*

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1162 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1163 Reclassification of expired sales in advance of carriage [Member] Member znh:ReclassificationOfExpiredSalesInAdvanceOfCarriageMember
1164 Reclassification of sales tax [Member] Member znh:ReclassificationOfSalesTaxMember
1165 Adjustments arising from business combinations under common control [Member] Member znh:BusinessCombinationsUnderCommonControlMember
1166 Capitalisation of exchange difference of specific loans [Member] Member znh:CapitalizationOfExchangeDifferenceOfSpecificLoansMember
1167 Government grants [Member] Member znh:GovernmentGrantsMember
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1171 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1172 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
1173 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1174 1137 - Disclosure - Flight Operation Expenses - Summary of Flight Operation Expenses (Detail) Network

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1175 Implied Table Table

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1176 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
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1178 Flight personnel payroll and welfare Concept (Monetary) For Period Debit znh:FlightPersonnelPayrollAndWelfareExpense
1179 Aircraft operating lease charges Concept (Monetary) For Period Debit znh:AircraftOperatingLeaseCharges
1180 Air catering expenses Concept (Monetary) For Period Debit znh:AirCateringExpenses
1181 Civil Aviation Development Fund Concept (Monetary) For Period Debit znh:CivilAviationDevelopmentFund
1182 Training expenses Concept (Monetary) For Period Debit znh:TrainingExpenses
1183 Others Concept (Monetary) For Period Debit znh:OtherFlightOperationExpenses
1184 Flight operation expenses Concept (Monetary) For Period Debit znh:FlightOperationgCostAndExpense
1185 1138 - Disclosure - Maintenance Expenses - Summary of Maintenance Expenses (Detail) Network

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*

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1186 Implied Table Table

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1187 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
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1189 Staff payroll and welfare Concept (Monetary) For Period Debit znh:PayrollAndRelatedBenefits
1190 Maintenance materials Concept (Monetary) For Period Debit znh:MaintenanceMaterialsUsed
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1192 1139 - Disclosure - Aircraft and Transportation Service Expenses - Summary of Aircraft and Transportation Service Expenses (Detail) Network

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*

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1193 Implied Table Table

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1197 Airport and transportation service expenses Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
1198 1140 - Disclosure - Promotion and Selling Expenses - Summary of Promotion and Selling Expenses (Detail) Network

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*

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1199 Implied Table Table

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1200 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1201 Sales commissions Concept (Monetary) For Period Debit znh:FeesAndCommissionsIncurredForSalesActivities
1202 Ticket office expenses Concept (Monetary) For Period Debit znh:TicketOfficeExpenses
1203 Computer reservation services Concept (Monetary) For Period Debit znh:ComputerAndSoftwareExpenses
1204 Advertising and promotion Concept (Monetary) For Period Debit znh:AdvertisingAndPromotionExpense
1205 Others Concept (Monetary) For Period Debit znh:OtherPromotionAndSellingExpenses
1206 Promotion and selling expenses Concept (Monetary) For Period Debit ifrs-full:SalesAndMarketingExpense
1207 1141 - Disclosure - General and Administrative Expenses - Summary of General and Administrative Expenses (Detail) Network

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*

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*

*

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1211 Auditors' remuneration Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
1212 - Audit services Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForAuditServices
1213 - Non-audit services Concept (Monetary) For Period Debit ifrs-full:AuditorsRemunerationForOtherServices
1214 Other taxes and levies Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
1215 General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
1216 1142 - Disclosure - Depreciation and Amortisation - Summary of Depreciation and Amortisation (Detail) Network

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*

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1224 Amortisation of deferred benefits and gains Concept (Monetary) For Period Credit znh:AmortisationExpenseOfDeferredBenefitsAndGainsAdjustment
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1227 1143 - Disclosure - Staff Costs - Summary of Staff Costs (Detail) Network

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*

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1228 Implied Table Table

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1232 Other retirement welfare subsidy Concept (Monetary) For Period Debit znh:OtherEmployeeExpenses
1233 Early retirement benefits (Note 46) Concept (Monetary) For Period Debit znh:EarlyRetirementBenefitsExpense
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1235 1144 - Disclosure - Other Net Income - Summary of Other Net Income (Detail) Network

*

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http://www.csair.com/taxonomy/role/DisclosureOtherNetIncomeSummaryOfOtherNetIncome
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*

*

znh:DisclosureOfOtherOperatingIncomeTable
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1242 Government grants Concept (Monetary) For Period Credit ifrs-full:RevenueFromGovernmentGrants
1243 Gains on disposal of property, plant and equipment and construction in progress Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfNoncurrentAssets
1244 Penalty income Concept (Monetary) For Period Credit znh:PenaltyIncome
1245 Others Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
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1247 1145 - Disclosure - Interest Expense - Summary of Interest Expense (Detail) Network

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1248 Implied Table Table

*

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1251 Interest relating to obligations under finance leases Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnFinanceLeases
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1253 Total interest expense on financial liabilities not at fair value through profit or loss Concept (Monetary) For Period Debit ifrs-full:InterestExpenseForFinancialLiabilitiesNotAtFairValueThroughProfitOrLoss
1254 Less: interest expense capitalised (Note) Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
1255 Interest expense net of capitalized Concept (Monetary) For Period Debit znh:InterestExpenseNetOfCapitalized
1256 Interest rate swaps: cash flow hedge, reclassified from equity (Note 17) Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax
1257 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1258 1146 - Disclosure - Interest Expense - Summary of Interest Expense (Parenthetical) (Detail) Network

*

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1259 Implied Table Table

*

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1262 1147 - Disclosure - Income Tax - Income Tax Expense in Consolidated Income Statement (Detail) Network

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1263 Implied Table Table

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1267 (Over)/under-provision in prior year Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1268 Current tax expense Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
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1270 Origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
1271 Tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1272 1148 - Disclosure - Income Tax - Additional Information (Detail) Network

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1273 Implied Table Table

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1277 1149 - Disclosure - Income Tax - Reconciliation between Actual Tax Expense and Calculated Tax Based on Accounting Profit at Applicable Tax Rates (Detail) Network

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1278 Implied Table Table

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1280 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1281 Notional tax on profit before taxation, calculated at the rates applicable to profits in the tax jurisdictions concerned (Note 16(a)) Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1282 Non-deductible expenses Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1283 Share of results of associates and joint ventures and other non-taxable income Concept (Monetary) For Period Credit ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
1284 Taxable temporary differences for which no deferred tax liabilities were recognised Concept (Monetary) For Period Credit znh:TaxableTemporaryDifferencesForWhichNoDeferredTaxLiabilitiesWereRecognised
1285 Unused tax losses and deductible temporary differences for which no deferred tax assets were recognized Concept (Monetary) For Period Debit znh:UnusedTaxLossesAndDeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetsWereRecognized
1286 Utilization of unused tax losses and deductible temporary differences for which no deferred tax assets were recognized in prior years Concept (Monetary) For Period Credit ifrs-full:TaxBenefitArisingFromPreviouslyUnrecognisedTaxLossTaxCreditOrTemporaryDifferenceOfPriorPeriodUsedToReduceCurrentTaxExpense
1287 (Over)/under-provision in prior year Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1288 Super deduction of research and development expenses Concept (Monetary) For Period Credit znh:TaxBenfitFromSuperDeductionOfResearchAndDevelopmentExpenses
1289 Tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1290 1150 - Disclosure - Other Comprehensive Income - Summary of Other Comprehensive Income (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureOtherComprehensiveIncomeSummaryOfOtherComprehensiveIncome
1291 Implied Table Table

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1293 Cash flow hedges: Abstract ifrs-full:CashFlowHedgesAbstract
1294 Effective portion of changes in fair value of hedging instruments recognized during the year Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnCashFlowHedgesBeforeTax
1295 Reclassification adjustments for amounts transferred to profit or loss: - interest expense (Note 15) Concept (Monetary) For Period Debit ifrs-full:ReclassificationAdjustmentsOnCashFlowHedgesBeforeTax
1296 Net deferred tax debited to other comprehensive income Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
1297 Net movement in the fair value reserve during the year recognized in other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
1298 Equity investments measured at FVOCI: Abstract znh:GainsLossesOnInvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeAbstract
1299 Changes in fair value recognised during the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxGainsLossesFromInvestmentsInEquityInstruments
1300 Net deferred tax debited to other comprehensive income Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToInvestmentsInEquityInstrumentsOfOtherComprehensiveIncome
1301 Net movement in the fair value reserve (non-recycling) during the year recognised in other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments
1302 Share of other comprehensive income of associates Abstract ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodNetOfTaxAbstract
1303 Will not be reclassified to profit or loss Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillNotBeReclassifiedToProfitOrLossBeforeTax
1304 May be reclassified subsequently to profit or loss Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
1305 Net movement during the year recognised in other comprehensive income Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1306 Differences resulting from the translation of foreign currency financial statements Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
1307 Available-for-sale financial assets: Abstract ifrs-full:AvailableforsaleFinancialAssetsAbstract
1308 Changes in fair value recognized during the year Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
1309 Net deferred tax debited to other comprehensive income Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
1310 Net movement in the fair value reserve during the year recognized in other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
1311 1151 - Disclosure - Earnings Per Share - Additional Information (Detail) Network

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1312 Implied Table Table

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1313 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
1314 Profit attributable to equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
1315 Weighted average number of shares in issue Concept (Shares) For Period ifrs-full:WeightedAverageShares
1316 Number of dilutive potential ordinary shares Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1317 1152 - Disclosure - Earning Per Share - Summary of Earnings per Share (Detail) Network

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1318 Earnings per share [table] Table

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*

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1322 H Shares (par value RMB1.00 per share) [member] Member znh:HSharesMember
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1325 Effect of issuance of shares Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
1326 Weighted average number of ordinary shares at December 31 Concept (Shares) As Of znh:WeightedAverageSharesEndingBalance
1327 1153 - Disclosure - Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentNetSummaryOfPropertyPlantAndEquipmentNet
1328 Disclosure of detailed information about property, plant and equipment [table] Table

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1332 Buildings [Member] Member ifrs-full:BuildingsMember
1333 Owned aircraft [member] Member ifrs-full:OwnedAircraftMember
1334 Aircraft acquired under finance leases [member] Member ifrs-full:AircraftUnderFinanceLeaseMember
1335 Other flight equipment including rotables [Member] Member znh:OtherFlightEquipmentIncludingRotablesMember
1336 Machinery, equipment and vehicles [member] Member znh:MachineryEquipmentAndVehiclesMember
1337 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1338 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1339 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1340 Accumulated depreciation and impairment losses [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1341 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1342 Beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1343 Acquisitions through business combinations Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
1344 Depreciation charge for the year Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1345 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1346 Transfer from construction in progress Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
1347 Transfer to lease prepayments Concept (Monetary) For Period Credit znh:IncreaseDecreaseThroughTransfersFromTransferFromLeasePrepayments
1348 Reclassification on change of holding intention Concept (Monetary) For Period Credit znh:IncreaseDecreaseThroughReclassificationOnChangeOfHoldingIntentionPropertyPlantAndEquipment
1349 Reclassification on exercise of purchase option Concept (Monetary) For Period Credit znh:IncreaseDecreaseThroughReclassificationOnExerciseOfPurchaseOptionPropertyPlantAndEquipment
1350 Transfer to assets held for sale Concept (Monetary) For Period Credit znh:TransferToAssetsHeldForSale
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1352 Provision for impairment losses Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1353 Impairment losses written off on disposals Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1354 Ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1355 1154 - Disclosure - Property, Plant and Equipment, Net - Additional Information (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentNetAdditionalInformation
1356 Disclosure of detailed information about property, plant and equipment [table] Table

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*

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1359 Owned and finance leased aircraft [member] Member ifrs-full:AircraftMember
1360 Flight equipment [member] Member znh:FlightEquipment1Member
1361 Boeing aircraft [member] Member srt:B777200Member
1362 In the process of applying for certain title/right certificates [member] Member znh:PropertyOwnershipCertificateMember
1363 Investment properties [member] Member ifrs-full:InvestmentPropertyMember
1364 Airbus aircraft [member] Member srt:A320Member
1365 Boeing aircraft and Airbus aircraft [member] Member znh:Boeing777200Aircraft757200AndAirbusA320Member
1366 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
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1368 Accumulated impairment provision [member] Member ifrs-full:AccumulatedImpairmentMember
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1371 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
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1373 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1374 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1375 Approximate aggregate carrying value of certain property, plant and equipment mortgaged under certain obligations Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
1376 Number of aircraft Concept (Integer) For Period znh:NumberOfAircrafts
1377 Impairment losses written off on disposals Concept (Monetary) For Period ifrs-full:ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1378 Lease term for investment properties and certain flight training facilities under operating leases Concept (Text/String) For Period ifrs-full:DescriptionOfMaterialLeasingArrangementsByLessorClassifiedAsOperatingLease
1379 Rental income for investment properties and certain flight training facilities under operating leases Concept (Monetary) For Period Credit ifrs-full:RentalIncome
1380 1155 - Disclosure - Property, Plant and Equipment, Net - Future Minimum Lease Income under Non-cancellable Operating Leases (Detail) Network

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1381 Disclosure of detailed information about property, plant and equipment [table] Table

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*

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1387 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1388 Future minimum lease income under non-cancellable operating leases Concept (Monetary) As Of Debit ifrs-full:MinimumLeasePaymentsReceivableUnderNoncancellableOperatingLease
1389 1156 - Disclosure - Construction in Progress - Summary of Construction in Progress (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureConstructionInProgressSummaryOfConstructionInProgress
1390 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

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1394 Others [member] Member znh:OtherConstructionInProgressMember
1395 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
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1397 Additions Concept (Monetary) For Period Debit znh:IncreaseDecreaseInConstructionInProgressAdditionsDuringThePeriod
1398 Transferred to property, plant and equipment Concept (Monetary) For Period Credit znh:IncreaseDecreaseInConstructionInProgressThroughTransfersFromToPropertyPlantAndEquipment
1399 Transferred to other assets upon completion of development Concept (Monetary) For Period Credit znh:IncreaseDecreaseThroughTransfersToPropertyPlantAndEquipmentConstructionInProgress
1400 Transferred to lease prepayments Concept (Monetary) For Period Credit znh:IncreaseDecreaseThroughTransfersToFromLeasePrepaymentsConstructionInProgress
1401 Disposals Concept (Monetary) For Period Credit znh:IncreaseDecreaseInConstructionInProgressDisposalDuringPeriod
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1403 1157 - Disclosure - Lease Prepayments - Additional Information (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureLeasePrepaymentsAdditionalInformation
1404 Disclosure of lease prepayments [table] Table

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1418 Land use rights Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
1419 Approximate aggregate carrying value of certain land use rights mortgaged for certain bank borrowings Concept (Monetary) As Of Debit znh:LandUseRightsUsedAsMortgage
1420 1158 - Disclosure - Goodwill - Summary of Goodwill (Detail) Network

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1421 Implied Table Table

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1425 Ending balance Concept (Monetary) As Of Debit ifrs-full:Goodwill
1426 1159 - Disclosure - Goodwill Allocation to Cash Generating Units CGU Identified According to Type of Operation (Detail) Network

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1427 Disclosure of reconciliation of changes in goodwill [table] Table

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1430 Southern Airlines Group Import and Export Trading Company [member] Member znh:SouthernAirlinesGroupImportAndExportTradingCompanyMember
1431 Xiamen Airlines Culture and Media Co., Ltd [member] Member znh:XiamenAirlinesCultureAndMediaCoLtdMember
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1434 1160 - Disclosure - Goodwill - Additional Information (Detail) Network

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1435 Disclosure of information for cash-generating units [table] Table

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1440 Disclosure of information for cash-generating units [line items] LineItems ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
1441 Discount rate used in determining recoverable amount of the CGU based on value-in-use calculation Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesUsedInCurrentEstimateOfValueInUse
1442 1161 - Disclosure - Subsidiaries - List of Particular Subsidiaries Principally Affect Results Assets or Liabilities (Detail) Network

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1443 Disclosure of subsidiaries [table] Table

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1445 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1446 China Southern Airlines Henan Airlines Company Limited [Member] Member znh:ChinaSouthernAirlinesHenanAirlinesCompanyLimitedMember
1447 Xiamen Airlines Company Limited [member] Member znh:XiamenAirlinesCompanyLimitedMember
1448 Chongqing Airlines Company Limited [member] Member znh:ChongqingAirlinesCompanyLimitedMember
1449 Shantou Airlines Company Limited [member] Member znh:ShantouAirlinesCompanyLimitedMember
1450 Zhuhai Airlines Company Limited [member] Member znh:ZhuhaiAirlinesCompanyLimitedMember
1451 Guizhou Airlines Company Limited [member] Member znh:GuizhouAirlinesCompanyLimitedMember
1452 Guangzhou Nanland Air Catering Company Limited [member] Member znh:GuangzhouNanlandAirCateringCompanyLimitedMember
1453 Guangzhou Baiyun International Logistic Company Limited [member] Member znh:GuangzhouBaiyunInternationalLogisticCompanyLimitedMember
1454 Beijing Southern Airlines Ground Services Company Limited [member] Member znh:BeijingSouthernAirlinesGroundServicesCompanyLimitedMember
1455 Nan Lung International Freight Limited [member] Member znh:NanLungInternationalFreightLimitedMember
1456 Southern Airlines General Aviation Company Limited [member] Member znh:SouthernAirlinesGeneralAviationCompanyLimitedMember
1457 Southern Airlines Group Import and Export Trading Company [member] Member znh:SouthernAirlinesGroupImportAndExportTradingCompanyMember
1458 Zhuhai Xiang Yi Aviation Technology Company Limited [member] Member znh:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
1459 China Southern Airlines Xiongan Airlines Company Limited [member] Member znh:ChinaSouthernAirlinesXionganAirlinesCompanyLimitedMember
1460 China Southern West Australian Flying College Proprietary Limited [member] Member znh:ChinaSouthernWestAustralianFlyingCollegeProprietaryLimitedMember
1461 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
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1465 Principal activity Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
1466 1162 - Disclosure - Subsidiaries - Additional Information (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureSubsidiariesAdditionalInformation
1467 Disclosure of subsidiaries [table] Table

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ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
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1470 Xiamen Airlines Culture and Media Co., Ltd [member] Member znh:XiamenAirlinesCultureAndMediaCoLtdMember
1471 Southern Airlines Group Import and Export Trading Company [member] Member znh:SouthernAirlinesGroupImportAndExportTradingCompanyMember
1472 China Southern West Australian Flying College Proprietary Limited [member] Member znh:ChinaSouthernWestAustralianFlyingCollegeProprietaryLimitedMember
1473 Zhuhai Xiang Yi Aviation Technology Company Limited [member] Member znh:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
1474 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1475 Capital injection Concept (Monetary) For Period Credit znh:CapitalInjectionOfNoncontrollingInterestsInSubsidiary
1476 Proportion of ownership interest held by the Company Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1477 Profit (loss) from the acquisition date to year end Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfAcquiree
1478 Consolidated profit decrease if acquisition had occurred at beginning of year Concept (Monetary) For Period Credit znh:IncreaseDecreaseInProfitLossOfCombinedEntity
1479 Consolidated revenue increase if acquisition had occurred at beginning of year Concept (Monetary) For Period Credit znh:IncreaseDecreaseInRevenueOfCombinedEntity
1480 Revenue from the acquisition date to year end Concept (Monetary) For Period Credit ifrs-full:RevenueOfAcquiree
1481 Consolidated revenue increase if acquisition had occurred at beginning of year Concept (Monetary) For Period Credit ifrs-full:RevenueOfCombinedEntity
1482 Consolidated profit increase if acquisition had occurred at beginning of year Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfCombinedEntity
1483 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
1484 1163 - Disclosure - Subsidiaries - Financial Information Related to Acquisition of Zhuhai Xiang Yi Aviation Technology Company Limited (Detail) Network

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1485 Disclosure of detailed information about business combination [table] Table

*

*

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1487 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1488 China Southern West Australian Flying College Proprietary Limited [member] Member znh:ChinaSouthernWestAustralianFlyingCollegeProprietaryLimitedMember
1489 Zhuhai Xiang Yi Aviation Technology Company Limited [member] Member znh:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
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1494 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
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1497 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1498 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherAssets
1499 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1500 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1501 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1502 Other liabilities Concept (Monetary) As Of Credit ifrs-full:OtherLiabilities
1503 Total net identifiable assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1504 Cash consideration paid Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1505 Cash and cash equivalents acquired Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
1506 Net cash (inflow) outflow Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
1507 Fair value of the originally held 51% equity interests Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1508 Less: carrying value of the originally held 51% equity interests Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiariesJointVenturesAndAssociates
1509 Remeasurement of the originally held 51% equity interests Concept (Monetary) For Period Credit ifrs-full:GainLossRecognisedAsResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombination
1510 1164 - Disclosure - Subsidiaries - List of Particular Subsidiaries Principally Affect Results Assets or Liabilities (Parenthetical) (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureSubsidiariesListOfParticularSubsidiariesPrincipallyAffectResultsAssetsOrLiabilitiesParenthetical
1511 Disclosure of subsidiaries [table] Table

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*

ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1512 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1513 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1514 Xinjiang Civil Aviation Property Management Limited [member] Member znh:XinjiangCivilAviationPropertyManagementLimitedMember
1515 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1516 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1517 Southern Airlines Group Import and Export Trading Company [member] Member znh:SouthernAirlinesGroupImportAndExportTradingCompanyMember
1518 Zhuhai Xiang Yi Aviation Technology Company Limited [member] Member znh:ZhuhaiXiangYiAviationTechnologyCompanyLimitedMember
1519 Xiamen Airlines Culture and Media Co., Ltd [member] Member znh:XiamenAirlinesCultureAndMediaCoLtdMember
1520 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1521 Percentage of voting equity interests acquired Concept (Percent) As Of ifrs-full:PercentageOfVotingEquityInterestsAcquired
1522 Cash consideration paid Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1523 Percentage of equity interest before acquisition Concept (Percent) As Of znh:PercentageOfEquityInterestBeforeAcquisition
1524 Capital injection from non-controlling interests holder Concept (Monetary) For Period Credit znh:CapitalInjectionFromNoncontrollingInterestsOfSubsidiaries
1525 Group's effective interest in associate Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1526 1165 - Disclosure - Subsidiaries - Financial Information Related to Acquisition of Xiamen Airlines Culture and Media Co Ltd (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureSubsidiariesFinancialInformationRelatedToAcquisitionOfXiamenAirlinesCultureAndMediaCoLtd
1527 Disclosure of detailed information about business combination [table] Table

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*

ifrs-full:DisclosureOfBusinessCombinationsTable
1528 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1529 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1530 Xiamen Airlines Culture and Media Co., Ltd [member] Member znh:XiamenAirlinesCultureAndMediaCoLtdMember
1531 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
1532 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
1533 Cash consideration paid Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1534 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1535 Cash and cash equivalents acquired Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
1536 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1537 Net cash (inflow) outflow Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
1538 Total consideration transferred Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1539 The fair value of 49% equity of XACM on the acquisition date Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1540 Total net identifiable assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1541 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1542 1166 - Disclosure - Subsidiaries - Summary of Financial Information Related to Acquisition (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureSubsidiariesSummaryOfFinancialInformationRelatedToAcquisition
1543 Disclosure of detailed information about business combination [table] Table

*

*

ifrs-full:DisclosureOfBusinessCombinationsTable
1544 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1545 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1546 Southern Airlines Group Import and Export Trading Company [member] Member znh:SouthernAirlinesGroupImportAndExportTradingCompanyMember
1547 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
1548 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1549 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
1550 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1551 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1552 Total net identifiable assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1553 Consideration, satisfied by cash Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1554 Cash consideration paid Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1555 Cash and cash equivalents acquired Concept (Monetary) For Period Debit ifrs-full:CashAndCashEquivalentsInSubsidiaryOrBusinessesAcquiredOrDisposed2013
1556 Net cash outflow Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
1557 Total consideration transferred Concept (Monetary) As Of Credit ifrs-full:CashTransferred
1558 Fair value of identifiable net assets Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1559 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
1560 1167 - Disclosure - Subsidiaries - Disclosure of Disposal of Subsidiaries (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureSubsidiariesDisclosureOfDisposalOfSubsidiaries
1561 Disclosure of disposals [table] Table

*

*

znh:DisclosureOfDisposalsTable
1562 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1563 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1564 Xinjiang Civil Aviation Property Management Limited [member] Member znh:XinjiangCivilAviationPropertyManagementLimitedMember
1565 Disclosure of Operating Profit [line items] LineItems znh:DisclosureOfOperatingProfitLineItems
1566 Assets deemed disposed of: Abstract znh:NetAssetsDisposalOfAbstract
1567 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1568 Other non-current assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1569 Trade and other receivables Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherReceivables
1570 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1571 Other current assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1572 Trade and other payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayables
1573 Other current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
1574 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
1575 Total net identifiable assets Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1576 Non-controlling interests in the former subsidiary Concept (Monetary) For Period Credit ifrs-full:PortionOfGainsLossesRecognisedWhenControlOfSubsidiaryIsLostAttributableToDerecognisingRegulatoryDeferralAccountBalancesInFormerSubsidiary
1577 Gain on deemed disposal of subsidiary Concept (Monetary) For Period Credit znh:GainOnDeemedDisposalOfSubsidiary
1578 Fair value of the remaining equity interests Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfEquityInterestInAcquireeHeldByAcquirerImmediatelyBeforeAcquisitionDate
1579 Net gain on deemed disposal and losing control Concept (Monetary) For Period Debit znh:NetGainOnDeemedDisposalAndLosingControl
1580 Net cash outflow from the deemed disposal Concept (Monetary) For Period Credit znh:NetCashOutflowFromDeemedDisposal
1581 1168 - Disclosure - Subsidiaries - Disclosure of Disposal of Subsidiaries (Parenthetical) (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureSubsidiariesDisclosureOfDisposalOfSubsidiariesParenthetical
1582 Disclosure of disposals [table] Table

*

*

znh:DisclosureOfDisposalsTable
1583 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1584 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1585 Xinjiang Civil Aviation Property Management Limited [member] Member znh:XinjiangCivilAviationPropertyManagementLimitedMember
1586 Disclosure of Operating Profit [line items] LineItems znh:DisclosureOfOperatingProfitLineItems
1587 Group's effective interest in associate Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1588 1169 - Disclosure - Subsidiaries - Summarized Financial Information of Subsidiary with Material Non-controlling Interests: Xiamen Airlines Company Limited (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureSubsidiariesSummarizedFinancialInformationOfSubsidiaryWithMaterialNoncontrollingInterestsXiamenAirlinesCompanyLimited
1589 Disclosure of subsidiaries [table] Table

*

*

ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1590 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1591 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1592 Xiamen Airlines Company Limited [member] Member ifrs-full:SubsidiariesWithMaterialNoncontrollingInterestsMember
1593 Disclosure of subsidiaries [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1594 Non-controlling interests percentage Concept (Percent) For Period ifrs-full:ProportionOfVotingRightsHeldByNoncontrollingInterests
1595 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
1596 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
1597 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1598 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1599 Net assets Concept (Monetary) As Of Debit ifrs-full:NetAssetsLiabilities
1600 Carrying amount of non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
1601 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1602 Profit for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1603 Total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
1604 Profit allocated to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
1605 Dividend paid to non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
1606 Net cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
1607 Net cash generated from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
1608 Net cash used in financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
1609 1170 - Disclosure - Interest in Associates - Summary of Principal Associates (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureInterestInAssociatesSummaryOfPrincipalAssociates
1610 Disclosure of associates [table] Table

*

*

ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1611 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1612 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1613 Southern Airlines Group Finance Co., Ltd [member] Member znh:SourthernAirlinesGroupFinanceCoLtdMember
1614 Sichuan Airlines Co., Ltd [member] Member znh:SichuanAirlinesCoLtdMember
1615 Southern Airlines Culture And Media Co., Ltd. [member] Member znh:SouthernAirlinesCultureAndMediaCoLtdMember
1616 Xinjiang Civil Aviation Property Management Limited [member] Member znh:XinjiangCivilAviationPropertyManagementLimitedMember
1617 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1618 Share of net assets Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
1619 Place of establishment/operation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfAssociate
1620 Group's effective interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1621 Proportion of ownership interest held by The Company Concept (Percent) For Period znh:ProportionOfOwnershipInterestHeldByHoldingCompany
1622 Proportion of ownership interest held by Subsidiaries Concept (Percent) For Period znh:ProportionOfOwnershipInterestHeldBySubsidiary
1623 Proportion of voting rights held by the Group Concept (Percent) For Period ifrs-full:ProportionOfVotingPowerHeldInAssociate
1624 Principal activity Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
1625 1171 - Disclosure - Interest in Associates - Summarized Financial Information of Aggregated Individually Immaterial Associates (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureInterestInAssociatesSummarizedFinancialInformationOfAggregatedIndividuallyImmaterialAssociates
1626 Disclosure of associates [table] Table

*

*

ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1627 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1628 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1629 Aggregated individually immaterial associates [member] Member ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
1630 Disclosure of associates [line items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1631 Aggregate carrying amount of individually immaterial associates Concept (Monetary) As Of Debit znh:AggregateCarryingAmountOfIndividuallyImmaterialAssociates
1632 Aggregate amounts of the Group's share of Profit from continuing operations Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1633 Aggregate amounts of the Group's share of other comprehensive income Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1634 Aggregate amounts of the Group's share of total comprehensive income Concept (Monetary) For Period Credit ifrs-full:ShareOfTotalComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1635 1172 - Disclosure - Interest in Joint Ventures - Summary of Principal Joint Ventures (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureInterestInJointVenturesSummaryOfPrincipalJointVentures
1636 Disclosure of joint ventures [table] Table

*

*

ifrs-full:DisclosureOfJointVenturesTable
1637 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1638 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1639 Guangzhou Aircraft Maintenance Engineering Co., Ltd [member] Member znh:GuangzhouAircraftMaintenanceEngineeringCompanyLimitedMember
1640 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1641 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1642 MTU Maintenance Zhuhai Company Limited [member] Member znh:MtuMaintenanceZhuhaiCompanyLimitedMember
1643 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
1644 Interest in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
1645 Place of establishment/operation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOfJointVenture
1646 Group's effective interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
1647 Proportion of ownership interest held by The Company Concept (Percent) For Period znh:ProportionOfOwnershipInterestHeldByHoldingCompany
1648 Proportion of ownership interest held by Subsidiaries Concept (Percent) For Period znh:ProportionOfOwnershipInterestHeldBySubsidiary
1649 Proportion of voting rights held by the Group Concept (Percent) For Period ifrs-full:ProportionOfVotingRightsHeldInJointVenture
1650 Principal activity Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
1651 1173 - Disclosure - Interest in Joint Ventures - Summarized Financial Information of Aggregated Individually Immaterial Joint Ventures (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureInterestInJointVenturesSummarizedFinancialInformationOfAggregatedIndividuallyImmaterialJointVentures
1652 Disclosure of joint ventures [table] Table

*

*

ifrs-full:DisclosureOfJointVenturesTable
1653 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1654 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1655 Aggregated individually immaterial joint ventures [member] Member ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember
1656 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
1657 Aggregate carrying amount of individually immaterial joint ventures Concept (Monetary) As Of Debit znh:AggregateCarryingAmountOfIndividuallyImmaterialJointVentures
1658 Aggregate amounts of the Group's share of Profit from continuing operations and total comprehensive income Concept (Monetary) For Period Credit znh:AggregateAmountsOfGroupShareOfProfitFromContinuingOperationsAndTotalComprehensiveIncome
1659 1174 - Disclosure - Financial Assets - Summary of Financial Assets (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureFinancialAssetsSummaryOfFinancialAssets
1660 Disclosure of financial assets [table] Table

*

*

ifrs-full:DisclosureOfFinancialAssetsTable
1661 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1662 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1663 Non listed shares [member] Member znh:NonListedSharesMember
1664 Non-tradable shares [member] Member znh:NonTradableSharesMember
1665 Listed shares [member] Member znh:ListedSharesMember
1666 Unlisted equity securities [member] Member znh:UnlistedEquitySecuritiesMember
1667 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1668 Other equity instrument investment (FVOCI) Concept (Monetary) As Of Debit ifrs-full:NoncurrentInvestmentsInEquityInstrumentsDesignatedAtFairValueThroughOtherComprehensiveIncome
1669 Other non-current financial assets (FVPL) Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughProfitOrLoss
1670 Other investments in equity securities Concept (Monetary) As Of Debit ifrs-full:NoncurrentInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
1671 Available-for-sale financial assets Concept (Monetary) As Of Debit znh:FinancialAssetsAvailableforsaleNoncurrent
1672 Other financial assets Concept (Monetary) As Of Debit ifrs-full:OtherCurrentFinancialAssets
1673 1175 - Disclosure - Financial Assets - Summary of Financial Assets (Parenthetical) (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureFinancialAssetsSummaryOfFinancialAssetsParenthetical
1674 Disclosure of financial assets [table] Table

*

*

ifrs-full:DisclosureOfFinancialAssetsTable
1675 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1676 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1677 Unlisted equity securities [member] Member ifrs-full:EquityInvestmentsMember
1678 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1679 Dividend income Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
1680 1176 - Disclosure - Derivative Financial Instruments - Summary of Derivative Financial Instruments (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureDerivativeFinancialInstrumentsSummaryOfDerivativeFinancialInstruments
1681 Disclosure of detailed information about financial instruments [table] Table

*

*

ifrs-full:DisclosureOfFinancialInstrumentsTable
1682 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1683 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1684 Interest rate swaps [member] Member ifrs-full:InterestRateSwapContractMember
1685 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
1686 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
1687 Cross Currency Swaps [member] Member znh:CrossCurrencySwapsMember
1688 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1689 Interest rate swaps Concept (Monetary) As Of Debit znh:InterestRateSwap
1690 Cross currency swaps Concept (Monetary) As Of Credit znh:CrossCurrencySwap
1691 1177 - Disclosure - Derivative Financial Instruments - Summary of Derivative Financial Instruments (Parenthetical) (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureDerivativeFinancialInstrumentsSummaryOfDerivativeFinancialInstrumentsParenthetical
1692 Disclosure of detailed information about financial instruments [table] Table

*

*

ifrs-full:DisclosureOfFinancialInstrumentsTable
1693 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
1694 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
1695 Cross Currency Swaps [member] Member znh:CrossCurrencySwapsMember
1696 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1697 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1698 Interest rate swaps [member] Member ifrs-full:InterestRateSwapContractMember
1699 Range [axis] Axis ifrs-full:RangeAxis
1700 Ranges [member] Member ifrs-full:RangesMember
1701 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1702 Top of range [member] Member ifrs-full:TopOfRangeMember
1703 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1704 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1705 Fixed rate from 1.64% to 1.72% [member] Member ifrs-full:FixedInterestRateMember
1706 Fixed rate from 3.20% to 3.91% [member] Member znh:FixedInterestRateThreePointTwoZeroPercentageToThreePointNineOnePercentageMember
1707 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1708 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1709 Notional principal of the outstanding derivative contracts Concept (Monetary) As Of ifrs-full:NotionalAmount
1710 Fair value of the cross currency swap Concept (Monetary) As Of Credit znh:FairValueOfCrossCurrencySwap
1711 1178 - Disclosure - Changes in Fair Value of Financial Instruments - Summary of Changes in Fair Value of Financial Instruments (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureChangesInFairValueOfFinancialInstrumentsSummaryOfChangesInFairValueOfFinancialInstruments
1712 Disclosure of fair value measurement of assets [table] Table

*

*

ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
1713 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1714 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1715 Other non current financial assets at fair value through profit loss [member] Member znh:OtherNonCurrentFinancialAssetsAtFairValueThroughProfitLossMember
1716 Cross Currency Swaps [member] Member znh:CrossCurrencySwapsMember
1717 Disclosure of fair value measurement of assets [line items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1718 Increase decrease in fair value measurement assets Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInFairValueMeasurementAssets
1719 1179 - Disclosure - Deferred Tax Assets/(Liabilities) - Movements of Net Deferred Tax Assets (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureDeferredTaxAssetsLiabilitiesMovementsOfNetDeferredTaxAssets
1720 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1721 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1722 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1723 Deferred tax assets [member] Member znh:DeferredTaxAssetsMember
1724 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
1725 Liabilities [member] Member ifrs-full:LiabilitiesMember
1726 Deferred tax liabilities [member] Member znh:DeferredTaxLiabilitiesMember
1727 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1728 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1729 Accrued expenses [member] Member znh:AccruedExpensesMember
1730 Provision for major overhauls [member] Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
1731 Deferred revenue [member] Member znh:DeferredRevenueMember
1732 Provision for impairment losses [member] Member znh:ProvisionsForImpairmentLossesMember
1733 Unused tax losses [member] Member ifrs-full:UnusedTaxLossesMember
1734 Gain loss on derivative instruments [member] Member znh:GainLossOnDerivativeInstrumentsMember
1735 Others [member] Member ifrs-full:OtherTemporaryDifferencesMember
1736 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1737 Change in fair value of derivative financial instruments [member] Member ifrs-full:DerivativesMember
1738 Available-for-sale financial assets [member] Member ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
1739 Fair value remeasurement of identifiable assets in business combination [member] Member znh:FairValueRemeasurementOfIdentifiableAssetsInBusinessCombinationMember
1740 Contract Liabilities Or Other Non Current Liabilities [member] Member znh:ContractLiabilitiesOrOtherNonCurrentLiabilitiesMember
1741 Other equity instrument investment [member] Member znh:OtherEquityInstrumentInvestmentMember
1742 Other non-current financial assets [member] Member znh:OtherNoncurrentFinancialAssetsMember
1743 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1744 Beginning balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1745 Deferred income tax assets liability recognised in impact on initial application of ifrs9/15 Concept (Monetary) For Period Debit znh:DeferredIncomeTaxAssetsLiabilityRecognisedInImpactOnInitialApplicationOfIFRS9
1746 Acquired in business combination Concept (Monetary) For Period Credit znh:DeferredTaxAssetsLiabilitiesRecognisedOnAcquisitionPeriod
1747 (Charged)/credited to consolidated income statement Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1748 Charged to other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1749 Ending balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1750 1180 - Disclosure - Deferred Tax Assets/(Liabilities) - Summary of Reconciliation to the Consolidated Statement of Financial Position (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureDeferredTaxAssetsLiabilitiesSummaryOfReconciliationToTheConsolidatedStatementOfFinancialPosition
1751 Implied Table Table

*

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implied:Table
1752 Disclosure of temporary difference, unused tax losses and unused tax credits [abstract] Abstract ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAbstract
1753 Net deferred tax asset recognised in the statement of financial position Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1754 Net deferred tax liability recognised in the statement of financial position Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1755 Deferred tax liability asset Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1756 1181 - Disclosure - Deferred Tax Assets/(Liabilities) - Additional Information (Detail) Network

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*

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1757 Implied Table Table

*

*

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1759 Maximum period available in the PRC for tax losses carrying forward to set off future assessable income Concept (Text/String) For Period ifrs-full:DescriptionOfExpiryDateOfTemporaryDifferencesUnusedTaxLossesAndUnusedTaxCredits
1760 Unused tax losses for which no deferred tax assets has been recognized Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1761 Other deductible temporary differences for which no deferred tax assets has been recognized Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1762 1182 - Disclosure - Deferred Tax Assets/(Liabilities) - Analysis of Expiry Dates of Unrecognized Unused Tax Losses (Detail) Network

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*

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1763 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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*

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1767 Expiring in 2019 [member] Member znh:TwoThousandAndNineteenMember
1768 Expiring in 2021 [member] Member znh:TwoThousandAndTwentyOneMember
1769 2022 [member] Member znh:TwoThousandAndTwentyTwoMember
1770 2023 [member] Member znh:TwoThousandAndTwentyThreeMember
1771 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1772 Unused tax losses for which no deferred tax assets has been recognized Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1773 1183 - Disclosure - Other Assets - Summary of Other Assets (Detail) Network

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*

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1774 Disclosure Of Other Non-current Assets [table] Table

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*

znh:DisclosureOfOtherNoncurrentAssetsTable
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1776 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1777 Prepayment for exclusive use right of an airport terminal [member] Member znh:PrepaymentForExclusiveUseRightOfAnAirportTerminalMember
1778 Software [member] Member ifrs-full:ComputerSoftwareMember
1779 Leasehold improvements [member] Member ifrs-full:LeaseholdImprovementsMember
1780 Others [member] Member ifrs-full:OtherAssetsMember
1781 Disclosure of other non-current assets [line items] LineItems znh:DisclosureOfOtherNonCurrentAssetsLineItems
1782 Beginning balance Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1783 Amount paid to related parties Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
1784 Additions Concept (Monetary) For Period Debit znh:IncreaseInOtherNoncurrentAssets
1785 Amount paid to third parties and others Concept (Monetary) As Of Credit znh:AmountsPayableToThirdPartiesAndOthers
1786 Acquisitions through business combinations Concept (Monetary) For Period Debit znh:IncreaseThroughAcquisitionsOtherAssets
1787 Transferred from construction in progress Concept (Monetary) For Period Debit znh:IncreaseThroughTransfersFromConstructionInProgressOtherAssets
1788 Disposals Concept (Monetary) For Period Credit znh:OtherNoncurrentAssetsDisposed
1789 Amortisation for the year Concept (Monetary) For Period Credit znh:AmortizationOfTangibleAndIntangibleAssets
1790 Ending balance Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1791 1184 - Disclosure - Inventories - Summary of Inventories (Detail) Network

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*

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1792 Disclosure of inventories [table] Table

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*

znh:DisclosureOfInventoriesTable
1793 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1794 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1795 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1796 Accumulated impairment provision [member] Member ifrs-full:AccumulatedImpairmentMember
1797 Disclosure of inventories [line items] LineItems znh:DisclosureOfInventoriesLineItems
1798 Consumable spare parts and maintenance materials Concept (Monetary) As Of Debit ifrs-full:CurrentMaterialsAndSuppliesToBeConsumedInProductionProcessOrRenderingServices
1799 Other supplies Concept (Monetary) As Of Debit ifrs-full:OtherInventories
1800 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
1801 1185 - Disclosure - Inventories - Impairment of Inventory (Detail) Network

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*

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1802 Implied Table Table

*

*

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1803 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
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1805 Provision for inventories Concept (Monetary) For Period ifrs-full:InventoryWritedown2011
1806 Provision written off upon disposal Concept (Monetary) For Period Credit znh:ProvisionWrittenOffDisposalOfInventories
1807 Ending balance Concept (Monetary) As Of Credit znh:AllowanceForObsolescenceInventory
1808 1186 - Disclosure - Trade Receivables - Summary of Trade Receivables (Detail) Network

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*

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1809 Disclosure of financial assets [table] Table

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*

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1812 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1813 Loss allowance [member] Member znh:LossAllowanceMember
1814 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1815 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1816 1187 - Disclosure - Trade Receivables - Additional Information (Detail) Network

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*

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1817 Disclosure of financial assets [table] Table

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*

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1821 Top of range [member] Member ifrs-full:TopOfRangeMember
1822 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1823 Credit terms granted to sales agents and other customers Concept (Text/String) For Period ifrs-full:DescriptionOfOtherInformationUsedToAssessCreditQuality
1824 1188 - Disclosure - Trade Receivables - Ageing Analysis of Trade Receivables Based on Transaction Date (Detail) Network

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*

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1825 Disclosure of financial assets [table] Table

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*

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1828 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1829 Loss allowance [member] Member znh:LossAllowanceMember
1830 Maturity [axis] Axis ifrs-full:MaturityAxis
1831 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1832 Within 1 month [member] Member ifrs-full:NotLaterThanOneMonthMember
1833 More than 1 month but less than 3 months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
1834 More than 3 month but less than 1 year [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
1835 More than 1 year [member] Member ifrs-full:LaterThanOneYearMember
1836 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1837 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1838 1189 - Disclosure - Trade Receivables - Trade Receivables by Currencies (Detail) Network

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1839 Disclosure of financial assets [table] Table

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*

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1842 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1843 Currency [Axis] Axis srt:CurrencyAxis
1844 All Currencies [Domain] Member currency:AllCurrenciesDomain
1845 RMB [member] Member currency:CNY
1846 USD [member] Member currency:USD
1847 EURO [member] Member currency:EUR
1848 AUD [Member] Member currency:AUD
1849 TWD [Member] Member currency:TWD
1850 GBP [Member] Member currency:GBP
1851 Others [member] Member znh:OtherCurrencyMember
1852 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1853 Trade receivables Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1854 1190 - Disclosure - Other Receivables - Summary of Other Receivables (Detail) Network

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*

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1855 Disclosure of financial assets [table] Table

*

*

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1857 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1858 Gross carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1859 Allowance for doubtful accounts current [member] Member znh:AllowanceForDoubtfulAccountsCurrentMember
1860 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1861 VAT recoverable Concept (Monetary) As Of Debit ifrs-full:ValueAddedTaxReceivables
1862 Rebate receivables on aircraft acquisitions Concept (Monetary) As Of Debit znh:CurrentRebateReceivablesOnAircraftAcquisitions
1863 Term deposits Concept (Monetary) As Of Credit znh:TermDeposits
1864 Deposits for aircraft purchase Concept (Monetary) As Of Debit ifrs-full:Prepayments
1865 Government grants receivables Concept (Monetary) As Of Debit znh:GovernmentGrantsReceivable
1866 Others Concept (Monetary) As Of Debit znh:OtherMiscellaneousReceivables
1867 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherReceivables
1868 Other receivables Concept (Monetary) As Of Debit ifrs-full:OtherCurrentReceivables
1869 1191 - Disclosure - Other Receivables - Additional Information (Detail) Network

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*

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1870 Implied Table Table

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*

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1871 Disclosure of financial assets [abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
1872 Weighted average annualized interest rate of term deposit Concept (Percent) As Of znh:WeightedAverageAnnualizedInterestRateOfTermDeposit
1873 1192 - Disclosure - Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) Network

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*

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1874 Implied Table Table

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1875 Disclosure of financial assets [abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
1876 Deposits in banks and other financial institutions Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsClassifiedAsCashEquivalents
1877 Cash at bank and other financial institutions and on hand Concept (Monetary) As Of Debit ifrs-full:Cash
1878 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1879 1193 - Disclosure - Cash and Cash Equivalents - Cash and Cash Equivalents by Currencies (Detail) Network

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*

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1880 Disclosure of financial assets [table] Table

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*

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1881 Currency [Axis] Axis srt:CurrencyAxis
1882 All Currencies [Domain] Member currency:AllCurrenciesDomain
1883 RMB [member] Member currency:CNY
1884 USD [member] Member currency:USD
1885 EURO [member] Member currency:EUR
1886 JPY [member] Member currency:JPY
1887 Hong Kong Dollars [member] Member currency:HKD
1888 Others [member] Member znh:OtherCurrencyMember
1889 AUD [Member] Member currency:AUD
1890 Disclosure of financial assets [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1891 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
1892 1194 - Disclosure - Cash and Cash Equivalents - Reconciliation of Profit before Income Tax to Cash Generated from Operating Activities (Detail) Network

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1893 Implied Table Table

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1894 Disclosure of financial assets [abstract] Abstract ifrs-full:DisclosureOfFinancialAssetsAbstract
1895 Profit before income tax Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1896 Depreciation charges Concept (Monetary) For Period Debit ifrs-full:DepreciationExpense
1897 Other amortisation Concept (Monetary) For Period Debit ifrs-full:AmortisationExpense
1898 Amortisation of deferred benefits and gains Concept (Monetary) For Period Credit znh:AmortisationExpenseOfDeferredBenefitsAndGainsAdjustment
1899 Impairment losses on property, plant, equipment Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
1900 Share of associates' results Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
1901 Share of joint ventures' results Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
1902 Gain on disposal of property, plant and equipment and construction in progress Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfNoncurrentAssets
1903 Gain on deemed disposal of equity interest in a subsidiary Concept (Monetary) For Period Credit znh:GainLossOnDeemedDisposalOfEquityInterestInSubsidiary
1904 Changes in fair value of financial instruments Concept (Monetary) For Period Credit znh:GainLossOnDerivativeFinancialInstruments
1905 Remeasurement of the originally held equity interests in a joint venture Concept (Monetary) For Period Credit znh:RemeasurementOfOriginallyHeldEquityInterestsInJointVenture
1906 Interest income Concept (Monetary) For Period Credit ifrs-full:RevenueFromInterest
1907 Interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1908 Dividends received from other non-current financial assets and other equity instrument investments Concept (Monetary) For Period Debit znh:DividendReceivedFromOtherNonCurrentFinancialAssets
1909 Dividend income from investments Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
1910 Exchange losses/(gain), net Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
1911 (Increase)/decrease in inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
1912 (Increase)/decrease in trade receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
1913 (Increase)/decrease in other receivables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherOperatingReceivables
1914 (Increase)/decrease in prepaid expenses and other current assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherCurrentAssets
1915 Increase in net amounts due to related companies Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherOperatingPayables
1916 Increase/(decrease) in trade payables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
1917 Increase in contract liabilities Concept (Monetary) For Period Debit znh:AdjustmentsForIncreaseDecreaseInContractLiabilities
1918 Increase/(decrease) in sales in advance of carriage Concept (Monetary) For Period Debit znh:AdjustmentsForIncreaseDecreaseSalesInAdvanceOfCarriage
1919 Increase in other non-current liabilities Concept (Monetary) For Period Debit znh:AdjustmentsForIncreaseDecreaseInOtherNoncurrentLiabilities
1920 Increase in accrued expenses Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherCurrentLiabilities
1921 Increase/(decrease) in other liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
1922 Increase in deferred revenue Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
1923 Increase in provision for major overhauls Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseInOtherProvisionsArisingFromPassageOfTime
1924 Decrease in provision for early retirement benefits Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities
1925 (Decrease)/increase in deferred benefits and gains Concept (Monetary) For Period Debit znh:AdjustmentsForIncreaseDecreaseInDeferredBenefitsAndGains
1926 Cash generated from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
1927 1195 - Disclosure - Cash and Cash Equivalents - Summary of Reconciliation of Liabilities Arising from Financing Activities (Detail) Network

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1928 Disclosure of reconciliation of liabilities arising from financing activities [table] Table

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1929 Liabilities arising from financing activities [axis] Axis ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
1930 Liabilities arising from financing activities [member] Member ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
1931 Bank loans and other borrowings [member] Member znh:BankLoansAndOtherBorrowingsMember
1932 Obligations under finance leases [member] Member znh:ObligationsUnderFinanceLeasesMember
1933 Assets held to hedge liabilities arising from financing activities [member] Member ifrs-full:AssetsHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember
1934 Liabilities held to hedge liabilities arising from financing activities [member] Member znh:LiabilitiesHeldToHedgeLiabilitiesArisingFromFinancingActivitiesMember
1935 Disclosure of reconciliation of liabilities arising from financing activities [line items] LineItems ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesLineItems
1936 Beginning balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1937 Changes from financing cash flows: Abstract ifrs-full:ChangesInLiabilitiesArisingFromFinancingActivitiesAbstract
1938 Proceeds from bank borrowings Concept (Monetary) For Period Debit ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
1939 Proceeds from issuance of ultra-short-term financing bills Concept (Monetary) For Period Debit ifrs-full:ProceedsFromCurrentBorrowings
1940 Proceeds from corporate bonds Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfBondsNotesAndDebentures
1941 Repayment of bank borrowings Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
1942 Repayment of ultra-short-term financing bills Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
1943 Repayment of corporate bonds Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBondsNotesAndDebentures
1944 Repayment of principal under finance lease obligations Concept (Monetary) For Period Credit ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
1945 Total changes from financing cash flows Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInLiabilitiesArisingFromFinancingActivities
1946 Exchange adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
1947 Changes in fair value Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInFairValuesLiabilitiesArisingFromFinancingActivities
1948 Acquisitions through business combinations Concept (Monetary) For Period Credit znh:IncreaseThroughAcquisitionsThroughBusinessCombinationsLiabilitiesArisingFromFinancingActivities
1949 Additions of obligations under finance leases Concept (Monetary) For Period Credit ifrs-full:IncreaseThroughNewLeasesLiabilitiesArisingFromFinancingActivities
1950 Total other changes Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughOtherChangesLiabilitiesArisingFromFinancingActivities
1951 Ending Balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1952 1196 - Disclosure - Asset Held For Sale - Summary of Assets Held for Sale (Detail) Network

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1953 Assets Held For Sale [table] Table

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znh:AssetsHeldForSaleTable
1954 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
1955 Assets [member] Member ifrs-full:ClassesOfAssetsMember
1956 Buildings [Member] Member ifrs-full:BuildingsMember
1957 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1958 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1959 Owned aircraft [member] Member ifrs-full:OwnedAircraftMember
1960 Assets held for sale [line items] LineItems znh:AssetsHeldForSaleLineItems
1961 Assets held for sale Concept (Monetary) As Of Debit znh:AssetHeldForSaleCurrent
1962 1197 - Disclosure - Asset Held For Sale - Additional Information (Detail) Network

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1963 Implied Table Table

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1965 Carrying amount of assets held for sale Concept (Monetary) As Of Debit znh:AssetHeldForSaleCurrent
1966 Fair value less cost to sell Concept (Monetary) For Period Credit ifrs-full:GainLossRecognisedOnMeasurementToFairValueLessCostsToSellOrOnDisposalOfAssetsOrDisposalGroupsConstitutingDiscontinuedOperation
1967 1198 - Disclosure - Borrowings - Summary of Borrowings (Detail) Network

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1968 Disclosure of detailed information about borrowings [table] Table

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1970 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1971 Within 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1972 After 1 year but within 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1973 After 2 years but within 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
1974 After 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
1975 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1976 Non-current Abstract ifrs-full:NoncurrentPortionOfNoncurrentBorrowingsByTypeAbstract
1977 - secured (Notes (i)&(ii)&(iii)) Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentSecuredBankLoansReceived
1978 - unsecured Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentUnsecuredBankLoansReceived
1979 Long-term bank borrowings Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentLoansReceived
1980 - unsecured (Note (iv)) Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
1981 - unsecured (Note (v)) Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentNotesAndDebenturesIssued
1982 Non-current borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1983 Current Abstract ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowingsAbstract
1984 - secured (Notes (i)&(ii)&(iii)) Concept (Monetary) As Of Credit ifrs-full:CurrentSecuredBankLoansReceivedAndCurrentPortionOfNoncurrentSecuredBankLoansReceived
1985 - unsecured Concept (Monetary) As Of Credit ifrs-full:CurrentUnsecuredBankLoansReceivedAndCurrentPortionOfNoncurrentUnsecuredBankLoansReceived
1986 Short-term borrowings - unsecured Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1987 Ultra short-term financing bills - unsecured Concept (Monetary) As Of Credit ifrs-full:OtherCurrentBorrowingsAndCurrentPortionOfOtherNoncurrentBorrowings
1988 Current borrowings except current portion of corporate bond Concept (Monetary) As Of Credit znh:CurrentBorrowingsExceptCurrentPortionOfCorporateBond
1989 Current portion of corporate bond Abstract znh:CurrentPortionOfCorporateBondAbstract
1990 - unsecured (Note (iv)) Concept (Monetary) As Of Credit znh:CurrentPortionOfUnsecuredCorporateBond
1991 Current borrowings Concept (Monetary) As Of Credit ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1992 Borrowings Abstract ifrs-full:BorrowingsAbstract
1993 Total borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
1994 1199 - Disclosure - Borrowings - Summary of Borrowings (Parenthetical) (Detail) Network

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1995 Disclosure of detailed information about borrowings [table] Table

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1996 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1997 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1998 Secured bank borrowings [member] Member znh:SecuredBorrowingsMember
1999 Corporate bond [member] Member znh:CorporateBondMember
2000 Medium- term notes 1 [member] Member znh:MediumTermNotes1Member
2001 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2002 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
2003 Owned and finance leased aircraft [member] Member ifrs-full:AircraftMember
2004 Right-of-use assets and investment properties [member] Member znh:RightofuseAssetsAndInvestmentPropertiesMember
2005 Land use rights [member] Member ifrs-full:RightofuseAssetsMember
2006 Investment properties [member] Member ifrs-full:InvestmentPropertyMember
2007 Other flight equipment [member] Member znh:OtherFlightEquipmentMember
2008 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
2009 Bank borrowings used to secure assets Concept (Monetary) As Of Credit ifrs-full:SecuredBankLoansReceived
2010 Carrying amount of assets used as security for bank borrowings Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentPledgedAsSecurity
2011 Aggregate nominal value Concept (Monetary) As Of ifrs-full:NotionalAmount
2012 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2013 Borrowings maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2014 Redemption of debt Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBondsNotesAndDebentures
2015 1200 - Disclosure - Borrowings - Additional Information (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureBorrowingsAdditionalInformation
2016 Disclosure of detailed information about borrowings [table] Table

*

*

ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
2017 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2018 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2019 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
2020 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2021 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2022 Southern Airlines Group Finance Co., Ltd [member] Member znh:SourthernAirlinesGroupFinanceCoLtdMember
2023 Range [axis] Axis ifrs-full:RangeAxis
2024 Ranges [member] Member ifrs-full:RangesMember
2025 Weighted average [member] Member ifrs-full:WeightedAverageMember
2026 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
2027 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2028 Net foreign exchange gain/(loss) Concept (Monetary) For Period Credit znh:NetForeignExchangeGainLoss
2029 Loan received from related party Concept (Monetary) As Of Credit znh:LoanReceivedFromRelatedParty
2030 1201 - Disclosure - Borrowings - Details of Borrowings with Original Maturity over One Year (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureBorrowingsDetailsOfBorrowingsWithOriginalMaturityOverOneYear
2031 Disclosure of detailed information about borrowings [table] Table

*

*

ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
2032 Currency [Axis] Axis srt:CurrencyAxis
2033 All Currencies [Domain] Member currency:AllCurrenciesDomain
2034 RMB [member] Member currency:CNY
2035 USD [member] Member currency:USD
2036 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2037 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2038 Floating interest rates 90%, 95%, 100% of benchmark interest rate (stipulated by PBOC) as at December 31, 2018, with maturities through 2033 [member] Member znh:FloatingInterestRateRangingNinetyToOneHundredPercentageBenchmarkInterestRateMember
2039 Fixed interest rate at 1.20% per annum as at December 31, 2018, with maturities through 2027 [member] Member znh:FixedInterestRateAtOnePointTwoZeroMember
2040 Corporate bond - fixed bond rate at 2.97 %-3.92 % [member] Member znh:FixedInterestRateAtTwoPointNineSevenToThreePointNineTwoPercentageMember
2041 Medium-term notes- fixed interest rate at 2.97%-3.38% [member] Member znh:FixedInterestRateAtTwoPointNineSevenToThreePointThreeEightPercentageMember
2042 Floating interest rates at three-month LIBOR 3.30% per annum as at December 31, 2017, with maturities through 2019 [member] Member znh:FloatingInterestRateAboveThreeMonthLIBORMember
2043 Floating interest rates at three-month LIBOR 2.1% per annum as at December 31, 2017, with maturities through 2018 [member] Member znh:FloatingInterestRateAtThreeMonthLIBORMember
2044 Fixed interest rate at 3.32% per annum as at December 31, 2018, with maturities through 2020 [member] Member znh:FixedInterestRateAtThreePointThreeTwoPercentPerAnnumWithMaturitiesThroughTwoZeroTwoZeroMember
2045 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
2046 Borrowings with original maturity over one year Concept (Monetary) As Of Credit znh:LongTermBorrowingsIncludingCurrentPortion
2047 Less: loans due within one year classified as current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
2048 Borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
2049 1202 - Disclosure - Borrowings - Details of Borrowings with Original Maturity over One Year (Parenthetical) (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureBorrowingsDetailsOfBorrowingsWithOriginalMaturityOverOneYearParenthetical
2050 Disclosure of detailed information about borrowings [table] Table

*

*

ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
2051 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
2052 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
2053 Floating interest rates 90%, 95%, 100% of benchmark interest rate (stipulated by PBOC) as at December 31, 2018, with maturities through 2033 [member] Member znh:FloatingInterestRateRangingNinetyToOneHundredPercentageBenchmarkInterestRateMember
2054 Fixed interest rate at 1.20% per annum as at December 31, 2018, with maturities through 2027 [member] Member znh:FixedInterestRateAtOnePointTwoZeroMember
2055 Corporate bond - fixed bond rate at 2.97 %-3.92 % [member] Member znh:FixedInterestRateAtTwoPointNineSevenToThreePointNineTwoPercentageMember
2056 Medium-term notes- fixed interest rate at 2.97%-3.38% [member] Member znh:FixedInterestRateAtTwoPointNineSevenToThreePointThreeEightPercentageMember
2057 Floating interest rates at three-month LIBOR 3.30% per annum as at December 31, 2017, with maturities through 2019 [member] Member znh:FloatingInterestRateAboveThreeMonthLIBORMember
2058 Floating interest rates at three-month LIBOR 2.1% per annum as at December 31, 2017, with maturities through 2018 [member] Member znh:FloatingInterestRateAtThreeMonthLIBORMember
2059 Fixed interest rate at 3.32% per annum as at December 31, 2018, with maturities through 2020 [member] Member znh:FixedInterestRateAtThreePointThreeTwoPercentPerAnnumWithMaturitiesThroughTwoZeroTwoZeroMember
2060 Currency [Axis] Axis srt:CurrencyAxis
2061 All Currencies [Domain] Member currency:AllCurrenciesDomain
2062 RMB [member] Member currency:CNY
2063 USD [member] Member currency:USD
2064 Range [axis] Axis ifrs-full:RangeAxis
2065 Ranges [member] Member ifrs-full:RangesMember
2066 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2067 Top of range [member] Member ifrs-full:TopOfRangeMember
2068 Middle Range [member] Member znh:MiddleRangeMember
2069 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
2070 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2071 Percentage of benchmark interest rate Concept (Percent) As Of znh:PercentageOfBenchmarkLendingRate
2072 Borrowings interest rate basis Concept (Text/String) For Period ifrs-full:BorrowingsInterestRateBasis
2073 Borrowings interest rate basis adjustment Concept (Percent) As Of ifrs-full:BorrowingsAdjustmentToInterestRateBasis
2074 1203 - Disclosure - Borrowings - Borrowings by Currencies (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureBorrowingsBorrowingsByCurrencies
2075 Disclosure of detailed information about borrowings [table] Table

*

*

ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
2076 Currency [Axis] Axis srt:CurrencyAxis
2077 All Currencies [Domain] Member currency:AllCurrenciesDomain
2078 RMB [member] Member currency:CNY
2079 USD [member] Member currency:USD
2080 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
2081 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
2082 1204 - Disclosure - Obligations under Finance Leases - Additional Information (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureObligationsUnderFinanceLeasesAdditionalInformation
2083 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
2084 Range [axis] Axis ifrs-full:RangeAxis
2085 Ranges [member] Member ifrs-full:RangesMember
2086 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2087 Top of range [member] Member ifrs-full:TopOfRangeMember
2088 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
2089 Finance lease term Concept (xbrli:durationItemType) For Period znh:FinanceLeaseObligationTerms
2090 Carrying amount of aircraft secured finance lease obligations Concept (Monetary) As Of Debit ifrs-full:RecognisedFinanceLeaseAsAssets
2091 Secured finance lease obligation Concept (Monetary) As Of Credit znh:SecuredFinanceLeaseObligations
2092 1205 - Disclosure - Obligations under Finance Leases - Future Payments under Finance Leases (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureObligationsUnderFinanceLeasesFuturePaymentsUnderFinanceLeases
2093 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
2094 Maturity [axis] Axis ifrs-full:MaturityAxis
2095 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2096 Within 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
2097 After 1 year but within 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
2098 After 2 years but within 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
2099 After 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
2100 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
2101 Present value of the minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
2102 Total minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
2103 Interest Concept (Monetary) As Of Credit ifrs-full:FutureFinanceChargeOnFinanceLease
2104 Current finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
2105 Noncurrent finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
2106 1206 - Disclosure - Obligations under Finance Leases - Details of Obligations under Finance Leases (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureObligationsUnderFinanceLeasesDetailsOfObligationsUnderFinanceLeases
2107 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
2108 Currency [Axis] Axis srt:CurrencyAxis
2109 All Currencies [Domain] Member currency:AllCurrenciesDomain
2110 USD [member] Member currency:USD
2111 Singapore Dollars [member] Member currency:SGD
2112 JPY [member] Member currency:JPY
2113 RMB [member] Member currency:CNY
2114 EURO [member] Member currency:EUR
2115 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
2116 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
2117 Fixed interest rates ranging from 1.75% to 5.03% per annum as at December 31, 2018 [Member] Member znh:FixedInterestRateRangingOnePointSevenFivePercentageToFivePointZeroThreePercentageInterestRateMember
2118 Floating interest rates ranging from three-month LIBOR + 0.18% to three-month LIBOR + 2.95% per annum as at December 31, 2018 [Member] Member znh:FloatingInterestRateRangingThreeMonthLiborPlusZeroPointOneEightToThreeMonthLiborTwoPointNineFivePercentageMember
2119 Floating interest rates ranging from six-month LIBOR + 0.03% to six-month LIBOR + 3.30% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateRangingSixMonthLiborPlusZeroPointZeroThreeToSixMonthLiborThreePointThreeZeroPercentageMember
2120 Floating interest rate at six-month SIBOR + 1.44% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAtSixMonthSiborMember
2121 Floating interest rate at three-month TIBOR + 0.75% to three-month TIBOR + 1.90% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAtThreeMonthTiborMember
2122 Floating interest rate at six-month TIBOR + 3.00% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAtSixMonthTiborMember
2123 Fixed rate at 4.1% to 4.3% as at December 31, 2018 [member] Member znh:FixedRateOneMember
2124 Floating interest rate ranging from 75.0% to 106.5% of five-year RMB loan benchmark interest rate announced by the PBOC [member] Member znh:FloatingInterestRateRangingFromSeventyFivePointZeroPercentageToOneHundredSixPointFivePercentageOfFiveYearRmbLoanBenchmarkInterestRateAnnouncedByPbocMember
2125 Floating interest rate at three-month CHN HIBOR 0.38% as at December 31, 2018 [member] Member znh:FloatingInterestRateAtThreeMonthCHNHIBORMember
2126 Floating interest rate ranging from three-month EURIBOR + 0.32% to three-month EURIBOR + 2.20% per annum as at 31 December 2018 [member] Member znh:FloatingInterestRateAboveThreeMonthEuriborMember
2127 Floating interest rate ranging from six-month EURIBOR + 1.45% to six-month EURIBOR + 1.80% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAboveSixMonthEuriborMember
2128 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
2129 Finance lease liabilities Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
2130 1207 - Disclosure - Obligations under Finance Leases - Details of Obligations under Finance Leases (Parenthetical) (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureObligationsUnderFinanceLeasesDetailsOfObligationsUnderFinanceLeasesParenthetical
2131 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
2132 Currency [Axis] Axis srt:CurrencyAxis
2133 All Currencies [Domain] Member currency:AllCurrenciesDomain
2134 USD [member] Member currency:USD
2135 Singapore Dollars [member] Member currency:SGD
2136 JPY [member] Member currency:JPY
2137 RMB [member] Member currency:CNY
2138 EURO [member] Member currency:EUR
2139 Range [axis] Axis ifrs-full:RangeAxis
2140 Ranges [member] Member ifrs-full:RangesMember
2141 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2142 Top of range [member] Member ifrs-full:TopOfRangeMember
2143 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
2144 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
2145 Fixed interest rates ranging from 1.75% to 5.03% per annum as at December 31, 2018 [Member] Member znh:FixedInterestRateRangingOnePointSevenFivePercentageToFivePointZeroThreePercentageInterestRateMember
2146 Floating interest rates ranging from three-month LIBOR + 0.18% to three-month LIBOR + 2.95% per annum as at December 31, 2018 [Member] Member znh:FloatingInterestRateRangingThreeMonthLiborPlusZeroPointOneEightToThreeMonthLiborTwoPointNineFivePercentageMember
2147 Floating interest rates ranging from six-month LIBOR + 0.03% to six-month LIBOR + 3.30% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateRangingSixMonthLiborPlusZeroPointZeroThreeToSixMonthLiborThreePointThreeZeroPercentageMember
2148 Floating interest rate at six-month SIBOR + 1.44% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAtSixMonthSiborMember
2149 Floating interest rate at three-month TIBOR + 0.75% to three-month TIBOR + 1.90% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAtThreeMonthTiborMember
2150 Floating interest rate at six-month TIBOR + 3.00% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAtSixMonthTiborMember
2151 Fixed rate at 4.1% to 4.3% as at December 31, 2018 [member] Member znh:FixedRateOneMember
2152 Floating interest rate ranging from 75.0% to 106.5% of five-year RMB loan benchmark interest rate announced by the PBOC [member] Member znh:FloatingInterestRateRangingFromSeventyFivePointZeroPercentageToOneHundredSixPointFivePercentageOfFiveYearRmbLoanBenchmarkInterestRateAnnouncedByPbocMember
2153 Floating interest rate at three-month CHN HIBOR 0.38% as at December 31, 2018 [member] Member znh:FloatingInterestRateAtThreeMonthCHNHIBORMember
2154 Floating interest rate ranging from three-month EURIBOR + 0.32% to three-month EURIBOR + 2.20% per annum as at 31 December 2018 [member] Member znh:FloatingInterestRateAboveThreeMonthEuriborMember
2155 Floating interest rate ranging from six-month EURIBOR + 1.45% to six-month EURIBOR + 1.80% per annum as at December 31, 2018 [member] Member znh:FloatingInterestRateAboveSixMonthEuriborMember
2156 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
2157 Finance lease interest rate Concept (Percent) For Period znh:FinanceLeaseInterestRate
2158 Percentage of benchmark interest rate Concept (Percent) As Of znh:PercentageOfBenchmarkLendingRate
2159 Finance lease interest rate basis Concept (Text/String) For Period znh:FinanceLeaseInterestRateBasis
2160 Finance lease interest rate basis adjustment Concept (Percent) For Period znh:FinanceLeaseAdjustmentToInterestRateBasis
2161 1208 - Disclosure - Trade Payables - Ageing Analysis of Trade Payables Based on Transaction Date (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureTradePayablesAgeingAnalysisOfTradePayablesBasedOnTransactionDate
2162 Disclosure of financial liabilities [table] Table

*

*

ifrs-full:DisclosureOfFinancialLiabilitiesTable
2163 Maturity [axis] Axis ifrs-full:MaturityAxis
2164 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2165 Within 1 month [member] Member ifrs-full:NotLaterThanOneMonthMember
2166 More than 1 month but less than 3 months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
2167 More than 3 months but less than 6 months [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
2168 More than 6 months but less than 1 year [member] Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
2169 More than 1 year [member] Member ifrs-full:LaterThanOneYearMember
2170 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
2171 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
2172 1209 - Disclosure - Trade Payables - Trade Payables by Currencies (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureTradePayablesTradePayablesByCurrencies
2173 Disclosure of financial liabilities [table] Table

*

*

ifrs-full:DisclosureOfFinancialLiabilitiesTable
2174 Currency [Axis] Axis srt:CurrencyAxis
2175 All Currencies [Domain] Member currency:AllCurrenciesDomain
2176 RMB [member] Member currency:CNY
2177 USD [member] Member currency:USD
2178 Others [member] Member znh:OtherCurrencyMember
2179 Disclosure of financial liabilities [line items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
2180 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
2181 1210 - Disclosure - Contract Liabilities / Deferred Revenue - Summary of Contract Liabilities and Deferred Revenue (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureContractLiabilitiesDeferredRevenueSummaryOfContractLiabilitiesAndDeferredRevenue
2182 Disclosure of contract liabilities and deferred income [table] Table

*

*

znh:DisclosureOfContractLiabilitiesAndDeferredIncomeTable
2183 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
2184 Currently stated [member] Member ifrs-full:RestatedMember
2185 Difference: Estimated impact of adoption of IFRS 15 on 2018 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
2186 Unadjusted Balance [member] Member znh:UnadjustedBalanceMember
2187 Disclosure of contract liabilities and deferred revenue [line items] LineItems znh:DisclosureOfContractLiabilitiesAndDeferredRevenueLineItems
2188 Deferred revenue, Beginning balance Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
2189 -Current Concept (Monetary) As Of Credit znh:DeferredRevenueCurrent1
2190 -Non-current Concept (Monetary) As Of Credit znh:DeferredRevenueNonCurrent1
2191 Deferred revenue, Ending balance Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
2192 - Change in measurement of revenue under frequent flyer award programmes Concept (Monetary) For Period Credit znh:ChangeInFrequentFlyerDeferredRevenue
2193 -Change in presentation Concept (Monetary) For Period ifrs-full:AmountOfReclassificationsOrChangesInPresentation
2194 Contract liabilities, Beginning balance Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
2195 Addition as a result of increase of the unredeemed credits under the frequent flyer award programmes Concept (Monetary) For Period Credit znh:IncreaseDecreaseInContractLiabilityDueToIncreaseOfUnredeemedCredits
2196 Reduction as a result of revenue recognised during the year Concept (Monetary) For Period Credit znh:IncreaseDecreaseInContractLiabilityRevenueRecognized
2197 -Recognised as revenue from opening balance of contract liabilities Concept (Monetary) For Period Credit ifrs-full:RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod
2198 -Recognised as revenue from current year addition of contract liabilities Concept (Monetary) For Period Credit znh:RevenueRecognizedRelatedToContractLiabilities
2199 Contract liabilities, Ending balance Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
2200 -Current Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
2201 -Non-current Concept (Monetary) As Of Credit ifrs-full:NoncurrentContractLiabilities
2202 1211 - Disclosure - Contract Liabilities / Deferred Revenue - Additional Information (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureContractLiabilitiesDeferredRevenueAdditionalInformation
2203 Implied Table Table

*

*

implied:Table
2204 Disclosure of contract liabilities and deferred income [abstract] Abstract znh:DisclosureOfContractLiabilitiesAndDeferredIncomeAbstract
2205 Aggregated amount of the transaction price allocated to the remaining performance obligation Concept (Monetary) As Of Credit ifrs-full:TransactionPriceAllocatedToRemainingPerformanceObligations
2206 1212 - Disclosure - Sales in Advance of Carriage - Additional Information (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureSalesInAdvanceOfCarriageAdditionalInformation
2207 Implied Table Table

*

*

implied:Table
2208 Disclosure of sales in advance of carriage [abstract] Abstract znh:DisclosureOfSalesInAdvanceOfCarriageAbstract
2209 Revenue recognised as sales in advance of carriage Concept (Monetary) For Period Credit znh:RevenueRecognisedAsSalesInAdvanceOfCarriage
2210 1213 - Disclosure - Other Non-current Liabilities - Summary of Other Non-current Liabilities (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureOtherNoncurrentLiabilitiesSummaryOfOtherNoncurrentLiabilities
2211 Implied Table Table

*

*

implied:Table
2212 Disclosure of other non-current liabilities [abstract] Abstract znh:DisclosureOfOtherNonCurrentLiabilitiesAbstract
2213 Unredeemed credits under the frequent flyer award programmes Concept (Monetary) As Of Credit znh:UnredeemedCreditsNoncurrent
2214 Others Concept (Monetary) As Of Credit znh:MiscellaneousOtherNoncurrentLiabilities
2215 Other non-current liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
2216 1214 - Disclosure - Balances with Related Companies - Summary of Amounts Due from/to Related Companies (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureBalancesWithRelatedCompaniesSummaryOfAmountsDueFromtoRelatedCompanies
2217 Disclosure of transactions between related parties [table] Table

*

*

ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2218 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2219 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2220 CSAH and its affiliates [member] Member znh:CSAHAndItsAffiliatesMember
2221 Associates [member] Member ifrs-full:AssociatesMember
2222 Joint ventures [member] Member ifrs-full:JointVenturesMember
2223 Other related companies [member] Member ifrs-full:OtherRelatedPartiesMember
2224 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2225 Current Abstract ifrs-full:TradeAndOtherCurrentReceivablesAbstract
2226 Amounts due from related companies, current Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
2227 Amounts due to related companies Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
2228 Amounts paid to related companies Concept (Monetary) As Of Debit ifrs-full:NoncurrentReceivablesDueFromRelatedParties
2229 Current Abstract ifrs-full:TradeAndOtherCurrentReceivablesAbstract
2230 Amounts due from related companies, current Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivablesDueFromRelatedParties
2231 Amounts due to related companies Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
2232 1215 - Disclosure - Accrued Expenses - Summary of Accrued Expenses (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureAccruedExpensesSummaryOfAccruedExpenses
2233 Implied Table Table

*

*

implied:Table
2234 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
2235 Repairs and maintenance Concept (Monetary) As Of Credit znh:RepairsAndMaintenanceAccrued
2236 Jet fuel costs Concept (Monetary) As Of Credit znh:JetFuelCostsAccrued
2237 Salaries and welfare Concept (Monetary) As Of Credit ifrs-full:ShorttermEmployeeBenefitsAccruals
2238 Landing and navigation fees Concept (Monetary) As Of Credit znh:LandingAndNavigationFeesAccrued
2239 Computer reservation services Concept (Monetary) As Of Credit znh:ComputerReservationServicesAccrued
2240 Provision for major overhauls (Note 45) Concept (Monetary) As Of Credit znh:CurrentPortionOfProvisionForMajorOverhauls
2241 Interest expenses Concept (Monetary) As Of Credit ifrs-full:CurrentInterestPayable
2242 Air catering expenses Concept (Monetary) As Of Credit znh:AirCateringExpensesAccrued
2243 Provision for early retirement benefits Concept (Monetary) As Of Credit znh:CurrentPortionOfProvisionForEarlyRetirementBenefits
2244 Others Concept (Monetary) As Of Credit znh:OtherAccruedExpenses
2245 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsCurrent
2246 1216 - Disclosure - Other Liabilities - Summary of Other Liabilities (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureOtherLiabilitiesSummaryOfOtherLiabilities
2247 Implied Table Table

*

*

implied:Table
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2250 Payable for purchase of property, plant and equipment Concept (Monetary) As Of Credit ifrs-full:CurrentPayablesForPurchaseOfNoncurrentAssets
2251 Sales agent deposits Concept (Monetary) As Of Credit znh:SalesAgentDeposits
2252 Other taxes payable Concept (Monetary) As Of Credit znh:OtherTaxesPayable
2253 Deposit received for chartered flights Concept (Monetary) As Of Credit ifrs-full:CurrentDepositsFromCustomers
2254 Others Concept (Monetary) As Of Credit znh:OtherMiscellaneousCurrentLiabilities
2255 Total Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
2256 1217 - Disclosure - Provision for Major Overhauls - Details of Provision for Major Overhauls in Respect of Aircraft Held under Operating Leases (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureProvisionForMajorOverhaulsDetailsOfProvisionForMajorOverhaulsInRespectOfAircraftHeldUnderOperatingLeases
2257 Implied Table Table

*

*

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2261 Utilization Concept (Monetary) For Period Credit znh:UtilizationOfProvisionForMajorOverhauls
2262 Ending balance Concept (Monetary) As Of Credit znh:ProvisionForMajorOverhauls
2263 Less: current portion Concept (Monetary) As Of Credit znh:CurrentPortionOfProvisionForMajorOverhauls
2264 Total Concept (Monetary) As Of Credit znh:NoncurrentPortionOfProvisionForMajorOverhauls
2265 1218 - Disclosure - Provision for Early Retirement Benefits - Details of Provision for Early Retirement Benefits in Respect of Obligations to Early Retired Employees (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureProvisionForEarlyRetirementBenefitsDetailsOfProvisionForEarlyRetirementBenefitsInRespectOfObligationsToEarlyRetiredEmployees
2266 Implied Table Table

*

*

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2267 Provisions [abstract] Abstract ifrs-full:ProvisionsAbstract
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2269 Provision for the year (Note 13) Concept (Monetary) For Period Credit znh:ProvisionForEmployeeBenefit
2270 Financial cost (Note 15) Concept (Monetary) For Period Debit znh:InterestRelatingToProvisionForEarlyRetirementBenefits
2271 Payments made during the year Concept (Monetary) For Period Debit znh:PaymentsOnProvisionsForEmployeeBenefit
2272 Ending balance Concept (Monetary) As Of Credit znh:ProvisionForEarlyRetirementBenefits
2273 Less: current portion (Note 43) Concept (Monetary) As Of Credit znh:CurrentPortionOfProvisionForEarlyRetirementBenefits
2274 Total Concept (Monetary) As Of Credit znh:NoncurrentPortionOfProvisionForEarlyRetirementBenefits
2275 1219 - Disclosure - Deferred Benefits and Gains - Summary of Deferred Benefits and Gains (Detail) Network

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*

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2276 Implied Table Table

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*

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2279 Maintenance rebates Concept (Monetary) As Of Credit znh:NoncurrentMaintenanceRebates
2280 Gains relating to sale and leaseback (Note (iii)) Concept (Monetary) As Of Credit znh:DeferredGainsRelatingToSaleAndLeaseback
2281 Government grants Concept (Monetary) As Of Credit ifrs-full:NoncurrentGovernmentGrants
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2283 Deferred benefits and gains Concept (Monetary) As Of Credit znh:DeferredBenefitsAndGainsClassifiedAsNoncurrent
2284 1220 - Disclosure - Share Capital - Summary of Share Capital (Detail) Network

*

*

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2285 Disclosure of classes of share capital [table] Table

*

*

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2297 1221 - Disclosure - Share Capital - Summary of Share Capital (Parenthetical) (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureShareCapitalSummaryOfShareCapitalParenthetical
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*

*

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2319 Share issuance costs Concept (Monetary) For Period Debit ifrs-full:ShareIssueRelatedCost
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2321 1222 - Disclosure - Reserves - Summary of Reserves (Detail) Network

*

*

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*

*

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2344 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2345 Dividends approved in respect of the previous year Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears
2346 Appropriations to reserves Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferToStatutoryReserve
2347 Issuance of shares Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
2348 Dilution and change of non-controlling interests and other reserves Concept (Monetary) For Period Credit znh:DilutionAndChangeInNonControllingInterestsAndOtherReserves
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2351 1223 - Disclosure - Reserves - Additional Information (Detail) Network

*

*

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2355 Maximum reserve balance expressed as percentage of registered capital Concept (Percent) For Period znh:MaximumReserveBalanceExpressedAsPercentageOfRegisteredCapital
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2357 Final dividend proposed after the end of the reporting year, per share Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
2358 Total dividend proposed by directors Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
2359 1224 - Disclosure - Reserves - Final Dividend Proposed after the End of Reporting Year Payable to Equity Shareholders of the Company (Detail) Network

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*

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2360 Implied Table Table

*

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2362 Final dividend proposed after the end of the reporting year of RMB0.05 per share (2017: RMB0.10 per share) (inclusive of applicable tax) Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
2363 1225 - Disclosure - Reserves - Final Dividend Proposed after the End of Reporting Year Payable to Equity Shareholders of the Company (Parenthetical) (Detail) Network

*

*

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2364 Implied Table Table

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2366 Final dividend proposed after the end of the reporting year, per share Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
2367 1226 - Disclosure - Commitments - Capital Commitments Outstanding not Provided for in Financial Statements (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureCommitmentsCapitalCommitmentsOutstandingNotProvidedForInFinancialStatements
2368 Disclosure of detailed information about capital commitment [table] Table

*

*

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2372 Acquisition interest in joint venture [member] Member znh:AcquisitionInterestInJointVentureMember
2373 Joint ventures [member] Member ifrs-full:JointVenturesMember
2374 Investments accounted for using equity method [member] Member ifrs-full:InvestmentsAccountedForUsingEquityMethodMember
2375 Other property, plant and equipment [member] Member ifrs-full:OtherPropertyPlantAndEquipmentMember
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2377 Authorised and contracted for Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
2378 Authorised but not contracted for Concept (Monetary) As Of Credit ifrs-full:AuthorisedCapitalCommitmentsButNotContractedFor
2379 Capital commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
2380 1227 - Disclosure - Commitments - Approximate Total Future Payments, Including Estimated Amounts for Price Escalation through Anticipated Delivery Dates for Aircraft and Flight Equipment (Detail) Network

*

*

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2381 Disclosure of detailed information about property, plant and equipment [table] Table

*

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2386 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2387 2018 [member] Member znh:YearOneMember
2388 2019 [member] Member znh:YearTwoMember
2389 2020 [member] Member znh:YearThreeMember
2390 2021 [member] Member znh:YearFourMember
2391 2022 and afterwards [member] Member znh:YearFiveAndThereAfterMember
2392 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
2393 Capital commitments Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
2394 1228 - Disclosure - Commitments - Total Future Minimum Lease Payments under Non-cancellable Operating Leases in Respect of Properties, Aircraft and Flight Equipment (Detail) Network

*

*

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2395 Disclosure of operating lease by lessee [table] Table

*

*

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2402 Future minimum lease payments payable under non-cancellable operating lease Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
2403 1229 - Disclosure - Material Related Party Transactions - Key Management Personnel Remuneration (Detail) Network

*

*

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2404 Disclosure Of Remuneration Of Key Management Personnel [table] Table

*

*

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2410 Salaries, wages and welfare Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
2411 Retirement scheme contributions Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
2412 Remuneration for key management personnel Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
2413 1230 - Disclosure - Material Related Party Transactions - Details of Significant Transactions with Related Parties (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureMaterialRelatedPartyTransactionsDetailsOfSignificantTransactionsWithRelatedParties
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2423 Aviation material sales income [member] Member znh:AviationMaterialSalesIncomeMember
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2429 Maintenance material purchase expense and lease charges for maintenance material [member] Member znh:MaintenanceMaterialPurchaseExpenseAndLeaseChargesForMaintenanceMaterialMember
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2466 1231 - Disclosure - Material Related Party Transactions - Additional Information (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureMaterialRelatedPartyTransactionsAdditionalInformation
2467 Disclosure of transactions between related parties [table] Table

*

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2482 Proportion of ownership interest in subsidiary Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
2483 Shares issued cash consideration amount Concept (Monetary) For Period Credit znh:StockIssuedDuringPeriodValueNewIssues1
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2491 1232 - Disclosure - Material Related Party Transactions - Details of Significant Transactions with Related Parties (Parenthetical) (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureMaterialRelatedPartyTransactionsDetailsOfSignificantTransactionsWithRelatedPartiesParenthetical
2492 Implied Table Table

*

*

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2493 Disclosure of transactions between related parties [abstract] Abstract ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesAbstract
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2495 Cash consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred
2496 1233 - Disclosure - Material Related Party Transactions - Details of Balances with Related Parties (Detail) Network

*

*

http://www.csair.com/taxonomy/role/DisclosureMaterialRelatedPartyTransactionsDetailsOfBalancesWithRelatedParties
2497 Disclosure of transactions between related parties [table] Table

*

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2500 CSAH and its affiliates [member] Member ifrs-full:ParentMember
2501 Associates [member] Member ifrs-full:AssociatesMember
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2508 Payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
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2510 1234 - Disclosure - Material Related Party Transactions - Loans from and Deposits Placed with Southern Airlines Group Finance Co., Ltd (Detail) Network

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*

http://www.csair.com/taxonomy/role/DisclosureMaterialRelatedPartyTransactionsLoansFromAndDepositsPlacedWithSouthernAirlinesGroupFinanceCoLtd
2511 Disclosure of transactions between related parties [table] Table

*

*

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2517 Entity [Domain] Member dei:EntityDomain
2518 CSAH [member] Member znh:CsahMember
2519 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
2520 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
2521 Unsecured loans [Member] Member znh:UnsecuredLoansMember
2522 Maturity [axis] Axis ifrs-full:MaturityAxis
2523 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2524 Within 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
2525 After 1 year but within 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
2526 After 2 years but within 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
2527 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2528 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
2529 Deposits placed with SA Finance Concept (Monetary) As Of Debit ifrs-full:Cash
2530 1235 - Disclosure - Employee Benefits Plan - Additional Information (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureEmployeeBenefitsPlanAdditionalInformation
2531 Classes Of Employee Benefits Expense [table] Table

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znh:ClassesOfEmployeeBenefitsExpenseTable
2532 Range [axis] Axis ifrs-full:RangeAxis
2533 Ranges [member] Member ifrs-full:RangesMember
2534 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2535 Top of range [member] Member ifrs-full:TopOfRangeMember
2536 Classes of Employee Benefits Expense [Line Items] LineItems znh:ClassesOfEmployeeBenefitsExpenseLineItems
2537 Percentage of salary costs contributed to defined contribution retirement schemes Concept (Percent) For Period znh:DefinedContributionPlansEmployerContributionPercentage
2538 Total contribution into the Pension Scheme Concept (Monetary) For Period Debit znh:ContributionsToDefinedContributionPlan
2539 1236 - Disclosure - Supplementary Information to the Consolidated Cash Flow Statements - Additional Information (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureSupplementaryInformationToTheConsolidatedCashFlowStatementsAdditionalInformation
2540 Condensed Cash Flow Statement [Table] Table

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srt:CondensedCashFlowStatementTable
2541 Classes of entity's own equity instruments [axis] Axis ifrs-full:ClassesOfEntitysOwnEquityInstrumentsAxis
2542 Entity's own equity instruments [member] Member ifrs-full:EntitysOwnEquityInstrumentsMember
2543 Equity transaction of MTU [member] Member znh:MTUMember
2544 Condensed Cash Flow Statements, Captions [Line Items] LineItems srt:CondensedCashFlowStatementsCaptionsLineItems
2545 Non-cash transactions - acquisition of aircraft under finance leases Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
2546 Total equity interest Concept (Percent) For Period znh:PercentageOfEquityInterest
2547 Non - cash equity transaction of financing activities Concept (Monetary) For Period Debit znh:EquityTransactionForNoncashItemsOfFinancingActivities
2548 1237 - Disclosure - Contingent Liabilities - Additional Information (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureContingentLiabilitiesAdditionalInformation
2549 Disclosure of contingent liabilities [table] Table

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ifrs-full:DisclosureOfContingentLiabilitiesTable
2550 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2551 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2552 Pilot trainees [member] Member znh:PilotsMember
2553 Disclosure of contingent liabilities [line items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2554 Guarantees provided on personal bank loans Concept (Monetary) For Period znh:GuaranteesProvidedOnPersonalBankLoans
2555 Personal bank loans drawn under guarantees Concept (Monetary) As Of Credit znh:PersonalBankLoansDrawnUnderGuarantees
2556 Amount paid to banks due to default of payments Concept (Monetary) For Period Credit znh:AmountPaidToBanksDueToDefaultOfPayments
2557 Loss claimed Concept (Monetary) As Of Debit znh:LossContingencyEstimateOfPossibleLoss1
2558 Provision for pending claim Concept (Monetary) As Of Credit znh:ProvisionForContingentClaims
2559 1238 - Disclosure - Directors' and Supervisors' Emoluments - Remuneration of Every Director and Supervisor (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosureDirectorsAndSupervisorsEmolumentsRemunerationOfEveryDirectorAndSupervisor
2560 Disclosure of transactions between related parties [table] Table

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ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2561 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2562 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
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2564 Yuan Xin An [member] Member znh:NonExecutiveDirectorTwoMember
2565 Yang Li Hua [member] Member znh:NonExecutiveDirectorThreeMember
2566 Tan Wan Geng [member] Member znh:ExecutiveDirectorOneMember
2567 Zhang Zi Fang [member] Member znh:ExecutiveDirectorTwoMember
2568 Li Shao Bin [member] Member znh:ExecutiveDirectorThreeMember
2569 Pan Fu [member] Member znh:SupervisorOneMember
2570 Li Jia Shi [member] Member znh:SupervisorTwoMember
2571 Zhang Wei [member] Member znh:SupervisorThreeMember
2572 Yang Yi Hua [member] Member znh:SupervisorFourMember
2573 Wu De Ming [member] Member znh:SupervisorFiveMember
2574 Ning Xiang Dong [member] Member znh:IndependentNonExecutiveDirectorOneMember
2575 Liu Chang Le [member] Member znh:IndependentNonExecutiveDirectorTwoMember
2576 Tan Jin Song [member] Member znh:IndependentNonExecutiveDirectorThreeMember
2577 Guo Wei [member] Member znh:IndependentNonExecutiveDirectorFourMember
2578 Jiao Shu Ge [member] Member znh:IndependentNonExecutiveDirectorFiveMember
2579 Wang Chang Shun [member] Member znh:ExecutiveDirectorFourMember
2580 Mao Juan [member] Member znh:SupervisorSixMember
2581 Zheng Fan [member] Member znh:IndependentNonExecutiveDirectorSevenMember
2582 Gu Hui Zhong [member] Member znh:IndependentNonExecutiveDirectorEightMember
2583 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2584 Directors' fees Concept (Monetary) For Period Debit ifrs-full:DirectorsRemunerationExpense
2585 Salaries, wages and welfare Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
2586 Housing allowance Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationOtherLongtermBenefits
2587 Employer's contribution to a retirement benefit scheme Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
2588 Remunerations paid or receivable in respect of accepting office as director or supervisor Concept (Monetary) For Period Debit znh:KeyManagementPersonnelCompensationRemunerationForEachSession
2589 Emoluments paid or receivable in respect of director's or supervisor's other services in connection with the management of the affairs of the Company or its subsidiary undertaking Concept (Monetary) For Period Debit znh:KeyManagementPersonnelCompensationOtherEmoluments
2590 Total Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
2591 1239 - Disclosure - Possible Impact of Amendments, New Standards and Interpretations Issued but Not Yet Effective for the Year Ended December 31, 2017 - Summary of New Standards or Interpretations Not Yet Adopted (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosurePossibleImpactOfAmendmentsNewStandardsAndInterpretationsIssuedButNotYetEffectiveForTheYearEndedDecember312017SummaryOfNewStandardsOrInterpretationsNotYetAdopted
2592 Disclosure of expected impact of initial application of new standards or interpretations [table] Table

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ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsTable
2593 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
2594 New IFRSs [member] Member ifrs-full:NewIFRSsMember
2595 IFRS 16 leases [member] Member znh:IFRS16LeasesMember
2596 IFRIC 23 Uncertainty over Income Tax Treatments [member] Member znh:Ifric23UncertaintyOverIncomeTaxTreatmentsMember
2597 Annual Improvements To IFRSs 2015-2017 Cycle [member] Member znh:AnnualImprovementsToIfrss20152017CycleMember
2598 Amendments to IAS 28, Long-term interest in associates and joint ventures [member] Member znh:AmendmentsToIas28LongtermInterestInAssociatesAndJointVenturesMember
2599 Amendments to IFRS9, Prepayment features with negative compensation [member] Member znh:AmendmentsToIFRS9PrepaymentFeaturesWithNegativeCompensationMember
2600 Disclosure of expected impact of initial application of new standards or interpretations [line items] LineItems ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsLineItems
2601 Effective for accounting periods beginning on or after Concept (Date) For Period ifrs-full:DateAsAtWhichEntityPlansToApplyNewIFRSInitially
2602 1240 - Disclosure - Possible impact of amendments, new standards and interpretations issued but not yet effective for the year ended December 31, 2018 - Additional Information (Detail) Network

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http://www.csair.com/taxonomy/role/DisclosurePossibleImpactOfAmendmentsNewStandardsAndInterpretationsIssuedButNotYetEffectiveForTheYearEndedDecember312018AdditionalInformation
2603 Implied Table Table

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implied:Table
2604 Disclosure of Expected Impact of Initial Application of New Standards or Interpretations [abstract] Abstract znh:DisclosureOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsAbstract
2605 Right of use assets Concept (Monetary) As Of Debit znh:RightOfUseAsset
2606 Lease liabilities Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities

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