CHINA UNICOM (HONG KONG) 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://imetrix.edgar-online.com/taxonomy/role/DocumentandEntityInformation
2 Implied Table Table

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3 Document and entity information [abstract] Abstract chu:DocumentAndEntityInformationAbstract
4 Document Type Concept (Submission Type) For Period dei:DocumentType
5 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
6 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
7 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
8 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
9 Trading Symbol Concept (Text/String) For Period dei:TradingSymbol
10 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
11 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
12 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
13 Entity Well-known Seasoned Issuer Concept (Yes/No) For Period dei:EntityWellKnownSeasonedIssuer
14 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
15 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
16 Entity Shell Company Concept (Yes/No) For Period dei:EntityShellCompany
17 Entity Filer Category Concept (Filer Category) For Period dei:EntityFilerCategory
18 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
19 1003 - Statement - Consolidated Statements of Income Network

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 http://imetrix.edgar-online.com/taxonomy/role/StatementOfComprehensiveIncomeProfitOrLossByFunctionOfExpense-310000
20 Implied Table Table

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21 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
22 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
23 Interconnection charges Concept (Monetary) For Period Debit chu:InterconnectionCharges
24 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
25 Network, operation and support expenses Concept (Monetary) For Period Debit chu:NetworkOperationAndSupportExpenses
26 Employee benefit expenses Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
27 Costs of telecommunications products sold Concept (Monetary) For Period Debit ifrs-full:CostOfMerchandiseSold
28 Other operating expenses Concept (Monetary) For Period Debit chu:OtherExpenses1
29 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
30 Interest income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
31 Share of net profit of associates Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
32 Share of net profit of joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
33 Other income - net Concept (Monetary) For Period Credit chu:OtherIncomeNet
34 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
35 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
36 Net income for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
37 Attributable to: Abstract ifrs-full:ProfitLossAttributableToAbstract
38 Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
39 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToNoncontrollingInterests
40 Earnings per share for income attributable to equity shareholders of the Company during the year: Abstract ifrs-full:EarningsPerShareAbstract
41 Basic earnings per share Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
42 Diluted earnings per share Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
43 1004 - Statement - Consolidated Statements of Comprehensive Income Network

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 http://imetrix.edgar-online.com/taxonomy/role/StatementOfComprehensiveIncomeOCIComponentsPresentedNetOfTax-410000
44 Implied Table Table

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45 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
46 Net income for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
47 Other comprehensive income Abstract ifrs-full:OtherComprehensiveIncomeAbstract
48 Items that will not be reclassified to statements of income: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
49 Changes in fair value of financial assets through other comprehensive income (non-recycling) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
50 Tax effect on changes in fair value of financial assets through other comprehensive income Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
51 Changes in fair value of financial assets through other comprehensive income, net of tax (non-recycling) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
52 Remeasurement of net defined benefit liability, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
53 Items that will not be reclassified to statements of income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
54 Item that may be reclassified subsequently to statements of income: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
55 Currency translation differences Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
56 Other comprehensive income for the year, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
57 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
58 Total comprehensive income attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
59 Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
60 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
61 1005 - Statement - Consolidated Statements of Financial Position Network

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 http://imetrix.edgar-online.com/taxonomy/role/StatementOfFinancialPositionCurrentNonCurrent-210000
62 Statement [table] Table

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 chu:StatementTable
63 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
64 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
65 Ultimate holding company [member] Member chu:UltimateHoldingCompanyMember
66 Related parties [member] Member ifrs-full:RelatedPartiesMember
67 Domestic carriers [member] Member chu:DomesticCarriersMember
68 Statement [LineItems] LineItems chu:StatementLineItems
69 ASSETS Abstract ifrs-full:AssetsAbstract
70 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
71 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
72 Lease prepayments Concept (Monetary) As Of Debit ifrs-full:NoncurrentLeasePrepayments
73 Goodwill Concept (Monetary) As Of Debit ifrs-full:Goodwill
74 Interest in associates Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
75 Interest in joint ventures Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVentures
76 Deferred income tax assets Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
77 Contract assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentContractAssets
78 Contract costs Concept (Monetary) As Of Debit chu:ContractCostsNoncurrent
79 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
80 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
81 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
82 Current assets Abstract ifrs-full:CurrentAssetsAbstract
83 Inventories and consumables Concept (Monetary) As Of Debit ifrs-full:Inventories
84 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
85 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
86 Prepayments and other current assets Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
87 Financial assets at fair value through profit and loss Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss
88 Short-term bank deposits and restricted deposits Concept (Monetary) As Of Debit chu:ShorttermBankDepositsAndRestrictedDeposits
89 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
90 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
91 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
92 EQUITY Abstract ifrs-full:EquityAbstract
93 Share capital Concept (Monetary) As Of Credit chu:ShareCapital
94 Reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
95 Retained profits Abstract chu:RetainedProfitsAbstract
96 Proposed final dividend Concept (Monetary) As Of Credit chu:ProposedFinalDividend
97 Others Concept (Monetary) As Of Credit chu:OtherRetainedProfits
98 Equity attributable to equity shareholders of the Company Concept (Monetary) As Of Credit ifrs-full:EquityAttributableToOwnersOfParent
99 Non-controlling interests Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
100 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
101 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
102 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
103 Long-term bank loans Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentLoansReceived
104 Corporate bonds Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
105 Deferred income tax liabilities Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
106 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
107 Amounts due to related parties Concept (Monetary) As Of Credit ifrs-full:NoncurrentPayablesToRelatedParties
108 Other obligations Concept (Monetary) As Of Credit chu:OtherNonCurrentObligations
109 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
110 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
111 Short-term bank loans Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
112 Commercial papers Concept (Monetary) As Of Credit ifrs-full:CurrentCommercialPapersIssuedAndCurrentPortionOfNoncurrentCommercialPapersIssued
113 Current portion of long-term bank loans Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
114 Current portion of promissory notes Concept (Monetary) As Of Credit ifrs-full:CurrentNotesAndDebenturesIssuedAndCurrentPortionOfNoncurrentNotesAndDebenturesIssued
115 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
116 Taxes payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
117 Dividend payable Concept (Monetary) As Of Credit ifrs-full:CurrentDividendPayables
118 Current portion of corporate bonds Concept (Monetary) As Of Credit ifrs-full:CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued
119 Current portion of deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
120 Current portion of other obligations Concept (Monetary) As Of Credit chu:OtherCurrentObligations
121 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
122 Advances from customers Concept (Monetary) As Of Credit ifrs-full:CurrentAdvances
123 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
124 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
125 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
126 Net current liabilities Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
127 Total assets less current liabilities Concept (Monetary) As Of Debit ifrs-full:AssetsLessCurrentLiabilities
128 1006 - Statement - Consolidated Statements of Changes in Equity Network

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 http://imetrix.edgar-online.com/taxonomy/role/StatementOfChangesInEquity-610000
129 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
130 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
131 Equity [member] Member ifrs-full:EquityMember
132 Share capital [member] Member ifrs-full:IssuedCapitalMember
133 General risk reserve [member] Member chu:GeneralRiskReserveMember
134 Investment revaluation reserve [member] Member ifrs-full:RevaluationSurplusMember
135 Statutory reserve [member] Member ifrs-full:StatutoryReserveMember
136 Other reserves [member] Member ifrs-full:OtherReservesMember
137 Retained earnings [member] Member ifrs-full:RetainedEarningsMember
138 Equity attributable to owners of parent [member] Member ifrs-full:EquityAttributableToOwnersOfParentMember
139 Non-controlling interests [member] Member ifrs-full:NoncontrollingInterestsMember
140 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
141 Currently stated [member] Member ifrs-full:RestatedMember
142 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
143 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
144 Impact on initial application of IFRS 9 (2014) [member] Member chu:IncreaseDecreaseDueToApplicationOfIFRS9Member
145 Balance After IFRS Adjustments [member] Member chu:BalanceAfterIfrsAdjustmentsMember
146 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
147 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
148 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
149 Capital contribution from non-controlling interests Concept (Monetary) For Period Credit chu:CapitalContributionFromNoncontrollingInterests
150 Issue of share capital Concept (Monetary) For Period Credit ifrs-full:IssueOfEquity
151 Share of associate's other reserve Concept (Monetary) For Period Credit chu:ShareOfAssociateOtherReserve
152 Appropriation to statutory reserves Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTransferToStatutoryReserve
153 Appropriation to other reserve Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
154 Dividends relating to 2015 and 2017(Note 32) Concept (Monetary) For Period Debit ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears
155 Capital contribution relating to share-based payment borne by China United Network Communications Limited ("A Share Company") (Note 43) Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughSharebasedPaymentTransactions
156 Balance Concept (Monetary) As Of Credit ifrs-full:Equity
157 1007 - Statement - Consolidated Statements of Cash Flows Network

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 http://imetrix.edgar-online.com/taxonomy/role/StatementOfCashFlowsDirectMethod-510000
158 Statement [table] Table

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 chu:StatementTable
159 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
160 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
161 China United Network Communications Group Company Limited and its subsidiaries [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedAndItsSubsidiariesMember
162 Statement [LineItems] LineItems chu:StatementLineItems
163 Cash flows from operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
164 Cash generated from operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
165 Interest received Concept (Monetary) For Period Debit ifrs-full:InterestReceivedClassifiedAsOperatingActivities
166 Interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsOperatingActivities
167 Income tax paid Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidClassifiedAsOperatingActivities
168 Net cash inflow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
169 Cash flows from investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
170 Purchase of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
171 Proceeds from disposal of Tower Assets and other property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
172 Dividend received from financial assets at fair value through other comprehensive income Concept (Monetary) For Period Debit chu:DividendsReceivedFromFairValueOfOtherComprehensiveIncomeClassifiedAsInvestingActivities
173 Investment income received from financial assets at fair value through profit and loss Concept (Monetary) For Period Debit chu:InvestmentIncomeReceivedFromFinancialAssetsAtFairValueOfProfitAndLoss
174 Proceeds from disposal of financial assets at fair value through profit and loss Concept (Monetary) For Period Debit chu:ProceedsFromDisposalOfFinancialAssetsAtFairValueOfProfitAndLoss
175 Dividends received from associates Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedFromAssociatesClassifiedAsInvestingActivities
176 Decrease /(Increase) in short-term bank deposits and restricted deposits Concept (Monetary) For Period Debit chu:CashFlowsFromUsedInDecreaseIncreaseInShorttermDepositsAndRestrictedDeposits
177 Purchase of other assets Concept (Monetary) For Period Credit chu:PurchaseOfOtherAssetsClassifiedAsInvestingActivities
178 Acquisition of financial assets at fair value through profit and loss Concept (Monetary) For Period Credit chu:PurchaseOfFinancialAssetsAtFairValueOfProfitAndLoss
179 Acquisition of financial assets at fair value through other comprehensive income Concept (Monetary) For Period Credit chu:PurchaseOfFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
180 Acquisition of interest in associates Concept (Monetary) For Period Credit ifrs-full:PurchaseOfInterestsInAssociates
181 Acquisition of interest in joint ventures Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities
182 Lending by Unicom Group Finance Company Limited ("Finance Company") Concept (Monetary) For Period Credit ifrs-full:CashAdvancesAndLoansMadeToRelatedParties
183 Repayment of loan lent by Finance Company Concept (Monetary) For Period Debit ifrs-full:CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToRelatedParties
184 Net cash outflow from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
185 Cash flows from financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
186 Proceeds from share issued Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssueOfOrdinaryShares
187 Capital contributions from non-controlling interests Concept (Monetary) For Period Debit ifrs-full:ProceedsFromContributionsOfNoncontrollingInterests
188 Proceeds from commercial papers Concept (Monetary) For Period Debit chu:ProceedsFromCommercialPapers
189 Proceeds from short-term bank loans Concept (Monetary) For Period Debit ifrs-full:ProceedsFromCurrentBorrowings
190 Proceeds from long-term bank loans Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
191 Loans from ultimate holding company Concept (Monetary) For Period Debit chu:ProceedsFromHoldingCompanyLoan
192 Loans from related parties Concept (Monetary) For Period Debit chu:ProceedsFromRelatedPartyLoan
193 Proceeds from corporate bonds Concept (Monetary) For Period Debit chu:ProceedsFromCorporateBonds
194 Repayment of commercial papers Concept (Monetary) For Period Credit chu:RepaymentOfCommercialPapers
195 Repayment of short-term bank loans Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfCurrentBorrowings
196 Repayment of long-term bank loans Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
197 Repayment of related party loan Concept (Monetary) For Period Credit chu:RepaymentOfRelatedPartyLoan
198 Repayment of ultimate holding company loan Concept (Monetary) For Period Credit chu:RepaymentOfHoldingCompanyLoan
199 Repayment of finance lease Concept (Monetary) For Period Credit ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
200 Repayment of promissory notes Concept (Monetary) For Period Credit chu:RepaymentOfPromissoryNotes
201 Repayment of corporate bonds Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfBondsNotesAndDebentures
202 Payment of issuing expense for promissory notes Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
203 Dividends paid to equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
204 Net deposits/(withdrawal) with/from Finance Company Concept (Monetary) For Period Debit chu:IncreaseDecreaseInDepositsReceived
205 Increase in statutory reserve deposits placed by Finance Company Concept (Monetary) For Period Credit chu:IncreaseDecreaseInStatutoryReserveDeposits
206 Net cash inflow/(outflow) from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
207 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
208 Cash and cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
209 Effect of changes in foreign exchange rate Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
210 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
211 Analysis of the balances of cash and cash equivalents: Abstract ifrs-full:CashAndCashEquivalentsAbstract
212 Cash balances Concept (Monetary) As Of Debit ifrs-full:CashOnHand
213 Bank balances Concept (Monetary) As Of Debit ifrs-full:BalancesWithBanks
214 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
215 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
216 Adjustments for: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
217 Depreciation and amortization Concept (Monetary) For Period Debit ifrs-full:DepreciationAndAmortisationExpense
218 Interest income Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForInterestIncome
219 Finance costs Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFinanceCosts
220 Loss on disposal of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets
221 Credit loss allowance and write-down of inventories Concept (Monetary) For Period Debit chu:AdjustmentsForCreditLossAllowanceAndWritedownOfInventories
222 Dividend from financial assets at fair value through other comprehensive income Concept (Monetary) For Period Credit chu:AdjustmentsForDividendFromFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
223 Investment income from financial assets at fair value through profit and loss Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForDividendIncome
224 Share of net profit of associates Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
225 Share of net profit of joint ventures Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
226 Expenses for restricted shares of A Share Company granted to the Group's employees Concept (Monetary) For Period Debit chu:ExpensesForRestrictedSharesGrantedToEmployees
227 Other investment gain Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFairValueGainsLosses
228 Changes in working capital: Abstract chu:ChangesInWorkingCapitalAbstract
229 Increase in accounts receivable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
230 Decrease in contract assets Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInContractAssets
231 Increase in contract costs Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInContractCosts
232 Decrease/(Increase) in inventories and consumables Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
233 Decrease / (Increase) in short-term bank deposits and restricted deposits Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDepositsFromBanks
234 (Increase) / Decrease in other assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
235 Decrease in prepayments and other current assets Concept (Monetary) For Period Debit chu:AdjustmentsForDecreaseIncreaseInPrepaymentsAndOtherCurrentAssets
236 Increase in amounts due from ultimate holding company Concept (Monetary) For Period Credit chu:AdjustmentsForIncreaseInAmountsDueFromUltimateHoldingCompany
237 (Increase) / Decrease in amounts due from related parties Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseDueFromRelatedParties
238 (Increase) / Decrease in amounts due from domestic carriers Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseDueFromDomesticCarriers
239 (Decrease) / Increase in accounts payable and accrued liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
240 (Decrease) / Increase in taxes payable Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInTaxesPayable
241 (Decrease) / Increase in advances from customers Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInAdvancesReceived
242 Decrease in contract liabilities Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInContractLiabilities
243 Increase in deferred revenue Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
244 Increase in other obligations Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInOtherLiabilities
245 Increase /(Decrease) in amounts due to ultimate holding company Concept (Monetary) For Period Debit chu:AdjustmentsForDecreaseIncreaseDueToHoldingCompany
246 Increase/(Decrease) in amounts due to related parties Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseDueToRelatedParties
247 Increase/(Decrease) in amounts due to domestic carriers Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseDueToDomesticCarriers
248 Cash generated from operations Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperations
249 1008 - Disclosure - Organization and Principal Activities Network

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253 1009 - Disclosure - Summary of Significant Accounting Policies Network

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257 1010 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments Network

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269 1013 - Disclosure - Revenue Network

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272 Revenue Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRevenueExplanatory
273 1014 - Disclosure - Network, Operation and Support Expenses Network

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277 1015 - Disclosure - Employee Benefit Expenses Network

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278 Implied Table Table

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281 1016 - Disclosure - Costs of Telecommunications Products Sold Network

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282 Implied Table Table

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283 Text block [abstract] Abstract chu:TextBlockAbstract
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285 1017 - Disclosure - Other Operating Expenses Network

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286 Implied Table Table

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287 Text block [abstract] Abstract chu:TextBlockAbstract
288 Other Operating Expenses Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory
289 1018 - Disclosure - Finance Costs Network

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290 Implied Table Table

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293 1019 - Disclosure - Other Income - Net Network

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294 Implied Table Table

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297 1020 - Disclosure - Taxation Network

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298 Implied Table Table

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301 1021 - Disclosure - Earnings Per Share Network

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302 Implied Table Table

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304 Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEarningsPerShareExplanatory
305 1022 - Disclosure - Property, Plant and Equipment Network

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308 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
309 1023 - Disclosure - Lease Prepayments Network

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310 Implied Table Table

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312 Lease Prepayments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfLeasePrepaymentsExplanatory
313 1024 - Disclosure - Goodwill Network

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316 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoodwillExplanatory
317 1025 - Disclosure - Investments in Subsidiaries Network

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318 Implied Table Table

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320 Investments in Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
321 1026 - Disclosure - Interest in Associates Network

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322 Implied Table Table

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324 Interest in Associates Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
325 1027 - Disclosure - Interest in Joint Ventures Network

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326 Implied Table Table

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328 Interest in Joint Ventures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfJointVenturesExplanatory
329 1028 - Disclosure - Contract Assets and Contract Liabilities Network

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332 Contract Assets and Contract Liabilities Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfSignificantChangesInContractAssetsAndContractLiabilitiesExplanatory
333 1029 - Disclosure - Contract Costs Network

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334 Implied Table Table

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335 Text block [abstract] Abstract chu:TextBlockAbstract
336 Contract Costs Concept (Text Block (HTML)) For Period chu:DisclosureOfContractCostsExplanatory
337 1030 - Disclosure - Financial Assets at Fair Value through Other Comprehensive Income Network

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340 Financial Assets at Fair Value through Other Comprehensive Income Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfEachInvestmentInEquityInstrumentsDesignatedAsMeasuredAtFairValueThroughOtherComprehensiveIncomeExplanatory
341 1031 - Disclosure - Other Assets Network

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342 Implied Table Table

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344 Other Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory
345 1032 - Disclosure - Inventories and Consumables Network

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346 Implied Table Table

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348 Inventories and Consumables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
349 1033 - Disclosure - Accounts Receivable Network

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350 Implied Table Table

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351 Text block [abstract] Abstract chu:TextBlockAbstract
352 Accounts Receivable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
353 1034 - Disclosure - Prepayments and Other Current Assets Network

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356 Prepayments and Other Current Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPrepaymentsAndOtherAssetsExplanatory
357 1035 - Disclosure - Short-term Bank Deposits and Restricted Deposits Network

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360 Short-term Bank Deposits and Restricted Deposits Concept (Text Block (HTML)) For Period chu:DisclosureOfShortTermBankDepositsAndRestrictedDepositsExplanatory
361 1036 - Disclosure - Cash And Cash Equivalents And Other Cash Flow Information Network

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364 Cash And Cash Equivalents And Other Cash Flow Information Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
365 1037 - Disclosure - Share Capital Network

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366 Implied Table Table

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368 Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIssuedCapitalExplanatory
369 1038 - Disclosure - Reserves Network

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372 Reserves Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
373 1039 - Disclosure - Dividends Network

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377 1040 - Disclosure - Long-Term Bank Loans Network

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381 1041 - Disclosure - Promissory Notes Network

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384 Promissory Notes Concept (Text Block (HTML)) For Period chu:DisclosureOfPromissoryNotesExplanatory
385 1042 - Disclosure - Corporate Bonds Network

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388 Corporate Bonds Concept (Text Block (HTML)) For Period chu:DisclosureOfCorporateBondsBorrowingsExplanatory
389 1043 - Disclosure - Deferred Revenue Network

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392 Deferred Revenue Concept (Text Block (HTML)) For Period chu:DeferredRevenueDisclosureTextBlock
393 1044 - Disclosure - Other Obligations Network

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394 Implied Table Table

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396 Other Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
397 1045 - Disclosure - Short-Term Bank Loans Network

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401 1046 - Disclosure - Commercial Papers Network

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402 Implied Table Table

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404 Commercial Papers Concept (Text Block (HTML)) For Period chu:DisclosureOfCommercialPapersExplanatory
405 1047 - Disclosure - Accounts Payable and Accrued Liabilities Network

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408 Accounts Payable and Accrued Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
409 1048 - Disclosure - Mutual Investment of The Company and Telefonica In Each Other Network

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410 Implied Table Table

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412 Mutual Investment of The Company and Telefonica In Each Other Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory
413 1049 - Disclosure - Equity-Settled Share Option Schemes Network

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416 Equity-Settled Share Option Schemes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSharebasedPaymentArrangementsExplanatory
417 1050 - Disclosure - Restricted A-Share Incentive Scheme Network

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420 Restricted A-Share Incentive Scheme Concept (Text Block (HTML)) For Period chu:DisclosureOfRestrictedAShareIncentiveSchemeExplanatory
421 1051 - Disclosure - Related Party Transactions Network

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422 Implied Table Table

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424 Related Party Transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
425 1052 - Disclosure - Contingencies and Commitments Network

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426 Implied Table Table

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428 Contingencies and Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
429 1053 - Disclosure - Comparative Figures Network

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430 Implied Table Table

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432 Comparative Figures Concept (Text Block (HTML)) For Period chu:DisclosureOfComparativeFiguresExplanatory
433 1054 - Disclosure - Non-Adjusting Events After The Reporting Period Network

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436 Non-Adjusting Events After The Reporting Period Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory
437 1055 - Disclosure - China Unicom (Hong Kong) Limited (Parent Company) Network

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440 China Unicom (Hong Kong) Limited (Parent Company) Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory
441 1056 - Disclosure - Approval of Financial Statements Network

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444 Approval of Financial Statements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAuthorisationOfFinancialStatementsExplanatory
445 1057 - Disclosure - Summary of Significant Accounting Policies (Policies) Network

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448 Statement of Compliance Concept (Text Block (HTML)) For Period ifrs-full:StatementOfIFRSCompliance
449 Basis of Preparation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
450 Subsidiaries and Non-Controlling Interests Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSubsidiariesExplanatory
451 Associates and Joint Ventures Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociatesAndJointVenturesExplanatory
452 Segment Reporting Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
453 Foreign Currency Translation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
454 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
455 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
456 Lease Prepayments Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForLeasePrepaymentsExplanatory
457 Contract costs Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForContractCostsExplanatory
458 Contract assets and contract liabilities Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForContractAssetsAndContractLiabilitiesExplanatory
459 Other Assets Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForOtherAssetsExplanatory
460 Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
461 Impairment of Non-Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
462 Credit losses from financial instruments, contract assets and lease receivables Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForCreditLossesFromFinancialInstrumentsContractAssetsAndLeaseReceivablesExplanatory
463 Inventories and Consumables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
464 Accounts Receivables Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
465 Short-term Bank Deposits Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForShortTermBankDepositsExplanatory
466 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
467 Government Grants Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGovernmentGrants
468 Borrowings Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingsExplanatory
469 Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIssuedCapitalExplanatory
470 Employee Benefits Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
471 Accounts Payable Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
472 Provisions Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForProvisionsExplanatory
473 Revenue Recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
474 Interest income Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInterestIncomeAndExpenseExplanatory
475 Dividend income Concept (Text Block (HTML)) For Period chu:DescriptionOfAccountingPolicyForDividendIncomeExplanatory
476 Leases (as the lessee) Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
477 Borrowing Costs Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
478 Taxation Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
479 Dividend Distribution Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDividendsExplanatory
480 Contingent Liabilities and Contingent Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory
481 Earnings per Share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
482 Related parties Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTransactionsWithRelatedPartiesExplanatory
483 1058 - Disclosure - Summary of Significant Accounting Policies (Tables) Network

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484 Statement [table] Table

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485 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
486 Currently stated [member] Member ifrs-full:RestatedMember
487 IFRS 15 [member] Member chu:IFRS15Member
488 Statement [LineItems] LineItems chu:StatementLineItems
489 Summary of Estimated Impact of Adoption of New Accounting Policy on Group's Consolidated Financial Statements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations
490 Summary of Impact of Transition to IFRS 9 on Retained Profits and Reserves and Related Tax Impact Concept (Text Block (HTML)) For Period chu:DisclosureOfImpactNetOfTaxOfTransitionToIFRS9OnReservesAndRetainedEarningsExplanatory
491 Summary of Reconciles of Closing and Opening Loss Allowance Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsExplanatory
492 Summary of Impact of Transition to IFRS 15 on Retained Profits and Reserves and Related Tax Impact Concept (Text Block (HTML)) For Period chu:DisclosureOfImpactNetOfTaxOfTransitionToIfrs15OnRetainedProfitsAndReservesExplanatory
493 Schedule of New and Amendments to IFRS and IAS Standards That Are Not Yet Effective for the Year Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
494 Summary of Estimated Useful Lives of Property Plant and Equipment Concept (Text Block (HTML)) For Period chu:DisclosureOfEstimatedUsefulLivesOfPropertyPlantAndEquipmentExplanatory
495 1059 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments (Tables) Network

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496 Statement [table] Table

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497 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
498 Risks [member] Member ifrs-full:TypesOfRisksMember
499 Foreign exchange risk [member] Member ifrs-full:CurrencyRiskMember
500 Statement [LineItems] LineItems chu:StatementLineItems
501 Summary of Foreign Exchange Risk Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsExplanatory
502 Summary of Undiscounted Balances of Financial Liabilities Concept (Text Block (HTML)) For Period ifrs-full:MaturityAnalysisForNonderivativeFinancialLiabilities
503 Summary of Debt-to-Capitalization Ratios Concept (Text Block (HTML)) For Period chu:DisclosureOfDebtToCapitalRatiosExplanatory
504 Summary of Assets Measured at Fair Value Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueMeasurementOfAssetsExplanatory
505 Summary of Financial Instruments Measured at Carrying Value that are not Materially Different from their Fair Values Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory
506 1060 - Disclosure - Revenue (Tables) Network

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509 Summary of Disaggregation of Revenue From Customers by Major Services and Products Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory
510 1061 - Disclosure - Network, Operation and Support Expenses (Tables) Network

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514 1062 - Disclosure - Employee Benefit Expenses (Tables) Network

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517 Summary of Employee Benefit Expenses Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationOnEmployeeBenefitsExpenseExplanatory
518 1063 - Disclosure - Costs of Telecommunications Products Sold (Tables) Network

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519 Implied Table Table

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520 Text block [abstract] Abstract chu:TextBlockAbstract
521 Summary of Costs of Telecommunications Products Sold Concept (Text Block (HTML)) For Period chu:DisclosureOfCostsOfTelecommunicationsAndProductsSoldExplanatory
522 1064 - Disclosure - Other Operating Expenses (Tables) Network

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523 Implied Table Table

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524 Text block [abstract] Abstract chu:TextBlockAbstract
525 Summary of Other Operating Expenses Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutOtherOperatingExpenseExplanatory
526 1065 - Disclosure - Finance Costs (Tables) Network

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527 Implied Table Table

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528 Text block [abstract] Abstract chu:TextBlockAbstract
529 Summary of Finance Costs Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutFinanceCostsExplanatory
530 1066 - Disclosure - Other Income - Net (Tables) Network

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531 Implied Table Table

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532 Text block [abstract] Abstract chu:TextBlockAbstract
533 Summary of Other Income - Net Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutOtherOperatingIncomeExplanatory
534 1067 - Disclosure - Taxation (Tables) Network

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535 Implied Table Table

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536 Text block [abstract] Abstract chu:TextBlockAbstract
537 Summary of Income Tax Expenses Concept (Text Block (HTML)) For Period chu:DisclosuresOfIncomeTaxExpensesExplanatory
538 Summary of Reconciliation Between Actual Income Tax Expense and Accounting Profit Concept (Text Block (HTML)) For Period chu:DisclosuresOfReconciliationBetweenActualIncomeTaxExpenseAndAccountingProfitExplanatory
539 Summary of Analysis of Deferred Tax Assets and Deferred Tax Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
540 Summary of Movement of Net Deferred Tax Assets/(Liabilities) Concept (Text Block (HTML)) For Period chu:DisclosureOfMovementInNetDeferredTaxAssetsAndLiabilitiesExplanatory
541 Summary of Components of Deferred Tax Assets/(Liabilities) Concept (Text Block (HTML)) For Period chu:DisclosureOfComponentsOfDeferredTaxAssetsAndLiabilitiesExplanatory
542 Summary of Temporary Differences Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
543 1068 - Disclosure - Earnings Per Share (Tables) Network

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544 Implied Table Table

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545 Text block [abstract] Abstract chu:TextBlockAbstract
546 Summary of Computation of Basic and Diluted Earnings Per Share Concept (Text Block (HTML)) For Period ifrs-full:EarningsPerShareExplanatory
547 Summary of Weighted Average Number of Ordinary Shares Concept (Text Block (HTML)) For Period chu:DisclosureOfNumberOfWeightedAverageSharesOutstandingExplanatory
548 1069 - Disclosure - Property, Plant and Equipment (Tables) Network

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549 Implied Table Table

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550 Text block [abstract] Abstract chu:TextBlockAbstract
551 Summary of Movements of Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
552 1070 - Disclosure - Lease Prepayments (Tables) Network

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553 Implied Table Table

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554 Text block [abstract] Abstract chu:TextBlockAbstract
555 Summary of Movement of Lease Prepayments Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutLeasePrepaymentsExplanatory
556 1071 - Disclosure - Investments in Subsidiaries (Tables) Network

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557 Implied Table Table

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558 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
559 Summary of Company's Subsidiaries Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
560 1072 - Disclosure - Interest in Associates (Tables) Network

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561 Statement [table] Table

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562 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
563 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
564 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
565 Statement [LineItems] LineItems chu:StatementLineItems
566 Summary of Share of Net Assets in Associates Concept (Text Block (HTML)) For Period chu:DisclosureOfShareOfAssetsOfAssociatesExplanatory
567 Summary of Particulars of Material Associate Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesExplanatory
568 Summary of Financial Information of Material Associate Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateExplanatory
569 Summary of Fair Values of Interests in Associates Based on Quoted Market Prices Without any Deduction for Transaction Costs Concept (Text Block (HTML)) For Period chu:FairValuesOfInterestsInAssociatesBasedOnQuotedMarketPricesWithoutAnyDeductionForTransactionCostsExplanatory
570 1073 - Disclosure - Interest in Joint Ventures (Tables) Network

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571 Implied Table Table

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572 Investments accounted for using equity method [abstract] Abstract ifrs-full:InvestmentsAccountedForUsingEquityMethodAbstract
573 Summary of Interests In Joint Venture Concept (Text Block (HTML)) For Period chu:DisclosureOfInterestsInJointVentureExplanatory
574 Summary of Company's Interest in Joint Venture Concept (Text Block (HTML)) For Period chu:DisclosureOfSignificantInvestmentsInJointVenturesExplanatory
575 Summary of Financial Information of Material Joint Venture Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfSummarisedFinancialInformationOfJointVentureAccountedForUsingEquityMethodToCarryingAmountOfInterestInJointVentureExplanatory
576 1074 - Disclosure - Contract Assets and Contract Liabilities (Tables) Network

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577 Implied Table Table

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578 Text block [abstract] Abstract chu:TextBlockAbstract
579 Summary of Contract Assets Concept (Text Block (HTML)) For Period chu:DisclosureOfContractAssetsExplanatory
580 Summary of Contract Liabilities Concept (Text Block (HTML)) For Period chu:DisclosureOfContractLiabilitiesExplanatory
581 1075 - Disclosure - Contract Costs (Tables) Network

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582 Implied Table Table

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583 Text block [abstract] Abstract chu:TextBlockAbstract
584 Schedule of Contract Costs Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutContractCostsExplanatory
585 1076 - Disclosure - Financial Assets at Fair Value through Other Comprehensive Income (Tables) Network

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586 Implied Table Table

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587 Text block [abstract] Abstract chu:TextBlockAbstract
588 Summary of Financial Assets at Fair Value through Other Comprehensive Income Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutFinancialAssetsAtFairValueThroughOtherComprehensiveIncomeExplanatory
589 1077 - Disclosure - Other Assets (Tables) Network

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590 Implied Table Table

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591 Text block [abstract] Abstract chu:TextBlockAbstract
592 Summary of Other Assets Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutOtherNoncurrentAssetsExplanatory
593 1078 - Disclosure - Inventories and Consumables (Tables) Network

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594 Implied Table Table

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595 Text block [abstract] Abstract chu:TextBlockAbstract
596 Summary of Inventories and Consumables Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutInventoriesExplanatory
597 1079 - Disclosure - Accounts Receivable (Tables) Network

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598 Statement [table] Table

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599 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
600 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
601 Accounts receivables [member] Member ifrs-full:TradeReceivablesMember
602 Statement [LineItems] LineItems chu:StatementLineItems
603 Summary of Accounts Receivable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinancialAssetsExplanatory
604 Summary of Aging Analysis of Accounts Receivable Concept (Text Block (HTML)) For Period chu:DisclosureOfAgingAnalysisOfAccountsReceivableExplanatory
605 Summary of Information about Groups Exposure to Credit Risk and Expected Credit Loss for Account Receivables Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCreditRiskExposureExplanatory
606 Summary of Receivables Past Due but not Impaired Concept (Text Block (HTML)) For Period ifrs-full:AnalysisOfAgeOfFinancialAssetsThatArePastDueButNotImpaired
607 Summary of Movement in Allowance for Doubtful Debts Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAllowanceForCreditLossesExplanatory
608 1080 - Disclosure - Prepayments and Other Current Assets (Tables) Network

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609 Implied Table Table

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610 Text block [abstract] Abstract chu:TextBlockAbstract
611 Summary of Prepayments and Other Current Assets Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutPrepaymentsAndOtherCurrentAssetsExplanatory
612 1081 - Disclosure - Short-term Bank Deposits and Restricted Deposits (Tables) Network

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613 Implied Table Table

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614 Text block [abstract] Abstract chu:TextBlockAbstract
615 Summary of Short-term Bank Deposits and Restricted Deposits Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutShortTermBankDepositsAndRestrictedDepositsExplanatory
616 1082 - Disclosure - Cash And Cash Equivalents And Other Cash Flow Information (Tables) Network

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617 Implied Table Table

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618 Text block [abstract] Abstract chu:TextBlockAbstract
619 Summary of Cash and Cash Equivalents Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutCashAndCashEquivalentsExplanatory
620 Summary of Reconciliation of Liabilities Arising from Financing Activities Concept (Text Block (HTML)) For Period chu:DisclosureOfReconciliationOfLiabilitiesToCashFlowsArisingFromFinancingActivitiesExplanatory
621 1083 - Disclosure - Share Capital (Tables) Network

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622 Implied Table Table

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623 Text block [abstract] Abstract chu:TextBlockAbstract
624 Summary of Share Capital Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutIssuedCapitalExplanatory
625 1084 - Disclosure - Dividends (Tables) Network

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626 Implied Table Table

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627 Text block [abstract] Abstract chu:TextBlockAbstract
628 Summary of Proposed Final Dividend Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutDividendsExplanatory
629 1085 - Disclosure - Long-Term Bank Loans (Tables) Network

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630 Implied Table Table

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631 Text block [abstract] Abstract chu:TextBlockAbstract
632 Summary of Long-Term Bank Loans Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
633 Summary of Repayment Schedule of Long-Term Bank Loans Concept (Text Block (HTML)) For Period chu:DisclosureOfRepaymentScheduleOfBorrowingsExplanatory
634 1086 - Disclosure - Deferred Revenue (Tables) Network

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635 Implied Table Table

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636 Text block [abstract] Abstract chu:TextBlockAbstract
637 Summary of Deferred Revenue Concept (Text Block (HTML)) For Period chu:DisclosureOfDeferredRevenueByArrangementExplanatory
638 1087 - Disclosure - Other Obligations (Tables) Network

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639 Implied Table Table

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640 Text block [abstract] Abstract chu:TextBlockAbstract
641 Summary of Other Obligations Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutOtherProvisionsExplanatory
642 1088 - Disclosure - Short-Term Bank Loans (Tables) Network

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643 Implied Table Table

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644 Text block [abstract] Abstract chu:TextBlockAbstract
645 Summary of Short-Term Bank Loans Concept (Text Block (HTML)) For Period chu:DisclosureOfDetailedInformationAboutShortTermBankLoansExplanatory
646 1089 - Disclosure - Accounts Payable and Accrued Liabilities (Tables) Network

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647 Implied Table Table

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648 Text block [abstract] Abstract chu:TextBlockAbstract
649 Summary of Accounts Payable and Accrued Liabilities Concept (Text Block (HTML)) For Period chu:DisclosureOfAccountsPayableAndAccruedLiabilitiesExplanatory
650 Summary of Aging Analysis of Accounts Payables and Accrued Liabilities Concept (Text Block (HTML)) For Period chu:DisclosureOfAgingAnalysisOfTradePayablesExplanatory
651 1090 - Disclosure - Related Party Transactions (Tables) Network

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652 Statement [table] Table

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653 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
654 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
655 Connected transactions with Unicom Group and its subsidiaries [member] Member chu:ConnectedTransactionsWithUnicomGroupAndItsSubsidiariesMember
656 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
657 China United Network Communications Group Company Limited and its subsidiaries [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedAndItsSubsidiariesMember
658 Joint ventures where entity is venturer [member] Member ifrs-full:JointVenturesWhereEntityIsVenturerMember
659 Statement [LineItems] LineItems chu:StatementLineItems
660 Summary of Transactions Between Related Parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
661 1091 - Disclosure - Contingencies and Commitments (Tables) Network

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662 Implied Table Table

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663 Text block [abstract] Abstract chu:TextBlockAbstract
664 Summary of Capital Commitments Concept (Text Block (HTML)) For Period chu:DisclosureOfCapitalCommitmentsExplanatory
665 Summary of Total Future Aggregate Minimum Operating Lease Payments Under Non-cancellable Operating Leases and Other Commitments Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
666 1092 - Disclosure - China Unicom (Hong Kong) Limited (Parent Company) (Tables) Network

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667 Statement [table] Table

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668 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
669 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
670 Parent [member] Member ifrs-full:ParentMember
671 Statement [LineItems] LineItems chu:StatementLineItems
672 Condensed Statements of Financial Position Concept (Text Block (HTML)) For Period srt:ScheduleOfCondensedBalanceSheetTableTextBlock
673 Condensed Statements of Comprehensive Income Concept (Text Block (HTML)) For Period srt:ScheduleOfCondensedIncomeStatementTableTextBlock
674 Condensed Statements of Cash Flows Concept (Text Block (HTML)) For Period srt:ScheduleOfCondensedCashFlowStatementTableTextBlock
675 1093 - Disclosure - Organization and Principal Activities - Additional Information (Detail) Network

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676 Disclosure of organization and principal activities [Table] Table

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677 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
678 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
679 China United Network Communication Limited (A Share Company) [member] Member chu:ChinaUnitedNetworkCommunicationLimitedAShareCompanyMember
680 China Unicom (BVI) Limited [member] Member chu:ChinaUnicomBVILimitedMember
681 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
682 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
683 China Structural Reform Fund Corporation [member] Member chu:ChinaStructuralReformFundCorporationMember
684 Line items representing organization and principal activities [Line Items] LineItems chu:DisclosureOfOrganizationAndPrincipalActivitiesLineItems
685 Cash consideration Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
686 Cash consideration Concept (Monetary) As Of Credit chu:PortionOfConsiderationReceivableReceivedConsistingOfCashAndCashEquivalents
687 Shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
688 Owned interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
689 1094 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) Network

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690 Disclosure of significant accounting policies [Table] Table

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691 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
692 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
693 Revolving banking facilities [member] Member chu:RevolvingBankingFacilitiesAndCorporateBondsMember
694 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
695 New IFRSs [member] Member ifrs-full:NewIFRSsMember
696 IFRS 16, "Leases" [member] Member chu:IFRS16LeasesMember
697 Range [axis] Axis ifrs-full:RangeAxis
698 Ranges [member] Member ifrs-full:RangesMember
699 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
700 Top of range [member] Member ifrs-full:TopOfRangeMember
701 Currency [Axis] Axis srt:CurrencyAxis
702 All Currencies [Domain] Member currency:AllCurrenciesDomain
703 US dollars [member] Member currency:USD
704 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
705 Currently stated [member] Member ifrs-full:RestatedMember
706 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
707 Impact on Initial Application of IFRS15 [member] Member chu:ImpactOnInitialApplicationOfIfrs15Member
708 Impact on initial application of IFRS 9 (2014) [member] Member chu:ImpactOfInitialApplicationOfIFRS92014Member
709 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
710 Equity [member] Member ifrs-full:EquityMember
711 Reserves and retained profits [member] Member chu:ReservesAndRetainedProfitsMember
712 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
713 Assets [member] Member ifrs-full:ClassesOfAssetsMember
714 Prepayments And Other Current Assets [member] Member chu:PrepaymentsAndOtherCurrentAssetsMember
715 Other assets [member] Member ifrs-full:OtherAssetsMember
716 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
717 Liabilities [member] Member ifrs-full:LiabilitiesMember
718 Advance Payment From Customers [member] Member chu:AdvancePaymentFromCustomersMember
719 Deferred revenue on subscriber points reward program [member] Member chu:DeferredRevenueMember
720 Current portion of deferred revenue [member] Member chu:CurrentPortionOfDeferredRevenueMember
721 Advances from customers [member] Member chu:AccountsPayableAndAccruedLiabilitiesMember
722 Liabilities arising from financing activities [axis] Axis ifrs-full:LiabilitiesArisingFromFinancingActivitiesAxis
723 Liabilities arising from financing activities [member] Member ifrs-full:LiabilitiesArisingFromFinancingActivitiesMember
724 Allocated portion of fair value for the subscriber points reward [member] Member chu:AllocatedPortionOfFairValueForTheSubscriberPointsRewardMember
725 Deferred revenue on Installation fees of fixed-line service [member] Member chu:DeferredRevenueOnInstallationFeesOfFixedlineServiceMember
726 Installation fees of fixed-line service [member] Member chu:InstallationFeesOfFixedlineServiceMember
727 Deferred revenue on advances received from customers for transmission lines usage and associated services [member] Member chu:DeferredRevenueOnAdvancesReceivedFromCustomersForTransmissionLinesUsageAndAssociatedServicesMember
728 Advance value added tax received from customer [member] Member chu:AdvanceValueAddedTaxReceivedFromCustomerMember
729 Line items representing significant accounting policies [Line Items] LineItems chu:DisclosureOfSignificantAccountingPoliciesLineItems
730 Amount current liabilities of the Group exceeded current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
731 Revolving banking facilities Concept (Monetary) As Of Credit chu:MaximumBorrowingsCapacity
732 Unutilized revolving banking facilities Concept (Monetary) As Of Credit ifrs-full:UndrawnBorrowingFacilities
733 Recognition of additional expected credit losses on: - financial assets measured at amortized cost Concept (Monetary) For Period Debit chu:RecognitionOfCreditLossesOnFinancialAssetsMeasuredAtAmortizedCost
734 Related tax Concept (Monetary) For Period Debit chu:TaxImpactOnRetainedProfitsAndReserves
735 Net increase (decrease) in retained profits and reserves Concept (Monetary) For Period Credit chu:IncreaseDecreaseInRetainedProfitsAndReservesNet
736 Contract assets Concept (Monetary) As Of Debit ifrs-full:ContractAssets
737 Contract costs Concept (Monetary) As Of Debit chu:ContractCosts
738 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
739 Lease liabilities Concept (Monetary) As Of Credit ifrs-full:LeaseLiabilities
740 Right-of-use assets Concept (Monetary) As Of Debit ifrs-full:RightofuseAssets
741 Foreign exchange currency rate, RMB per US$1.00 Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
742 Present value of the defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
743 1095 - Disclosure - Summary of Significant Accounting Policies - Summary of Opening Balance Adjustments Recognized in the Consolidated Statement of Financial Position Impacted by IFRS 9 (2014) and IFRS 15 (Detail) Network

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744 Disclosure of initial application of standards or interpretations [table] Table

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745 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
746 Currently stated [member] Member ifrs-full:RestatedMember
747 Adjustment for Adoption of IFRS 9 [member] Member chu:AdjustmentForAdoptionOfIFRS9Member
748 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
749 Balance After IFRS Adjustments [member] Member chu:BalanceAfterIfrsAdjustmentsMember
750 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
751 ASSETS Abstract ifrs-full:AssetsAbstract
752 Deferred income tax assets Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
753 Contract assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentContractAssets
754 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
755 Contract costs Concept (Monetary) As Of Debit chu:ContractCostsNoncurrent
756 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
757 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
758 Prepayments and other current assets Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
759 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
760 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
761 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
762 EQUITY Abstract ifrs-full:EquityAbstract
763 Reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
764 Retained profits Abstract chu:RetainedProfitsAbstract
765 Proposed final dividend Concept (Monetary) As Of Credit chu:ProposedFinalDividend
766 Others Concept (Monetary) As Of Credit chu:OtherRetainedProfits
767 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
768 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
769 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
770 Current portion of deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
771 Advances from customers Concept (Monetary) As Of Credit ifrs-full:CurrentAdvances
772 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
773 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
774 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
775 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentContractLiabilities
776 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
777 Net current liabilities Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
778 Total assets less current liabilities Concept (Monetary) As Of Debit ifrs-full:AssetsLessCurrentLiabilities
779 1096 - Disclosure - Summary of Significant Accounting Policies - Summary of Impact of Transition to IFRS 9 on Retained Profits and Reserves and Related Tax Impact (Detail) Network

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780 Disclosure of Impact (net of tax) of transition to IFRS 9 on reserves and retained earnings [table] Table

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781 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
782 Currently stated [member] Member ifrs-full:RestatedMember
783 Impact on initial application of IFRS 9 (2014) [member] Member chu:ImpactOfInitialApplicationOfIFRS92014Member
784 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
785 Equity [member] Member ifrs-full:EquityMember
786 Reserves and retained profits [member] Member chu:ReservesAndRetainedProfitsMember
787 Disclosure of Impact (net of tax) of transition to IFRS 9 on reserves and retained earnings [line items] LineItems chu:DisclosureOfImpactNetOfTaxOfTransitionToIFRS9OnReservesAndRetainedEarningsLineItems
788 Recognition of additional expected credit losses on: - financial assets measured at amortized cost Concept (Monetary) For Period Debit chu:AdditionalCreditLossRecognised
789 Related tax Concept (Monetary) For Period Debit chu:TaxImpactOnRetainedProfitsAndReserves
790 Net increase (decrease) in retained profits and reserves at January 1, 2018 Concept (Monetary) For Period Credit chu:IncreaseDecreaseInRetainedProfitsAndReservesNet
791 1097 - Disclosure - Summary of Significant Accounting Policies - Summary of Reconciles of Closing and Opening Loss Allowance (Detail) Network

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792 Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [table] Table

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793 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
794 Currently stated [member] Member ifrs-full:RestatedMember
795 Impact on initial application of IFRS 9 (2014) [member] Member chu:ImpactOfInitialApplicationOfIFRS92014Member
796 Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInLossAllowanceAndExplanationOfChangesInGrossCarryingAmountForFinancialInstrumentsLineItems
797 Balance, beginning of year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
798 Additional credit loss recognized at January 1, 2018 on: - Accounts receivable Concept (Monetary) For Period Debit chu:AdditionalCreditLossRecognised
799 Balance, end of year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
800 1098 - Disclosure - Summary of Significant Accounting Policies - Summary of Impact of Transition to IFRS 15 on Retained Profits and Reserves and Related Tax Impact (Detail) Network

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801 Disclosure of Impact (net of tax) of transition to IFRS 15 on retained profits and reserves [table] Table

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802 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
803 Currently stated [member] Member ifrs-full:RestatedMember
804 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
805 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
806 Equity [member] Member ifrs-full:EquityMember
807 Reserves and retained profits [member] Member chu:ReservesAndRetainedProfitsMember
808 Disclosure of Impact (net of tax) of transition to IFRS 15 on retained profits and reserves [line items] LineItems chu:DisclosureOfImpactNetOfTaxOfTransitionToIfrs15OnRetainedProfitsAndReservesLineItems
809 Capitalization of sales commissions Concept (Monetary) For Period Credit chu:CapitalizationOfSalesCommissionsOnRetainedProfitsAndReserves
810 Related tax Concept (Monetary) For Period Debit chu:TaxImpactOnRetainedProfitsAndReserves
811 Net increase (decrease) in retained profits and reserves at January 1, 2018 Concept (Monetary) For Period Credit chu:IncreaseDecreaseInRetainedProfitsAndReservesNet
812 1099 - Disclosure - Summary of Significant Accounting Policies - Summary of Estimated Impact of Adoption of IFRS 15 on Group's Consolidated Financial Statements (Detail) Network

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813 Disclosure of expected impact of initial application of new standards or interpretations [table] Table

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814 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
815 Currently stated [member] Member ifrs-full:RestatedMember
816 IFRS 15 [member] Member chu:IFRS15Member
817 Hypothetical amount under IASs 18 and 11 [member] Member chu:HypotheticalAmountUnderIass18And11Member
818 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
819 Disclosure of expected impact of initial application of new standards or interpretations [line items] LineItems ifrs-full:DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretationsLineItems
820 Line items in the consolidated statements of income for the year ended December 31, 2018 impacted by the adoption of IFRS 15: Abstract ifrs-full:IncomeStatementAbstract
821 Other operating expenses Concept (Monetary) For Period Credit ifrs-full:OtherOperatingIncomeExpense
822 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
823 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
824 Net income for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
825 Net Income attributable to equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
826 Earnings per share for income attributable to equity shareholders of the Company during the year: Abstract ifrs-full:EarningsPerShareAbstract
827 Basic earnings per share (RMB) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
828 Diluted earnings per share (RMB) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
829 Line items in the consolidated statements of comprehensive income for the year ended December 31, 2018 impacted by the adoption of IFRS 15: Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
830 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
831 Total comprehensive income attributable to: Abstract ifrs-full:ComprehensiveIncomeAttributableToAbstract
832 Equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
833 Line items in the consolidated statements of financial position as of December 31, 2018 impacted by the adoption of IFRS 15: Abstract ifrs-full:StatementOfFinancialPositionAbstract
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835 Deferred income tax assets Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
836 Contract assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentContractAssets
837 Other assets Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
838 Contract costs Concept (Monetary) As Of Debit chu:ContractCostsNoncurrent
839 Total non-currentassets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
840 Prepayments and other current assets Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
841 Contract assets Concept (Monetary) As Of Debit ifrs-full:CurrentContractAssets
842 Total current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
843 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
844 EQUITY Abstract ifrs-full:EquityAbstract
845 Reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
846 Retained profits Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
847 - Others Concept (Monetary) As Of Credit chu:OtherRetainedProfits
848 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
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850 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
851 Taxes payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
852 Current portion of deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
853 Advances from customers Concept (Monetary) As Of Credit ifrs-full:CurrentAdvances
854 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentContractLiabilities
855 Total current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
856 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
857 Net current liabilities Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
858 Total assets less current liabilities Concept (Monetary) As Of Debit ifrs-full:AssetsLessCurrentLiabilities
859 Line items in the reconciliation of income before taxation to cash generated from operations for the year ended December 31, 2018 impacted by the adoption of IFRS 15: Abstract ifrs-full:AdjustmentsForReconcileProfitLossAbstract
860 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
861 Increase in contract costs Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInContractCosts
862 Decrease/(Increase) in other assets Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInOtherAssets
863 Decrease in contract assets Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInContractAssets
864 Decrease in prepayments and other current assets Concept (Monetary) For Period Debit chu:AdjustmentsForDecreaseIncreaseInPrepaymentsAndOtherCurrentAssets
865 Increase in accounts payable and accrued liabilities Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInTradeAccountPayable
866 Decrease in contract liabilities Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInContractLiabilities
867 Increase in deferred revenue Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
868 Increase/(Decrease) in advances from customers Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInAdvancesReceived
869 1100 - Disclosure - Summary of Significant Accounting Policies - Schedule of New and Amendments to IFRS and IAS Standards That Are Not Yet Effective for the Year (Detail) Network

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870 Disclosure of initial application of standards or interpretations [table] Table

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871 New IFRSs [axis] Axis ifrs-full:NewIFRSsAxis
872 New IFRSs [member] Member ifrs-full:NewIFRSsMember
873 IFRS 16, "Leases" [member] Member chu:IFRS16LeasesMember
874 IFRIC 23, "Uncertainty over income tax treatments" [member] Member chu:Ifric23UncertaintyOverIncomeTaxTreatmentsMember
875 Annual improvements to IFRSs 2015-2017 cycle [member] Member chu:AnnualImprovementsToIfrss20152017CycleMember
876 Amendments to IAS 28, Long-term interest in associates and joint ventures [member] Member chu:AmendmentsToIas28LongtermInterestInAssociatesAndJointVenturesMember
877 Disclosure of initial application of standards or interpretations [line items] LineItems ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
878 Effective for accounting periods beginning on or after Concept (Date) For Period ifrs-full:DateByWhichApplicationOfNewIFRSIsRequired
879 1101 - Disclosure - Summary of Significant Accounting Policies - Summary of Estimated Useful Lives of Property Plant and Equipment (Detail) Network

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

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881 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
882 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
883 Buildings [member] Member ifrs-full:BuildingsMember
884 Telecommunications equipment [member] Member ifrs-full:CommunicationAndNetworkEquipmentMember
885 Office furniture, fixtures, motor vehicles and other equipment [member] Member chu:OfficeFurnitureFixturesMotorVehiclesAndOtherEquipmentMember
886 Range [axis] Axis ifrs-full:RangeAxis
887 Ranges [member] Member ifrs-full:RangesMember
888 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
889 Top of range [member] Member ifrs-full:TopOfRangeMember
890 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
891 Depreciable life Concept (Text/String) For Period ifrs-full:UsefulLivesOrDepreciationRatesPropertyPlantAndEquipment
892 Residual rate Concept (Percent) For Period chu:PropertyPlantAndEquipmentResidualRate
893 1102 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments - Summary of Foreign Exchange Risk (Detail) Network

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

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895 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
896 Risks [member] Member ifrs-full:TypesOfRisksMember
897 Foreign exchange risk [member] Member ifrs-full:CurrencyRiskMember
898 Currency [Axis] Axis srt:CurrencyAxis
899 All Currencies [Domain] Member currency:AllCurrenciesDomain
900 HK dollars [member] Member currency:HKD
901 US dollars [member] Member currency:USD
902 Euro [member] Member currency:EUR
903 Japanese Yen [member] Member currency:JPY
904 SGD [member] Member currency:SGD
905 CHF [member] Member currency:CHF
906 GBP [member] Member currency:GBP
907 Disclosure of nature and extent of risks arising from financial instruments [Line Items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
908 Exchange rate Concept (Decimal) As Of ifrs-full:ClosingForeignExchangeRate
909 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
910 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
911 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncome
912 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
913 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
914 Total Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
915 Accounts payable Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
916 Total financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
917 1103 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments - Additional Information (Detail) Network

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

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921 Foreign exchange risk [member] Member ifrs-full:CurrencyRiskMember
922 Price risk [member] Member ifrs-full:EquityPriceRiskMember
923 Interest rate risk [member] Member ifrs-full:InterestRateRiskMember
924 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
925 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
926 Cash and cash equivalents, borrowings and obligations under finance lease [member] Member chu:CashAndCashEquivalentsBorrowingsAndObligationsUnderFinanceLeaseMember
927 Financial assets recorded in fair value through other comprehensive income [member] Member ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
928 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
929 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
930 China United Network Communications Group Company Limited and its subsidiaries [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedAndItsSubsidiariesMember
931 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
932 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
933 Smart Steps Digital Technology Co., Ltd [member] Member chu:SmartStepsDigitalTechnologyCoLtdMember
934 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
935 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
936 Fixed rate [member] Member ifrs-full:FixedInterestRateMember
937 Counterparties [axis] Axis ifrs-full:CounterpartiesAxis
938 Counterparties [member] Member ifrs-full:CounterpartiesMember
939 Finance Company Limited [member] Member chu:FinanceCompanyLimitedMember
940 Range [axis] Axis ifrs-full:RangeAxis
941 Ranges [member] Member ifrs-full:RangesMember
942 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
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944 Disclosure of detailed information about financial instruments [Line Items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
945 RMB percentage of strengthened/weakened against foreign currencies Concept (Percent) As Of chu:RiskExposureAssociatedWithInstrumentsSharingCharacteristicPercentageChangeInRisk
946 RMB strengthened/weakened against foreign currencies effect on income after tax and other comprehensive income Concept (Monetary) As Of chu:ForeignExchangeRiskExposureAssociatedWithInstruments
947 Floating rate borrowings and short-term fixed rate borrowings Concept (Monetary) As Of Credit chu:OutstandingFundsFloatingRateAndOutstandingShorttermFundsFixedRate
948 Long-term borrowings Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
949 Balance of deposits received by Finance Company Concept (Monetary) As Of Debit chu:ShorttermBankDepositsAndRestrictedDeposits
950 Transfer between Level 1 and Level 2 Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel1IntoLevel2OfFairValueHierarchyAssets
951 Transfer between Level 2 and Level 1 Concept (Monetary) For Period ifrs-full:TransfersOutOfLevel2IntoLevel1OfFairValueHierarchyAssets
952 Transfer into Level 3 Concept (Monetary) For Period Debit ifrs-full:TransfersIntoLevel3OfFairValueHierarchyAssets
953 Transfer out of Level 3 Concept (Monetary) For Period Credit ifrs-full:TransfersOutOfLevel3OfFairValueHierarchyAssets
954 Percentage of market rates Concept (Percent) For Period chu:PercentageOfMarketRates
955 1104 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments - Summary of Undiscounted Balances of Financial Liabilities (Detail) Network

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

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959 Less than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
960 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
961 Between 2 and 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
962 Over 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
963 Disclosure of maturity analysis for non-derivative financial liabilities [Line Items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
964 Long-term bank loans Concept (Monetary) As Of Credit chu:LongtermLoansUndiscountedCashFlows
965 Corporate bonds Concept (Monetary) As Of Credit chu:CorporateBondsUndiscountedCashFlows
966 Promissory notes Concept (Monetary) As Of Credit chu:PromissoryNotesUndiscountedCashFlows
967 Other obligations Concept (Monetary) As Of Credit chu:OtherObligationsUndiscountedCashFlows
968 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
969 Amounts due to related parties Concept (Monetary) As Of Credit chu:AmountsDueToRelatedPartiesUndiscountedCashFlows
970 Amounts due to ultimate holding company Concept (Monetary) As Of Credit chu:AmountsDueToUltimateHoldingCompanyUndiscountedCashFlows
971 Amounts due to domestic carriers Concept (Monetary) As Of Credit chu:AmountsDueToDomesticCarriersUndiscountedCashFlows
972 Commercial papers Concept (Monetary) As Of Credit chu:CommercialPapersUndiscountedCashFlows
973 Short-term bank loans Concept (Monetary) As Of Credit chu:ShorttermLoansUndiscountedCashFlows
974 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
975 1105 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments - Summary of Debt-to-Capitalization Ratios (Detail) Network

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976 Implied Table Table

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977 Disclosure of objectives, policies and processes for managing capital [abstract] Abstract ifrs-full:DisclosureOfObjectivesPoliciesAndProcessesForManagingCapitalAbstract
978 Commercial papers Concept (Monetary) As Of Credit ifrs-full:CurrentCommercialPapersIssuedAndCurrentPortionOfNoncurrentCommercialPapersIssued
979 Short-term bank loans Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
980 Long-term bank loans Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentLoansReceived
981 Corporate bonds Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
982 Obligations under finance lease included in other obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
983 Amounts due to ultimate holding company Concept (Monetary) As Of Credit chu:AmountsDueToUltimateHoldingCompany
984 Amounts due to related parties Concept (Monetary) As Of Credit chu:AmountsDueToRelatedParties
985 Current portion of long-term bank loans Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
986 Current portion of promissory notes Concept (Monetary) As Of Credit ifrs-full:CurrentNotesAndDebenturesIssuedAndCurrentPortionOfNoncurrentNotesAndDebenturesIssued
987 Current portion of corporate bonds Concept (Monetary) As Of Credit ifrs-full:CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued
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991 Interest-bearing debts plus total equity Concept (Monetary) As Of Credit chu:InterestBearingDebtPlusEquity
992 Debt-to-capitalization ratio Concept (Percent) As Of chu:PercentageOfDebtToCapitalization
993 1106 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments - Summary of Assets Measured at Fair Value (Detail) Network

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

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996 Aggregated measurement [member] Member ifrs-full:AggregatedMeasurementMember
997 Recurring fair value measurement [Member] Member ifrs-full:RecurringFairValueMeasurementMember
998 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
999 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1000 Equity securities listed [Member] Member chu:EquitySecuritiesListedMember
1001 Equity securities unlisted [Member] Member chu:EquitySecuritiesUnlistedMember
1002 Equity Securities Wealth Management Products [member] Member chu:EquitySecuritiesWealthManagementProductsMember
1003 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1004 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1005 Level 1 [Member] Member ifrs-full:Level1OfFairValueHierarchyMember
1006 Level 2 [Member] Member ifrs-full:Level2OfFairValueHierarchyMember
1007 Level 3 [Member] Member ifrs-full:Level3OfFairValueHierarchyMember
1008 Disclosure of fair value measurement of assets [Line Items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1009 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
1010 Financial assets at fair value through other profit or loss Concept (Monetary) As Of Debit ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss
1011 Total Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1012 1107 - Disclosure - Financial Risk Management and Fair Values of Financial Instruments - Summary of Financial Instruments Measured at Carrying Value that are not Materially Different from their Fair Values (Detail) Network

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1013 Disclosure of fair value measurement of liabilities [table] Table

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1014 Measurement [axis] Axis ifrs-full:MeasurementAxis
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1016 Fair value [Member] Member ifrs-full:AtFairValueMember
1017 Levels of fair value hierarchy [axis] Axis ifrs-full:LevelsOfFairValueHierarchyAxis
1018 All levels of fair value hierarchy [member] Member ifrs-full:AllLevelsOfFairValueHierarchyMember
1019 Level 1 [Member] Member ifrs-full:Level1OfFairValueHierarchyMember
1020 Level 2 [Member] Member ifrs-full:Level2OfFairValueHierarchyMember
1021 Disclosure of fair value measurement of liabilities [Line Items] LineItems ifrs-full:DisclosureOfFairValueMeasurementOfLiabilitiesLineItems
1022 Non-current portion of long-term bank loans Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentLoansReceived
1023 Non-current portion of corporate bonds Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentBondsIssued
1024 1108 - Disclosure - Critical Accounting Estimates and Judgments - Additional Information (Detail) Network

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1025 Implied Table Table

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1026 Disclosure of changes in accounting estimates [abstract] Abstract ifrs-full:DisclosureOfChangesInAccountingEstimatesAbstract
1027 Net deferred tax assets Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
1028 1109 - Disclosure - Revenue - Additional Information (Detail) Network

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1029 Disclosure of products and services [table] Table

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1031 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1032 Basic telecommunications services [member] Member chu:BasicTelecommunicationsServicesMember
1033 Sales of telecommunications products [member] Member chu:SalesOfTelecommunicationsProductsMember
1034 Value-added telecommunications services [member] Member chu:ValueAddedTelecommunicationsServicesMember
1035 Disclosure of products and services [Line Items] LineItems ifrs-full:DisclosureOfProductsAndServicesLineItems
1036 Value added tax rate Concept (Percent) For Period chu:ValueAddedTaxRate
1037 1110 - Disclosure - Revenue - Summary of Disaggregation of Revenue From Customers by Major Services and Products (Detail) Network

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1038 Disclosure of products and services [table] Table

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1039 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1040 Currently stated [member] Member ifrs-full:RestatedMember
1041 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
1042 Disclosure of products and services [Line Items] LineItems ifrs-full:DisclosureOfProductsAndServicesLineItems
1043 Voice usage and monthly fees Concept (Monetary) For Period Credit chu:RevenueFromUsageAndMonthlyFees
1044 Broadband and mobile data services Concept (Monetary) For Period Credit chu:RevenueFromBroadBandAndMobileData
1045 Data and internet application services Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfInternetAndDataServices
1046 Other value-added services Concept (Monetary) For Period Credit chu:RevenueFromDataInformationAndOtherValueaddedServicesRevenue
1047 Interconnection fees Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfInterconnectionServices
1048 Transmission lines usage and associated services Concept (Monetary) For Period Credit chu:RevenueFromTransmissionLinesUsageAndAssociatedServices
1049 Other services Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfOtherTelecommunicationServices
1050 Total service revenue Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfTelecommunicationServices
1051 Sales of telecommunications products Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfTelecommunicationEquipment
1052 Total Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1053 Revenue from contracts with customers Concept (Monetary) For Period Credit ifrs-full:RevenueFromContractsWithCustomers
1054 Revenue from other sources Concept (Monetary) For Period Credit ifrs-full:OtherRevenue
1055 1111 - Disclosure - Network, Operation and Support Expenses - Summary of Network, Operation and Support Expenses (Detail) Network

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1056 Disclosure of analysis of income and expense [Table] Table

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1058 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1059 Network, operation and support expenses [member] Member chu:NetworkOperationAndSupportExpensesMember
1060 Assets and liabilities [axis] Axis ifrs-full:AssetsAndLiabilitiesAxis
1061 Assets and liabilities [member] Member ifrs-full:AssetsAndLiabilitiesMember
1062 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
1063 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
1064 Disclosure of analysis of income and expense [Line Items] LineItems chu:DisclosureOfAnalysisOfIncomeAndExpenseLineItems
1065 Repairs and maintenance Concept (Monetary) For Period Debit ifrs-full:RepairsAndMaintenanceExpense
1066 Power and water charges Concept (Monetary) For Period Debit chu:PowerAndWaterCharges
1067 Operating lease and other services charges for network, premises, equipment and facilities Concept (Monetary) For Period Debit ifrs-full:LeaseAndSubleasePaymentsRecognisedAsExpense
1068 Operating lease and other service charges Concept (Monetary) For Period Credit chu:OperatingLeaseAndOtherServiceCharges
1069 Others Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
1070 Network operations and support expenses Concept (Monetary) For Period Debit chu:NetworkOperationAndSupportExpenses
1071 1112 - Disclosure - Employee Benefit Expenses - Summary of Employee Benefit Expenses (Detail) Network

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1072 Implied Table Table

*

*

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1073 Classes of employee benefits expense [abstract] Abstract ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
1074 Salaries and wages Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
1075 Contributions to defined contribution pension schemes Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1076 Contributions to medical insurance Concept (Monetary) For Period Debit chu:PostemploymentBenefitExpenseDefinedContributionsToMedicalInsurance
1077 Contributions to housing fund Concept (Monetary) For Period Debit chu:PostemploymentBenefitExpenseDefinedContributionToHousingFund
1078 Other housing benefits Concept (Monetary) For Period Debit ifrs-full:OtherEmployeeExpense
1079 Share-based compensation Concept (Monetary) For Period Debit chu:ShareBasedCompensationExpense
1080 Employee benefit expenses Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1081 1113 - Disclosure - Costs of Telecommunications Products Sold - Summary of Costs of Telecommunications Products Sold (Detail) Network

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1082 Disclosure of products and services [table] Table

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1083 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1084 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1085 Handsets and other telecommunication products [member] Member chu:HandsetsAndOtherCustomerEndProductsMember
1086 Others [member] Member chu:OtherProductsMember
1087 Disclosure of products and services [Line Items] LineItems ifrs-full:DisclosureOfProductsAndServicesLineItems
1088 Costs of telecommunications products sold Concept (Monetary) For Period Debit ifrs-full:CostOfMerchandiseSold
1089 1114 - Disclosure - Other Operating Expenses - Summary of Other Operating Expenses (Detail) Network

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1090 Disclosure of analysis of income and expense [Table] Table

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1091 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
1092 Products and services [member] Member ifrs-full:ProductsAndServicesMember
1093 Other operating expenses [Member] Member chu:OtherOperatingExpensesMember
1094 Disclosure of analysis of income and expense [Line Items] LineItems chu:DisclosureOfAnalysisOfIncomeAndExpenseLineItems
1095 Credit loss allowance and write-down of inventories Concept (Monetary) For Period Debit chu:CreditLossAllowanceAndWritedownOfInventories
1096 Commission and other service expenses Concept (Monetary) For Period Debit ifrs-full:FeeAndCommissionExpense
1097 Advertising and promotion expenses Concept (Monetary) For Period Debit ifrs-full:AdvertisingExpense
1098 Internet access terminal maintenance expenses Concept (Monetary) For Period Debit chu:InternetAccessTerminalMaintenanceExpenses
1099 Customer retention costs Concept (Monetary) For Period Debit chu:CustomerRetentionCosts
1100 Auditors' remuneration Concept (Monetary) For Period Debit ifrs-full:AuditorsRemuneration
1101 Property management fee Concept (Monetary) For Period Debit ifrs-full:PropertyManagementExpense
1102 Office and administrative expenses Concept (Monetary) For Period Debit ifrs-full:AdministrativeExpense
1103 Transportation expense Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
1104 Miscellaneous taxes and fees Concept (Monetary) For Period Debit ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
1105 Service technical support expenses Concept (Monetary) For Period Debit chu:ServiceTechnicalSupportExpenses
1106 Repairs and maintenance expenses Concept (Monetary) For Period Debit ifrs-full:RepairsAndMaintenanceExpense
1107 Loss on disposal of property, plant and equipment Concept (Monetary) For Period Debit ifrs-full:LossesOnDisposalsOfPropertyPlantAndEquipment
1108 Others Concept (Monetary) For Period Debit ifrs-full:MiscellaneousOtherOperatingExpense
1109 Other operating expenses Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
1110 1115 - Disclosure - Finance Costs - Summary of Finance Costs (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureFinanceCostsSummaryOfFinanceCosts
1111 Disclosure of analysis of income and expense [Table] Table

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1112 Maturity [axis] Axis ifrs-full:MaturityAxis
1113 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1114 Within 5 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1115 Over 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
1116 Disclosure of analysis of income and expense [Line Items] LineItems chu:DisclosureOfAnalysisOfIncomeAndExpenseLineItems
1117 Interest on bank loans repayable Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnBankLoansAndOverdrafts
1118 Interest on corporate bonds, promissory notes and commercial papers repayable Concept (Monetary) For Period Debit chu:InterestExpenseOnCorporateBondsPromissoryNotesAndCommercialPapers
1119 Interest on related party loans repayable within 5 years Concept (Monetary) For Period Debit chu:InterestExpenseOnRelatedPartiesLoan
1120 - Less: Amounts capitalized in CIP Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
1121 Total interest expense Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1122 Net exchange (gain)/loss Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
1123 Others Concept (Monetary) For Period Debit ifrs-full:OtherFinanceCost
1124 Finance Costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1125 1116 - Disclosure - Other Income - Net - Summary of Other Income - Net (Detail) Network

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1126 Implied Table Table

*

*

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1127 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1128 Dividend income from financial assets at fair value through other comprehensive income Concept (Monetary) For Period Credit chu:DividendIncomeForFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1129 Others Concept (Monetary) For Period Credit ifrs-full:MiscellaneousOtherOperatingIncome
1130 Other income - net Concept (Monetary) For Period Credit ifrs-full:OtherIncome
1131 1117 - Disclosure - Taxation - Additional Information (Detail) Network

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*

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1132 Disclosure of income tax expenses [Table] Table

*

*

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1133 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1134 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1135 Hong Kong [member] Member country:HK
1136 PRC [member] Member country:CN
1137 Disclosure of income tax expenses [Line Items] LineItems chu:DisclosureOfIncomeTaxExpensesLineItems
1138 Applicable tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1139 Preferential tax rate Concept (Percent) For Period chu:PreferentialTaxRate
1140 Deductible temporary differences for which no deferred tax asset is recognized Concept (Monetary) As Of ifrs-full:DeductibleTemporaryDifferencesForWhichNoDeferredTaxAssetIsRecognised
1141 1118 - Disclosure - Taxation - Summary of Income Tax Expenses (Detail) Network

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 http://imetrix.edgar-online.com/taxonomy/role/DisclosureTaxationSummaryOfIncomeTaxExpenses
1142 Disclosure of income tax expenses [Table] Table

*

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1144 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1145 Hong Kong [member] Member country:HK
1146 Mainland China and other countries [member] Member chu:MainlandChinaAndOtherCountriesMember
1147 Disclosure of income tax expenses [Line Items] LineItems chu:DisclosureOfIncomeTaxExpensesLineItems
1148 Provision for income tax on the estimated taxable income for the year Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
1149 (Over)/Under-provision in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1150 Total tax expenses excluded deferred taxation Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
1151 Deferred taxation Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
1152 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1153 1119 - Disclosure - Taxation - Summary of Reconciliation Between Actual Income Tax Expense and Accounting Profit (Detail) Network

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1154 Implied Table Table

*

*

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1155 Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
1156 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
1157 Expected income tax expense at PRC statutory tax rate of 25% Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
1158 Impact of different tax rates outside Mainland China Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
1159 Tax effect of preferential tax rate Concept (Monetary) For Period Credit chu:TaxEffectOfPreferentialExpenseTaxRate
1160 Tax effect of non-deductible expenses Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
1161 Tax effect of non-taxable income from share of net profit of joint ventures Concept (Monetary) For Period Debit chu:TaxEffectOfNontaxableIncomeFromShareOfNetProfitOfJointVentures
1162 Tax effect of non-taxable income from share of net loss/(profit) of associates Concept (Monetary) For Period Debit chu:TaxEffectOfNontaxableIncomeFromShareOfNetProfitOfAssociates
1163 (Over)/Under-provision in respect of prior years Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
1164 Tax effect of unused tax losses not recognized, net of utilization Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfTaxLosses
1165 Others Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1166 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1167 1120 - Disclosure - Taxation - Summary of Reconciliation Between Actual Income Tax Expense and Accounting Profit (Parenthetical) (Detail) Network

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1168 Implied Table Table

*

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1169 Reconciliation of accounting profit multiplied by applicable tax rates [abstract] Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
1170 Statutory tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
1171 Preferential tax rate Concept (Percent) For Period chu:PreferentialTaxRate
1172 Deferred tax assets not recognized in respect of tax losses Concept (Monetary) As Of ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1173 Tax losses carried forward years Concept (xbrli:durationItemType) For Period chu:TaxLossesCarryForwardDuration
1174 1121 - Disclosure - Taxation - Summary of Analysis of Deferred Tax Assets and Deferred Tax Liabilities (Detail) Network

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1175 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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*

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1176 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1177 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1178 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1179 Maturity [axis] Axis ifrs-full:MaturityAxis
1180 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1181 More than one year [member] Member ifrs-full:LaterThanOneYearMember
1182 Less than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1183 Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1184 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1185 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1186 Net deferred tax assets after offsetting Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
1187 Net deferred tax liabilities after offsetting Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
1188 1122 - Disclosure - Taxation - Summary of Movement of Net Deferred Tax Assets/(Liabilities) (Detail) Network

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1189 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

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*

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1190 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1191 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1192 Deferred tax assets [member] Member chu:DeferredTaxAssetsMember
1193 Deferred tax liabilities [member] Member chu:DeferredTaxLiabilitiesMember
1194 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1195 Currently stated [member] Member ifrs-full:RestatedMember
1196 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
1197 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
1198 Application of IFRS9 [member] Member chu:ApplicationOfIFRS9Member
1199 Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1200 Net deferred tax assets, Beginning balance Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
1201 Net deferred tax liabilities, Beginning balance Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
1202 - Deferred tax (charged)/ credited to the statements of income Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1203 Deferred tax credited/ (charged) to other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1204 Net deferred tax liabilities, Ending balance Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
1205 Reclassified from current taxes payable Concept (Monetary) For Period Credit chu:IncreaseDecreaseThroughReclassificationDeferredTaxLiabilityAsset
1206 Net deferred tax assets, Ending balance Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
1207 1123 - Disclosure - Taxation - Summary of Movement of Net Deferred Tax Assets/(Liabilities) (Parenthetical) (Detail) Network

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1208 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

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 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1209 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1210 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1211 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
1212 Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1213 Deferred tax (Charged)/Credit to the statements of income Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1214 1124 - Disclosure - Taxation - Summary of Components of Deferred Tax Assets/(Liabilities) (Detail) Network

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1215 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1216 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1217 Currently stated [member] Member ifrs-full:RestatedMember
1218 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
1219 Impact on initial application of IFRS 15 [member] Member ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
1220 Impact on initial application of IFRS 9 (2014) [member] Member chu:IncreaseDecreaseDueToApplicationOfIFRS9Member
1221 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1222 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1223 Credit loss allowance [member] Member ifrs-full:AllowanceForCreditLossesMember
1224 Unrecognized revaluation surplus on prepayments for the leasehold land determined under PRC regulations [member] Member chu:UnrecognizedRevaluationSurplusOnPrepaymentsForTheLeaseholdLandDeterminedUnderPRCRegulationsMember
1225 Deductible tax losses [member] Member ifrs-full:UnusedTaxLossesMember
1226 Accruals of expenses not yet deductible for tax purpose [member] Member chu:AccrualsOfExpensesNotYetDeductibleForTaxPurposeMember
1227 Unrealized income from the transactions with Tower Company [member] Member chu:UnrealizedIncomeFromTheTransactionsWithTowerCompanyMember
1228 Accelerated depreciation of property, plant and equipment [member] Member chu:AcceleratedDepreciationOfPropertyPlantAndEquipmentMember
1229 Gain from Tower Assets disposal [member] Member chu:GainFromTowerAssetsDisposalMember
1230 Contract costs [member] Member chu:ContractCostsMember
1231 Others [member] Member ifrs-full:OtherTemporaryDifferencesMember
1232 Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1233 Beginning balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1234 (Charged)/Credited to the statements of income Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1235 (Charged)/credited to other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1236 Reclassification of current tax payable Concept (Monetary) For Period Credit chu:IncreaseDecreaseThroughReclassificationDeferredTaxLiabilityAsset
1237 Ending balance Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1238 1125 - Disclosure - Taxation - Summary of Temporary Differences (Detail) Network

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 http://imetrix.edgar-online.com/taxonomy/role/DisclosureTaxationSummaryOfTemporaryDifferences
1239 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1240 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1241 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1242 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1243 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1244 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1245 Credit loss allowance [member] Member ifrs-full:AllowanceForCreditLossesMember
1246 Unrecognized revaluation surplus on prepayments for the leasehold land determined under PRC regulations [member] Member chu:UnrecognizedRevaluationSurplusOnPrepaymentsForTheLeaseholdLandDeterminedUnderPRCRegulationsMember
1247 Accruals of expenses not yet deductible for tax purpose [member] Member chu:AccrualsOfExpensesNotYetDeductibleForTaxPurposeMember
1248 Deferred revenue on subscriber points reward program [member] Member chu:DeferredRevenueMember
1249 Unrealized income for the inter-company transactions [member] Member chu:UnrealizedIncomeForTheIntercompanyTransactionsMember
1250 Unrealized income from the transactions with Tower Company [member] Member chu:UnrealizedIncomeFromTheTransactionsWithTowerCompanyMember
1251 Government grants related to assets [member] Member chu:GovernmentGrantsMember
1252 Intangible assets amortization difference [member] Member chu:AmortizationOfIntangibleAssetsMember
1253 Deductible tax losses [member] Member ifrs-full:UnusedTaxLossesMember
1254 Others [member] Member ifrs-full:OtherTemporaryDifferencesMember
1255 Gain from Tower Assets disposal [member] Member chu:GainFromTowerAssetsDisposalMember
1256 Accelerated depreciation of property, plant and equipment [member] Member chu:AcceleratedDepreciationOfPropertyPlantAndEquipmentMember
1257 Contract costs [member] Member chu:ContractCostsMember
1258 Accelerated depreciation for tax purpose [member] Member chu:AcceleratedDepreciationForTaxPurposeMember
1259 Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1260 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1261 Net deferred tax assets Concept (Monetary) As Of Debit ifrs-full:NetDeferredTaxAssets
1262 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1263 Net deferred tax liabilities after offsetting Concept (Monetary) As Of Credit ifrs-full:NetDeferredTaxLiabilities
1264 1126 - Disclosure - Earnings Per Share - Summary of Computation of Basic and Diluted Earnings Per Share (Detail) Network

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1265 Implied Table Table

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1266 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
1267 Income attributable to equity shareholders of the Company used in computing basic/diluted earnings per share Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOwnersOfParent
1268 Weighted average number of ordinary shares outstanding used in computing basic/diluted earnings per share Concept (Shares) For Period ifrs-full:WeightedAverageShares
1269 Basic/Diluted earnings per share (in RMB) Concept (Share) For Period ifrs-full:BasicAndDilutedEarningsLossPerShare
1270 1127 - Disclosure - Earnings Per Share - Summary of Weighted Average Number of Ordinary Shares (Detail) Network

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1271 Earnings per share [table] Table

*

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 ifrs-full:EarningsPerShareTable
1272 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1273 Currently stated [member] Member ifrs-full:RestatedMember
1274 Increase (decrease) due to corrections of prior period errors [member] Member ifrs-full:FinancialEffectOfCorrectionsOfAccountingErrorsMember
1275 Earnings per share [line items] LineItems ifrs-full:EarningsPerShareLineItems
1276 Weighted average number of ordinary shares outstanding beginning balance Concept (Shares) As Of chu:WeightedAverageNumberOfOrdinaryShares
1277 Effect of shares issued Concept (Shares) For Period chu:IssuedSharesEffectOnWeightedAverageShares
1278 Weighted average number of ordinary shares outstanding ending balance Concept (Shares) As Of chu:WeightedAverageNumberOfOrdinaryShares
1279 1128 - Disclosure - Property, Plant and Equipment - Summary of Movements of Property, Plant and Equipment (Detail) Network

*

*

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1280 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
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1283 Buildings [member] Member ifrs-full:BuildingsMember
1284 Telecommunications equipment [member] Member ifrs-full:CommunicationAndNetworkEquipmentMember
1285 Office furniture, fixtures, motor vehicles and other equipment [member] Member chu:OfficeFurnitureFixturesMotorVehiclesAndOtherEquipmentMember
1286 Leasehold improvements [member] Member ifrs-full:LeaseholdImprovementsMember
1287 Construction-in-progress [member] Member ifrs-full:ConstructionInProgressMember
1288 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1289 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1290 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1291 Accumulated depreciation, amortization and impairment [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1292 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1293 Beginning of year Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1294 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
1295 Charge for the year Concept (Monetary) For Period ifrs-full:DepreciationPropertyPlantAndEquipment
1296 Transfer from CIP Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
1297 Transfer to other assets Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughOtherChangesPropertyPlantAndEquipment
1298 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
1299 End of year Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
1300 1129 - Disclosure - Property,Plant and Equipment - Additional Information (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosurePropertyPlantAndEquipmentAdditionalInformation
1301 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
1302 Range [axis] Axis ifrs-full:RangeAxis
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1304 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1305 Top of range [member] Member ifrs-full:TopOfRangeMember
1306 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
1307 Net book value of assets held under finance leases Concept (Monetary) As Of Debit ifrs-full:RecognisedFinanceLeaseAsAssets
1308 Interest expense Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
1309 Capitalized borrowing rate Concept (Percent) For Period ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
1310 Disposal of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
1311 Sales consideration Concept (Monetary) For Period Credit ifrs-full:ConsiderationPaidReceived
1312 Gain (loss) on disposal of property, plant and equipment Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfNoncurrentAssets
1313 1130 - Disclosure - Lease Prepayments - Summary of Movement of Lease Prepayments (Detail) Network

*

*

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1314 Implied Table Table

*

*

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1315 Disclosure Of Lease Prepayments [abstract] Abstract chu:DisclosureOfLeasePrepaymentsAbstract
1316 Beginning of the year Concept (Monetary) As Of Debit ifrs-full:NoncurrentLeasePrepayments
1317 Addition Concept (Monetary) For Period Debit chu:AdditionNoncurrentLeasePrepayments
1318 Amortization Concept (Monetary) For Period Credit chu:AmortizationNoncurrentLeasePrepayments
1319 End of the year Concept (Monetary) As Of Debit ifrs-full:NoncurrentLeasePrepayments
1320 1131 - Disclosure - Goodwill - Additional Information (Detail) Network

*

*

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1321 Implied Table Table

*

*

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1322 Disclosure Of Goodwill [abstract] Abstract chu:DisclosureOfGoodwillAbstract
1323 Pre-tax cash flow projections period Concept (Text/String) For Period ifrs-full:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows
1324 Service revenue annual growth rate Concept (Percent) As Of ifrs-full:DescriptionOfGrowthRateUsedToExtrapolateCashFlowProjections
1325 Discount rate Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1326 Impairment of goodwill Concept (Monetary) For Period ifrs-full:ImpairmentLossRecognisedInProfitOrLossGoodwill
1327 1132 - Disclosure - Investments in Subsidiaries - Summary of Company's Subsidiaries (Detail) Network

*

*

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1328 Disclosure of subsidiaries [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
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1331 China United Network Communications Corporation Limited ("CUCL") [member] Member chu:ChinaUnitedNetworkCommunicationsCorporationLimitedMember
1332 China Unicom Global Limited [member] Member chu:ChinaUnicomGlobalLimitedMember
1333 China Unicom (Hong Kong) Operations Limited [member] Member chu:ChinaUnicomHongKongOperationsLimitedMember
1334 China Unicom (Americas) Operations Limited [member] Member chu:ChinaUnicomAmericasOperationsLimitedMember
1335 China Unicom (Europe) Operations Limited [member] Member chu:ChinaUnicomEuropeOperationsLimitedMember
1336 China Unicom (Japan) Operations Corporation [member] Member chu:ChinaUnicomJapanOperationsCorporationMember
1337 China Unicom (Singapore) Operations Pte Limited [member] Member chu:ChinaUnicomSingaporeOperationsPteLimitedMember
1338 China Unicom (South Africa) Operations (Pty) Limited [member] Member chu:ChinaUnicomSouthAfricaOperationsPtyLimitedMember
1339 China Unicom (MYA) Operations Company Limited [member] Member chu:ChinaUnicomMYAOperationsCompanyLimitedMember
1340 China Unicom (Australia) Operations Pty Limited [member] Member chu:ChinaUnicomAustraliaOperationsPtyLimitedMember
1341 China Unicom (Russia) Operations Limited Liability Company [member] Member chu:ChinaUnicomRussiaOperationsLimitedLiabilityCompanyMember
1342 China Unicom (Brazil) Telecommunications Limited [member] Member chu:ChinaUnicomBrazilTelecommunicationsLimitedMember
1343 China Unicom (Brazil) Holdings Ltda. [member] Member chu:ChinaUnicomBrazilHoldingsLimitedMember
1344 China Unicom Operations (Thailand) Limited [member] Member chu:ChinaUnicomOperationsThailandLimitedMember
1345 China Unicom Operations (Malaysia) Sdn. Bhd [member] Member chu:ChinaUnicomOperationsMalaysiaSdnBhdMember
1346 China Unicom Operations Korea Co., Ltd [member] Member chu:ChinaUnicomOperationsKoreaCompanyLimitedMember
1347 China Unicom (Vietnam) Operations Company Limited [member] Member chu:ChinaUnicomVietnamOperationsCompanyLimitedMember
1348 China Unicom Operations (Cambodia) Operations Co. Ltd [member] Member chu:ChinaUnicomOperationsCambodiaOperationsCoLtdMember
1349 Unicom Vsens Telecommunications Company Limited [member] Member chu:UnicomVsensTelecommunicationsCompanyLimitedMember
1350 China Unicom System Integration Limited Corporation [member] Member chu:ChinaUnicomSystemIntegrationLimitedCorporationMember
1351 China Unicom Online Information Technology Company Limited [member] Member chu:ChinaUnicomOnlineInformationTechnologyCompanyLimitedMember
1352 Beijing Telecom Planning and Designing Institute Company Limited [member] Member chu:BeijingTelecomPlanningAndDesigningInstituteCompanyLimitedMember
1353 China Information Technology Designing & Consulting Institute Company Limited [member] Member chu:ChinaInformationTechnologyDesigningAndConsultingInstituteCompanyLimitedMember
1354 China Unicom Information Navigation Company Limited [member] Member chu:ChinaUnicomInformationNavigationCompanyLimitedMember
1355 Huaxia P&T Project Consultation and Management Company Limited [member] Member chu:HuaxiaPAndTProjectConsultationAndManagementCompanyLimitedMember
1356 Zhengzhou Kaicheng Industrial Company Limited [member] Member chu:ZhengzhouKaichengIndustrialCompanyLimitedMember
1357 Unicompay Company Limited [member] Member chu:UnicompayCompanyLimitedMember
1358 Beijing Wo Digital Media Advertising Co., Ltd [member] Member chu:BeijingWoDigitalMediaAdvertisingCoLtdMember
1359 Unicom Horizon Mobile Communications Company Limited (Unicom Horizon) [member] Member chu:UnicomHorizonMobileCommunicationsCompanyLimitedMember
1360 Unicom Cloud Data Company Limited [member] Member chu:UnicomCloudDataCompanyLimitedMember
1361 Unicom Innovation Investment Company Limited [member] Member chu:UnicomInnovationInvestmentCompanyLimitedMember
1362 Xiaowo Technology Co. Ltd [member] Member chu:XiaowoTechnologyCoLtdMember
1363 China Unicom Smart Connection Technology Company Limited [member] Member chu:ChinaUnicomSmartConnectionTechnologyCompanyLimitedMember
1364 Unicom Intelligent Network Ruixing Technology (Beijing) Co., Ltd.[member] Member chu:UnicomIntelligentNetworkRuixingTechnologyBeijingCoLtdMember
1365 Unicom Intelligent Vehicle Technology (Shanghai) Co., Ltd. Member chu:UnicomIntelligentVehicleTechnologyShanghaiCoLtdMember
1366 China Unicom Finance Company Limited [member] Member chu:ChinaUnicomFinanceCompanyLimitedMember
1367 China Unicom Innovation Investment Company (Shenzhen) Limited [member] Member chu:ChinaUnicomInnovationInvestmentCompanyShenzhenLimitedMember
1368 China Unicom Innovation Investment Company (Guizhou) Limited [member] Member chu:ChinaUnicomInnovationInvestmentCompanyGuizhouLimitedMember
1369 China Unicom Innovation Investment (Shenzhen) Investment Center [member] Member chu:ChinaUnicomInnovationInvestmentShenzhenInvestmentCenterMember
1370 China Unicom Big Data Company Limited [member] Member chu:ChinaUnicomBigDataCompanyLimitedMember
1371 Liantong Travel Service Beijing Company Limited [member] Member chu:LiantongTravelServiceBeijingCompanyLimitedMember
1372 China Unicom (Guangdong Branch) Intenet Industry Limited [member] Member chu:ChinaUnicomGuangdongBranchIntenetIndustryLimitedMember
1373 China Unicom (Zhejiang) Industry Internet Company Limited [member] Member chu:ChinaUnicomZhejiangIndustryInternetCompanyLimitedMember
1374 China Unicom (ShanDong) Industrial Internet Company Limited [member] Member chu:ChinaUnicomShandongIndustrialInternetCompanyLimitedMember
1375 China Unicom (Fujian) Industrial Internet Company Limited [member] Member chu:ChinaUnicomFujianIndustrialInternetCompanyLimitedMember
1376 China Unicom (Shanxi) Industrial Internet Company Limited [member] Member chu:ChinaUnicomShanxiIndustrialInternetCompanyLimitedMember
1377 China Unicom Xiongan Industrial Internet Company Limited [member] Member chu:ChinaUnicomXionganIndustrialInternetCompanyLimitedMember
1378 China Unicom (sichuan) Industrial Internet Company Limited [member] Member chu:ChinaUnicomSichuanIndustrialInternetCompanyLimitedMember
1379 China Unicom Liaoning Industrial Internet Company Limited [member] Member chu:ChinaUnicomLiaoningIndustrialInternetCompanyLimitedMember
1380 China Unicom Shaanxi Industrial Internet Company Limited [member] Member chu:ChinaUnicomShaanxiIndustrialInterneTcompanyLimitedMember
1381 China Unicom Jiangsu Industrial Internet Company Limited [member] Member chu:ChinaUnicomJiangsuIndustrialInternetCompanyLimitedMember
1382 China Unicom (Shanghai) Industrial Internet Company Limited [member] Member chu:ChinaUnicomShanghaiIndustrialInternetCompanyLimitedMember
1383 China Unicom (Heilongjiang) Industrial Internet Company Limited [member] Member chu:ChinaUnicomHeilongjiangIndustrialInternetCompanyLimitedMember
1384 China Unicom Video Technology Co., Ltd. [member] Member chu:ChinaUnicomVideoTechnologyCoLtdMember
1385 China Unicom Internet of Things Corporation Limited [member] Member chu:ChinaUnicomInternetOfThingsCorporationLimitedMember
1386 China Unicom High-tech Big Data Artificial Intelligence Technology (Chengdu) Co., Ltd [member] Member chu:ChinaUnicomHightechBigDataArtificialIntelligenceTechnologyMember
1387 China Unicom iRead Science and Culture, Co., Ltd. [member] Member chu:ChinaUnicomIreadScienceCultureCoLtdMember
1388 China Unicom WO Music & Culture Co., Ltd. [member] Member chu:ChinaUnicomWoMusicCultureCoLtdMember
1389 China Unicom Leasing Co., Ltd [member] Member chu:ChinaUnicomLeasingCoLtdMember
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1392 Direct [member] Member chu:DirectlyHeldByEntityMember
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1394 Disclosure of subsidiaries [Line Items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
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1399 Percentage of equity interests held Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1400 Issued share capital, value Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1401 Issued share capital, shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1402 Issued share capital, par value Concept (Share) As Of ifrs-full:ParValuePerShare
1403 Principal activities and place of operation Concept (Text/String) For Period chu:PrincipalActivitiesAndPlaceOfOperation
1404 1133 - Disclosure - Interest in Associates - Summary of Share of Net Assets in Associates (Detail) Network

*

*

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1405 Implied Table Table

*

*

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1406 Disclosure of associates [abstract] Abstract ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesAbstract
1407 Share of net assets Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1408 1134 - Disclosure - Interest in Associates - Summary of Particulars of Material Associate (Detail) Network

*

*

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1409 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
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1411 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1412 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
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1414 Name Concept (Text/String) For Period ifrs-full:NameOfAssociate
1415 Form of business structure Concept (Text/String) For Period ifrs-full:LegalFormOfEntity
1416 Place of incorporation Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOrResidenceOfAssociate
1417 Place of business Concept (Text/String) For Period ifrs-full:PrincipalPlaceOfBusinessOfAssociate
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1419 Paid up capital Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1420 Principal activities Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
1421 1135 - Disclosure - Interest in Associates - Additional Informations (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureInterestInAssociatesAdditionalInformations
1422 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1423 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1424 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1425 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
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1427 Share of net profit of associates under equity method Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
1428 Group's effective interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1429 Realization of unrealized profit Concept (Monetary) For Period Credit chu:RealizedUnrealizedGrossProfitOnSalesToAssociates
1430 1136 - Disclosure - Interest in Associates - Summary of Financial Information of Material Associate (Detail) Network

*

*

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1431 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
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1434 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
1435 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1436 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1437 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1438 Adjustment for the remaining balance of the deferred gain from the Group's Tower Assets Disposal [member] Member chu:DeferredGainsMember
1439 Disclosure of associates [Line Items] LineItems ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1440 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
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1442 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
1443 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
1444 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
1445 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1446 Income for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1447 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
1448 Reconciled to the Group's interest in the associate: Abstract chu:ReconciliationOfInterestInAssociatesAbstract
1449 Net assets of the associate Concept (Monetary) As Of Debit chu:NetAssetsLiabilitiesOfAssociate
1450 The Group's effective interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInAssociate
1451 Carrying amount Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1452 1137 - Disclosure - Interest in Associates - Summary of Fair Values of Interests in Associates Based on Quoted Market Prices Without any Deduction for Transaction Costs (Detail) Network

*

*

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1453 Disclosure of associates [table] Table

*

*

 ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1454 Associates [axis] Axis ifrs-full:SignificantInvestmentsInAssociatesAxis
1455 Entity's total for associates [member] Member ifrs-full:EntitysTotalForAssociatesMember
1456 Tower Company [member] Member chu:TowerCompanyMember
1457 Interest in listed associate [member] Member chu:InterestInListedAssociateMember
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1459 Carrying amount Concept (Monetary) As Of Debit ifrs-full:InvestmentsInAssociates
1460 Fair value Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentsInAssociatesWherePriceQuotationsPublished
1461 1138 - Disclosure - Interest in Joint Ventures - Summary of Interests In Joint Venture (Detail) Network

*

*

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1462 Implied Table Table

*

*

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1463 Disclosure of joint ventures [abstract] Abstract ifrs-full:DisclosureOfJointVenturesAbstract
1464 Share of net assets Concept (Monetary) As Of Debit chu:ShareOfNetAssetsOfJointVenture
1465 1139 - Disclosure - Interest in Joint Ventures - Additional Information (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureInterestInJointVenturesAdditionalInformation
1466 Implied Table Table

*

*

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1467 Disclosure of joint ventures [abstract] Abstract ifrs-full:DisclosureOfJointVenturesAbstract
1468 Available quoted market price Concept (Monetary) As Of Debit ifrs-full:FairValueOfInvestmentInJointVenturesWherePriceQuotationsPublished
1469 1140 - Disclosure - Interest in Joint Ventures - Summary of Company's Interest in Joint Venture (Detail) Network

*

*

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1470 Disclosure of joint ventures [table] Table

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*

 ifrs-full:DisclosureOfJointVenturesTable
1471 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1472 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1473 Merchants Union Consumer Finance Company Limited [member] Member chu:MerchantsUnionConsumerFinanceCompanyLimitedMember
1474 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
1475 Form of business structure Concept (Text/String) For Period ifrs-full:PrincipalPlaceOfBusinessOfJointVenture
1476 Place of incorporation and business Concept (Text/String) For Period ifrs-full:CountryOfIncorporationOfJointVenture
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1478 Paid up capital Concept (Monetary) As Of Credit ifrs-full:AdditionalPaidinCapital
1479 Principal activities Concept (Text/String) For Period chu:PrincipalActivitiesAndPlaceOfOperation
1480 1141 - Disclosure - Interest in Joint Ventures - Summary of Financial Information of Material Joint Venture (Detail) Network

*

*

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1481 Disclosure of joint ventures [table] Table

*

*

 ifrs-full:DisclosureOfJointVenturesTable
1482 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
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1484 Merchants Union Consumer Finance Company Limited [member] Member chu:MerchantsUnionConsumerFinanceCompanyLimitedMember
1485 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
1486 Assets Concept (Monetary) As Of Debit ifrs-full:Assets
1487 Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
1488 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
1489 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
1490 Net income for the year Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1491 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
1492 Interest income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1493 Interest expense Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1494 Income tax expense Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
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1497 The Group's effective interest Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
1498 Carrying amount in the consolidated financial statements Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfContinuingOperationsOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1499 1142 - Disclosure - Contract Assets and Contract Liabilities - Summary of Contract Assets (Detail) Network

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1500 Disclosure of contract assets [table] Table

*

*

 chu:DisclosureOfContractAssetsTable
1501 Classes of assets [axis] Axis ifrs-full:ClassesOfAssetsAxis
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1503 Receivables for sales of mobile handsets net of allowance [member] Member chu:ReceivablesForSalesOfMobileHandsetsNetOfAllowanceMember
1504 Less current portion [member] Member chu:ContractsWithCustomersLessCurrentPortionMember
1505 Disclosure of contract assets [line items] LineItems chu:DisclosureOfContractAssetsLineItems
1506 Contract assets Concept (Monetary) As Of Debit ifrs-full:ContractAssets
1507 1143 - Disclosure - Contract Assets and Contract Liabilities - Summary of Contract Liabilities (Detail) Network

*

*

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1508 Disclosure of contract liabilities [table] Table

*

*

 chu:DisclosureOfContractLiabilitiesTable
1509 Classes of liabilities [axis] Axis ifrs-full:ClassesOfLiabilitiesAxis
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1511 Advances received from customers for future services [member] Member chu:AdvancesReceivedFromCustomersForFutureServicesMember
1512 Other contract liabilities [member] Member chu:OtherContractLiabilitiesMember
1513 Disclosure of contract liabilities [line items] LineItems chu:DisclosureOfContractLiabilitiesLineItems
1514 Contract liabilities Concept (Monetary) As Of Credit ifrs-full:ContractLiabilities
1515 1144 - Disclosure - Contract Assets and Contract Liabilities - Summary of Contract Liabilities (Parenthetical) (Detail) Network

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*

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1516 Implied Table Table

*

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1517 Contract liabilities [abstract] Abstract ifrs-full:ContractLiabilitiesAbstract
1518 Contract liability recognized as revenue Concept (Percent) For Period chu:PercentageOfContractLiabilityRecognizedAsRevenue
1519 1145 - Disclosure - Contract Costs - Schedule of Contract Costs (Detail) Network

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1520 Disclosure of detailed information about contract costs [table] Table

*

*

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1521 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
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1523 Direct incremental costs of broadband and IPTV service [member] Member chu:DirectIncrementalCostsOfBroadbandAndIPTVServiceMember
1524 Sales commissions [member] Member chu:SalesCommissionsMember
1525 Disclosure of detailed information about contract costs [line items] LineItems chu:DisclosureOfDetailedInformationAboutContractCostsLineItems
1526 Contract costs Concept (Monetary) As Of Debit chu:ContractCostsNoncurrent
1527 1146 - Disclosure - Contract Costs - Schedule of Contract Costs (Parenthetical) (Detail) Network

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1528 Disclosure of detailed information about contract costs [table] Table

*

*

 chu:DisclosureOfDetailedInformationAboutContractCostsTable
1529 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1530 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1531 Sales commissions [member] Member chu:SalesCommissionsMember
1532 Direct incremental costs for activating broadband and IPTV subscribers [member] Member chu:DirectIncrementalCostsOfInstallingBroadbandAndIPTVMember
1533 Disclosure of detailed information about contract costs [line items] LineItems chu:DisclosureOfDetailedInformationAboutContractCostsLineItems
1534 Capitalized direct incremental costs for activating broadband and IPTV subscribers expected to recovered after more than one year Concept (Monetary) As Of Debit chu:DirectIncrementalCostsForActivatingBroadbandAndIptvSubscribersExpectedToBeRecoveredAfterMoreThanOneYear
1535 Capitalized direct incremental costs for activating broadband and IPTV subscribers recognized in profit or loss Concept (Monetary) For Period Debit chu:CapitalizedDirectIncrementalCostsForActivatingBroadbandAndIptvSubscribersRecognizedInProfitOrLoss
1536 Capitalized sales commissions recognized in profit or loss Concept (Monetary) For Period Debit chu:CapitalizedSalesCommissionsRecognizedInProfitOrLoss
1537 Capitalized sales commissions expected to recovered after more than one year Concept (Monetary) For Period Debit chu:CapitalizedSalesCommissionsExpectedToRecoveredAfterMoreThanOneYear
1538 1147 - Disclosure - Financial Assets at Fair Value through Other Comprehensive Income - Summary of Financial Assets at Fair Value through Other Comprehensive Income (Detail) Network

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*

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1539 Disclosure of financial assets [table] Table

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*

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1542 Listed in the PRC [member] Member chu:ListedInPeoplesRepublicOfChinaMember
1543 Listed outside the PRC [member] Member chu:ListedOutsidePeoplesRepublicOfChinaMember
1544 Unlisted [member] Member chu:UnlistedMember
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1546 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
1547 1148 - Disclosure - Financial Assets at Fair Value through Other Comprehensive Income - Additional Information (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureFinancialAssetsAtFairValueThroughOtherComprehensiveIncomeAdditionalInformation
1548 Implied Table Table

*

*

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1549 Financial assets at fair value through other comprehensive income [abstract] Abstract ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeAbstract
1550 Decrease in fair value of financial assets through other comprehensive income Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1551 Decrease in fair value of financial assets through other comprehensive income, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1552 1149 - Disclosure - Other Assets - Summary of Other Assets (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureOtherAssetsSummaryOfOtherAssets
1553 Implied Table Table

*

*

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1554 Miscellaneous non-current assets [abstract] Abstract ifrs-full:MiscellaneousNoncurrentAssetsAbstract
1555 Intangible assets Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1556 Prepaid rental for premises, transmission lines and electricity cables Concept (Monetary) As Of Debit ifrs-full:NoncurrentPrepayments
1557 Direct incremental costs for activating broadband and IPTV subscribers Concept (Monetary) As Of Debit chu:DirectIncrementalCostsForActivatingBroadbandAndIptvSubscribers
1558 Receivables for sales of mobile handsets, net of allowance Concept (Monetary) As Of Debit chu:ReceivablesForSalesOfMobileHandsetsNetOfAllowance
1559 VAT recoverable Concept (Monetary) As Of Debit ifrs-full:NoncurrentValueAddedTaxReceivables
1560 Others Concept (Monetary) As Of Debit chu:MiscellaneousOtherNoncurrentAssets
1561 Total Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
1562 1150 - Disclosure - Other Assets - Summary of Other Assets (Parenthetical) (Detail) Network

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 http://imetrix.edgar-online.com/taxonomy/role/DisclosureOtherAssetsSummaryOfOtherAssetsParenthetical
1563 Disclosure of detailed information about intangible assets [table] Table

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1566 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1567 Accumulated depreciation, amortization and impairment [member] Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
1568 Classes of intangible assets other than goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1569 Intangible assets other than goodwill [member] Member ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1570 Computer software [member] Member ifrs-full:ComputerSoftwareMember
1571 Others [member] Member ifrs-full:OtherIntangibleAssetsMember
1572 Disclosure of detailed information about intangible assets [Line Items] LineItems ifrs-full:DisclosureOfIntangibleAssetsLineItems
1573 Beginning balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1574 Additions Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsIntangibleAssetsOtherThanGoodwill
1575 Amortization charge for the year Concept (Monetary) For Period ifrs-full:AmortisationIntangibleAssetsOtherThanGoodwill
1576 Transfer from CIP Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersIntangibleAssetsOtherThanGoodwill
1577 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsIntangibleAssetsOtherThanGoodwill
1578 Ending balance Concept (Monetary) As Of Debit ifrs-full:IntangibleAssetsOtherThanGoodwill
1579 1151 - Disclosure - Inventories and Consumables - Summary of Inventories and Consumables (Detail) Network

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*

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1580 Implied Table Table

*

*

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1582 Handsets and other telecommunication products Concept (Monetary) As Of Debit chu:HandsetsAndOtherCustomerEndProducts
1583 Consumables Concept (Monetary) As Of Debit ifrs-full:CurrentMaterialsAndSuppliesToBeConsumedInProductionProcessOrRenderingServices
1584 Others Concept (Monetary) As Of Debit ifrs-full:OtherInventories
1585 Total Concept (Monetary) As Of Debit ifrs-full:Inventories
1586 1152 - Disclosure - Accounts Receivable - Summary of Accounts Receivable (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureAccountsReceivableSummaryOfAccountsReceivable
1587 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
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1589 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1590 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1591 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1592 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1593 Accounts receivables [member] Member ifrs-full:TradeReceivablesMember
1594 Disclosure of financial assets [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1595 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1596 Less Credit loss allowance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1597 1153 - Disclosure - Accounts Receivable - Additional Information (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureAccountsReceivableAdditionalInformation
1598 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
1599 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1600 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1601 Neither past due nor impaired [member] Member ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
1602 Past due but not impaired [member] Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
1603 Disclosure of financial assets [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1604 Accounts receivable Concept (Monetary) As Of Debit chu:GrossCarryingAmountOfAccountsReceivableFromContractsWithCustomers
1605 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1606 1154 - Disclosure - Accounts Receivable - Summary of Aging Analysis of Accounts Receivable (Detail) Network

*

*

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1607 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
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1609 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1610 Within one month [member] Member ifrs-full:NotLaterThanOneMonthMember
1611 More than one month to three months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
1612 More than three months to one year [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
1613 More than one year [member] Member ifrs-full:LaterThanOneYearMember
1614 Disclosure of financial assets [Line Items] LineItems ifrs-full:DisclosureOfFinancialAssetsLineItems
1615 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1616 1155 - Disclosure - Accounts Receivable - Summary of Information about Groups Exposure to Credit Risk and Expected Credit Loss for Account Receivables (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureAccountsReceivableSummaryOfInformationAboutGroupsExposureToCreditRiskAndExpectedCreditLossForAccountReceivables
1617 Disclosure of credit risk exposure [table] Table

*

*

 ifrs-full:DisclosureOfCreditRiskExposureTable
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1620 Carrying amount [member] Member ifrs-full:GrossCarryingAmountMember
1621 Method of assessment of expected credit losses [axis] Axis ifrs-full:MethodOfAssessmentOfExpectedCreditLossesAxis
1622 Method of assessment of expected credit losses [member] Member ifrs-full:MethodOfAssessmentOfExpectedCreditLossesMember
1623 Individual subscribers and general corporate customers [member] Member chu:IndividualSubscribersAndGeneralCorporateCustomersMember
1624 Major corporate customers [member] Member chu:MajorCorporateCustomersMember
1625 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1626 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1627 Accounts receivables [member] Member ifrs-full:TradeReceivablesMember
1628 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1629 Past due status [member] Member ifrs-full:PastDueStatusMember
1630 Current (not past due) [member] Member ifrs-full:CurrentMember
1631 1 - 90 days past due [member] Member chu:OneToNinetyDaysMember
1632 91 - 180 days past due [member] Member chu:NinetyOneToOneEightyDaysMember
1633 More than 180 days past due [member] Member chu:MoreThanOneEightyDaysMember
1634 Within 1 year past due [member] Member chu:WithInOneYearMember
1635 1 - 2 years past due [member] Member chu:OneToTwoYearsPastDueMember
1636 2 - 3 years past due [member] Member chu:TwoToThreeYearsPastDueMember
1637 More than 3 years past due [member] Member chu:MoreThanThreeYearsPastDueMember
1638 Disclosure of credit risk exposure [line items] LineItems ifrs-full:DisclosureOfCreditRiskExposureLineItems
1639 Expected loss rate Concept (Percent) As Of ifrs-full:ExpectedCreditLossRate
1640 Gross carrying amount Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1641 Loss allowance Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1642 1156 - Disclosure - Accounts Receivable - Summary of Receivables Past Due but not Impaired (Detail) Network

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*

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1643 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1644 Impairment of financial assets [axis] Axis ifrs-full:ImpairmentOfFinancialAssetsAxis
1645 Entity's total for impairment of financial assets [member] Member ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
1646 Past due but not impaired [member] Member ifrs-full:FinancialAssetsPastDueButNotImpairedMember
1647 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1648 Past due status [member] Member ifrs-full:PastDueStatusMember
1649 More than one month to three months [member] Member ifrs-full:LaterThanOneMonthAndNotLaterThanThreeMonthsMember
1650 More than three months to one year [member] Member ifrs-full:LaterThanThreeMonthsAndNotLaterThanOneYearMember
1651 More than one year [member] Member ifrs-full:LaterThanOneYearMember
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1653 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTradeReceivables
1654 1157 - Disclosure - Accounts Receivable - Summary of Movement in Allowance for Doubtful Debts (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureAccountsReceivableSummaryOfMovementInAllowanceForDoubtfulDebts
1655 Disclosure of financial assets [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsTable
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1660 Balance, beginning of year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
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1662 Allowance for the year Concept (Monetary) For Period ifrs-full:AdditionalAllowanceRecognisedInProfitOrLossAllowanceAccountForCreditLossesOfFinancialAssets
1663 Written-off during the year Concept (Monetary) For Period Debit ifrs-full:UtilisationAllowanceAccountForCreditLossesOfFinancialAssets
1664 Balance, end of year Concept (Monetary) As Of Credit ifrs-full:AllowanceAccountForCreditLossesOfFinancialAssets
1665 1158 - Disclosure - Prepayments and Other Current Assets - Summary of Prepayments and Other Current Assets (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosurePrepaymentsAndOtherCurrentAssetsSummaryOfPrepaymentsAndOtherCurrentAssets
1666 Implied Table Table

*

*

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1667 Current prepayments and other current assets [abstract] Abstract chu:CurrentPrepaymentsAndOtherCurrentAssetsAbstract
1668 Receivables for the sales of mobile handsets, net of allowance Concept (Monetary) As Of Debit chu:CurrentReceivablesForSalesOfMobileHandsetsNetOfAllowance
1669 Prepaid rental Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
1670 Deposits and prepayments Concept (Monetary) As Of Debit chu:CurrentDepositsAndPrepayments
1671 Advances to employees Concept (Monetary) As Of Debit chu:CurrentAdvancesToEmployees
1672 VAT recoverable Concept (Monetary) As Of Debit ifrs-full:CurrentValueAddedTaxReceivables
1673 Prepaid enterprise income tax Concept (Monetary) As Of Debit chu:CurrentReceivablesFromIncomeTaxes
1674 Others Concept (Monetary) As Of Debit ifrs-full:OtherCurrentAssets
1675 Total Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
1676 1159 - Disclosure - Short-term Bank Deposits and Restricted Deposits - Summary of Short-term Bank Deposits and Restricted Deposits (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureShorttermBankDepositsAndRestrictedDepositsSummaryOfShorttermBankDepositsAndRestrictedDeposits
1677 Implied Table Table

*

*

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1678 Miscellaneous current assets [abstract] Abstract ifrs-full:MiscellaneousCurrentAssetsAbstract
1679 Bank deposits with maturity exceeding three months Concept (Monetary) As Of Debit ifrs-full:ShorttermDepositsNotClassifiedAsCashEquivalents
1680 Statutory reserve deposits Concept (Monetary) As Of Credit chu:IFRSTranslationReserve
1681 Restricted deposits Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
1682 Short-term bank deposits and restricted deposits Concept (Monetary) As Of Debit chu:ShorttermBankDepositsAndRestrictedDeposits
1683 1160 - Disclosure - Cash and Cash Equivalents and Other Cash Flow Information - Summary of Cash and Cash Equivalents (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureCashAndCashEquivalentsAndOtherCashFlowInformationSummaryOfCashAndCashEquivalents
1684 Implied Table Table

*

*

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1685 Cash and cash equivalents [abstract] Abstract ifrs-full:CashAndCashEquivalentsAbstract
1686 Cash at bank and in hand Concept (Monetary) As Of Debit ifrs-full:Cash
1687 1161 - Disclosure - Cash and Cash Equivalents and Other Cash Flow Information - Summary of Reconciliation of Liabilities Arising from Financing Activities (Detail) Network

*

*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureCashAndCashEquivalentsAndOtherCashFlowInformationSummaryOfReconciliationOfLiabilitiesArisingFromFinancingActivities
1688 Disclosure of reconciliation of liabilities arising from financing activities [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfLiabilitiesArisingFromFinancingActivitiesTable
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1694 Promissory notes [member] Member chu:PromissoryNotesMember
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1696 Finance lease [Member] Member chu:FinanceLeaseMember
1697 Other borrowings [Member] Member chu:OtherBorrowingsMember
1698 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1699 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1700 China United Network Communications Group Company Limited and its subsidiaries [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedAndItsSubsidiariesMember
1701 Smart Steps Digital Technology Co., Ltd [member] Member chu:SmartStepsDigitalTechnologyCoLtdMember
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1718 Payment of issuing expense for promissory notes Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
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1721 Exchange adjustments Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughEffectOfChangesInForeignExchangeRatesLiabilitiesArisingFromFinancingActivities
1722 Other changes Abstract chu:OtherChangesClassifiedAsFinancingActivitiesAbstract
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1725 Interest expenses Concept (Monetary) For Period Debit chu:AdjustmentsForIncreaseDecreaseInInterestPayable
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1727 Ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilitiesArisingFromFinancingActivities
1728 1162 - Disclosure - Share Capital - Summary of Share Capital (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureShareCapitalSummaryOfShareCapital
1729 Implied Table Table

*

*

 implied:Table
1730 Disclosure of classes of share capital [abstract] Abstract ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
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1732 Shares issued Concept (Shares) For Period ifrs-full:IncreaseDecreaseInNumberOfOrdinarySharesIssued
1733 Number of shares, Ending balance Concept (Shares) As Of ifrs-full:NumberOfSharesIssuedAndFullyPaid
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1737 1163 - Disclosure - Share Capital - Additional Information (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureShareCapitalAdditionalInformation
1738 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
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1740 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1741 China Unicom (BVI) Limited [member] Member chu:ChinaUnicomBVILimitedMember
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1743 Shares issued Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
1744 Cash consideration Concept (Monetary) For Period Debit ifrs-full:ProceedsFromIssuingShares
1745 1164 - Disclosure - Reserves - Additional Information (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureReservesAdditionalInformation
1746 Disclosure of reserves within equity [table] Table

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*

 ifrs-full:DisclosureOfReservesWithinEquityTable
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1760 Minimum percentage of general risk reserve Concept (Percent) For Period chu:MinimumGeneralRiskReservePercentage
1761 1165 - Disclosure - Dividends - Additional Information (Detail) Network

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*

 http://imetrix.edgar-online.com/taxonomy/role/DisclosureDividendsAdditionalInformation
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*

*

 chu:DisclosureOfDividendsTable
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1769 Dividends Proposed [member] Member chu:DividendsProposedMember
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1771 Approval of a final dividend, per ordinary share Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
1772 Approval of a final dividend, total Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
1773 Enterprise income tax rate on dividends declared Concept (Percent) For Period chu:EnterpriseIncomeTaxRateOnDividendsDeclared
1774 1166 - Disclosure - Dividends - Summary of Proposed Final Dividend (Detail) Network

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1775 Disclosure of Proposed Dividend [table] Table

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1776 Dividend [axis] Axis chu:DividendAxis
1777 Dividend [domain] Member chu:DividendDomain
1778 Dividend for fiscal year twenty eighteen [member] Member chu:FiscalYearTwentyEighteenMember
1779 Disclosure of proposed dividend [line items] LineItems chu:DisclosureOfProposedDividendLineItems
1780 Proposed final dividend Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
1781 1167 - Disclosure - Dividends - Summary of Proposed Final Dividend (Parenthetical) (Detail) Network

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1782 Disclosure of Proposed Dividend [table] Table

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1783 Dividend [axis] Axis chu:DividendAxis
1784 Dividend [domain] Member chu:DividendDomain
1785 Dividend for fiscal year twenty eighteen [member] Member chu:FiscalYearTwentyEighteenMember
1786 Disclosure of proposed dividend [line items] LineItems chu:DisclosureOfProposedDividendLineItems
1787 Approval of a final dividend, per ordinary share Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
1788 1168 - Disclosure - Long-Term Bank Loans - Summary of Long-Term Bank Loans (Detail) Network

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1789 Disclosure of detailed information about borrowings [table] Table

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1790 Currency [Axis] Axis srt:CurrencyAxis
1791 All Currencies [Domain] Member currency:AllCurrenciesDomain
1792 RMB [member] Member currency:CNY
1793 US dollars [member] Member currency:USD
1794 Euro [member] Member currency:EUR
1795 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1796 Long-term bank loans Concept (Monetary) As Of Credit ifrs-full:LoansReceived
1797 Less: Current portion Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1798 Long-term bank loans, noncurrent Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentLoansReceived
1799 1169 - Disclosure - Long-Term Bank Loans - Summary of Long-Term Bank Loans (Parenthetical) (Detail) Network

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1800 Disclosure of detailed information about borrowings [table] Table

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1801 Currency [Axis] Axis srt:CurrencyAxis
1802 All Currencies [Domain] Member currency:AllCurrenciesDomain
1803 RMB [member] Member currency:CNY
1804 US dollars [member] Member currency:USD
1805 Euro [member] Member currency:EUR
1806 Range [axis] Axis ifrs-full:RangeAxis
1807 Ranges [member] Member ifrs-full:RangesMember
1808 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1809 Top of range [member] Member ifrs-full:TopOfRangeMember
1810 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1811 Bonds, bearing interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1812 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1813 1170 - Disclosure - Long-Term Bank Loans - Additional Information (Detail) Network

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1814 Disclosure of detailed information about borrowings [table] Table

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1815 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1816 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1817 Guaranteed by third parties [member] Member chu:GuaranteedByThirdPartiesMember
1818 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1819 Long-term bank loans Concept (Monetary) As Of Credit ifrs-full:LoansReceived
1820 1171 - Disclosure - Long-Term Bank Loans - Summary of Repayment Schedule Of Long-Term Bank Loans (Detail) Network

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1821 Disclosure of detailed information about borrowings [table] Table

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1822 Maturity [axis] Axis ifrs-full:MaturityAxis
1823 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1824 Less than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1825 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1826 Between 2 and 5 years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
1827 Over 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
1828 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1829 Long-term bank loans Concept (Monetary) As Of Credit ifrs-full:LoansReceived
1830 Less: Portion classified as current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
1831 Long-term bank loans Concept (Monetary) As Of Credit ifrs-full:NoncurrentPortionOfNoncurrentLoansReceived
1832 1172 - Disclosure - Promissory Notes - Additional Information (Detail) Network

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1833 Disclosure of detailed information about borrowings [table] Table

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1834 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1835 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1836 China United Network Communications Corporation Limited ("CUCL") [member] Member chu:ChinaUnitedNetworkCommunicationsCorporationLimitedMember
1837 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1838 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1839 Promissory notes [member] Member chu:PromissoryNotesMember
1840 Range [axis] Axis ifrs-full:RangeAxis
1841 Ranges [member] Member ifrs-full:RangesMember
1842 Tranche one [member] Member chu:TrancheOneMember
1843 Tranche two [member] Member chu:TrancheTwoMember
1844 Tranche three [member] Member chu:TrancheThreeMember
1845 Tranche four [member] Member chu:TrancheFourMember
1846 Tranche five [member] Member chu:TrancheFiveMember
1847 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1848 Nominal amount of notes Concept (Monetary) As Of Credit ifrs-full:NotesAndDebenturesIssued
1849 Notes maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1850 Notes interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1851 1173 - Disclosure - Corporate Bonds - Additional Information (Detail) Network

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1852 Disclosure of detailed information about borrowings [table] Table

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1853 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1854 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1855 3-year corporate bonds [member] Member chu:ThreeYearCorporateBondsMember
1856 5-year corporate bond [member] Member chu:FiveYearCorporateBondMember
1857 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1858 Bonds issued Concept (Monetary) As Of Credit ifrs-full:BondsIssued
1859 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1860 Bonds, bearing interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1861 1174 - Disclosure - Deferred Revenue - Summary of Deferred Revenue (Detail) Network

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1862 Disclosure Of Deferred Revenue [table] Table

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1863 Revenue Segment [axis] Axis chu:RevenueSegmentAxis
1864 Revenue Segment [domain] Member chu:RevenueSegmentDomain
1865 Subscriber points [member] Member chu:SubscriberPointsMember
1866 Government grants related to assets [member] Member chu:GovernmentGrantsMember
1867 Other deferred revenue additions [member] Member chu:OtherDeferredRevenueAdditionsMember
1868 Usage of subscriber points [member] Member chu:UsageOfSubscriberPointsMember
1869 Recognition of government grants in profit or loss and other reductions [member] Member chu:RecognitionOfGovernmentGrantsInProfitOrLossAndOtherReductionsMember
1870 Other deferred revenue reductions [member] Member chu:OtherDeferredRevenueReductionsMember
1871 Retrospective application and retrospective restatement [axis] Axis ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1872 Currently stated [member] Member ifrs-full:RestatedMember
1873 Previously stated [member] Member ifrs-full:PreviouslyStatedMember
1874 Impact on Initial Application of IFRS15 [member] Member chu:ImpactOnInitialApplicationOfIfrs15Member
1875 Disclosure of deferred revenue [line items] LineItems chu:DisclosureOfDeferredRevenueLineItems
1876 Balance at beginning of the year Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
1877 Additions of deferred revenue during period Concept (Monetary) For Period Credit chu:AdditionsOfDeferredRevenueDuringPeriod
1878 Reductions of deferred revenue during period Concept (Monetary) For Period Debit chu:ReductionsOfDeferredRevenueDuringPeriod
1879 Balance at end of the year Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
1880 - current portion Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsCurrent
1881 - non-current portion Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
1882 1175 - Disclosure - Other Obligations - Summary of Other Obligations (Detail) Network

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1883 Implied Table Table

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1884 Classes of other provisions [abstract] Abstract ifrs-full:ClassesOfOtherProvisionsAbstract
1885 One-off cash housing subsidies Concept (Monetary) As Of Credit chu:OneOffCashHousingSubsidies
1886 Obligations under finance lease Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
1887 Others Concept (Monetary) As Of Credit ifrs-full:MiscellaneousOtherProvisions
1888 Sub-total Concept (Monetary) As Of Credit chu:OtherObligations
1889 Less: Current portion Concept (Monetary) As Of Credit chu:OtherCurrentObligations
1890 Other obligations, noncurrent Concept (Monetary) As Of Credit chu:OtherNonCurrentObligations
1891 1176 - Disclosure - Other Obligations - Summary of Other Obligations (Parenthetical) (Detail) Network

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1892 Disclosure of finance lease and operating lease by lessee [table] Table

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1893 Maturity [axis] Axis ifrs-full:MaturityAxis
1894 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1895 Less than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
1896 Between 1 and 2 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1897 Later than two years and not later than three years [member] Member ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1898 Disclosure of finance lease and operating lease by lessee [Line Items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
1899 Cash housing subsidies Concept (Monetary) As Of Credit chu:OneOffCashHousingSubsidies
1900 Minimum lease payments under finance lease Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
1901 Less: Future finance charges Concept (Monetary) As Of Credit ifrs-full:FutureFinanceChargeOnFinanceLease
1902 Present value of minimum obligations Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
1903 Representing obligations under finance lease,current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentFinanceLeaseLiabilities
1904 Representing obligations under finance lease, non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
1905 1177 - Disclosure - Short-Term Bank Loans - Summary of Short-Term Bank Loans (Detail) Network

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1906 Disclosure of detailed information about borrowings [table] Table

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1907 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1908 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1909 Short-term bank loans [member] Member chu:ShortTermBankLoansMember
1910 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1911 Short term borrowings Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
1912 1178 - Disclosure - Short-Term Bank Loans - Summary of Short-Term Bank Loans (Parenthetical) (Detail) Network

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1913 Disclosure of detailed information about borrowings [table] Table

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1914 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1915 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1916 Short-term bank loans [member] Member chu:ShortTermBankLoansMember
1917 Range [axis] Axis ifrs-full:RangeAxis
1918 Ranges [member] Member ifrs-full:RangesMember
1919 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
1920 Top of range [member] Member ifrs-full:TopOfRangeMember
1921 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1922 Bonds, bearing interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1923 1179 - Disclosure - Commercial Papers - Additional Information (Detail) Network

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1924 Disclosure of detailed information about borrowings [table] Table

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1925 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1926 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1927 China United Network Communications Corporation Limited ("CUCL") [member] Member chu:ChinaUnitedNetworkCommunicationsCorporationLimitedMember
1928 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1929 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1930 2017 super short term commercial papers [member] Member chu:TwoThousandSeventeenSuperShortTermCommercialPapersMember
1931 Range [axis] Axis ifrs-full:RangeAxis
1932 Ranges [member] Member ifrs-full:RangesMember
1933 Tranche four [member] Member chu:TrancheFourMember
1934 Tranche six [member] Member chu:TrancheSixMember
1935 Tranche seven [member] Member chu:TrancheSevenMember
1936 Disclosure of detailed information about borrowings [Line Items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1937 Commercial papers Concept (Monetary) As Of Credit ifrs-full:CurrentCommercialPapersIssuedAndCurrentPortionOfNoncurrentCommercialPapersIssued
1938 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
1939 Commercial papers interest Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1940 1180 - Disclosure - Accounts Payable and Accrued Liabilities - Summary of Accounts Payable and Accrued Liabilities (Detail) Network

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1941 Implied Table Table

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1942 Trade and other payables [abstract] Abstract ifrs-full:TradeAndOtherPayablesAbstract
1943 Payables to contractors and equipment suppliers Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1944 Payables to telecommunications products suppliers Concept (Monetary) As Of Credit chu:CurrentPayablesToTelecommunicationsProductsSuppliers
1945 Customer/contractor deposits Concept (Monetary) As Of Credit ifrs-full:CurrentDepositsFromCustomers
1946 Repair and maintenance expense payables Concept (Monetary) As Of Credit chu:CurrentRepairAndMaintenanceExpensePayables
1947 Bills payable Concept (Monetary) As Of Credit chu:CurrentBillsPayable
1948 Salary and welfare payables Concept (Monetary) As Of Credit ifrs-full:ShorttermEmployeeBenefitsAccruals
1949 Interest payable Concept (Monetary) As Of Credit ifrs-full:CurrentInterestPayable
1950 Amounts due to services providers/content providers Concept (Monetary) As Of Credit chu:CurrentAmountsDueToServicesProvidersContentProviders
1951 VAT received from customer in advance Concept (Monetary) As Of Credit chu:VATReceivedFromCustomerInAdvance
1952 Accrued expenses Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsCurrent
1953 Others Concept (Monetary) As Of Credit ifrs-full:OtherCurrentPayables
1954 Accounts payables and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1955 1181 - Disclosure - Accounts Payable and Accrued Liabilities - Summary of Aging Analysis of Accounts Payables and Accrued Liabilities (Detail) Network

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1956 Disclosure of financial liabilities [table] Table

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1957 Maturity [axis] Axis ifrs-full:MaturityAxis
1958 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1959 Less than six months [member] Member chu:NotLaterThanSixMonthsMember
1960 Six months to one year [member] Member ifrs-full:LaterThanSixMonthsAndNotLaterThanOneYearMember
1961 More than one year [member] Member ifrs-full:LaterThanOneYearMember
1962 Disclosure of financial liabilities [Line Items] LineItems ifrs-full:DisclosureOfFinancialLiabilitiesLineItems
1963 Accounts payables and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
1964 1182 - Disclosure - Mutual Investment of the Company and Telefonica in Each Other - Additional Information (Detail) Network

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1965 Disclosure of joint operations [table] Table

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1966 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
1967 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
1968 Telefonica [member] Member chu:TelefonicaSAMember
1969 Disclosure of joint operations [Line Items] LineItems ifrs-full:DisclosureOfJointOperationsLineItems
1970 Mutual investment amount through acquisition of each other's shares Concept (Monetary) As Of Debit chu:MutualInvestmentBetweenCompanies
1971 Purchase of ordinary shares in consideration from third parties Concept (Monetary) For Period Credit chu:PurchaseOfOrdinarySharesInConsiderationFromThirdParties
1972 Telefonica ordinary shares held in treasury to be acquired Concept (Shares) As Of chu:TreasuryStock
1973 Telefonica ordinary shares held in treasury to be acquired, value Concept (Monetary) As Of Debit ifrs-full:TreasuryShares
1974 Ordinary shares received through scrip dividend Concept (Shares) For Period chu:OrdinarySharesReceivedThroughImplementingScripDividend
1975 Ordinary share value received through scrip dividend Concept (Monetary) For Period Debit chu:OrdinarySharesValueThroughImplementingScripDividend
1976 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
1977 Increase (decrease) in fair value of financial assets through other comprehensive income, net of tax Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1978 1183 - Disclosure - Equity-Settled Share Option Schemes - Additional Information (Detail) Network

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1979 Implied Table Table

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1980 Disclosure of terms and conditions of share-based payment arrangement [abstract] Abstract ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementAbstract
1981 Number of options, available for issue Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsGrantedInSharebasedPaymentArrangement
1982 Payable for the grant of share options Concept (Share) As Of chu:PayableOfShareOptionGrant
1983 Options outstanding Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1984 1184 - Disclosure - Restricted A-Share Incentive Scheme - Additional Information (Detail) Network

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1985 Disclosure of classes of share capital [table] Table

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1986 Subsidiaries [axis] Axis ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1987 Entity's total for subsidiaries [member] Member ifrs-full:EntitysTotalForSubsidiariesMember
1988 China United Network Communication Limited (A Share Company) [member] Member chu:ChinaUnitedNetworkCommunicationLimitedAShareCompanyMember
1989 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1990 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1991 Share-based payment arrangement tranche one [member] Member chu:SharebasedPaymentArrangementTrancheOneMember
1992 Share-based payment arrangement tranche two [member] Member chu:SharebasedPaymentArrangementTrancheTwoMember
1993 Share-based payment arrangement tranche three [member] Member chu:SharebasedPaymentArrangementTrancheThreeMember
1994 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1995 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1996 Share Incentive Plan [member] Member chu:ShareIncentivePlanMember
1997 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
1998 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
1999 Potential ordinary share transactions [member] Member ifrs-full:PotentialOrdinaryShareTransactionsMember
2000 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
2001 Number of shares granted to employees Concept (Shares) For Period chu:ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsGrantsInPeriodGross
2002 Number of shares subscribed Concept (Shares) As Of chu:ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsSubscribed
2003 Subscription price per share Concept (Share) As Of chu:SubscriptionPricePerShare
2004 Fair value of restricted shares granted Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateOtherEquityInstrumentsGranted
2005 Market price per share Concept (Share) As Of chu:MarketValuePricePerShare
2006 Restricted share lock up period Concept (xbrli:durationItemType) For Period chu:RestrictedShareLockUpPeriod
2007 Proportion of total number of the Restricted Shares granted Concept (Percent) For Period chu:ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsVestingRightsPercentage
2008 Restricted shares forfeited or repurchased Concept (Shares) For Period chu:ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherThanOptionsForfeitedOrRepurchased
2009 Share-based payment expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
2010 1185 - Disclosure - Related Party Transactions - Summary of Connected Transactions with Unicom Group and its Subsidiaries (Detail) Network

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2011 Disclosure of transactions between related parties [table] Table

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2012 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2013 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2014 Connected transactions with Unicom Group and its subsidiaries [member] Member chu:ConnectedTransactionsWithUnicomGroupAndItsSubsidiariesMember
2015 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2016 Charges for value-added telecommunications services Concept (Monetary) For Period Debit chu:ValueaddedTelecommunicationsServicesRelatedPartyTransactions
2017 Rental charges for property leasing Concept (Monetary) For Period ifrs-full:LeasesAsLesseeRelatedPartyTransactions
2018 Charges for lease of telecommunications resources Concept (Monetary) For Period Debit chu:LeaseOfTelecommunicationsResourcesReceivedRelatedPartyTransactions
2019 Charges for engineering design and construction services Concept (Monetary) For Period Debit chu:EngineeringDesignAndConstructionServicesReceivedRelatedPartyTransactions
2020 Charges for shared services Concept (Monetary) For Period Debit chu:SharedServicesReceivedRelatedPartyTransactions
2021 Charges for materials procurement services Concept (Monetary) For Period Debit chu:MaterialProcurementServicesReceivedRelatedPartyTransactions
2022 Charges for ancillary telecommunications services Concept (Monetary) For Period Debit chu:AncillaryTelecommunicationsServicesReceivedRelatedPartyTransactions
2023 Charges for comprehensive support services Concept (Monetary) For Period Debit chu:ComprehensiveSupportServicesReceivedRelatedPartyTransactions
2024 Income from comprehensive support services Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
2025 Lending by Finance Company to Unicom Group Concept (Monetary) As Of Debit chu:LoansToRelatedParties
2026 Repayment of loan lending by Finance Company Concept (Monetary) For Period chu:RepaymentOfAdvancesAndLoansMadeToOtherPartiesOtherThanAdvancesAndLoansOfFinancialInstitution
2027 Interest income from lending services Concept (Monetary) For Period Credit ifrs-full:InterestIncomeOnLoansAndReceivables
2028 1186 - Disclosure - Related Party Transactions - Summary of Connected Transactions with Unicom Group and its Subsidiaries (Parenthetical) (Detail) Network

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2029 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2030 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2031 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2032 Connected transactions with Unicom Group and its subsidiaries [member] Member chu:ConnectedTransactionsWithUnicomGroupAndItsSubsidiariesMember
2033 China United Network Communications Group Company Limited [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedMember
2034 Range [axis] Axis ifrs-full:RangeAxis
2035 Ranges [member] Member ifrs-full:RangesMember
2036 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2037 Top of range [member] Member ifrs-full:TopOfRangeMember
2038 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2039 Rental charge paid Concept (Monetary) For Period Debit ifrs-full:RentalExpense
2040 Unsecured entrusted loan Concept (Monetary) As Of Debit chu:LoansToRelatedParties
2041 Unsecured entrusted loan interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2042 1187 - Disclosure - Related Party Transactions - Summary of Transactions with Tower Company (Detail) Network

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2043 Disclosure of transactions between related parties [table] Table

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2044 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2045 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2046 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
2047 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2048 Interest income from Cash Consideration Concept (Monetary) For Period Credit chu:InterestIncomeRelatedParty1
2049 Operating lease and other service charges Concept (Monetary) For Period ifrs-full:LeasesAsLesseeRelatedPartyTransactions
2050 Income from engineering design and construction services Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
2051 1188 - Disclosure - Related Party Transactions - Summary of Transactions with Tower Company (Parenthetical) (Detail) Network

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2052 Disclosure of transactions between related parties [table] Table

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2053 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2054 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2055 China Tower Corporation Limited ("Tower Company") [member] Member chu:ChinaTowerCorporationLimitedMember
2056 Maturity [axis] Axis ifrs-full:MaturityAxis
2057 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2058 Tranche one [member] Member chu:TrancheOneMember
2059 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2060 Consideration paid Concept (Monetary) For Period Debit chu:ConsiderationReceivedOrReceivable
2061 Consideration shares Concept (Shares) As Of ifrs-full:NumberOfSharesIssued
2062 Share price per share Concept (Share) As Of ifrs-full:ParValuePerShare
2063 Cash consideration Concept (Monetary) As Of Credit chu:PortionOfConsiderationReceivableReceivedConsistingOfCashAndCashEquivalents
2064 Cash Consideration and related VAT interest rate Concept (Percent) For Period chu:CashConsiderationAndRelatedVATInterestRate
2065 Interest income from Cash Consideration and related VAT Concept (Monetary) For Period Credit chu:InterestIncomeRelatedParty1
2066 Operating lease and other service charges Concept (Monetary) For Period Credit chu:OperatingLeaseAndOtherServiceCharges
2067 VAT recoverable related Cash Consideration Concept (Monetary) For Period Credit chu:ValueAddedTaxRecoverableRelatedCashConsiderationFromRelatedParty
2068 Operating lease and other service charges payable, and payable balance in relation to power charges paid by related party Concept (Monetary) As Of Credit ifrs-full:AmountsPayableRelatedPartyTransactions
2069 1189 - Disclosure - Related Party Transactions - Summary of Transactions with Unicom Group and its Subsidiaries (Detail) Network

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2070 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2071 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2072 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2073 China United Network Communications Group Company Limited and its subsidiaries [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedAndItsSubsidiariesMember
2074 A Share Company [member] Member chu:AShareCompanyMember
2075 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2076 Unsecured entrusted loan from Unicom Group and its subsidiaries Concept (Monetary) For Period Credit chu:UnsecuredEntrustedLoanRelatedPartyTransactions
2077 Repayment of unsecured entrusted loan to Unicom Group Concept (Monetary) For Period Debit chu:RepaymentsOnRelatedPartyTransactionsBorrowings
2078 Loan from a related party Concept (Monetary) For Period Credit chu:LoanFromRelatedParties
2079 Repayment of loan from a related party Concept (Monetary) For Period Credit ifrs-full:CashRepaymentsOfAdvancesAndLoansFromRelatedParties
2080 Interest expenses on unsecured entrusted loan Concept (Monetary) For Period Credit chu:InterestExpensesOnUnsecuredEntrustedLoanRelatedPartyTransactions
2081 Interests expenses on loan from a related party Concept (Monetary) For Period Debit chu:InterestExpenseOnLoansFromRelatedParties
2082 Net deposits/(withdrawal) by Unicom Group and its subsidiaries with/from Finance Company Concept (Monetary) For Period Credit chu:WithdrawalDepositsRelatedPartyTransactions
2083 Interest expenses on the deposits in Finance Company Concept (Monetary) For Period Debit chu:InterestExpenseRelatedPartyTransactions
2084 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2085 1190 - Disclosure - Related Party Transactions - Summary of Transactions with Unicom Group and its Subsidiaries (Parenthetical) (Detail) Network

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2086 Disclosure of transactions between related parties [table] Table

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*

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2087 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2088 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2089 China United Network Communications Group Company Limited and its subsidiaries [member] Member chu:ChinaUnitedNetworkCommunicationsGroupCompanyLimitedAndItsSubsidiariesMember
2090 China Unicom (BVI) Limited [member] Member chu:ChinaUnicomBVILimitedMember
2091 A Share Company [member] Member chu:AShareCompanyMember
2092 Range [axis] Axis ifrs-full:RangeAxis
2093 Ranges [member] Member ifrs-full:RangesMember
2094 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2095 Top of range [member] Member ifrs-full:TopOfRangeMember
2096 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
2097 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
2098 Borrowing interest rate 4.77% [member] Member chu:BorrowingInterestRateFourPointSevenSevenPercentageMember
2099 Floating interest rate at one year HIBOR plus 1.11% [member] Member chu:FloatingInterestRateAtOneYearHiborPlusOnePointOneOnePercentageMember
2100 Borrowing interest rate 4.28 % [member] Member chu:BorrowingInterestRateFourPointTwoEightPercentageMember
2101 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2102 Unsecured entrusted loan from Unicom Group Concept (Monetary) For Period Credit chu:UnsecuredEntrustedLoanRelatedPartyTransactions
2103 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2104 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2105 Loan from related parties Concept (Monetary) For Period Credit chu:LoanFromRelatedParties
2106 Borrowings interest rate basis Concept (Text/String) For Period ifrs-full:BorrowingsInterestRateBasis
2107 Amounts due to related party transactions Concept (Monetary) As Of Credit chu:AmountsDueToRelatedPartyTransactions
2108 Deposits interest rate Concept (Percent) As Of chu:DepositsInterestRate
2109 1191 - Disclosure - Related Party Transactions - Related Party Transactions with Joint Ventures (Detail) Network

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2110 Disclosure of transactions between related parties [table] Table

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*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2111 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2112 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2113 Smart Steps Digital Technology Co., Ltd [member] Member chu:SmartStepsDigitalTechnologyCoLtdMember
2114 Range [axis] Axis ifrs-full:RangeAxis
2115 Ranges [member] Member ifrs-full:RangesMember
2116 Bottom of range [member] Member ifrs-full:BottomOfRangeMember
2117 Top of range [member] Member ifrs-full:TopOfRangeMember
2118 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2119 Unsecured entrusted loans from joint venture Concept (Monetary) For Period Credit chu:UnsecuredEntrustedLoanRelatedPartyTransactions
2120 Repayment of unsecured entrusted loans to joint venture Concept (Monetary) For Period Credit chu:RepaymentOfUnsecuredEntrustedLoan
2121 Interest expenses on unsecured entrusted loans Concept (Monetary) For Period Credit chu:InterestExpensesOnUnsecuredEntrustedLoanRelatedPartyTransactions
2122 Net deposits from a joint venture with Finance Company Concept (Monetary) As Of Debit chu:NetDepositsAmount
2123 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2124 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2125 Repayment of unsecured entrusted loans to joint venture Concept (Monetary) For Period Debit chu:RepaymentsOnRelatedPartyTransactionsBorrowings
2126 Unsecured entrusted loan from joint venture Concept (Monetary) As Of Debit ifrs-full:ReceivablesDueFromJointVentures
2127 Deposits interest rate Concept (Percent) As Of chu:DepositsInterestRate
2128 1192 - Disclosure - Related Party Transactions - Related Party Transactions with Joint Ventures (Parenthetical) (Detail) Network

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2129 Disclosure of transactions between related parties [table] Table

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2130 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2131 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2132 Smart Steps Digital Technology Co., Ltd [member] Member chu:SmartStepsDigitalTechnologyCoLtdMember
2133 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2134 Unsecured entrusted loans from joint venture Concept (Monetary) For Period Credit chu:UnsecuredEntrustedLoanRelatedPartyTransactions
2135 Borrowings interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
2136 Bonds, maturity period Concept (Text/String) For Period ifrs-full:BorrowingsMaturity
2137 1193 - Disclosure - Related Party Transactions - Additional Information (Detail) Network

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2138 Disclosure of transactions between related parties [table] Table

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 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
2139 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
2140 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
2141 Related parties [member] Member ifrs-full:RelatedPartiesMember
2142 Disclosure of transactions between related parties [Line Items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
2143 Minimum operating lease payments under non-cancellable operating leases and other commitments Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
2144 1194 - Disclosure - Contingencies and Commitments - Summary of Capital Commitments (Detail) Network

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2145 Disclosure of detailed information about property, plant and equipment [table] Table

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2146 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2147 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
2148 Land and buildings [member] Member ifrs-full:LandAndBuildingsMember
2149 Equipment [member] Member chu:Equipment1Member
2150 Disclosure of detailed information about property, plant and equipment [Line Items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
2151 Authorized and contracted for Concept (Monetary) As Of Credit ifrs-full:ContractualCapitalCommitments
2152 Authorized but not contracted for Concept (Monetary) As Of Credit ifrs-full:AuthorisedCapitalCommitmentsButNotContractedFor
2153 Capital commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
2154 1195 - Disclosure - Contingencies and Commitments - Summary of Total Future Aggregate Minimum Operating Lease Payments Under Non-cancellable Operating Leases and Other Commitments (Detail) Network

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2155 Disclosure of finance lease and operating lease by lessee [table] Table

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2156 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
2157 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
2158 Land and buildings [member] Member ifrs-full:LandAndBuildingsMember
2159 Equipment [member] Member chu:Equipment1Member
2160 Ancillary facilities [member] Member chu:AncillaryFacilitiesMember
2161 Maturity [axis] Axis ifrs-full:MaturityAxis
2162 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
2163 Less than 1 year [member] Member ifrs-full:NotLaterThanOneYearMember
2164 Within 5 years [member] Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
2165 Over 5 years [member] Member ifrs-full:LaterThanFiveYearsMember
2166 Disclosure of finance lease and operating lease by lessee [Line Items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
2167 Minimum operating lease payments under non-cancellable operating leases and other commitments Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
2168 1196 - Disclosure - Contingencies and Commitments - Additional Information (Detail) Network

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2169 Disclosure of contingent liabilities [table] Table

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2170 Classes of contingent liabilities [axis] Axis ifrs-full:ClassesOfContingentLiabilitiesAxis
2171 Contingent liabilities [member] Member ifrs-full:ContingentLiabilitiesMember
2172 Contingent liabilities [member] Member ifrs-full:OtherContingentLiabilitiesMember
2173 Financial guarantees [member] Member ifrs-full:ContingentLiabilityForGuaranteesMember
2174 Disclosure of contingent liabilities [Line Items] LineItems ifrs-full:DisclosureOfContingentLiabilitiesLineItems
2175 Contingent liabilities Concept (Monetary) As Of ifrs-full:EstimatedFinancialEffectOfContingentLiabilities
2176 1197 - Disclosure - China Unicom (Hong Kong) Limited (Parent Company) - Additional Information (Detail) Network

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2177 Implied Table Table

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2178 Disclosure Of Parent Company Financial Statements [abstract] Abstract chu:DisclosureOfParentCompanyFinancialStatementsAbstract
2179 Statutory reserve Concept (Monetary) As Of Credit ifrs-full:StatutoryReserve
2180 Restricted net assets Concept (Monetary) As Of Credit chu:CapitalAndStatutoryReserves
2181 1198 - Disclosure - China Unicom (Hong Kong) Limited (Parent Company) - Condensed Statements of Financial Position (Detail) Network

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2182 Disclosure of parent company financial statements [Table] Table

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2183 Consolidated Entities [Axis] Axis srt:ConsolidatedEntitiesAxis
2184 Consolidated Entities [Domain] Member srt:ConsolidatedEntitiesDomain
2185 Parent Company [Member] Member srt:ParentCompanyMember
2186 Disclosure of parent company financial statements [Line Items] LineItems srt:CondensedFinancialStatementsCaptionsLineItems
2187 ASSETS Abstract ifrs-full:AssetsAbstract
2188 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
2189 Property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
2190 Investments in subsidiaries Concept (Monetary) As Of Debit ifrs-full:InvestmentsInSubsidiaries
2191 Loan to a subsidiary Concept (Monetary) As Of Debit chu:LoanToSubsidiaryNonCurrentAssets
2192 Financial assets at fair value through other comprehensive income Concept (Monetary) As Of Debit ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
2193 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
2194 Current assets Abstract ifrs-full:CurrentAssetsAbstract
2195 Loan to subsidiaries Concept (Monetary) As Of Debit chu:LoanToSubsidiaryCurrentAssets
2196 Amounts due from subsidiaries Concept (Monetary) As Of Debit chu:CurrentAssetAmountDueFromSubsidiaries
2197 Dividend receivable Concept (Monetary) As Of Debit chu:CurrentDividendsReceivable
2198 Prepayments and other current assets Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
2199 Short-term bank deposits Concept (Monetary) As Of Debit chu:ShorttermBankDeposits
2200 Cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2201 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
2202 Total assets Concept (Monetary) As Of Debit ifrs-full:Assets
2203 EQUITY Abstract ifrs-full:EquityAbstract
2204 Equity attributable to equity shareholders of the Company Abstract chu:EquityAttributableToEquityHoldersAbstract
2205 Share capital Concept (Monetary) As Of Credit chu:ShareCapital
2206 Reserves Concept (Monetary) As Of Credit ifrs-full:OtherReserves
2207 Retained profits Abstract chu:RetainedEarningsAbstract
2208 - Proposed final dividend Concept (Monetary) As Of Credit chu:ProposedFinalDividend
2209 - Others Concept (Monetary) As Of Credit chu:OtherRetainedProfits
2210 Total equity Concept (Monetary) As Of Credit ifrs-full:Equity
2211 LIABILITIES Abstract ifrs-full:LiabilitiesAbstract
2212 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
2213 Short-term bank loans Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
2214 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
2215 Loan from immediate holding company Concept (Monetary) As Of Credit chu:LoanFromImmediateHolding
2216 Loans from subsidiaries Concept (Monetary) As Of Credit chu:LoanToSubsidiaryCurrentLiabilities
2217 Taxes payable Concept (Monetary) As Of Credit ifrs-full:CurrentTaxLiabilitiesCurrent
2218 Dividend payable Concept (Monetary) As Of Credit ifrs-full:CurrentDividendPayables
2219 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
2220 Total liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
2221 Total equity and liabilities Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
2222 Net current liabilities Concept (Monetary) As Of Debit ifrs-full:CurrentAssetsLiabilities
2223 Total assets less current liabilities Concept (Monetary) As Of Debit ifrs-full:AssetsLessCurrentLiabilities
2224 1199 - Disclosure - China Unicom (Hong Kong) Limited (Parent Company) - Condensed Statements of Comprehensive Income (Detail) Network

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2225 Disclosure of parent company financial statements [Table] Table

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2226 Consolidated Entities [Axis] Axis srt:ConsolidatedEntitiesAxis
2227 Consolidated Entities [Domain] Member srt:ConsolidatedEntitiesDomain
2228 Parent Company [Member] Member srt:ParentCompanyMember
2229 Disclosure of parent company financial statements [Line Items] LineItems srt:CondensedFinancialStatementsCaptionsLineItems
2230 Revenue Concept (Monetary) For Period Credit ifrs-full:Revenue
2231 Dividend income Concept (Monetary) For Period Credit ifrs-full:RevenueFromDividends
2232 General and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
2233 Interest income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
2234 Finance costs Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
2235 Other income-net Concept (Monetary) For Period Credit ifrs-full:OtherIncome
2236 Income before taxation Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
2237 Income tax expenses Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
2238 Net income Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
2239 Other comprehensive income: Abstract ifrs-full:OtherComprehensiveIncomeAbstract
2240 Change in fair value of financial assets through other comprehensive income-net Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
2241 Total comprehensive income for the year Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
2242 1200 - Disclosure - China Unicom (Hong Kong) Limited (Parent Company) - Condensed Statements of Cash Flows (Detail) Network

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2243 Disclosure of parent company financial statements [Table] Table

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2244 Consolidated Entities [Axis] Axis srt:ConsolidatedEntitiesAxis
2245 Consolidated Entities [Domain] Member srt:ConsolidatedEntitiesDomain
2246 Parent Company [Member] Member srt:ParentCompanyMember
2247 Disclosure of parent company financial statements [Line Items] LineItems srt:CondensedFinancialStatementsCaptionsLineItems
2248 Net cash outflow from operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
2249 Net cash inflow/(outflow) from investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
2250 Net cash inflow/(outflow) from financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
2251 - Dividend paid to equity shareholders of the Company Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToEquityHoldersOfParentClassifiedAsFinancingActivities
2252 Net increase/(decrease) in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalents
2253 Cash and cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
2254 Effect of changes in foreign exchange rate Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
2255 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents

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