CHINA PETROLEUM & CHEMICAL CORP (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line	Label	Object Class	Period Type	Balance	Report ElementName
1	00090 - Document - DOCUMENT AND ENTITY INFORMATION	Network	*	*	http://www.sinopec.com/role/DocumentDocumentAndEntityInformation
2	Disclosure of classes of share capital [table]	Table	*	*	ifrs-full:DisclosureOfClassesOfShareCapitalTable
3	Classes of share capital [axis]	Axis			ifrs-full:ClassesOfShareCapitalAxis
4	Share capital [member]	Member			ifrs-full:ClassesOfShareCapitalMember
5	H shares	Member			snp:HSharesMember
6	A shares	Member			snp:ASharesMember
7	Class of Shares	LineItems			ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
8	Entity Registrant Name	Concept (Text/String)	For Period		dei:EntityRegistrantName
9	Entity Central Index Key	Concept (CIK Number)	For Period		dei:EntityCentralIndexKey
10	Document Type	Concept (Submission Type)	For Period		dei:DocumentType
11	Document Period End Date	Concept (Date)	For Period		dei:DocumentPeriodEndDate
12	Amendment Flag	Concept (Yes/No)	For Period		dei:AmendmentFlag
13	Current Fiscal Year End Date	Concept (Month/Day)	For Period		dei:CurrentFiscalYearEndDate
14	Entity Well-known Seasoned Issuer	Concept (Yes/No)	For Period		dei:EntityWellKnownSeasonedIssuer
15	Entity Voluntary Filers	Concept (Yes/No)	For Period		dei:EntityVoluntaryFilers
16	Entity Current Reporting Status	Concept (Yes/No)	For Period		dei:EntityCurrentReportingStatus
17	Entity Filer Category	Concept (Filer Category)	For Period		dei:EntityFilerCategory
18	Entity Common Stock, Shares Outstanding	Concept (Shares)	As Of		dei:EntityCommonStockSharesOutstanding
19	Entity Emerging Growth Company	Concept (Yes/No)	For Period		dei:EntityEmergingGrowthCompany
20	Entity Shell Company	Concept (Yes/No)	For Period		dei:EntityShellCompany
21	Document Fiscal Year Focus	Concept (Year)	For Period		dei:DocumentFiscalYearFocus
22	Document Fiscal Period Focus	Concept (Fiscal Period)	For Period		dei:DocumentFiscalPeriodFocus
23	00100 - Statement - CONSOLIDATED STATEMENT OF INCOME	Network	*	*	http://www.sinopec.com/role/StatementConsolidatedStatementOfIncome
24	Implied Table	Table	*	*	implied:Table
25	CONSOLIDATED STATEMENT OF INCOME [abstract]	Abstract			ifrs-full:IncomeStatementAbstract
26	Operating revenues	Abstract			ifrs-full:RevenueAbstract
27	Sales of goods	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromSaleOfGoods
28	Other operating revenues	Concept (Monetary)	For Period	Credit	snp:OtherOperatingRevenues
29	Total operating revenues	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
30	Operating expenses	Abstract			snp:IfrsCostsAndExpensesAbstract
31	Purchased crude oil, products and operating supplies and expenses	Concept (Monetary)	For Period	Debit	snp:PurchasedCrudeOilProductsAndOperatingSuppliesAndExpenses
32	Selling, general and administrative expenses	Concept (Monetary)	For Period	Debit	ifrs-full:SellingGeneralAndAdministrativeExpense
33	Depreciation, depletion and amortization	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationAndAmortisationExpense
34	Exploration expenses, including dry holes	Concept (Monetary)	For Period	Debit	ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
35	Personnel expenses	Concept (Monetary)	For Period	Debit	ifrs-full:EmployeeBenefitsExpense
36	Taxes other than income tax	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
37	Other operating income/(expense), net	Concept (Monetary)	For Period	Credit	ifrs-full:OtherOperatingIncomeExpense
38	Total operating expenses	Concept (Monetary)	For Period	Debit	ifrs-full:OperatingExpense
39	Operating income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
40	Finance costs	Abstract			snp:FinanceCostsAbstract
41	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
42	Interest income	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromInterest
43	Foreign currency exchange (loss)/gain, net	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
44	Net finance costs	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncomeCost
45	Investment income	Concept (Monetary)	For Period	Credit	ifrs-full:InvestmentIncome
46	Share of profits less losses from associates and joint ventures	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
47	Earnings before income tax	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
48	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
49	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
50	Attributable to:	Abstract			ifrs-full:ProfitLossAttributableToAbstract
51	Owners of the Company	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
52	Non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToNoncontrollingInterests
53	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
54	Earnings per share:	Abstract			ifrs-full:EarningsPerShareAbstract
55	Basic	Concept (Share)	For Period		ifrs-full:BasicEarningsLossPerShare
56	Diluted	Concept (Share)	For Period		ifrs-full:DilutedEarningsLossPerShare
57	00200 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME	Network	*	*	http://www.sinopec.com/role/StatementConsolidatedStatementOfComprehensiveIncome
58	Implied Table	Table	*	*	implied:Table
59	CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME [abstract]	Abstract			ifrs-full:StatementOfComprehensiveIncomeAbstract
60	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
61	Other comprehensive income:	Abstract			ifrs-full:OtherComprehensiveIncomeAbstract
62	Items that may not be reclassified subsequently to profit or loss	Abstract			ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
63	Equity investments at fair value through other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesFromInvestmentsInEquityInstruments
64	Total items that maynot be reclassified subsequently to profit or loss	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTax
65	Items that may be reclassified subsequently to profit or loss	Abstract			ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
66	Share of other comprehensive income /(loss) of associates and joint ventures	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
67	Available-for-sale securities	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
68	Cash flow hedges	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
69	Foreign currency translation differences	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
70	Total items that may be reclassified subsequently to profit or loss	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTax
71	Total other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
72	Total comprehensive income for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
73	Attributable to:	Abstract			ifrs-full:ComprehensiveIncomeAttributableToAbstract
74	Owners of the Company	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToOwnersOfParent
75	Non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
76	Total comprehensive income for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
77	00300 - Statement - CONSOLIDATED BALANCE SHEET	Network	*	*	http://www.sinopec.com/role/StatementConsolidatedBalanceSheet
78	Implied Table	Table	*	*	implied:Table
79	CONSOLIDATED BALANCE SHEET [abstract]	Abstract			ifrs-full:StatementOfFinancialPositionAbstract
80	ASSETS	Abstract			ifrs-full:AssetsAbstract
81	Current assets	Abstract			ifrs-full:CurrentAssetsAbstract
82	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
83	Time deposits with financial institutions	Concept (Monetary)	As Of	Debit	snp:TimeDepositsWithFinancialInstitutions
84	Financial assets at fair value through profit or loss	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss
85	Derivatives financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentDerivativeFinancialAssets
86	Trade accounts receivable and bills receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
87	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
88	Prepaid expenses and other current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
89	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
90	Non-current assets	Abstract			ifrs-full:NoncurrentAssetsAbstract
91	Property, plant and equipment, net	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
92	Construction in progress	Concept (Monetary)	As Of	Debit	ifrs-full:ConstructionInProgress
93	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
94	Interest in associates	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentsInAssociatesAccountedForUsingEquityMethod
95	Interest in joint ventures	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
96	Available-for-sale financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsAvailableforsale
97	Financial assets at fair value through other comprehensive income	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
98	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:NetDeferredTaxAssets
99	Lease prepayments	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentLeasePrepayments
100	Long-term prepayments and other assets	Concept (Monetary)	As Of	Debit	snp:LongtermPrepaymentsAndOtherAssets
101	Total non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
102	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
103	LIABILITIES AND EQUITY	Abstract			ifrs-full:EquityAndLiabilitiesAbstract
104	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
105	Short-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
106	Loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:CurrentLoansFromGroupAndFellowSubsidiaries
107	Derivatives financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentDerivativeFinancialLiabilities
108	Trade accounts payable and bills payable	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
109	Contract liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:ContractLiabilities
110	Other payables	Concept (Monetary)	As Of	Credit	ifrs-full:OtherPayables
111	Income tax payable	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
112	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
113	Non-current liabilities	Abstract			ifrs-full:NoncurrentLiabilitiesAbstract
114	Long-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
115	Loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:NoncurrentLoansFromGroupAndFellowSubsidiaries
116	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NetDeferredTaxLiabilities
117	Provisions	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentProvisions
118	Other long-term liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
119	Total non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
120	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
121	Equity	Abstract			ifrs-full:EquityAbstract
122	Share capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
123	Reserves	Concept (Monetary)	As Of	Credit	snp:Reserves
124	Total equity attributable to owners of the Company	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
125	Non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
126	Total equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
127	Total liabilities and equity	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAndLiabilities
128	00400 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY	Network	*	*	http://www.sinopec.com/role/StatementConsolidatedStatementOfChangesInEquity
129	Statement of changes in equity [table]	Table	*	*	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	Capital reserve	Member			ifrs-full:CapitalReserveMember
134	Share premium	Member			ifrs-full:SharePremiumMember
135	Statutory surplus reserve	Member			ifrs-full:StatutoryReserveMember
136	Discretionary surplus reserve	Member			ifrs-full:ReserveOfDiscretionaryParticipationFeaturesMember
137	Other reserves	Member			ifrs-full:OtherReservesMember
138	Retained earnings	Member			ifrs-full:RetainedEarningsMember
139	Total equity attributable to owners of the Company [member]	Member			ifrs-full:EquityAttributableToOwnersOfParentMember
140	Non-controlling interests	Member			ifrs-full:NoncontrollingInterestsMember
141	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
142	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
143	Sinopec Assets Management Corporation ("SAMC")	Member			snp:SinopecAssetsManagementCorporationSamcMember
144	Retrospective application and retrospective restatement [axis]	Axis			ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
145	Currently stated [member]	Member			ifrs-full:RestatedMember
146	Change in accounting policy (Note 1(a))	Member			ifrs-full:FinancialEffectOfChangesInAccountingPolicyMember
147	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
148	Balance at beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
149	Change in accounting policy (Note1(a))	Concept (Monetary)	As Of	Credit	snp:IfrsCumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
150	Balance as of January 1, 2018	Concept (Monetary)	As Of	Credit	snp:EquityAdjustedForCumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
151	Net income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
152	Other comprehensive income (Note 11)	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
153	Total comprehensive income for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
154	Amounts transferred to cash flow hedge reserves initially recognized by hedged items	Concept (Monetary)	For Period	Credit	snp:AmountsTransferredToCashFlowHedgeReservesInitiallyRecognisedByHedgedItems
155	Transactions with owners, recorded directly in equity:	Abstract			snp:TransactionsWithOwnersRecordedDirectlyInEquityAbstract
156	Contributions by and distributions to owners:	Abstract			snp:ContributionsByAndDistributionsToOwnersAbstract
157	Final dividend	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears
158	Interim dividend	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToCurrentYear
159	Appropriation (Note 41(c))	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
160	Distributions to non-controlling interests	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughOtherDistributionsToOwners
161	Contributions to subsidiaries from non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughOtherContributionsByOwners
162	Profit distribution to SAMC (Note 33)	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
163	Total contributions by and distributions to owners	Concept (Monetary)	For Period	Credit	snp:IncreaseThroughContributionsByAndDecreaseThroughDistributionsToOwnersEquity
164	Changes in ownership interests in subsidiaries that do not result in a loss of control:	Abstract			snp:ChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControlAbstract
165	Transaction with non-controlling interests	Concept (Monetary)	For Period	Credit	snp:TransactionWithNoncontrollingInterests
166	Total changes in ownership interests in subsidiaries that do not result in a loss of control	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
167	Total transactions with owners	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransactionsWithOwners
168	Others	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
169	Balance at end of year	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
170	00500 - Statement - CONSOLIDATED STATEMENT OF CASH FLOWS	Network	*	*	http://www.sinopec.com/role/StatementConsolidatedStatementOfCashFlows
171	Implied Table	Table	*	*	implied:Table
172	CONSOLIDATED STATEMENT OF CASH FLOWS [abstract]	Abstract			ifrs-full:StatementOfCashFlowsAbstract
173	Net cash generated from operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
174	Investing activities	Abstract			ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
175	Capital expenditure	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
176	Exploratory wells expenditure	Concept (Monetary)	For Period	Credit	snp:ExploratoryWellsExpenditure
177	Purchase of investments, investments in associates and investments in joint ventures	Concept (Monetary)	For Period	Credit	ifrs-full:PurchaseOfInterestsInInvestmentsAccountedForUsingEquityMethod
178	Payment for financial assets at fair value through profit or loss	Concept (Monetary)	For Period	Credit	snp:PaymentForFinancialAssetsAtFairValueThroughProfitOrLoss
179	Proceeds from sale of financial assets at fair value through profit or loss	Concept (Monetary)	For Period	Debit	snp:ProceedsFromSaleOfFinancialAssetsAtFairValueThroughProfitOrLoss
180	Payment for acquisition of subsidiary, net of cash acquired	Concept (Monetary)	For Period	Credit	ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
181	Proceeds from disposal of investments and investments in associates	Concept (Monetary)	For Period	Debit	snp:ProceedsFromDisposalOfInvestmentsAndInvestmentsInAssociates
182	Proceeds from disposal of property, plant, equipment and other non-current assets	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromDisposalsOfPropertyPlantAndEquipmentIntangibleAssetsOtherThanGoodwillInvestmentPropertyAndOtherNoncurrentAssets
183	Increase in time deposits with maturities over three months	Concept (Monetary)	For Period	Credit	snp:IncreaseInTimeDepositsWithMaturitiesOverThreeMonths
184	Decrease in time deposits with maturities over three months	Concept (Monetary)	For Period	Debit	snp:DecreaseInTimeDepositsWithMaturitiesOverThreeMonths
185	Interest received	Concept (Monetary)	For Period	Debit	ifrs-full:InterestReceivedClassifiedAsInvestingActivities
186	Investment and dividend income received	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsReceivedClassifiedAsInvestingActivities
187	Net cash used in investing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
188	Financing activities	Abstract			ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
189	Proceeds from bank and other loans	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromBorrowingsClassifiedAsFinancingActivities
190	Repayments of bank and other loans	Concept (Monetary)	For Period	Credit	ifrs-full:RepaymentsOfBorrowingsClassifiedAsFinancingActivities
191	Contributions to subsidiaries from non-controlling interests	Concept (Monetary)	For Period	Debit	snp:ContributionsFromRelatedPartiesInAcquisitionFromFinancingActivities
192	Dividend paid by the Company	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidClassifiedAsFinancingActivities
193	Distributions by subsidiaries to non-controlling interests	Concept (Monetary)	For Period	Credit	snp:DistributionsBySubsidiariesToNoncontrollingInterests
194	Interest paid	Concept (Monetary)	For Period	Credit	ifrs-full:InterestPaidClassifiedAsFinancingActivities
195	Payments made to acquire non-controlling interests	Concept (Monetary)	For Period	Credit	snp:PaymentsMadeToAcquireNonControllingInterests
196	Finance lease payment	Concept (Monetary)	For Period	Credit	ifrs-full:PaymentsOfFinanceLeaseLiabilitiesClassifiedAsFinancingActivities
197	Net cash used in financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
198	Net increase/(decrease) in cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
199	Balance at beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
200	Effect of foreign currency exchange rate changes	Concept (Monetary)	For Period	Debit	ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
201	Balance at end of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
202	(a) Reconciliation of earnings before income tax to net cash generated from operating activities	Abstract			snp:DisclosureOfReconciliationOfEarningsBeforeIncomeTaxToNetCashGeneratedFromOperatingActivitiesAbstract
203	Operating activities	Abstract			ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
204	Earnings before income tax	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
205	Adjustment for:	Abstract			ifrs-full:AdjustmentsForReconcileProfitLossAbstract
206	Depreciation, depletion and amortization	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDepreciationAndAmortisationExpense
207	Dry hole costs written off	Concept (Monetary)	For Period	Credit	snp:ConstructionInProgressDryHoleCostWrittenOff
208	Income from associates and joint ventures	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
209	Investment income	Concept (Monetary)	For Period	Credit	ifrs-full:InvestmentIncome
210	Gain on dilution and remeasurement of interests in the Pipeline Ltd	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossOnCessationOfConsolidationOfSubsidiariesDueToChangeOfInvestmentEntityStatus
211	Gain on remeasurement of interests in the Shanghai SECCO (Note 33)	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossRecognisedAsResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombination
212	Interest income	Concept (Monetary)	For Period	Credit	ifrs-full:AdjustmentsForInterestIncome
213	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForInterestExpense
214	Loss/(gain) on foreign currency exchange rate changes and derivative financial instruments	Concept (Monetary)	For Period	Credit	snp:GainLossOnForeignCurrencyExchangeRateChangesAndDerivativeFinancialInstruments
215	Loss on disposal of property, plant, equipment and other non-current assets, net	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets
216	Impairment losses on assets	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
217	Credit impairment losses	Concept (Monetary)	For Period	Debit	snp:AdjustmentsForCreditImpairmentLossReversalOfCreditImpairmentLossRecognisedInProfitOrLoss
218	Cash flows from (used in) operations before changes in working capital	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital
219	Net changes from:	Abstract			snp:AdjustmentForNetChargesFromAssetsAndLiabilitiesAbstract
220	Accounts receivable and other current assets	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
221	Inventories	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
222	Accounts payable and other current liabilities	Concept (Monetary)	For Period	Debit	snp:AdjustmentsForIncreaseDecreaseInAccountsPayablesAndOtherCurrentLiabilities
223	Net charges from operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperations
224	Income tax paid	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForIncomeTaxExpense
225	Net cash generated from operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
226	10101 - Disclosure - PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalActivitiesOrganizationAndBasisOfPreparation
227	Implied Table	Table	*	*	implied:Table
228	PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION [abstract]	Abstract			snp:PrincipalActivitiesOrganizationAndBasisOfPreparationAbstract
229	Disclosure of principal activities, organization and basis of preparation	Concept (Text Block (HTML))	For Period		snp:DisclosureOfPrincipalActivitiesOrganizationAndBasisOfPreparationExplanatory
230	10201 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES	Network	*	*	http://www.sinopec.com/role/DisclosureSignificantAccountingPolicies
231	Implied Table	Table	*	*	implied:Table
232	SIGNIFICANT ACCOUNTING POLICIES [abstract]	Abstract			snp:SignificantAccountingPoliciesAbstract
233	Disclosure of significant accounting policies	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
234	10301 - Disclosure - SALES OF GOODS	Network	*	*	http://www.sinopec.com/role/DisclosureSalesOfGoods
235	Implied Table	Table	*	*	implied:Table
236	SALES OF GOODS [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
237	Disclosure of sales of goods	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRevenueExplanatory
238	10401 - Disclosure - OTHER OPERATING REVENUES	Network	*	*	http://www.sinopec.com/role/DisclosureOtherOperatingRevenues
239	Implied Table	Table	*	*	implied:Table
240	OTHER OPERATING REVENUES [abstract]	Abstract			snp:OtherOperatingRevenuesAbstract
241	Disclosure of other operating revenues	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherOperatingIncomeExplanatory
242	10501 - Disclosure - SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	Network	*	*	http://www.sinopec.com/role/DisclosureSellingGeneralAndAdministrativeExpenses
243	Implied Table	Table	*	*	implied:Table
244	SELLING, GENERAL AND ADMINISTRATIVE EXPENSES [abstract]	Abstract			ifrs-full:SellingGeneralAndAdministrativeExpenseAbstract
245	Disclosure of selling, general and administrative expenses	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSellingGeneralAndAdministrativeExpensesExplanatory
246	10601 - Disclosure - PERSONNEL EXPENSES	Network	*	*	http://www.sinopec.com/role/DisclosurePersonnelExpenses
247	Implied Table	Table	*	*	implied:Table
248	PERSONNEL EXPENSES [abstract]	Abstract			snp:PersonnelExpensesAbstract
249	Disclosure of personnel expenses	Concept (Text Block (HTML))	For Period		snp:DisclosureOfPersonnelExpensesExplanatory
250	10701 - Disclosure - TAXES OTHER THAN INCOME TAX	Network	*	*	http://www.sinopec.com/role/DisclosureTaxesOtherThanIncomeTax
251	Implied Table	Table	*	*	implied:Table
252	TAXES OTHER THAN INCOME TAX [abstract]	Abstract			snp:TaxesOtherThanIncomeTaxAbstract
253	Disclosure of taxes other than income tax	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTaxesOtherThanIncomeTaxExplanatory
254	10801 - Disclosure - OTHER OPERATING INCOME/(EXPENSE), NET	Network	*	*	http://www.sinopec.com/role/DisclosureOtherOperatingIncomeExpenseNet
255	Implied Table	Table	*	*	implied:Table
256	OTHER OPERATING INCOME/(EXPENSE), NET [abstract]	Abstract			snp:OtherOperatingExpenseAbstract
257	OTHER OPERATING INCOME/(EXPENSE), NET	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherOperatingExpenseExplanatory
258	10901 - Disclosure - INTEREST EXPENSE	Network	*	*	http://www.sinopec.com/role/DisclosureInterestExpense
259	Implied Table	Table	*	*	implied:Table
260	INTEREST EXPENSE [abstract]	Abstract			ifrs-full:InterestCostsAbstract
261	Disclosure of interest expense	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestExpenseExplanatory
262	11001 - Disclosure - INCOME TAX EXPENSE	Network	*	*	http://www.sinopec.com/role/DisclosureIncomeTaxExpense
263	Implied Table	Table	*	*	implied:Table
264	INCOME TAX EXPENSE [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
265	Disclosure of income tax expense	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfIncomeTaxExplanatory
266	11101 - Disclosure - OTHER COMPREHENSIVE INCOME	Network	*	*	http://www.sinopec.com/role/DisclosureOtherComprehensiveIncome
267	Implied Table	Table	*	*	implied:Table
268	OTHER COMPREHENSIVE INCOME [abstract]	Abstract			ifrs-full:OtherComprehensiveIncomeAbstract
269	Disclosure of other comprehensive income	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAnalysisOfOtherComprehensiveIncomeByItemExplanatory
270	11201 - Disclosure - BASIC AND DILUTED EARNINGS PER SHARE	Network	*	*	http://www.sinopec.com/role/DisclosureBasicAndDilutedEarningsPerShare
271	Implied Table	Table	*	*	implied:Table
272	BASIC AND DILUTED EARNINGS PER SHARE [abstract]	Abstract			ifrs-full:BasicAndDilutedEarningsPerShareAbstract
273	Disclosure of basic and diluted earnings per share	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEarningsPerShareExplanatory
274	11301 - Disclosure - FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialAssetsAtFairValueThroughProfitOrLoss
275	Implied Table	Table	*	*	implied:Table
276	FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS [abstract]	Abstract			ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossAbstract
277	Disclosure of financial assets at fair value through profit or loss	Concept (Text Block (HTML))	For Period		snp:DisclosureOfFinancialAssetsAtFairValueThroughProfitOrLossTextBlock
278	11401 - Disclosure - DERIVATIVES FINANCIAL ASSETS AND DERIVATIVES FINANCIAL LIABILITIES	Network	*	*	http://www.sinopec.com/role/DisclosureDerivativesFinancialAssetsAndDerivativesFinancialLiabilities
279	Implied Table	Table	*	*	implied:Table
280	DERIVATIVES FINANCIAL ASSETS AND DERIVATIVES FINANCIAL LIABILITIES	Abstract			ifrs-full:DisclosureOfFinancialInstrumentsAbstract
281	Disclosure of derivatives financial assets and derivatives financial liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDerivativeFinancialInstrumentsExplanatory
282	11501 - Disclosure - TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE	Network	*	*	http://www.sinopec.com/role/DisclosureTradeAccountsReceivableAndBillsReceivable
283	Implied Table	Table	*	*	implied:Table
284	TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE [abstract]	Abstract			snp:TradeAccountsReceivableAndBillsReceivableAbstract
285	Disclosure of trade accounts receivable and bills receivable	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTradeAccountsReceivableAndBillsReceivableExplanatory
286	11601 - Disclosure - INVENTORIES	Network	*	*	http://www.sinopec.com/role/DisclosureInventories
287	Implied Table	Table	*	*	implied:Table
288	INVENTORIES [abstract]	Abstract			ifrs-full:ClassesOfInventoriesAbstract
289	Disclosure of inventories	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInventoriesExplanatory
290	11701 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT ASSETS	Network	*	*	http://www.sinopec.com/role/DisclosurePrepaidExpensesAndOtherCurrentAssets
291	Implied Table	Table	*	*	implied:Table
292	PREPAID EXPENSES AND OTHER CURRENT ASSETS [abstract]	Abstract			snp:PrepaidExpensesAndOtherCurrentAssetsAbstract
293	Disclosure of prepaid expenses and other current assets	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfPrepaymentsAndOtherAssetsExplanatory
294	11801 - Disclosure - PROPERTY, PLANT AND EQUIPMENT	Network	*	*	http://www.sinopec.com/role/DisclosurePropertyPlantAndEquipment
295	Implied Table	Table	*	*	implied:Table
296	PROPERTY, PLANT AND EQUIPMENT [abstract]	Abstract			ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
297	Disclosure of property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
298	11901 - Disclosure - CONSTRUCTION IN PROGRESS	Network	*	*	http://www.sinopec.com/role/DisclosureConstructionInProgress
299	Implied Table	Table	*	*	implied:Table
300	CONSTRUCTION IN PROGRESS [abstract]	Abstract			snp:ConstructionInProgressAbstract
301	Disclosure of construction in progress	Concept (Text Block (HTML))	For Period		snp:DisclosureOfConstructionInProgressExplanatory
302	12001 - Disclosure - GOODWILL	Network	*	*	http://www.sinopec.com/role/DisclosureGoodwill
303	Implied Table	Table	*	*	implied:Table
304	GOODWILL [abstract]	Abstract			snp:GoodwillAbstract
305	Disclosure of goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfGoodwillExplanatory
306	12101 - Disclosure - INTEREST IN ASSOCIATES	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInAssociates
307	Implied Table	Table	*	*	implied:Table
308	INTEREST IN ASSOCIATES [abstract]	Abstract			ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesAbstract
309	Disclosure of interest in associates	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestsInAssociatesExplanatory
310	12201 - Disclosure - INTEREST IN JOINT VENTURES	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInJointVentures
311	Implied Table	Table	*	*	implied:Table
312	INTEREST IN JOINT VENTURES [abstract]	Abstract			ifrs-full:DisclosureOfJointVenturesAbstract
313	Disclosure of interest in joint ventures	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfJointVenturesExplanatory
314	12301 - Disclosure - DEFERRED TAX ASSETS AND LIABILITIES	Network	*	*	http://www.sinopec.com/role/DisclosureDeferredTaxAssetsAndLiabilities
315	Implied Table	Table	*	*	implied:Table
316	DEFERRED TAX ASSETS AND LIABILITIES [abstract]	Abstract			ifrs-full:DeferredTaxAssetsAndLiabilitiesAbstract
317	Disclosure of deferred tax assets and liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDeferredTaxesExplanatory
318	12401 - Disclosure - LEASE PREPAYMENTS	Network	*	*	http://www.sinopec.com/role/DisclosureLeasePrepayments
319	Implied Table	Table	*	*	implied:Table
320	LEASE PREPAYMENTS [abstract]	Abstract			snp:LeasePrepaymentsAbstract
321	Disclosure of lease prepayments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfLeasePrepaymentsExplanatory
322	12501 - Disclosure - LONG-TERM PREPAYMENTS AND OTHER ASSETS	Network	*	*	http://www.sinopec.com/role/DisclosureLongTermPrepaymentsAndOtherAssets
323	Implied Table	Table	*	*	implied:Table
324	LONG-TERM PREPAYMENTS AND OTHER ASSETS [abstract]	Abstract			snp:LongtermPrepaymentsAndOtherAssetsAbstract
325	Disclosure of long-term prepayments and other assets	Concept (Text Block (HTML))	For Period		snp:DisclosureOfLongtermPrepaymentsAndOtherAssetsExplanatory
326	12601 - Disclosure - SHORT-TERM AND LONG-TERM DEBTS AND LOANS FROM SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES	Network	*	*	http://www.sinopec.com/role/DisclosureShortTermAndLongTermDebtsAndLoansFromSinopecGroupCompanyAndFellowSubsidiaries
327	Implied Table	Table	*	*	implied:Table
328	SHORT-TERM AND LONG-TERM DEBTS AND LOANS FROM SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES [abstract]	Abstract			ifrs-full:DebtInstrumentsHeldAbstract
329	Disclosure of short-term and long-term debts and loans from Sinopec Group Company and fellow subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDebtSecuritiesExplanatory
330	12701 - Disclosure - TRADE ACCOUNTS AND BILLS PAYABLE	Network	*	*	http://www.sinopec.com/role/DisclosureTradeAccountsAndBillsPayable
331	Implied Table	Table	*	*	implied:Table
332	TRADE ACCOUNTS AND BILLS PAYABLE [abstract]	Abstract			snp:TradeAccountsAndBillsPayableAbstract
333	Disclosure of trade accounts and bills payable	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTradeAccountsAndBillsPayableExplanatoryTextBlock
334	12801 - Disclosure - CONTRACT LIABILITIES	Network	*	*	http://www.sinopec.com/role/DisclosureContractLiabilities
335	Implied Table	Table	*	*	implied:Table
336	CONTRACT LIABILITIES [abstract]	Abstract			ifrs-full:ContractLiabilitiesAbstract
337	Disclosure of contract liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfRevenueFromContractsWithCustomersExplanatory
338	12901 - Disclosure - OTHER PAYABLES	Network	*	*	http://www.sinopec.com/role/DisclosureOtherPayables
339	Implied Table	Table	*	*	implied:Table
340	OTHER PAYABLES	Abstract			snp:AccruedExpensesAndOtherPayablesAbstract
341	Disclosure of other payables	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherCurrentLiabilitiesExplanatory
342	13001 - Disclosure - PROVISIONS	Network	*	*	http://www.sinopec.com/role/DisclosureProvisions
343	Implied Table	Table	*	*	implied:Table
344	PROVISIONS [abstract]	Abstract			ifrs-full:ProvisionsAbstract
345	Disclosure of provisions	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfProvisionsExplanatory
346	13101 - Disclosure - SHARE CAPITAL	Network	*	*	http://www.sinopec.com/role/DisclosureShareCapital
347	Implied Table	Table	*	*	implied:Table
348	SHARE CAPITAL [abstract]	Abstract			ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
349	Disclosure of share capital	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
350	13201 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilities
351	Implied Table	Table	*	*	implied:Table
352	COMMITMENTS AND CONTINGENT LIABILITIES [abstract]	Abstract			snp:CommitmentsAndContingentLiabilitiesAbstract
353	Disclosure of commitments and contingent liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
354	13301 - Disclosure - BUSINESS COMBINATION	Network	*	*	http://www.sinopec.com/role/DisclosureBusinessCombination
355	Implied Table	Table	*	*	implied:Table
356	BUSINESS COMBINATION [abstract]	Abstract			ifrs-full:DisclosureOfBusinessCombinationsAbstract
357	Disclosure of business combination	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBusinessCombinationsExplanatory
358	13401 - Disclosure - RELATED PARTY TRANSACTIONS	Network	*	*	http://www.sinopec.com/role/DisclosureRelatedPartyTransactions
359	Implied Table	Table	*	*	implied:Table
360	RELATED PARTY TRANSACTIONS [abstract]	Abstract			ifrs-full:RelatedPartyTransactionsAbstract
361	Disclosure of related party transactions	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
362	13501 - Disclosure - EMPLOYEE BENEFITS PLAN	Network	*	*	http://www.sinopec.com/role/DisclosureEmployeeBenefitsPlan
363	Implied Table	Table	*	*	implied:Table
364	EMPLOYEE BENEFITS PLAN [abstract]	Abstract			ifrs-full:ClassesOfEmployeeBenefitsExpenseAbstract
365	Disclosure of employee benefits plan	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
366	13601 - Disclosure - SEGMENT REPORTING	Network	*	*	http://www.sinopec.com/role/DisclosureSegmentReporting
367	Implied Table	Table	*	*	implied:Table
368	SEGMENT REPORTING [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
369	Disclosure of segment reporting	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOperatingSegmentsExplanatory
370	13701 - Disclosure - PRINCIPAL SUBSIDIARIES	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalSubsidiaries
371	Implied Table	Table	*	*	implied:Table
372	PRINCIPAL SUBSIDIARIES [abstract]	Abstract			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesAbstract
373	Disclosure of principal subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesExplanatory
374	13801 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValues
375	Implied Table	Table	*	*	implied:Table
376	FINANCIAL RISK MANAGEMENT AND FAIR VALUES [abstract]	Abstract			snp:FinancialRiskManagementAndFairValuesAbstract
377	Disclosure of financial risk management and fair values	Concept (Text Block (HTML))	For Period		snp:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsAndFairValueOfFinancialInstrumentsExplanatory
378	13901 - Disclosure - ACCOUNTING ESTIMATES AND JUDGMENTS	Network	*	*	http://www.sinopec.com/role/DisclosureAccountingEstimatesAndJudgments
379	Implied Table	Table	*	*	implied:Table
380	ACCOUNTING ESTIMATES AND JUDGMENTS [abstract]	Abstract			snp:AccountingEstimatesAndJudgmentsAbstract
381	Disclosure of accounting estimates and judgments	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
382	14001 - Disclosure - PARENT AND ULTIMATE HOLDING COMPANY	Network	*	*	http://www.sinopec.com/role/DisclosureParentAndUltimateHoldingCompany
383	Implied Table	Table	*	*	implied:Table
384	PARENT AND ULTIMATE HOLDING COMPANY [abstract]	Abstract			snp:ParentAndUltimateHoldingCompanyAbstract
385	Disclosure of parent and ultimate holding company	Concept (Text Block (HTML))	For Period		snp:DisclosureOfParentAndUltimateHoldingCompanyExplanatory
386	14101 - Disclosure - RESERVES	Network	*	*	http://www.sinopec.com/role/DisclosureReserves
387	Implied Table	Table	*	*	implied:Table
388	RESERVES [abstract]	Abstract			ifrs-full:DisclosureOfReservesWithinEquityAbstract
389	Disclosure of reserves	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfReservesAndOtherEquityInterestExplanatory
390	20202 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)	Network	*	*	http://www.sinopec.com/role/DisclosureSignificantAccountingPoliciesPolicies
391	Implied Table	Table	*	*	implied:Table
392	SIGNIFICANT ACCOUNTING POLICIES [abstract]	Abstract			snp:SignificantAccountingPoliciesAbstract
393	Basis of consolidation	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfBasisOfConsolidationExplanatory
394	Translation of foreign currencies	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
395	Cash and cash equivalents	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
396	Trade, bills and other receivables	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherReceivablesExplanatory
397	Inventories	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
398	Property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForPropertyPlantAndEquipmentExplanatory
399	Oil and gas properties	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForOilAndGasAssetsExplanatory
400	Lease prepayments	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForLeasesExplanatory
401	Construction in progress	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForConstructionInProgressExplanatory
402	Goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
403	Financial assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialAssetsExplanatory
404	Financial liabilities	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFinancialLiabilitiesExplanatory
405	Determination of fair value for financial instruments	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory
406	Derivative financial instruments and hedge accounting	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
407	Impairment of assets	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfAssetsExplanatory
408	Trade, bills and other payables	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
409	Interest-bearing borrowings	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBorrowingsExplanatory
410	Provisions and contingent liability	Concept (Text Block (HTML))	For Period		snp:DescriptionOfAccountingPolicyForProvisionsAndContingentLiabilityExplanatory
411	Revenue recognition	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
412	Government grants	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForGovernmentGrants
413	Borrowing costs	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForBorrowingCostsExplanatory
414	Repairs and maintenance expenditure	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForRepairsAndMaintenanceExplanatory
415	Environmental expenditures	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory
416	Research and development expense	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForResearchAndDevelopmentExpenseExplanatory
417	Operating leases	Concept (Text Block (HTML))	For Period		snp:DescriptionOfAccountingPolicyForOperatingLeasesExplanatory
418	Employee benefits	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
419	Income tax	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
420	Dividends	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForDividendsExplanatory
421	Segment reporting	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfAccountingPolicyForSegmentReportingExplanatory
422	30103 - Schedule - PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION (Tables)	Network	*	*	http://www.sinopec.com/role/SchedulePrincipalActivitiesOrganizationAndBasisOfPreparationTables
423	Implied Table	Table	*	*	implied:Table
424	PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION [abstract]	Abstract			snp:PrincipalActivitiesOrganizationAndBasisOfPreparationAbstract
425	Schedule of adjustments from new accounting policies	Concept (Text Block (HTML))	For Period		ifrs-full:DescriptionOfInitialApplicationOfStandardsOrInterpretations
426	30203 - Schedule - SIGNIFICANT ACCOUNTING POLICIES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleSignificantAccountingPoliciesTables
427	Implied Table	Table	*	*	implied:Table
428	SIGNIFICANT ACCOUNTING POLICIES [abstract]	Abstract			snp:SignificantAccountingPoliciesAbstract
429	Disclosure of detailed information about property, plant and equipment	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
430	30303 - Schedule - SALES OF GOODS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleSalesOfGoodsTables
431	Implied Table	Table	*	*	implied:Table
432	SALES OF GOODS [abstract]	Abstract			ifrs-full:AnalysisOfIncomeAndExpenseAbstract
433	Schedule of sales of goods	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSalesOfGoodsExplanatory
434	30403 - Schedule - OTHER OPERATING REVENUES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleOtherOperatingRevenuesTables
435	Implied Table	Table	*	*	implied:Table
436	OTHER OPERATING REVENUES [abstract]	Abstract			snp:OtherOperatingRevenuesAbstract
437	Schedule of other operating revenues	Concept (Text Block (HTML))	For Period		snp:DisclosureOfOtherOperatingRevenuesTableExplanatory
438	30503 - Schedule - SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleSellingGeneralAndAdministrativeExpensesTables
439	Implied Table	Table	*	*	implied:Table
440	SELLING, GENERAL AND ADMINISTRATIVE EXPENSES [abstract]	Abstract			ifrs-full:SellingGeneralAndAdministrativeExpenseAbstract
441	Schedule of selling, general and administrative expenses	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSellingGeneralAndAdministrativeExpensesTableExplanatory
442	30603 - Schedule - PERSONNEL EXPENSES (Tables)	Network	*	*	http://www.sinopec.com/role/SchedulePersonnelExpensesTables
443	Implied Table	Table	*	*	implied:Table
444	PERSONNEL EXPENSES [abstract]	Abstract			snp:PersonnelExpensesAbstract
445	Schedule of personnel expenses	Concept (Text Block (HTML))	For Period		snp:DisclosureOfPersonnelExpensesTableExplanatory
446	30703 - Schedule - TAXES OTHER THAN INCOME TAX (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleTaxesOtherThanIncomeTaxTables
447	Implied Table	Table	*	*	implied:Table
448	TAXES OTHER THAN INCOME TAX [abstract]	Abstract			snp:TaxesOtherThanIncomeTaxAbstract
449	Schedule of taxes other than income tax	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTaxesOtherThanIncomeTaxTableExplanatory
450	Schedule of detailed information of consumption tax	Concept (Text Block (HTML))	For Period		snp:DisclosureOfDetailedInformationOfConsumptionTaxTableExplanatory
451	30803 - Schedule - OTHER OPERATING INCOME/(EXPENSE), NET (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleOtherOperatingIncomeExpenseNetTables
452	Implied Table	Table	*	*	implied:Table
453	OTHER OPERATING INCOME/(EXPENSE), NET [abstract]	Abstract			snp:OtherOperatingExpenseAbstract
454	Schedule of other operating income/(expense), net	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfOtherOperatingIncomeExpenseExplanatory
455	30903 - Schedule - INTEREST EXPENSE (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleInterestExpenseTables
456	Implied Table	Table	*	*	implied:Table
457	INTEREST EXPENSE [abstract]	Abstract			ifrs-full:InterestCostsAbstract
458	Schedule of interest expense	Concept (Text Block (HTML))	For Period		snp:DisclosureOfInterestExpenseTableExplanatory
459	31003 - Schedule - INCOME TAX EXPENSE (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleIncomeTaxExpenseTables
460	Implied Table	Table	*	*	implied:Table
461	INCOME TAX EXPENSE [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
462	Schedule of income tax expense on consolidated statement of income	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTaxExpensesInConsolidatedStatementOfIncomeTableExplanatory
463	Schedule of reconciliation between actual income tax and expected income tax expense	Concept (Text Block (HTML))	For Period		snp:DisclosureOfReconciliationBetweenActualIncomeTaxAndExpectedIncomeTaxExpensesTableExplanatory
464	31103 - Schedule - OTHER COMPREHENSIVE INCOME (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleOtherComprehensiveIncomeTables
465	Implied Table	Table	*	*	implied:Table
466	OTHER COMPREHENSIVE INCOME [abstract]	Abstract			ifrs-full:OtherComprehensiveIncomeAbstract
467	Schedule of other comprehensive income	Concept (Text Block (HTML))	For Period		snp:DisclosureOfOtherComprehensiveIncomeTableExplanatory
468	31203 - Schedule - BASIC AND DILUTED EARNINGS PER SHARE (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleBasicAndDilutedEarningsPerShareTables
469	Implied Table	Table	*	*	implied:Table
470	BASIC AND DILUTED EARNINGS PER SHARE [abstract]	Abstract			ifrs-full:BasicAndDilutedEarningsPerShareAbstract
471	Schedule of net income attributable to ordinary owners of Company (diluted)	Concept (Text Block (HTML))	For Period		snp:NetIncomeAttributableToOrdinaryOwnersOfCompanyDilutedTableExplanatory
472	Schedule of weighted average number of shares (diluted)	Concept (Text Block (HTML))	For Period		snp:WeightedAverageNumberOfSharesDilutedTableExplanatory
473	31303 - Schedule - FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleFinancialAssetsAtFairValueThroughProfitOrLossTables
474	Implied Table	Table	*	*	implied:Table
475	FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS [abstract]	Abstract			ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossAbstract
476	Schedule of financial assets at fair value through profit or loss	Concept (Text Block (HTML))	For Period		snp:DisclosureOfFinancialAssetsAtFairValueThroughProfitOrLossTableTextBlock
477	31503 - Schedule - TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleTradeAccountsReceivableAndBillsReceivableTables
478	Implied Table	Table	*	*	implied:Table
479	TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE [abstract]	Abstract			snp:TradeAccountsReceivableAndBillsReceivableAbstract
480	Schedule of Trade accounts receivable and bills receivable	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTradeAccountsReceivableAndBillsReceivableTableTextBlock
481	Schedule of ageing analysis of trade accounts and bills receivables	Concept (Text Block (HTML))	For Period		snp:DisclosureOfAgeingAnalysisOfTradeAccountsAndBillsReceivables
482	Schedule of impairment losses for bad and doubtful debts	Concept (Text Block (HTML))	For Period		snp:DisclosureOfImpairmentLossesForBadAndDoubtfulDebtsTableExplanatory
483	31603 - Schedule - INVENTORIES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleInventoriesTables
484	Implied Table	Table	*	*	implied:Table
485	INVENTORIES [abstract]	Abstract			ifrs-full:ClassesOfInventoriesAbstract
486	Schedule of inventories	Concept (Text Block (HTML))	For Period		snp:DisclosureOfInventoriesTableExplanatory
487	Schedule of allowance for diminution in value of inventories	Concept (Text Block (HTML))	For Period		snp:DisclosureOfAllowanceForDiminutionInValueOfInventoriesTableExplanatory
488	31703 - Schedule - PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)	Network	*	*	http://www.sinopec.com/role/SchedulePrepaidExpensesAndOtherCurrentAssetsTables
489	Implied Table	Table	*	*	implied:Table
490	PREPAID EXPENSES AND OTHER CURRENT ASSETS [abstract]	Abstract			snp:PrepaidExpensesAndOtherCurrentAssetsAbstract
491	Schedule of prepaid expenses and other current assets	Concept (Text Block (HTML))	For Period		snp:DisclosureOfPrepaidExpensesAndOtherCurrentAssetsTableExplanatory
492	31803 - Schedule - PROPERTY, PLANT AND EQUIPMENT (Tables)	Network	*	*	http://www.sinopec.com/role/SchedulePropertyPlantAndEquipmentTables
493	Implied Table	Table	*	*	implied:Table
494	PROPERTY, PLANT AND EQUIPMENT [abstract]	Abstract			ifrs-full:DisclosureOfPropertyPlantAndEquipmentAbstract
495	Schedule of detailed information about property, plant and equipment	Concept (Text Block (HTML))	For Period		snp:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentTableExplanatory
496	31903 - Schedule - CONSTRUCTION IN PROGRESS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleConstructionInProgressTables
497	Implied Table	Table	*	*	implied:Table
498	CONSTRUCTION IN PROGRESS [abstract]	Abstract			snp:ConstructionInProgressAbstract
499	Schedule of construction in progress	Concept (Text Block (HTML))	For Period		snp:DisclosureOfConstructionInProgressTableExplanatory
500	Schedule of net changes in capitalized cost of exploratory wells in E&P segment	Concept (Text Block (HTML))	For Period		snp:DisclosureOfNetChangesInCapitalizedCostOfExploratoryWellsInExplorationAndProductionSegmentTableExplanatory
501	Schedule of aging of capitalized exploratory well costs based on drilling completion date	Concept (Text Block (HTML))	For Period		snp:DisclosureOfAgingOfCapitalizedExploratoryWellCostsBasedOnDrillingCompletionDateTableExplanatory
502	32003 - Schedule - GOODWILL (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleGoodwillTables
503	Implied Table	Table	*	*	implied:Table
504	GOODWILL [abstract]	Abstract			snp:GoodwillAbstract
505	Schedule of goodwill	Concept (Text Block (HTML))	For Period		snp:DisclosureOfGoodwillTableExplanatory
506	Schedule of goodwill allocated to cash-generating units	Concept (Text Block (HTML))	For Period		snp:DisclosureOfInformationForGoodwillAllocatedToCashgeneratingUnitsTableExplanatory
507	32103 - Schedule - INTEREST IN ASSOCIATES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleInterestInAssociatesTables
508	Implied Table	Table	*	*	implied:Table
509	INTEREST IN ASSOCIATES [abstract]	Abstract			ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesAbstract
510	Schedule of principal associates	Concept (Text Block (HTML))	For Period		snp:DisclosureOfPrincipalAssociatesTableExplanatory
511	Schedule of reconciliation of summarised financial information of associate accounted for using equity method to carrying amount of interest in associate	Concept (Text Block (HTML))	For Period		snp:DisclosureOfReconciliationOfSummarisedFinancialInformationOfAssociateAccountedForUsingEquityMethodToCarryingAmountOfInterestInAssociateTableExplanatory
512	Schedule of summarised statement of comprehensive income of associates	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSummarisedStatementOfComprehensiveIncomeOfAssociatesTableExplanatory
513	32203 - Schedule - INTEREST IN JOINT VENTURES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleInterestInJointVenturesTables
514	Implied Table	Table	*	*	implied:Table
515	INTEREST IN JOINT VENTURES [abstract]	Abstract			ifrs-full:DisclosureOfJointVenturesAbstract
516	Schedule of principal joint ventures	Concept (Text Block (HTML))	For Period		snp:DisclosureOfPrincipalJointVenturesTableExplanatory
517	Schedule of reconciliation of summarised financial information of joint venture accounted for using equity method to carrying amount of interest in joint venture	Concept (Text Block (HTML))	For Period		snp:DisclosureOfReconciliationOfSummarisedFinancialInformationOfJointVentureAccountedForUsingEquityMethodToCarryingAmountOfInterestInJointVentureTableExplanatory
518	Schedule of summarised statement of comprehensive income of joint ventures	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSummarisedStatementOfComprehensiveIncomeOfJointVenturesTableExplanatory
519	32303 - Schedule - DEFERRED TAX ASSETS AND LIABILITIES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleDeferredTaxAssetsAndLiabilitiesTables
520	Implied Table	Table	*	*	implied:Table
521	DEFERRED TAX ASSETS AND LIABILITIES [abstract]	Abstract			ifrs-full:DeferredTaxAssetsAndLiabilitiesAbstract
522	Schedule of deferred tax assets and liabilities	Concept (Text Block (HTML))	For Period		snp:DisclosureOfDeferredTaxAssetsAndLiabilitiesTableExplanatory
523	Schedule of movements in the deferred tax assets and liabilities	Concept (Text Block (HTML))	For Period		snp:DisclosureOfMovementsInDeferredTaxAssetsAndLiabilitiesTableExplanatory
524	32403 - Schedule - LEASE PREPAYMENTS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleLeasePrepaymentsTables
525	Implied Table	Table	*	*	implied:Table
526	LEASE PREPAYMENTS [abstract]	Abstract			snp:LeasePrepaymentsAbstract
527	Schedule of lease prepayments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfLeasePrepaymentTableExplanatory
528	32503 - Schedule - LONG-TERM PREPAYMENTS AND OTHER ASSETS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleLongTermPrepaymentsAndOtherAssetsTables
529	Implied Table	Table	*	*	implied:Table
530	LONG-TERM PREPAYMENTS AND OTHER ASSETS [abstract]	Abstract			snp:LongtermPrepaymentsAndOtherAssetsAbstract
531	Schedule of long-term prepayments and other assets	Concept (Text Block (HTML))	For Period		snp:DisclosureOfLongtermPrepaymentsAndOtherAssetsTableExplanatory
532	Schedule of operating rights of service stations	Concept (Text Block (HTML))	For Period		snp:DisclosureOfOperatingRightsOfServiceStationsTableExplanatory
533	32603 - Schedule - SHORT-TERM AND LONG-TERM DEBTS AND LOANS FROM SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleShortTermAndLongTermDebtsAndLoansFromSinopecGroupCompanyAndFellowSubsidiariesTables
534	Implied Table	Table	*	*	implied:Table
535	SHORT-TERM AND LONG-TERM DEBTS AND LOANS FROM SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES [abstract]	Abstract			ifrs-full:DebtInstrumentsHeldAbstract
536	Schedule of short-term debts	Concept (Text Block (HTML))	For Period		snp:DisclosureOfShortTermDebtsTableExplanatory
537	Schedule of long-term debts	Concept (Text Block (HTML))	For Period		snp:DisclosureOfLongtermDebtsTableExplanatory
538	32703 - Schedule - TRADE ACCOUNTS AND BILLS PAYABLE (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleTradeAccountsAndBillsPayableTables
539	Implied Table	Table	*	*	implied:Table
540	TRADE ACCOUNTS AND BILLS PAYABLE [abstract]	Abstract			snp:TradeAccountsAndBillsPayableAbstract
541	Schedule of trade accounts and bills payable	Concept (Text Block (HTML))	For Period		snp:DisclosureOfTradeAccountsAndBillsPayableTableExplanatory
542	32903 - Schedule - OTHER PAYABLES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleOtherPayablesTables
543	Implied Table	Table	*	*	implied:Table
544	OTHER PAYABLES	Abstract			snp:AccruedExpensesAndOtherPayablesAbstract
545	Schedule of other payables	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfAccruedExpensesAndOtherLiabilitiesExplanatory
546	33003 - Schedule - PROVISIONS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleProvisionsTables
547	Implied Table	Table	*	*	implied:Table
548	PROVISIONS [abstract]	Abstract			ifrs-full:ProvisionsAbstract
549	Schedule of provisions	Concept (Text Block (HTML))	For Period		snp:DisclosureOfProvisionsTableExplanatory
550	33103 - Schedule - SHARE CAPITAL (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleShareCapitalTables
551	Implied Table	Table	*	*	implied:Table
552	SHARE CAPITAL [abstract]	Abstract			ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
553	Schedule of share capital	Concept (Text Block (HTML))	For Period		snp:DisclosureOfClassesOfShareCapitalTableExplanatory
554	33203 - Schedule - COMMITMENTS AND CONTINGENT LIABILITIES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleCommitmentsAndContingentLiabilitiesTables
555	Implied Table	Table	*	*	implied:Table
556	COMMITMENTS AND CONTINGENT LIABILITIES [abstract]	Abstract			snp:CommitmentsAndContingentLiabilitiesAbstract
557	Schedule of operating lease commitments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfCommitmentsAndContingentLiabilitiesTableExplanatory
558	Schedule of capital commitments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfCapitalCommitmentsTableExplanatory
559	Schedule of estimated future annual payments of exploration and production licenses	Concept (Text Block (HTML))	For Period		snp:DisclosureOfEstimatedFutureAnnualPaymentsTableExplanatory
560	Schedule of contingent liabilities	Concept (Text Block (HTML))	For Period		snp:DisclosureOfContingentLiabilitiesInBusinessCombinationTableExplanatory
561	33303 - Schedule - BUSINESS COMBINATION (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleBusinessCombinationTables
562	Implied Table	Table	*	*	implied:Table
563	BUSINESS COMBINATION [abstract]	Abstract			ifrs-full:DisclosureOfBusinessCombinationsAbstract
564	Schedule of details of the purchase consideration, the net assets acquired and goodwill	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
565	33403 - Schedule - RELATED PARTY TRANSACTIONS (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleRelatedPartyTransactionsTables
566	Implied Table	Table	*	*	implied:Table
567	RELATED PARTY TRANSACTIONS [abstract]	Abstract			ifrs-full:RelatedPartyTransactionsAbstract
568	Schedule of related party transactions	Concept (Text Block (HTML))	For Period		snp:DisclosureOfRelatedPartyTransactionsTableExplanatory
569	Schedule of amount due from/to related parties	Concept (Text Block (HTML))	For Period		snp:DisclosureOfAmountsDueFromToRelatedPartiesTableExplanatory
570	Schedule of key management personnel emoluments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfKeyManagementPersonnelEmolumentsTableExplanatory
571	33603 - Schedule - SEGMENT REPORTING (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleSegmentReportingTables
572	Implied Table	Table	*	*	implied:Table
573	SEGMENT REPORTING [abstract]	Abstract			ifrs-full:DisclosureOfOperatingSegmentsAbstract
574	Schedule of operating segments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfOperatingSegmentsTableExplanatory
575	Schedule of capital expenditure of operating segments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfCapitalExpenditureOfOperatingSegmentsTableExplanatory
576	Schedule of geographical information of operating segments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfGeographicalInformationOfOperatingSegmentsTableExplanatory
577	33703 - Schedule - PRINCIPAL SUBSIDIARIES (Tables)	Network	*	*	http://www.sinopec.com/role/SchedulePrincipalSubsidiariesTables
578	Implied Table	Table	*	*	implied:Table
579	PRINCIPAL SUBSIDIARIES [abstract]	Abstract			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesAbstract
580	Schedule of principal subsidiaries	Concept (Text Block (HTML))	For Period		ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory
581	Schedule of summarized consolidated balance sheet	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSummarizedConsolidatedBalanceSheetTableExplanatory
582	Schedule of summarized consolidated statement of comprehensive income	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSummarizedConsolidatedStatementOfComprehensiveIncomeTableExplanatory
583	Schedule of summarized statement of cash flows	Concept (Text Block (HTML))	For Period		snp:DisclosureOfSummarizedStatementOfCashFlowsTableExplanatory
584	33803 - Schedule - FINANCIAL RISK MANAGEMENT AND FAIR VALUES (Table)	Network	*	*	http://www.sinopec.com/role/ScheduleFinancialRiskManagementAndFairValuesTable
585	Implied Table	Table	*	*	implied:Table
586	FINANCIAL RISK MANAGEMENT AND FAIR VALUES [abstract]	Abstract			snp:FinancialRiskManagementAndFairValuesAbstract
587	Schedule of liquidity risk	Concept (Text Block (HTML))	For Period		snp:DisclosureOfLiquidityRiskTableExplanatory
588	Schedule of currency risk	Concept (Text Block (HTML))	For Period		snp:DisclosureOfCurrencyRiskTableExplanatory
589	Schedule of analysis of currency risk	Concept (Text Block (HTML))	For Period		snp:DisclosureOfAnalysisOfCurrencyRiskTableExplanatory
590	Schedule of fair values of financial instruments	Concept (Text Block (HTML))	For Period		snp:DisclosureOfFairValuesOfFinancialInstrumentsTableExplanatory
591	34103 - Schedule - RESERVES (Tables)	Network	*	*	http://www.sinopec.com/role/ScheduleReservesTables
592	Implied Table	Table	*	*	implied:Table
593	RESERVES [abstract]	Abstract			ifrs-full:DisclosureOfReservesWithinEquityAbstract
594	Schedule of reserves	Concept (Text Block (HTML))	For Period		snp:DisclosureOfReservesTableExplanatory
595	40101 - Disclosure - PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalActivitiesOrganizationAndBasisOfPreparationDetails
596	Implied Table	Table	*	*	implied:Table
597	PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION [abstract]	Abstract			snp:PrincipalActivitiesOrganizationAndBasisOfPreparationAbstract
598	Number of shares issued	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssued
599	Par value per share	Concept (Share)	As Of		ifrs-full:ParValuePerShare
600	40102 - Disclosure - PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION - NEW AND AMENDED STANDARDS AND INTERPRETATIONS ADOPTED BY THE GROUP (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalActivitiesOrganizationAndBasisOfPreparationNewAndAmendedStandardsAndInterpretationsAdoptedByGroupDetails
601	Disclosure of initial application of standards or interpretations [table]	Table	*	*	ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
602	Initially applied IFRSs [axis]	Axis			ifrs-full:InitiallyAppliedIFRSsAxis
603	Initially applied IFRSs [member]	Member			ifrs-full:InitiallyAppliedIFRSsMember
604	Adjustment from Adoption of IFRS 9	Member			snp:IncreaseDecreaseDueToApplicationOfIfrs9Member
605	Adjustment from Adoption of IFRS 15	Member			ifrs-full:IncreaseDecreaseDueToApplicationOfIFRS15Member
606	Disclosure of initial application of standards or interpretations [line items]	LineItems			ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
607	Non-current assets	Abstract			ifrs-full:NoncurrentAssetsAbstract
608	Financial assets at fair value through other comprehensive income	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentFinancialAssetsAtFairValueThroughOtherComprehensiveIncome
609	Available-for-sale financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsAvailableforsale
610	Total non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
611	Current assets	Abstract			ifrs-full:CurrentAssetsAbstract
612	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
613	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
614	Contract liabilities(i)	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentContractLiabilities
615	Other payables(i)	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentAccruedExpensesAndOtherCurrentLiabilities
616	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
617	Non-current liabilities	Abstract			ifrs-full:NoncurrentLiabilitiesAbstract
618	Total non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
619	Total equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
620	Equity	Abstract			ifrs-full:EquityAbstract
621	Other reserves	Concept (Monetary)	As Of	Credit	ifrs-full:OtherReserves
622	Retained earnings	Concept (Monetary)	As Of	Credit	ifrs-full:RetainedEarnings
623	Total equity	Concept (Monetary)	As Of	Credit	ifrs-full:Equity
624	40103 - Disclosure - PRINCIPAL ACTIVITIES, ORGANIZATION AND BASIS OF PREPARATION - NEW AND AMENDED STANDARDS AND INTERPRETATIONS NOT YET ADOPTED BY THE GROUP (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalActivitiesOrganizationAndBasisOfPreparationNewAndAmendedStandardsAndInterpretationsNotYetAdoptedByGroupDetails
625	Disclosure of initial application of standards or interpretations [table]	Table	*	*	ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsTable
626	Initially applied IFRSs [axis]	Axis			ifrs-full:InitiallyAppliedIFRSsAxis
627	Initially applied IFRSs [member]	Member			ifrs-full:InitiallyAppliedIFRSsMember
628	IFRS 16	Member			snp:InAccordanceWithIfrs16Member
629	Restatement [Axis]	Axis			srt:RestatementAxis
630	Restatement [Domain]	Member			srt:RestatementDomain
631	Adjustment	Member			srt:RestatementAdjustmentMember
632	Disclosure of initial application of standards or interpretations [line items]	LineItems			ifrs-full:DisclosureOfInitialApplicationOfStandardsOrInterpretationsLineItems
633	Right-of-use assets	Concept (Monetary)	As Of	Debit	ifrs-full:RightofuseAssets
634	Lease liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:LeaseLiabilities
635	40201 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - PROPERTY, PLANT AND EQUIPMENT (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureSignificantAccountingPoliciesPropertyPlantAndEquipmentDetails
636	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
637	Range [axis]	Axis			ifrs-full:RangeAxis
638	Ranges [member]	Member			ifrs-full:RangesMember
639	Minimum	Member			ifrs-full:BottomOfRangeMember
640	Maximum	Member			ifrs-full:TopOfRangeMember
641	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
642	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
643	Buildings	Member			ifrs-full:BuildingsMember
644	Equipment, machinery and others [member]	Member			ifrs-full:OtherPropertyPlantAndEquipmentMember
645	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
646	Estimated usage period	Concept (xbrli:durationItemType)	For Period		snp:EstimatedUsagePeriodOfPropertyPlantAndEquipment
647	Estimated residuals rate	Concept (Percent)	For Period		snp:EstimatedResidualsRateOfPropertyPlantAndEquipment
648	40202 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - FINANCIAL ASSETS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureSignificantAccountingPoliciesFinancialAssetsDetails
649	Implied Table	Table	*	*	implied:Table
650	SIGNIFICANT ACCOUNTING POLICIES [abstract]	Abstract			snp:SignificantAccountingPoliciesAbstract
651	Credit losses period measured	Concept (xbrli:durationItemType)	For Period		snp:PeriodCreditLossAllowanceMeasured
652	40203 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - RESEARCH AND DEVELOPMENT EXPENSE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureSignificantAccountingPoliciesResearchAndDevelopmentExpenseDetails
653	Implied Table	Table	*	*	implied:Table
654	SIGNIFICANT ACCOUNTING POLICIES [abstract]	Abstract			snp:SignificantAccountingPoliciesAbstract
655	Research and development expense	Concept (Monetary)	For Period	Debit	ifrs-full:ResearchAndDevelopmentExpense
656	40301 - Disclosure - SALES OF GOODS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureSalesOfGoodsDetails
657	Disclosure of Sales of Goods [Table]	Table	*	*	snp:DisclosureOfSalesOfGoodsTable
658	Products and services [axis]	Axis			ifrs-full:ProductsAndServicesAxis
659	Products and services [member]	Member			ifrs-full:ProductsAndServicesMember
660	Crude Oil	Member			snp:IfrsCrudeOilMember
661	Gasoline	Member			snp:GasolineMember
662	Diesel	Member			snp:DieselMember
663	Basic chemical feedstock [Member]	Member			snp:BasicChemicalFeedstockMember
664	Kerosene [Member]	Member			snp:KeroseneMember
665	Synthetic resin [Member]	Member			snp:SyntheticResinMember
666	Natural Gas [Member]	Member			srt:NaturalGasReservesMember
667	Synthetic fiber monomers and polymers [Member]	Member			snp:SyntheticFiberMonomersAndPolymersMember
668	Others [Member]	Member			snp:OtherGoodsMember
669	Sales of goods	LineItems			snp:DisclosureOfSalesOfGoodsLineItems
670	Sales of goods	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromSaleOfGoods
671	40401 - Disclosure - OTHER OPERATING REVENUES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureOtherOperatingRevenuesDetails
672	Implied Table	Table	*	*	implied:Table
673	OTHER OPERATING REVENUES [abstract]	Abstract			snp:OtherOperatingRevenuesAbstract
674	Sale of materials and others	Concept (Monetary)	For Period	Credit	snp:SaleOfMaterialsAndOthers
675	Rental income	Concept (Monetary)	For Period	Credit	ifrs-full:RentalIncome
676	Other operating revenues	Concept (Monetary)	For Period	Credit	snp:OtherOperatingRevenues
677	40501 - Disclosure - SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureSellingGeneralAndAdministrativeExpensesDetails
678	Implied Table	Table	*	*	implied:Table
679	SELLING, GENERAL AND ADMINISTRATIVE EXPENSES [abstract]	Abstract			ifrs-full:SellingGeneralAndAdministrativeExpenseAbstract
680	Operating lease charges	Concept (Monetary)	For Period	Debit	snp:OperatingLeaseCharges
681	Auditor's remuneration:	Abstract			ifrs-full:AuditorsRemunerationAbstract
682	audit services	Concept (Monetary)	For Period	Debit	ifrs-full:AuditorsRemunerationForAuditServices
683	others	Concept (Monetary)	For Period	Debit	ifrs-full:AuditorsRemunerationForOtherServices
684	Impairment losses	Abstract			snp:DisclosureOfImpairmentLossOnSellingGeneralAndAdministrativeExpenseAbstract
685	trade accounts receivable	Concept (Monetary)	For Period	Debit	ifrs-full:ImpairmentLossRecognisedInProfitOrLossTradeReceivables
686	other receivables	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossRecognisedInProfitOrLossOtherReceivables
687	accounts prepayments	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossRecognisedInProfitOrLossAccountsPrepayments
688	40601 - Disclosure - PERSONNEL EXPENSES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePersonnelExpensesDetails
689	Implied Table	Table	*	*	implied:Table
690	PERSONNEL EXPENSES [abstract]	Abstract			snp:PersonnelExpensesAbstract
691	Salaries, wages and other benefits	Concept (Monetary)	For Period	Debit	snp:SalariesWagesAndOtherBenefits
692	Contributions to retirement schemes (Note 35)	Concept (Monetary)	For Period	Debit	ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
693	Personnel expenses	Concept (Monetary)	For Period	Debit	ifrs-full:EmployeeBenefitsExpense
694	40701 - Disclosure - TAXES OTHER THAN INCOME TAX (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTaxesOtherThanIncomeTaxDetails
695	Implied Table	Table	*	*	implied:Table
696	TAXES OTHER THAN INCOME TAX [abstract]	Abstract			snp:TaxesOtherThanIncomeTaxAbstract
697	Consumption tax	Concept (Monetary)	For Period	Debit	snp:ConsumptionTax
698	City construction tax	Concept (Monetary)	For Period	Debit	snp:CityConstructionTax
699	Education surcharge	Concept (Monetary)	For Period	Debit	snp:EducationSurcharge
700	Resources tax	Concept (Monetary)	For Period	Debit	snp:ResourcesTax
701	Other	Concept (Monetary)	For Period	Debit	snp:OtherTaxesOtherThanIncomeTax
702	Taxes other than income tax	Concept (Monetary)	For Period	Debit	ifrs-full:TaxExpenseOtherThanIncomeTaxExpense
703	40702 - Disclosure - TAXES OTHER THAN INCOME TAX - CONSUMPTION TAX (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTaxesOtherThanIncomeTaxConsumptionTaxDetails
704	Disclosure of Petroleum Reserves [table]	Table	*	*	snp:DisclosureOfPetroleumReservesTable
705	Reserves types [axis]	Axis			snp:ReservesTypesAxis
706	Reserves [member]	Member			snp:ReservesMember
707	Gasoline	Member			snp:GasolineMember
708	Diesel	Member			snp:DieselMember
709	Naphtha	Member			snp:NaphthaMember
710	Solvent oil	Member			snp:SolventOilMember
711	Lubricant oil	Member			snp:LubricantOilMember
712	Fuel oil	Member			snp:FuelOilMember
713	Jet fuel oil	Member			snp:JetFuelOilMember
714	Disclosure of Petroleum reserves [line items]	LineItems			snp:DisclosureOfPetroleumReservesLineItems
715	Tax Rate of Products	Concept (Per Unit)	As Of		snp:ConsumptionTaxRateOfProducts
716	40703 - Disclosure - TAXES OTHER THAN INCOME TAX - CITY CONSTRUCTION TAX (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTaxesOtherThanIncomeTaxCityConstructionTaxDetails
717	Disclosure of city construction tax and resources tax [table]	Table	*	*	snp:DisclosureOfCityConstructionTaxAndResourcesTaxTable
718	Range [axis]	Axis			ifrs-full:RangeAxis
719	Ranges [member]	Member			ifrs-full:RangesMember
720	Minimum	Member			ifrs-full:BottomOfRangeMember
721	Maximum	Member			ifrs-full:TopOfRangeMember
722	Disclosure of city construction tax and resources tax [line items]	LineItems			snp:DisclosureOfCityConstructionTaxAndResourcesTaxLineItems
723	Applicable tax rate	Concept (Percent)	For Period		ifrs-full:ApplicableTaxRate
724	Business tax rate	Concept (Percent)	For Period		snp:BusinessTaxRate
725	40801 - Disclosure - OTHER OPERATING INCOME/(EXPENSE), NET (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureOtherOperatingIncomeExpenseNetDetails
726	Implied Table	Table	*	*	implied:Table
727	OTHER OPERATING INCOME/(EXPENSE), NET [abstract]	Abstract			snp:OtherOperatingExpenseAbstract
728	Government grant (i)	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromGovernmentGrants
729	Ineffective portion of change in fair value of cash flow hedges	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossOnHedgeIneffectivenessRecognisedInProfitOrLoss
730	Net realized and unrealized gain/(loss) on derivative financial instruments not qualified as hedging	Concept (Monetary)	For Period	Credit	snp:NetRealizedAndUnrealizedGainLossOnDerivativeFinancialInstrumentsNotQualifiedAsHedging
731	Impairment losses on long-lived assets (ii)	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossesOnLonglivedAssets
732	Loss on disposal of property, plant, equipment and other non-currents assets, net	Concept (Monetary)	For Period	Debit	snp:LossOnDisposalOfPropertyPlantEquipmentAndOtherNoncurrentAssetsNet
733	Fines, penalties and compensations	Concept (Monetary)	For Period	Debit	snp:ExpenseOfFinesPenaltiesAndCompensations
734	Donations	Concept (Monetary)	For Period	Debit	ifrs-full:DonationsAndSubsidiesExpense
735	Gain on remeasurement of interests in the Shanghai SECCO (Note 33)	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossRecognisedAsResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombination
736	Gain on dilution and remeasurement of interests in the Pipeline Ltd	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossOnCessationOfConsolidationOfSubsidiariesDueToChangeOfInvestmentEntityStatus
737	Others	Concept (Monetary)	For Period	Debit	ifrs-full:MiscellaneousOtherOperatingExpense
738	Other operating expenses, total	Concept (Monetary)	For Period	Credit	ifrs-full:OtherOperatingIncomeExpense
739	40802 - Disclosure - OTHER OPERATING INCOME/(EXPENSE), NET - IMPAIRMENT LOSSES ON LONG-LIVED ASSETS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureOtherOperatingIncomeExpenseNetImpairmentLossesOnLongLivedAssetsDetails
740	Disclosure of impairment loss recognised or reversed [table]	Table	*	*	ifrs-full:DisclosureOfImpairmentLossRecognisedOrReversedTable
741	Segments [axis]	Axis			ifrs-full:SegmentsAxis
742	Segments [member]	Member			ifrs-full:SegmentsMember
743	Exploration and production	Member			snp:ExplorationAndProductionMember
744	Chemicals segment	Member			snp:ChemicalsSegmentMember
745	Refining segment	Member			snp:RefiningSegmentMember
746	Marketing and distribution	Member			snp:MarketingAndDistributionMember
747	Corporate and others	Member			snp:CorporateAndOthersMember
748	Classes of assets [axis]	Axis			ifrs-full:ClassesOfAssetsAxis
749	Assets [member]	Member			ifrs-full:ClassesOfAssetsMember
750	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
751	Investment in associates	Member			snp:InvestmentInAssociatesMember
752	Investment in joint ventures	Member			snp:InvestmentInJointVentureMember
753	Construction in progress	Member			ifrs-full:ConstructionInProgressMember
754	Goodwill	Member			ifrs-full:GoodwillMember
755	Available for sale financial assets	Member			ifrs-full:FinancialAssetsAvailableforsaleCategoryMember
756	Intangible assets [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
757	Investment in associates and joint ventures	Member			ifrs-full:InvestmentsAccountedForUsingEquityMethodMember
758	Lease prepayment	Member			snp:LeasePrepaymentMember
759	Classes of liabilities [axis]	Axis			ifrs-full:ClassesOfLiabilitiesAxis
760	Liabilities [member]	Member			ifrs-full:LiabilitiesMember
761	Entrusted loan	Member			snp:EntrustedLoanMember
762	Disclosure of impairment loss recognised or reversed [line items]	LineItems			ifrs-full:DisclosureOfImpairmentLossRecognisedOrReversedLineItems
763	Impairment losses recognized on long-lived assets	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossesOnLonglivedAssets
764	Impairment losses on entrusted loan	Concept (Monetary)	As Of	Debit	snp:ImpairmentLossesOnEntrustedLoan
765	Pre-tax discount rate	Concept (Percent)	As Of		ifrs-full:DescriptionOfDiscountRatesUsedInPreviousEstimateOfValueInUse
766	Estimated decrease rate of oil price	Concept (Percent)	As Of		snp:EstimatedDecreaseRateOfOilPrice
767	Impairment loss due to estimated decrease rate of oil price	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossDueToEstimatedDecreaseRateOfOilPrice
768	Estimated increase rate of operating cost	Concept (Percent)	As Of		snp:EstimatedIncreaseRateOfOperatingCost
769	Impairment loss due to estimated increase rate of operating cost	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossDueToEstimatedIncreaseRateOfOperatingCost
770	Estimated increase discount rate	Concept (Percent)	As Of		snp:EstimatedIncreaseDiscountRate
771	Impairment loss due to estimated increase discount rate	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossDueToEstimatedIncreaseDiscountRate
772	40901 - Disclosure - INTEREST EXPENSE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestExpenseDetails
773	Interest expense [table]	Table	*	*	ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
774	Range [axis]	Axis			ifrs-full:RangeAxis
775	Ranges [member]	Member			ifrs-full:RangesMember
776	Maximum	Member			ifrs-full:TopOfRangeMember
777	Minimum	Member			ifrs-full:BottomOfRangeMember
778	Interest expense [line items]	LineItems			ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
779	Interest expense incurred	Concept (Monetary)	For Period		ifrs-full:InterestCostsIncurred
780	Less: Interest expense capitalized	Concept (Monetary)	For Period		ifrs-full:InterestCostsCapitalised
781	Interest expense, gross amount	Concept (Monetary)	For Period	Debit	snp:InterestExpenseGrossAmount
782	Accretion expenses (Note 30)	Concept (Monetary)	For Period	Debit	snp:AccretionExpenses
783	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
784	Interest rates per annum at which borrowing costs were capitalized for construction in progress	Concept (Percent)	For Period		ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
785	41001 - Disclosure - INCOME TAX EXPENSE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureIncomeTaxExpenseDetails
786	Implied Table	Table	*	*	implied:Table
787	INCOME TAX EXPENSE [abstract]	Abstract			ifrs-full:MajorComponentsOfTaxExpenseIncomeAbstract
788	Current tax	Abstract			ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriodsAbstract
789	Provision for the year	Concept (Monetary)	For Period	Debit	ifrs-full:CurrentTaxExpenseIncome
790	Adjustment of prior years	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
791	Deferred taxation (Note 23)	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseIncome
792	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
793	41002 - Disclosure - INCOME TAX EXPENSE - RECONCILIATION BETWEEN ACTUAL INCOME TAX EXPENSE AND THE EXPECTED INCOME TAX EXPENSE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureIncomeTaxExpenseReconciliationBetweenActualIncomeTaxExpenseAndExpectedIncomeTaxExpenseDetails
794	Income tax disclosure [table]	Table	*	*	snp:IncomeTaxDisclosureTable
795	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
796	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
797	PRC	Member			ifrs-full:CountryOfDomicileMember
798	Income tax disclosure [line items]	LineItems			snp:IncomeTaxDisclosureLineItems
799	Reconciliation between actual income tax expense and the expected income tax expense at applicable statutory tax rates	Abstract			ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
800	Earnings before income tax	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
801	Expected PRC income tax expense at a statutory tax rate of 25%	Concept (Monetary)	For Period	Debit	snp:ExpectedIncomeTaxExpense
802	Tax effect of preferential tax rate (Note i)	Concept (Monetary)	For Period	Credit	snp:TaxEffectOfPreferentialTaxRate
803	Effect of income taxes at foreign operations	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfForeignTaxRates
804	Tax effect of non-deductible expenses	Concept (Monetary)	For Period	Debit	ifrs-full:TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss
805	Tax effect of non-taxable income	Concept (Monetary)	For Period	Credit	ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
806	Tax effect of utilization of previously unrecognized tax losses and temporary differences	Concept (Monetary)	For Period	Credit	snp:TaxEffectOfUtilizationOfPreviouslyUnrecognizedTaxLossesAndTemporaryDifferences
807	Tax effect of tax losses not recognized	Concept (Monetary)	For Period	Debit	snp:TaxEffectOfTaxLossesNotRecognized
808	Write-down of deferred tax assets	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
809	Adjustment of prior years	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
810	Income tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
811	Statutory income tax rate	Concept (Percent)	For Period		snp:StatutoryIncomeTaxRate
812	Preferential income tax rate applicable to western regions	Concept (Percent)	For Period		snp:PreferentialIncomeTaxRateApplicableToWesternRegions
813	41101 - Disclosure - OTHER COMPREHENSIVE INCOME (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureOtherComprehensiveIncomeDetails
814	Implied Table	Table	*	*	implied:Table
815	OTHER COMPREHENSIVE INCOME [abstract]	Abstract			ifrs-full:OtherComprehensiveIncomeAbstract
816	Cash flow hedges:	Abstract			ifrs-full:CashFlowHedgesAbstract
817	Effective portion of changes in fair value of hedging instruments recognized during the year, before tax	Concept (Monetary)	For Period	Credit	snp:EffectivePortionOfChangesInFairValueOfHedgingInstrumentsRecognizedBeforeTax
818	Effective portion of changes in fair value of hedging instruments recognized during the year, tax effect	Concept (Monetary)	For Period	Debit	snp:EffectivePortionOfChangesInFairValueOfHedgingInstrumentsRecognizedTaxEffect
819	Effective portion of changes in fair value of hedging instruments recognized during the year, net of tax	Concept (Monetary)	For Period	Credit	snp:EffectivePortionOfChangesInFairValueOfHedgingInstrumentsRecognizedNetOfTax
820	Amounts transferred to initial carrying amount of hedged items, before tax	Concept (Monetary)	For Period	Debit	snp:AmountsTransferredToInitialCarryingAmountOfHedgedItemsBeforeTax
821	Amounts transferred to initial carrying amount of hedged items, tax effect	Concept (Monetary)	For Period	Debit	snp:AdjustmentsForAmountsTransferredToInitialCarryingAmountOfHedgedItemsTax
822	Amounts transferred to initial carrying amount of hedged items, net of tax	Concept (Monetary)	For Period	Debit	ifrs-full:AdjustmentsForAmountsTransferredToInitialCarryingAmountOfHedgedItems
823	Reclassification adjustments for amounts transferred to the consolidated statement of income, cash flow hedge, before tax	Concept (Monetary)	For Period	Debit	ifrs-full:AmountsRemovedFromEquityAndAdjustedAgainstFairValueOfFinancialAssetsOnReclassificationOutOfFairValueThroughOtherComprehensiveIncomeMeasurementCategoryBeforeTax
824	Reclassification adjustments for amounts transferred to the consolidated statement of income, cash flow hedge, tax effect	Concept (Monetary)	For Period	Debit	snp:ReclassificationAdjustmentsForAmountsTransferredToConsolidatedStatementOfIncomeCashFlowHedgeTaxEffect
825	Reclassification adjustments for amounts transferred to the consolidated statement of income, cash flow hedge, net of tax	Concept (Monetary)	For Period	Debit	ifrs-full:AmountsRemovedFromEquityAndAdjustedAgainstFairValueOfFinancialAssetsOnReclassificationOutOfFairValueThroughOtherComprehensiveIncomeMeasurementCategoryNetOfTax
826	Cash flow hedges, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxCashFlowHedges
827	Cash flow hedges, tax effect	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
828	Cash flow hedges, net of tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
829	Cash flow hedge reserve	Concept (Monetary)	As Of	Credit	ifrs-full:ReserveOfCashFlowHedges
830	Cash flow hedge reserve attributable to owners	Concept (Monetary)	As Of	Credit	snp:ReserveOfCashFlowHedgesAttributableToShareholdersOfCompany
831	Available-for-sale financial assets:	Abstract			ifrs-full:AvailableforsaleFinancialAssetsAbstract
832	Changes in fair value recognized during the year, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsBeforeTax
833	Changes in fair value recognized during the year, tax	Concept (Monetary)	For Period	Debit	snp:GainsLossesOnRemeasuringAvailableForSaleFinancialAssetsIncomeTaxEffect
834	Changes in fair value recognized during the year, after tax	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnRemeasuringAvailableforsaleFinancialAssetsNetOfTax
835	Changes in the fair value of instruments at fair value through other comprehensive income, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeBeforeTax
836	Changes in the fair value of instruments at fair value through other comprehensive income, tax effect	Concept (Monetary)	For Period	Debit	snp:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeTaxEffect
837	Changes in the fair value of instruments at fair value through other comprehensive income, after tax	Concept (Monetary)	For Period	Credit	ifrs-full:GainsLossesOnFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeNetOfTax
838	Available-for-sale securities, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxAvailableforsaleFinancialAssets
839	Available-for-sale securities, tax effect	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToAvailableforsaleFinancialAssetsOfOtherComprehensiveIncome
840	Available-for-sale securities, net of tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxAvailableforsaleFinancialAssets
841	Fair value through other comprehensive income, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
842	Fair value through other comprehensive income, after tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
843	Share of other comprehensive income/(loss) of associates and joint ventures, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossBeforeTax
844	Share of other comprehensive income/(loss) of associates and joint ventures, tax effect	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxRelatingToShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLoss
845	Share of other comprehensive income/(loss) of associates and joint ventures, net of tax	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
846	Foreign currency translation differences, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTaxExchangeDifferencesOnTranslation
847	Foreign currency translation differences, net of tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
848	Other comprehensive income, before tax	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncomeBeforeTax
849	Other comprehensive income, tax effect	Concept (Monetary)	For Period	Debit	snp:OtherComprehensiveIncomeTaxEffect
850	Total other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
851	41201 - Disclosure - BASIC AND DILUTED EARNINGS PER SHARE - NET INCOME ATTRIBUTABLE TO ORDINARY OWNERS OF THE COMPANY (DILUTED) (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureBasicAndDilutedEarningsPerShareNetIncomeAttributableToOrdinaryOwnersOfCompanyDilutedDetails
852	Implied Table	Table	*	*	implied:Table
853	BASIC AND DILUTED EARNINGS PER SHARE [abstract]	Abstract			ifrs-full:BasicAndDilutedEarningsPerShareAbstract
854	Net income attributable to ordinary owners of the Company	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
855	After tax effect of employee share option scheme of Shanghai Petrochemical	Concept (Monetary)	For Period	Credit	snp:AfterTaxEffectOfEmployeeShareOptionScheme
856	Net income attributable to ordinary owners of the company (diluted)	Concept (Monetary)	For Period	Credit	snp:ProfitLossAttributableToOwnersOfParentAfterDilution
857	41202 - Disclosure - BASIC AND DILUTED EARNINGS PER SHARE - WEIGHTED AVERAGE NUMBER OF SHARES (DILUTED) (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureBasicAndDilutedEarningsPerShareWeightedAverageNumberOfSharesDilutedDetails
858	Implied Table	Table	*	*	implied:Table
859	Weighted average number of shares (diluted) [abstract]	Abstract			ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
860	Weighted average number of shares as of December 31	Concept (Shares)	For Period		ifrs-full:WeightedAverageShares
861	Weighted average number of shares (diluted) as of December 31	Concept (Shares)	For Period		ifrs-full:AdjustedWeightedAverageShares
862	41301 - Disclosure - FINANCIAL ASSETS AT FAIR VALUE THROUGH PROFIT OR LOSS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialAssetsAtFairValueThroughProfitOrLossDetails
863	Disclosure of financial assets [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsTable
864	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
865	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
866	Structured deposit	Member			snp:StructuredDepositMember
867	Equity investments, listed and at quoted market price	Member			ifrs-full:TradingEquitySecuritiesMember
868	Disclosure of financial assets [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsLineItems
869	Financial assets at fair value through profit or loss	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentFinancialAssetsAtFairValueThroughProfitOrLoss
870	41501 - Disclosure - TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTradeAccountsReceivableAndBillsReceivableDetails
871	Disclosure of trade accounts receivable [table]	Table	*	*	snp:DisclosureOfTradeAccountsReceivableTable
872	Counterparties [axis]	Axis			ifrs-full:CounterpartiesAxis
873	Counterparties [member]	Member			ifrs-full:CounterpartiesMember
874	Third parties	Member			snp:ThirdPartiesMember
875	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
876	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
877	Sinopec Group Company and fellow subsidiaries	Member			snp:SinopecGroupCompanyAndFellowSubsidiariesMember
878	Associates and joint ventures	Member			snp:AssociatesAndJointPartiesMember
879	Disclosure of trade accounts receivable [line items]	LineItems			snp:DisclosureOfTradeAccountsReceivableLineItems
880	Trade accounts receivable, gross amount	Concept (Monetary)	As Of	Debit	snp:TradeAccountsReceivableGrossAmount
881	Less: impairment loss for bad and doubtful debts	Concept (Monetary)	As Of	Credit	snp:ProvisionsOfImpairmentLossesForBadAndDoubtfulDebts
882	Trade accounts receivable, net	Concept (Monetary)	As Of	Debit	ifrs-full:TradeReceivables
883	Bills receivable	Concept (Monetary)	As Of	Debit	snp:BillsReceivable
884	Trade accounts receivable and bills receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
885	41502 - Disclosure - TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE - AGEING ANALYSIS OF TRADE ACCOUNTS AND BILLS RECEIVABLES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTradeAccountsReceivableAndBillsReceivableAgeingAnalysisOfTradeAccountsAndBillsReceivablesDetails
886	Disclosure of financial assets that are either past due or impaired [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
887	Maturity [axis]	Axis			ifrs-full:MaturityAxis
888	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
889	Within one year	Member			ifrs-full:NotLaterThanOneYearMember
890	Between one and two years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
891	Between two and three years	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
892	Over three years	Member			ifrs-full:LaterThanThreeYearsMember
893	Disclosure of financial assets that are either past due or impaired [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
894	Trade accounts receivable and bills receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
895	41503 - Disclosure - TRADE ACCOUNTS RECEIVABLE AND BILLS RECEIVABLE - IMPAIRMENT LOSSES FOR BAD AND DOUBTFUL DEBTS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTradeAccountsReceivableAndBillsReceivableImpairmentLossesForBadAndDoubtfulDebtsDetails
896	Disclosure of financial assets that are either past due or impaired [table]	Table	*	*	ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
897	Impairment of financial assets [axis]	Axis			ifrs-full:ImpairmentOfFinancialAssetsAxis
898	Entity's total for impairment of financial assets [member]	Member			ifrs-full:EntitysTotalForImpairmentOfFinancialAssetsMember
899	Financial assets neither past due nor impaired	Member			ifrs-full:FinancialAssetsNeitherPastDueNorImpairedMember
900	Disclosure of financial assets that are either past due or impaired [line items]	LineItems			ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
901	Balance at beginning of year	Concept (Monetary)	As Of	Credit	snp:ProvisionsOfImpairmentLossesForBadAndDoubtfulDebts
902	Provision for the year	Concept (Monetary)	For Period	Debit	ifrs-full:ImpairmentLossRecognisedInProfitOrLossTradeReceivables
903	Written back for the year	Concept (Monetary)	For Period	Credit	snp:ImpairmentLossesOfTradeAccountsReceivablesWrittenBack
904	Written off for the year	Concept (Monetary)	For Period	Credit	snp:ImpairmentLossesOfTradeAccountsReceivablesWrittenOff
905	Others	Concept (Monetary)	For Period	Debit	snp:OtherImpairmentLossesOfTradeAccountsReceivables
906	Balance at end of year	Concept (Monetary)	As Of	Credit	snp:ProvisionsOfImpairmentLossesForBadAndDoubtfulDebts
907	41601 - Disclosure - INVENTORIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInventoriesDetails
908	Implied Table	Table	*	*	implied:Table
909	INVENTORIES [abstract]	Abstract			ifrs-full:ClassesOfInventoriesAbstract
910	Crude oil and other raw materials	Concept (Monetary)	As Of	Debit	snp:CrudeOilAndOtherRawMaterials
911	Work in progress	Concept (Monetary)	As Of	Debit	ifrs-full:WorkInProgress
912	Finished goods	Concept (Monetary)	As Of	Debit	ifrs-full:FinishedGoods
913	Spare parts and consumables	Concept (Monetary)	As Of	Debit	snp:SparePartsAndConsumables
914	Inventories, book value	Concept (Monetary)	As Of	Debit	ifrs-full:InventoriesTotal
915	Less: Allowance for diminution in value of inventories	Concept (Monetary)	As Of	Credit	snp:AllowanceForDiminutionInValueOfInventories
916	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:Inventories
917	41602 - Disclosure - INVENTORIES - ALLOWANCE FOR DIMINUTION IN VALUE OF INVENTORIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInventoriesAllowanceForDiminutionInValueOfInventoriesDetails
918	Implied Table	Table	*	*	implied:Table
919	INVENTORIES [abstract]	Abstract			ifrs-full:ClassesOfInventoriesAbstract
920	Balance at beginning of year	Concept (Monetary)	As Of	Credit	snp:AllowanceForDiminutionInValueOfInventories
921	Allowance for the year	Concept (Monetary)	For Period		ifrs-full:InventoryWritedown2011
922	Reversal of allowance on disposal	Concept (Monetary)	For Period		ifrs-full:ReversalOfInventoryWritedown
923	Written off	Concept (Monetary)	For Period	Debit	snp:InventoriesWrittenOff
924	Other increase	Concept (Monetary)	For Period	Debit	snp:OtherDecreaseIncreaseOfAllowanceForDiminutionInValueOfInventories
925	Balance at end of year	Concept (Monetary)	As Of	Credit	snp:AllowanceForDiminutionInValueOfInventories
926	Costs of inventories recognized as an expense	Concept (Monetary)	For Period	Debit	snp:CostsOfInventoriesRecognizedAsExpense
927	41701 - Disclosure - PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrepaidExpensesAndOtherCurrentAssetsDetails
928	Implied Table	Table	*	*	implied:Table
929	PREPAID EXPENSES AND OTHER CURRENT ASSETS [abstract]	Abstract			snp:PrepaidExpensesAndOtherCurrentAssetsAbstract
930	Other receivables	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentReceivables
931	Advances to suppliers	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAdvancesToSuppliers
932	Value-added input tax to be deducted	Concept (Monetary)	As Of	Debit	snp:ValueaddedInputTaxToBeDeducted
933	Prepaid income tax	Concept (Monetary)	As Of	Debit	snp:PrepaidIncomeTax
934	Prepaid expenses and other current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
935	41801 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePropertyPlantAndEquipmentDetails
936	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
937	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
938	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
939	Buildings	Member			ifrs-full:BuildingsMember
940	Oil and gas properties	Member			ifrs-full:OilAndGasAssetsMember
941	Equipment, machinery and others [member]	Member			ifrs-full:OtherPropertyPlantAndEquipmentMember
942	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
943	Net book value [member]	Member			ifrs-full:CarryingAmountMember
944	Cost [member]	Member			ifrs-full:GrossCarryingAmountMember
945	Accumulated amortization [member]	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
946	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
947	Balance at beginning of year	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
948	Additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
949	Transferred from construction in progress	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
950	Reclassifications	Concept (Monetary)	For Period	Debit	snp:PropertyPlantAndEquipmentReclassifications
951	Reclassification to lease prepayments and other long-term assets	Concept (Monetary)	For Period	Credit	snp:PropertyPlantAndEquipmentReclassificationToLeasePrepaymentsAndOtherLongtermAssets
952	Disposals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsPropertyPlantAndEquipment
953	Exchange adjustments	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
954	Depreciation for the year	Concept (Monetary)	For Period		ifrs-full:DepreciationPropertyPlantAndEquipment
955	Impairment losses for the year	Concept (Monetary)	For Period		ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
956	Balance at end of year	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
957	41901 - Disclosure - CONSTRUCTION IN PROGRESS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureConstructionInProgressDetails
958	Disclosure of detailed information about property, plant and equipment [table]	Table	*	*	ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
959	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
960	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
961	Construction in progress	Member			ifrs-full:ConstructionInProgressMember
962	Disclosure of detailed information about property, plant and equipment [line items]	LineItems			ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
963	Balance at beginning of year	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
964	Additions	Concept (Monetary)	For Period	Debit	ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
965	Dry hole costs written off	Concept (Monetary)	For Period	Credit	snp:ConstructionInProgressDryHoleCostWrittenOff
966	Transferred to property, plant and equipment	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughTransfersFromConstructionInProgressPropertyPlantAndEquipment
967	Reclassification to lease prepayments and other long-term assets	Concept (Monetary)	For Period	Credit	snp:PropertyPlantAndEquipmentReclassificationToLeasePrepaymentsAndOtherLongtermAssets
968	Impairment losses for the year	Concept (Monetary)	For Period		ifrs-full:ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment
969	Disposals	Concept (Monetary)	For Period	Credit	ifrs-full:DisposalsPropertyPlantAndEquipment
970	Exchange adjustments	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
971	Balance at end of year	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipment
972	41902 - Disclosure - CONSTRUCTION IN PROGRESS - NET CHANGES IN CAPITALIZED COST OF EXPLORATORY WELLS IN THE E AND P SEGMENT (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureConstructionInProgressNetChangesInCapitalizedCostOfExploratoryWellsInEAndPSegmentDetails
973	Disclosure of net changes in capitalized cost of exploratory wells in exploration and production segment [table]	Table	*	*	snp:DisclosureOfNetChangesInCapitalizedCostOfExploratoryWellsInExplorationAndProductionSegmentTable
974	Segments [axis]	Axis			ifrs-full:SegmentsAxis
975	Segments [member]	Member			ifrs-full:SegmentsMember
976	Exploration and production	Member			snp:ExplorationAndProductionMember
977	Disclosure of net changes in capitalized cost of exploratory wells in exploration and production segment [line items]	LineItems			snp:DisclosureOfNetChangesInCapitalizedCostOfExploratoryWellsInExplorationAndProductionSegmentLineItems
978	Balance at beginning of year	Concept (Monetary)	As Of	Debit	snp:CapitalizedExploratoryWellCostsConstructionInProgress
979	Additions, net of amount that were capitalized and subsequently expensed in the same year, pending the determination of proved reserves	Concept (Monetary)	For Period	Debit	snp:NetChangesInCapitalizedCostAdditionsConstructionInProgress
980	Transferred to oil and gas properties based on the determination of proved reserves	Concept (Monetary)	For Period	Credit	snp:NetChangesInCapitalizedCostTransferToOilAndGasPropertiesBasedOnDeterminationOfProvedReservesConstructionInProgress
981	Dry hole costs written off	Concept (Monetary)	For Period	Credit	snp:ConstructionInProgressDryHoleCostWrittenOff
982	Balance at end of year	Concept (Monetary)	As Of	Debit	snp:CapitalizedExploratoryWellCostsConstructionInProgress
983	41903 - Disclosure - CONSTRUCTION IN PROGRESS - AGING OF CAPITALIZED EXPLORATORY WELL COSTS BASED ON THE DRILLING COMPLETION DATE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureConstructionInProgressAgingOfCapitalizedExploratoryWellCostsBasedOnDrillingCompletionDateDetails
984	Disclosure of aging of capitalized exploratory well costs based on drilling completion date [table]	Table	*	*	snp:DisclosureOfAgingOfCapitalizedExploratoryWellCostsBasedOnDrillingCompletionDateTable
985	Maturity [axis]	Axis			ifrs-full:MaturityAxis
986	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
987	Within one year	Member			ifrs-full:NotLaterThanOneYearMember
988	Over one year [member]	Member			ifrs-full:LaterThanOneYearMember
989	Disclosure of aging of capitalized exploratory well costs based on drilling completion date [line items]	LineItems			snp:DisclosureOfAgingOfCapitalizedExploratoryWellCostsBasedOnDrillingCompletionDateLineItems
990	Capitalized exploratory well costs	Concept (Monetary)	As Of	Debit	snp:CapitalizedExploratoryWellCostsConstructionInProgress
991	Geological and geophysical costs	Concept (Monetary)	For Period	Debit	snp:GeologicalAndGeophysicalCostsConstructionInProgress
992	42001 - Disclosure - GOODWILL - IMPAIRMENT TESTS FOR CASH-GENERATING UNITS CONTAINING GOODWILL (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureGoodwillImpairmentTestsForCashGeneratingUnitsContainingGoodwillDetails
993	Disclosure of reconciliation of changes in goodwill [table]	Table	*	*	ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
994	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
995	Net book value [member]	Member			ifrs-full:CarryingAmountMember
996	Cost [member]	Member			ifrs-full:GrossCarryingAmountMember
997	Accumulated impairment [member]	Member			ifrs-full:AccumulatedImpairmentMember
998	Disclosure of reconciliation of changes in goodwill [line items]	LineItems			ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
999	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1000	42002 - Disclosure - GOODWILL - GOODWILL ALLOCATED TO CASH-GENERATING UNITS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureGoodwillGoodwillAllocatedToCashGeneratingUnitsDetails
1001	Disclosure of information for cash-generating units [table]	Table	*	*	ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable
1002	Cash-generating units [axis]	Axis			ifrs-full:IndividualAssetsOrCashgeneratingUnitsWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesAxis
1003	Entity's total for cash-generating units [member]	Member			ifrs-full:EntitysTotalForCashgeneratingUnitsMember
1004	Sinopec Yanshan	Member			snp:SinopecBeijingYanshanPetrochemicalBranchMember
1005	Sinopec Zhenhai	Member			snp:SinopecZhenhaiRefiningAndChemicalBranchMember
1006	Shanghai SECCO	Member			snp:ShanghaiSeccoPetrochemicalCompanyLimitedMember
1007	Sinopec Hong Kong Limited	Member			snp:SinopecHongKongLimitedMember
1008	Other units without individually significant goodwill	Member			snp:OtherUnitsWithoutIndividuallySignificantGoodwillMember
1009	Disclosure of information for cash-generating units [line items]	LineItems			ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
1010	Goodwill	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1011	42003 - Disclosure - GOODWILL - RECOVERABLE AMOUNTS OF CASH-GENERATING UNITS - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureGoodwillRecoverableAmountsOfCashGeneratingUnitsNarrativeDetails
1012	Disclosure of information for cash-generating units [table]	Table	*	*	ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesTable
1013	Range [axis]	Axis			ifrs-full:RangeAxis
1014	Ranges [member]	Member			ifrs-full:RangesMember
1015	Maximum	Member			ifrs-full:TopOfRangeMember
1016	Minimum	Member			ifrs-full:BottomOfRangeMember
1017	Disclosure of information for cash-generating units [line items]	LineItems			ifrs-full:DisclosureOfInformationForIndividualAssetOrCashgeneratingUnitWithSignificantAmountOfGoodwillOrIntangibleAssetsWithIndefiniteUsefulLivesLineItems
1018	Explanation of period over which management has projected cash flows	Concept (Text/String)	For Period		ifrs-full:ExplanationOfPeriodOverWhichManagementHasProjectedCashFlows
1019	Pre-tax discount rates applied to cash flow projections	Concept (Percent)	As Of		ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
1020	42101 - Disclosure - INTEREST IN ASSOCIATES - PRINCIPAL ASSOCIATES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInAssociatesPrincipalAssociatesDetails
1021	Disclosure of associates [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1022	Associates [axis]	Axis			ifrs-full:SignificantInvestmentsInAssociatesAxis
1023	Entity's total for associates [member]	Member			ifrs-full:EntitysTotalForAssociatesMember
1024	Sinopec Sichuan to East China Gas Pipeline Co., Ltd. ("Pipeline Ltd") [member]	Member			snp:SinopecSichuanToEastChinaGasPipelineCoLtdPipelineLtdMember
1025	Sinopec Finance Company Limited ("Sinopec Finance") [member]	Member			snp:SinopecFinanceCompanyLimitedSinopecFinanceMember
1026	SIBUR	Member			snp:PaoSiburHoldingMember
1027	Zhongtian Synergetic Energy Company Limited ("Zhongtian Synergetic Energy") [member]	Member			snp:ZhongtianSynergeticEnergyCompanyLimitedZhongtianSynergeticEnergyMember
1028	Caspian Investments Resources Ltd. ("CIR") [member]	Member			snp:CaspianInvestmentsResourcesLtdCirMember
1029	Disclosure of associates [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1030	Particulars of issued and paid up capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
1031	Percentage of equity held by the Company	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInAssociate
1032	Percentage of equity held by Company's subsidiaries	Concept (Percent)	As Of		snp:PercentageOfEquityHeldByCompanysSubsidiaries
1033	42102 - Disclosure - INTEREST IN ASSOCIATES - SUMMARIZED FINANCIAL INFORMATION (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInAssociatesSummarizedFinancialInformationDetails
1034	Disclosure of associates [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1035	Associates [axis]	Axis			ifrs-full:SignificantInvestmentsInAssociatesAxis
1036	Entity's total for associates [member]	Member			ifrs-full:EntitysTotalForAssociatesMember
1037	Sinopec Sichuan to East China Gas Pipeline Co., Ltd. ("Pipeline Ltd") [member]	Member			snp:SinopecSichuanToEastChinaGasPipelineCoLtdPipelineLtdMember
1038	Sinopec Finance Company Limited ("Sinopec Finance") [member]	Member			snp:SinopecFinanceCompanyLimitedSinopecFinanceMember
1039	SIBUR	Member			snp:PaoSiburHoldingMember
1040	Zhongtian Synergetic Energy Company Limited ("Zhongtian Synergetic Energy") [member]	Member			snp:ZhongtianSynergeticEnergyCompanyLimitedZhongtianSynergeticEnergyMember
1041	Caspian Investments Resources Ltd. ("CIR") [member]	Member			snp:CaspianInvestmentsResourcesLtdCirMember
1042	INTEREST IN ASSOCIATES	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1043	Current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
1044	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
1045	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
1046	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
1047	Net assets	Concept (Monetary)	As Of	Debit	ifrs-full:NetAssetsLiabilities
1048	Net assets attributable to owners of the Company	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
1049	Net assets attributable to non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
1050	Share of net assets from associates	Concept (Monetary)	As Of	Debit	snp:ShareOfNetAssetsForUsingEquityMethod
1051	Carrying Amounts	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentAccountedForUsingEquityMethod
1052	42103 - Disclosure - INTEREST IN ASSOCIATES - SUMMARIZED STATEMENT OF COMPREHENSIVE INCOME (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInAssociatesSummarizedStatementOfComprehensiveIncomeDetails
1053	Disclosure of associates [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesTable
1054	Associates [axis]	Axis			ifrs-full:SignificantInvestmentsInAssociatesAxis
1055	Entity's total for associates [member]	Member			ifrs-full:EntitysTotalForAssociatesMember
1056	Sinopec Sichuan to East China Gas Pipeline Co., Ltd. ("Pipeline Ltd") [member]	Member			snp:SinopecSichuanToEastChinaGasPipelineCoLtdPipelineLtdMember
1057	Sinopec Finance Company Limited ("Sinopec Finance") [member]	Member			snp:SinopecFinanceCompanyLimitedSinopecFinanceMember
1058	SIBUR	Member			snp:PaoSiburHoldingMember
1059	Zhongtian Synergetic Energy Company Limited ("Zhongtian Synergetic Energy") [member]	Member			snp:ZhongtianSynergeticEnergyCompanyLimitedZhongtianSynergeticEnergyMember
1060	Caspian Investments Resources Ltd. ("CIR") [member]	Member			snp:CaspianInvestmentsResourcesLtdCirMember
1061	Aggregated individually immaterial associates	Member			ifrs-full:AggregatedIndividuallyImmaterialAssociatesMember
1062	Disclosure of associates [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInAssociatesLineItems
1063	Operating revenues	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1064	Net income/(loss) for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1065	Other comprehensive (loss)/income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
1066	Total comprehensive income for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
1067	Dividends declared by associates	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsReceived
1068	Share of net income/(loss) from associates	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod
1069	Share of other comprehensive (loss)/income from associates	Concept (Monetary)	For Period	Credit	snp:ShareOfOtherComprehensiveIncomeFromAssociates
1070	Carrying Amounts	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentAccountedForUsingEquityMethod
1071	42201 - Disclosure - INTEREST IN JOINT VENTURES - PRINCIPAL JOINT VENTURES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInJointVenturesPrincipalJointVenturesDetails
1072	Disclosure of joint ventures [table]	Table	*	*	ifrs-full:DisclosureOfJointVenturesTable
1073	Joint ventures [axis]	Axis			ifrs-full:JointVenturesAxis
1074	Entity's total for joint ventures [member]	Member			ifrs-full:EntitysTotalForJointVenturesMember
1075	Fujian Refining & Petrochemical Company Limited ("FREP") [member]	Member			snp:FujianRefiningAndPetrochemicalCompanyLimitedFrepMember
1076	BASF-YPC Company Limited ("BASF-YPC") [member]	Member			snp:BasfypcCompanyLimitedBasfypcMember
1077	Taihu Limited ("Taihu") [member]	Member			snp:TaihuLimitedTaihuMember
1078	Yanbu Aramco Sinopec Refining Company Ltd. ("YASREF") [member]	Member			snp:YanbuAramcoSinopecRefiningCompanyLtdYasrefMember
1079	Sinopec SABIC Tianjin	Member			snp:SinopecSabicTianjinPetrochemicalCompanyLimitedMember
1080	Disclosure of joint ventures [line items]	LineItems			ifrs-full:DisclosureOfJointVenturesLineItems
1081	Particulars of issued and paid up capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
1082	Percentage of equity held by the Company	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInJointVenture
1083	Percentage of equity held by Company's subsidiaries	Concept (Percent)	As Of		snp:PercentageOfEquityHeldByCompanysSubsidiaries
1084	42202 - Disclosure - INTEREST IN JOINT VENTURES - SUMMARIZED FINANCIAL INFORMATION (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInJointVenturesSummarizedFinancialInformationDetails
1085	Disclosure of joint ventures [table]	Table	*	*	ifrs-full:DisclosureOfJointVenturesTable
1086	Joint ventures [axis]	Axis			ifrs-full:JointVenturesAxis
1087	Entity's total for joint ventures [member]	Member			ifrs-full:EntitysTotalForJointVenturesMember
1088	Fujian Refining & Petrochemical Company Limited ("FREP") [member]	Member			snp:FujianRefiningAndPetrochemicalCompanyLimitedFrepMember
1089	BASF-YPC Company Limited ("BASF-YPC") [member]	Member			snp:BasfypcCompanyLimitedBasfypcMember
1090	Taihu Limited ("Taihu") [member]	Member			snp:TaihuLimitedTaihuMember
1091	Yanbu Aramco Sinopec Refining Company Ltd. ("YASREF") [member]	Member			snp:YanbuAramcoSinopecRefiningCompanyLtdYasrefMember
1092	Sinopec SABIC Tianjin	Member			snp:SinopecSabicTianjinPetrochemicalCompanyLimitedMember
1093	Disclosure of joint ventures [line items]	LineItems			ifrs-full:DisclosureOfJointVenturesLineItems
1094	Current assets	Abstract			ifrs-full:CurrentAssetsAbstract
1095	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1096	Other current assets	Concept (Monetary)	As Of	Debit	ifrs-full:OtherCurrentAssets
1097	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
1098	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
1099	Current liabilities	Abstract			ifrs-full:CurrentLiabilitiesAbstract
1100	Current financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentFinancialLiabilities
1101	Other current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherCurrentLiabilities
1102	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
1103	Non-current liabilities	Abstract			ifrs-full:NoncurrentLiabilitiesAbstract
1104	Non-current financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentFinancialLiabilities
1105	Other non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
1106	Total non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
1107	Net assets	Concept (Monetary)	As Of	Debit	ifrs-full:NetAssetsLiabilities
1108	Net assets attributable to owners of the Company	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
1109	Net assets attributable to non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
1110	Share of net assets from associates	Concept (Monetary)	As Of	Debit	snp:ShareOfNetAssetsForUsingEquityMethod
1111	Carrying Amounts	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentAccountedForUsingEquityMethod
1112	42203 - Disclosure - INTEREST IN JOINT VENTURES - SUMMARIZED STATEMENT OF COMPREHENSIVE INCOME (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureInterestInJointVenturesSummarizedStatementOfComprehensiveIncomeDetails
1113	Disclosure of joint ventures [table]	Table	*	*	ifrs-full:DisclosureOfJointVenturesTable
1114	Joint ventures [axis]	Axis			ifrs-full:JointVenturesAxis
1115	Entity's total for joint ventures [member]	Member			ifrs-full:EntitysTotalForJointVenturesMember
1116	Fujian Refining & Petrochemical Company Limited ("FREP") [member]	Member			snp:FujianRefiningAndPetrochemicalCompanyLimitedFrepMember
1117	BASF-YPC Company Limited ("BASF-YPC") [member]	Member			snp:BasfypcCompanyLimitedBasfypcMember
1118	Taihu Limited ("Taihu") [member]	Member			snp:TaihuLimitedTaihuMember
1119	Yanbu Aramco Sinopec Refining Company Ltd. ("YASREF") [member]	Member			snp:YanbuAramcoSinopecRefiningCompanyLtdYasrefMember
1120	Sinopec SABIC Tianjin	Member			snp:SinopecSabicTianjinPetrochemicalCompanyLimitedMember
1121	Aggregated individually immaterial joint ventures	Member			ifrs-full:AggregatedIndividuallyImmaterialJointVenturesMember
1122	Disclosure of joint ventures [line items]	LineItems			ifrs-full:DisclosureOfJointVenturesLineItems
1123	Operating revenues	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1124	Depreciation, depletion and amortization	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationAndAmortisationExpense
1125	Interest income	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromInterest
1126	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
1127	Earning/(loss) before income tax	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
1128	Tax expense	Concept (Monetary)	For Period	Debit	ifrs-full:IncomeTaxExpenseContinuingOperations
1129	Net income/(loss) for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1130	Other comprehensive (loss)/income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
1131	Total comprehensive income for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
1132	Dividends declared by joint ventures	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsReceived
1133	Share of net income/(loss) from joint ventures	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
1134	Share of other comprehensive (loss)/income from joint ventures	Concept (Monetary)	For Period	Credit	snp:ShareOfOtherComprehensiveIncomeFromJointVentures
1135	Carrying Amounts	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentAccountedForUsingEquityMethod
1136	42301 - Disclosure - DEFERRED TAX ASSETS AND LIABILITIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesDetails
1137	Deferred tax and liabilities [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1138	Temporary difference, unused tax losses and unused tax credits [axis]	Axis			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1139	Temporary difference, unused tax losses and unused tax credits [member]	Member			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1140	Receivables and inventories	Member			snp:ReceivablesAndInventoriesMember
1141	Payables	Member			snp:PayablesMember
1142	Cash flow hedges	Member			ifrs-full:CashFlowHedgesMember
1143	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
1144	Tax losses carried forward	Member			ifrs-full:UnusedTaxLossesMember
1145	Available-for-sale financial assets	Member			snp:DeferredTaxesAvailableForSaleFinancialAssetsMember
1146	Financial assets at fair value through other comprehensive income	Member			ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1147	Intangible assets	Member			snp:DeferredTaxesIntangibleAssetsMember
1148	Others	Member			ifrs-full:OtherTemporaryDifferencesMember
1149	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1150	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssets
1151	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilities
1152	42302 - Disclosure - DEFERRED TAX ASSETS AND LIABILITIES - UNRECOGNIZED DEFERRED TAX OF CERTAIN SUBSIDIARIES - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesUnrecognizedDeferredTaxOfCertainSubsidiariesNarrativeDetails
1153	Deferred tax and liabilities [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1154	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1155	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1156	Within one year	Member			ifrs-full:NotLaterThanOneYearMember
1157	Between one and two years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1158	Between two and three years	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1159	Between three and four years	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1160	Later than four years	Member			snp:LaterThanFourYearsMember
1161	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1162	Deductible tax losses carried forward	Concept (Monetary)	As Of		ifrs-full:UnusedTaxLossesForWhichNoDeferredTaxAssetRecognised
1163	Write-down of deferred tax assets	Concept (Monetary)	For Period	Debit	ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
1164	42303 - Disclosure - DEFERRED TAX ASSETS AND LIABILITIES - MOVEMENTS IN DEFERRED TAX ASSETS AND LIABILITIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureDeferredTaxAssetsAndLiabilitiesMovementsInDeferredTaxAssetsAndLiabilitiesDetails
1165	Disclosure of temporary difference, unused tax losses and unused tax credits [table]	Table	*	*	ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1166	Temporary difference, unused tax losses and unused tax credits [axis]	Axis			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1167	Temporary difference, unused tax losses and unused tax credits [member]	Member			ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1168	Receivables and inventories	Member			snp:ReceivablesAndInventoriesMember
1169	Payables	Member			snp:PayablesMember
1170	Cash flow hedges	Member			ifrs-full:CashFlowHedgesMember
1171	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
1172	Tax losses carried forward	Member			ifrs-full:UnusedTaxLossesMember
1173	Available-for-sale financial assets	Member			snp:DeferredTaxesAvailableForSaleFinancialAssetsMember
1174	Financial assets at fair value through other comprehensive income	Member			ifrs-full:FinancialAssetsAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1175	Intangible assets	Member			snp:DeferredTaxesIntangibleAssetsMember
1176	Others	Member			ifrs-full:OtherTemporaryDifferencesMember
1177	Disclosure of temporary difference, unused tax losses and unused tax credits [line items]	LineItems			ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1178	Balance at beginning of year	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilityAsset
1179	Recognized in consolidated statement of income	Concept (Monetary)	For Period		ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1180	Recognized in other comprehensive income	Concept (Monetary)	For Period		ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1181	Others	Concept (Monetary)	For Period	Credit	snp:DeferredTaxRelatingToOtherItems
1182	Acquisition of Shanghai SECCO	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughBusinessCombinationsDeferredTaxLiabilityAsset
1183	Transferred from reserve	Concept (Monetary)	For Period	Credit	snp:DeferredTaxExpenseIncomeTransferredFromReserve
1184	Balance at end of year	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilityAsset
1185	42401 - Disclosure - LEASE PREPAYMENTS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureLeasePrepaymentsDetails
1186	Disclosure of detailed information about lease prepayments [table]	Table	*	*	snp:DisclosureOfDetailedInformationAboutLeasePrepaymentsTable
1187	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1188	Net book value [member]	Member			ifrs-full:CarryingAmountMember
1189	Cost [member]	Member			ifrs-full:GrossCarryingAmountMember
1190	Accumulated amortization [member]	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
1191	Disclosure of detailed information about lease prepayments [line items]	LineItems			snp:DisclosureOfDetailedInformationAboutLeasePrepaymentsLineItems
1192	Balance as of beginning of year	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentLeasePrepayments
1193	Additions	Concept (Monetary)	For Period	Debit	snp:AdditionsLeasePrepayments
1194	Transferred from construction in progress	Concept (Monetary)	For Period	Debit	snp:IncreaseDecreaseThroughTransfersFromConstructionInProgressLeasePrepayments
1195	Amortization charge for the year	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationAndAmortisationExpense
1196	Transferred from other long-term assets	Concept (Monetary)	For Period	Debit	snp:IncreaseDecreaseThroughTransfersFromOtherLongtermAssetsLeasePrepayments
1197	Reclassification to other assets	Concept (Monetary)	For Period	Credit	snp:ReclassificationToOtherAssetsLeasePrepayments
1198	Disposals	Concept (Monetary)	For Period	Credit	snp:DisposalsLeasePrepayments
1199	Exchange adjustments	Concept (Monetary)	For Period	Debit	snp:IncreaseDecreaseThroughNetExchangeDifferencesLeasePrepayments
1200	Balance as of end of year	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentLeasePrepayments
1201	42501 - Disclosure - LONG-TERM PREPAYMENTS AND OTHER ASSETS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureLongTermPrepaymentsAndOtherAssetsDetails
1202	Disclosure of detailed information about long-term prepayments and other assets [table]	Table	*	*	snp:DisclosureOfDetailedInformationAboutLongtermPrepaymentsAndOtherAssetsTable
1203	Counterparties [axis]	Axis			ifrs-full:CounterpartiesAxis
1204	Counterparties [member]	Member			ifrs-full:CounterpartiesMember
1205	Third parties	Member			snp:ThirdPartiesMember
1206	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1207	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1208	Sinopec Group Company and fellow subsidiaries	Member			snp:SinopecGroupCompanyAndFellowSubsidiariesMember
1209	Disclosure of detailed information about long-term prepayments and other assets [line items]	LineItems			snp:DisclosureOfDetailedInformationAboutLongtermPrepaymentsAndOtherAssetsLineItems
1210	Operating rights of service stations	Concept (Monetary)	As Of	Debit	ifrs-full:CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRights
1211	Long-term receivables from and prepayment to Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentReceivablesDueFromRelatedParties
1212	Prepayments for construction projects to third parties	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentPrepayments
1213	Others (i)	Concept (Monetary)	As Of	Debit	snp:OtherPrepaidOperatingLeaseChargesOverOneYearAndCatalystExpenditures
1214	Balance as of end of year	Concept (Monetary)	As Of	Debit	snp:LongtermPrepaymentsAndOtherAssets
1215	42502 - Disclosure - LONG-TERM PREPAYMENTS AND OTHER ASSETS - MOVEMENT OF OPERATING RIGHTS OF SERVICE STATIONS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureLongTermPrepaymentsAndOtherAssetsMovementOfOperatingRightsOfServiceStationsDetails
1216	Disclosure of detailed information about operating rights of service stations [table]	Table	*	*	snp:DisclosureOfDetailedInformationAboutOperatingRightsOfServiceStationsTable
1217	Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]	Axis			ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1218	Net book value [member]	Member			ifrs-full:CarryingAmountMember
1219	Cost [member]	Member			ifrs-full:GrossCarryingAmountMember
1220	Accumulated amortization [member]	Member			ifrs-full:AccumulatedDepreciationAndAmortisationMember
1221	Disclosure of detailed information about operating rights of service stations [line items]	LineItems			snp:DisclosureOfDetailedInformationAboutOperatingRightsOfServiceStationsLineItems
1222	Balance as of beginning of year	Concept (Monetary)	As Of	Debit	ifrs-full:CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRights
1223	Additions	Concept (Monetary)	For Period	Debit	snp:AcquisitionsThroughBusinessCombinationsAndDirectAcquisitionOfOperatingRights
1224	Decreases	Concept (Monetary)	For Period	Credit	snp:DecreaseThroughLossOfControlOfSubsidiaryAndExpirationOfOperatingRights
1225	Balance as of end of year	Concept (Monetary)	As Of	Debit	ifrs-full:CopyrightsPatentsAndOtherIndustrialPropertyRightsServiceAndOperatingRights
1226	42601 - Disclosure - SHORT-TERM AND LOANS FROM SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureShortTermAndLoansFromSinopecGroupCompanyAndFellowSubsidiariesDetails
1227	Disclosure of detailed information about short-term debts and loans [table]	Table	*	*	snp:DisclosureOfDetailedInformationAboutShorttermDebtsAndLoansTable
1228	Currency [Axis]	Axis			srt:CurrencyAxis
1229	All currencies [member]	Member			currency:AllCurrenciesDomain
1230	RMB denominated	Member			currency:CNY
1231	US Dollar denominated	Member			currency:USD
1232	EUR	Member			currency:EUR
1233	HKD	Member			currency:HKD
1234	SGD	Member			currency:SGD
1235	Counterparties [axis]	Axis			ifrs-full:CounterpartiesAxis
1236	Counterparties [member]	Member			ifrs-full:CounterpartiesMember
1237	Third parties	Member			snp:ThirdPartiesMember
1238	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1239	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1240	Sinopec Group Company and fellow subsidiaries	Member			snp:SinopecGroupCompanyAndFellowSubsidiariesMember
1241	Disclosure of detailed information about short-term debts and loans [line items]	LineItems			snp:DisclosureOfDetailedInformationAboutShorttermDebtsAndLoansLineItems
1242	Short-term bank loans	Concept (Monetary)	As Of	Credit	snp:ShorttermBankLoans
1243	Short-term other loans	Concept (Monetary)	As Of	Credit	snp:ShortTermOtherLoans
1244	Current portion of long-term bank loans	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentPortionOfLongtermBorrowings
1245	Current portion of long-term corporate bonds	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued
1246	Current portion of long-term debts	Concept (Monetary)	As Of	Credit	snp:CurrentPortionOfLongtermDebts
1247	Short-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1248	Loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:CurrentLoansFromGroupAndFellowSubsidiaries
1249	Total short-term debts	Concept (Monetary)	As Of	Credit	snp:ShortTermLoans
1250	Weighted interest rates on short-term loans	Concept (Percent)	As Of		snp:WeightedInterestRatesOnShorttermLoans
1251	42602 - Disclosure - LONG-TERM AND LOANS FROM SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureLongTermAndLoansFromSinopecGroupCompanyAndFellowSubsidiariesDetails
1252	Disclosure of detailed information about long-term debts and loans [table]	Table	*	*	snp:DisclosureOfDetailedInformationAboutLongtermDebtsAndLoansTable
1253	Currency [Axis]	Axis			srt:CurrencyAxis
1254	All currencies [member]	Member			currency:AllCurrenciesDomain
1255	RMB denominated	Member			currency:CNY
1256	US Dollar denominated	Member			currency:USD
1257	Counterparties [axis]	Axis			ifrs-full:CounterpartiesAxis
1258	Counterparties [member]	Member			ifrs-full:CounterpartiesMember
1259	Third parties	Member			snp:ThirdPartiesMember
1260	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1261	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1262	Sinopec Group Company and fellow subsidiaries	Member			snp:SinopecGroupCompanyAndFellowSubsidiariesMember
1263	Range [axis]	Axis			ifrs-full:RangeAxis
1264	Ranges [member]	Member			ifrs-full:RangesMember
1265	Maximum	Member			ifrs-full:TopOfRangeMember
1266	Minimum	Member			ifrs-full:BottomOfRangeMember
1267	Disclosure of detailed information about long-term debts and loans [line items]	LineItems			snp:DisclosureOfDetailedInformationAboutLongtermDebtsAndLoansLineItems
1268	Long-term bank loans	Concept (Monetary)	As Of	Credit	snp:LongtermBankLoans
1269	Corporate bonds (i)	Concept (Monetary)	As Of	Credit	snp:LongtermCorporateDebtInstrumentsHeld
1270	Long-term debts	Concept (Monetary)	As Of	Credit	snp:LongtermDebtsGrossAmount
1271	Less: Current portion	Concept (Monetary)	As Of	Credit	snp:CurrentPortionOfLongtermDebts
1272	Long-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
1273	Loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:NoncurrentLoansFromGroupAndFellowSubsidiaries
1274	Total long-term debts	Concept (Monetary)	As Of	Credit	snp:LongtermDebts
1275	Weighted interest rates on long-term loans	Concept (Percent)	As Of		snp:WeightedInterestRatesOnLongtermLoans
1276	Fixed interest rates on long-term loans	Concept (Percent)	As Of		snp:FixedInterestRatesOnLongtermLoans
1277	Corporate bonds guaranteed by Sinopec Group Company	Concept (Monetary)	As Of	Credit	snp:CorporateBondsGuaranteedByGroup
1278	42701 - Disclosure - TRADE ACCOUNTS AND BILLS PAYABLE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureTradeAccountsAndBillsPayableDetails
1279	Disclosure of trade accounts and bills payable [table]	Table	*	*	snp:DisclosureOfTradeAccountsAndBillsPayableTable
1280	Counterparties [axis]	Axis			ifrs-full:CounterpartiesAxis
1281	Counterparties [member]	Member			ifrs-full:CounterpartiesMember
1282	Third parties	Member			snp:ThirdPartiesMember
1283	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1284	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1285	Sinopec Group Company and fellow subsidiaries	Member			snp:SinopecGroupCompanyAndFellowSubsidiariesMember
1286	Associates and joint ventures	Member			snp:AssociatesAndJointPartiesMember
1287	Disclosure of trade accounts and bills payable [line items]	LineItems			snp:DisclosureOfTradeAccountsAndBillsPayableLineItems
1288	Trade accounts payable	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
1289	Bills payable	Concept (Monetary)	As Of	Credit	snp:BillsPayable
1290	Trade accounts and bills payable measured at amortized cost	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
1291	42801 - Disclosure - CONTRACT LIABILITIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureContractLiabilitiesDetails
1292	Implied Table	Table	*	*	implied:Table
1293	CONTRACT LIABILITIES [abstract]	Abstract			ifrs-full:ContractLiabilitiesAbstract
1294	Contract liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:ContractLiabilities
1295	Contract liabilities recognized as revenue	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromContractsWithCustomers
1296	42901 - Disclosure - OTHER PAYABLES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureOtherPayablesDetails
1297	Implied Table	Table	*	*	implied:Table
1298	OTHER PAYABLES	Abstract			snp:AccruedExpensesAndOtherPayablesAbstract
1299	Salaries and welfare payable	Concept (Monetary)	As Of	Credit	snp:SalariesAndWelfarePayable
1300	Interest payable	Concept (Monetary)	As Of	Credit	ifrs-full:InterestPayable
1301	Payables for constructions	Concept (Monetary)	As Of	Credit	snp:PayablesForConstructions
1302	Other payables	Concept (Monetary)	As Of	Credit	snp:OtherPayablesOther
1303	Financial liabilities carried at amortized costs	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentFinancialLiabilitiesAtAmortisedCost
1304	Taxes other than income tax	Concept (Monetary)	As Of	Credit	snp:PayablesOnTaxesOtherThanIncomeTax
1305	Receipts in advance (Note 1(a))	Concept (Monetary)	As Of	Credit	snp:ReceiptsInAdvance
1306	Other payables, total	Concept (Monetary)	As Of	Credit	ifrs-full:OtherPayables
1307	43001 - Disclosure - PROVISIONS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureProvisionsDetails
1308	Implied Table	Table	*	*	implied:Table
1309	PROVISIONS [abstract]	Abstract			ifrs-full:ProvisionsAbstract
1310	Balance at beginning of year	Concept (Monetary)	As Of	Credit	snp:ProvisionOfObligationsForDismantlementOfOilAndGasProperties
1311	Provision for the year	Concept (Monetary)	For Period	Credit	snp:ProvisionOfObligationsForDismantlementOfOilAndGasPropertiesCurrent
1312	Accretion expenses	Concept (Monetary)	For Period	Debit	snp:AccretionExpenses
1313	Utilized for the year	Concept (Monetary)	For Period	Debit	snp:ProvisionOfObligationsForDismantlementOfOilAndGasPropertiesUtilized
1314	Exchange adjustments	Concept (Monetary)	For Period	Credit	snp:ProvisionOfObligationsForDismantlementOfOilAndGasPropertiesIncreaseDecreaseThroughNetExchangeDifferences
1315	Balance at end of year	Concept (Monetary)	As Of	Credit	snp:ProvisionOfObligationsForDismantlementOfOilAndGasProperties
1316	43101 - Disclosure - SHARE CAPITAL - REGISTERED, ISSUED AND FULLY PAID (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureShareCapitalRegisteredIssuedAndFullyPaidDetails
1317	Disclosure of classes of share capital [table]	Table	*	*	ifrs-full:DisclosureOfClassesOfShareCapitalTable
1318	Classes of share capital [axis]	Axis			ifrs-full:ClassesOfShareCapitalAxis
1319	Share capital [member]	Member			ifrs-full:ClassesOfShareCapitalMember
1320	A shares	Member			snp:ASharesMember
1321	H shares	Member			snp:HSharesMember
1322	Disclosure of classes of share capital [line items]	LineItems			ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1323	Number of shares registered, issued and fully paid	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssuedAndFullyPaid
1324	Par value per share	Concept (Share)	As Of		ifrs-full:ParValuePerShare
1325	Particulars of issued and paid up capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
1326	43102 - Disclosure - SHARE CAPITAL - REGISTERED, ISSUED AND FULLY PAID - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureShareCapitalRegisteredIssuedAndFullyPaidNarrativeDetails
1327	Disclosure of classes of share capital [table]	Table	*	*	ifrs-full:DisclosureOfClassesOfShareCapitalTable
1328	Range [axis]	Axis			ifrs-full:RangeAxis
1329	Ranges [member]	Member			ifrs-full:RangesMember
1330	Maximum	Member			ifrs-full:TopOfRangeMember
1331	Classes of share capital [axis]	Axis			ifrs-full:ClassesOfShareCapitalAxis
1332	Share capital [member]	Member			ifrs-full:ClassesOfShareCapitalMember
1333	A shares	Member			snp:ASharesMember
1334	H shares (including American Depositary Shares)	Member			snp:HSharesIncludingAmericanDepositarySharesMember
1335	H shares	Member			snp:HSharesMember
1336	American Depositary Shares	Member			snp:AmericanDepositarySharesMember
1337	Categories of districts [axis]	Axis			snp:CategoriesOfDistrictsAxis
1338	Districts [member]	Member			snp:DistrictsMember
1339	Outside PRC	Member			snp:OverseasMember
1340	Approaches to issuing shares [axis]	Axis			snp:ApproachesToIssuingSharesAxis
1341	Categories of approaches to issuing shares [member]	Member			snp:CategoriesOfApproachesToIssuingSharesMember
1342	Global initial public offering	Member			snp:GlobalInitialPublicOfferingMember
1343	Exercise of warrants	Member			snp:ExerciseOfWarrantsMember
1344	Conversion of convertible instruments	Member			snp:ConversionOfConvertibleInstrumentsMember
1345	The Placing	Member			snp:PlacingForIssuingSharesMember
1346	Conversion from retained earnings and share premium	Member			snp:ConversionFromRetainedEarningsAndSharePremiumMember
1347	Borrowings by name [axis]	Axis			ifrs-full:BorrowingsByNameAxis
1348	Borrowings by name [member]	Member			ifrs-full:BorrowingsByNameMember
1349	2011 Convertible Bonds	Member			snp:ConvertibleBonds2011Member
1350	Bonds with Warrants	Member			snp:BondsWithWarrantsMember
1351	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1352	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1353	Sinopec Group Company	Member			ifrs-full:ParentMember
1354	Disclosure of classes of share capital [line items]	LineItems			ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1355	Number of shares issued	Concept (Shares)	As Of		ifrs-full:NumberOfSharesIssued
1356	Number of shares authorised	Concept (Shares)	As Of		ifrs-full:NumberOfSharesAuthorised
1357	Par value per share	Concept (Share)	As Of		ifrs-full:ParValuePerShare
1358	Number of H shares each American Depositary Share represents	Concept (Shares)	As Of		snp:NumberOfHSharesEachAmericanDepositaryShareRepresents
1359	Share price	Concept (Monetary)	For Period		ifrs-full:WeightedAverageSharePrice
1360	Number of warrants entitled to bonds with warrants	Concept (Decimal)	As Of		snp:NumberOfWarrantsEntitledToBondsWithWarrants
1361	Aggregate gross proceeds from Placing	Concept (Monetary)	For Period	Debit	snp:ProceedsFromIssueOfOrdinarySharesGrossAmount
1362	Aggregate net proceeds from Placing	Concept (Monetary)	For Period	Debit	ifrs-full:ProceedsFromIssueOfOrdinaryShares
1363	Number of shares converted from retained earnings pursuant to shareholders' approval	Concept (Shares)	As Of		snp:NumberOfSharesConvertedFromRetainedEarningsPursuantToShareholdersApproval
1364	Number of share premium transfer to share capital	Concept (Shares)	As Of		snp:NumberOfSharePremiumTransferToShareCapital
1365	43103 - Disclosure - SHARE CAPITAL - CAPITAL MANAGEMENT - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureShareCapitalCapitalManagementNarrativeDetails
1366	Implied Table	Table	*	*	implied:Table
1367	SHARE CAPITAL [abstract]	Abstract			ifrs-full:DisclosureOfClassesOfShareCapitalAbstract
1368	Debt-to-capital ratio	Concept (Percent)	As Of		snp:DebtToCapitalRatio
1369	Liability-to-asset ratio	Concept (Percent)	As Of		snp:LiabilityToAssetRatio
1370	43201 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - OPERATING LEASE COMMITMENTS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilitiesOperatingLeaseCommitmentsDetails
1371	Disclosure of maturity analysis of operating lease payments [table]	Table	*	*	ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsTable
1372	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1373	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1374	Within one year	Member			ifrs-full:NotLaterThanOneYearMember
1375	Between one and two years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1376	Between two and three years	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1377	Between three and four years	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1378	Between four and five years	Member			ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1379	Later than five years	Member			ifrs-full:LaterThanFiveYearsMember
1380	Disclosure of maturity analysis of operating lease payments [line items]	LineItems			ifrs-full:DisclosureOfMaturityAnalysisOfOperatingLeasePaymentsLineItems
1381	Future minimum lease payments	Concept (Monetary)	As Of	Credit	ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1382	43202 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - CAPITAL COMMITMENTS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilitiesCapitalCommitmentsDetails
1383	Implied Table	Table	*	*	implied:Table
1384	COMMITMENTS AND CONTINGENT LIABILITIES [abstract]	Abstract			snp:CommitmentsAndContingentLiabilitiesAbstract
1385	Capital commitments [abstract]	Abstract			ifrs-full:CapitalCommitmentsAbstract
1386	Authorized and contracted for (i)	Concept (Monetary)	As Of	Credit	ifrs-full:ContractualCapitalCommitments
1387	Authorized but not contracted for	Concept (Monetary)	As Of	Credit	ifrs-full:AuthorisedCapitalCommitmentsButNotContractedFor
1388	Total capital commitments	Concept (Monetary)	As Of	Credit	ifrs-full:CapitalCommitments
1389	Investment commitments	Concept (Monetary)	As Of	Credit	snp:InvestmentCommitments
1390	43203 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - EXPLORATION AND PRODUCTION LICENSES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilitiesExplorationAndProductionLicensesDetails
1391	Disclosure of exploration and production licenses [table]	Table	*	*	snp:DisclosureOfExplorationAndProductionLicensesTable
1392	Range [axis]	Axis			ifrs-full:RangeAxis
1393	Ranges [member]	Member			ifrs-full:RangesMember
1394	Maximum	Member			ifrs-full:TopOfRangeMember
1395	Classes of intangible assets other than goodwill [axis]	Axis			ifrs-full:ClassesOfIntangibleAssetsOtherThanGoodwillAxis
1396	Intangible assets [member]	Member			ifrs-full:IntangibleAssetsOtherThanGoodwillMember
1397	Licences	Member			ifrs-full:LicencesMember
1398	Exploration licenses	Member			snp:ExplorationLicensesMember
1399	Production licenses	Member			snp:ProductionLicensesMember
1400	Scenario [axis]	Axis			snp:ScenarioAxis
1401	Scenario, Unspecified [member]	Member			snp:ScenarioUnspecifiedMember
1402	Licenses with special dispensation	Member			snp:LicensesWithSpecialDispensationMember
1403	Licenses without special dispensation	Member			snp:LicensesWithoutSpecialDispensationMember
1404	Disclosure of exploration and production licenses [line items]	LineItems			snp:DisclosureOfExplorationAndProductionLicensesLineItems
1405	Term of licenses	Concept (xbrli:durationItemType)	For Period		snp:TermOfLicenses
1406	Frequency of renewal	Concept (Integer)	For Period		snp:NumberOfRenewal
1407	Number of days prior to expiration of original term	Concept (xbrli:durationItemType)	For Period		snp:NumberOfDaysPriorToExpirationOfOriginalTerm
1408	Term of renewal	Concept (xbrli:durationItemType)	For Period		snp:TermOfRenewal
1409	Payments incurred of exploration licenses fee and production right usage fees	Concept (Monetary)	As Of	Debit	snp:PaymentsIncurredOfExplorationLicensesFeeAndProductionRightUsageFees
1410	43204 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - ESTIMATED FUTURE ANNUAL PAYMENTS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilitiesEstimatedFutureAnnualPaymentsDetails
1411	Disclosure of estimated future annual payments [table]	Table	*	*	snp:DisclosureOfEstimatedFutureAnnualPaymentsTable
1412	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1413	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1414	Within one year	Member			ifrs-full:NotLaterThanOneYearMember
1415	Between one and two years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1416	Between two and three years	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanThreeYearsMember
1417	Between three and four years	Member			ifrs-full:LaterThanThreeYearsAndNotLaterThanFourYearsMember
1418	Between four and five years	Member			ifrs-full:LaterThanFourYearsAndNotLaterThanFiveYearsMember
1419	Later than five years	Member			ifrs-full:LaterThanFiveYearsMember
1420	Disclosure of estimated future annual payments [line items]	LineItems			snp:DisclosureOfEstimatedFutureAnnualPaymentsLineItems
1421	Estimated future annual payments	Concept (Monetary)	For Period	Debit	snp:EstimatedFutureAnnualPayments
1422	43205 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - CONTINGENT LIABILITIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilitiesContingentLiabilitiesDetails
1423	Disclosure of contingent liabilities in business combination [table]	Table	*	*	ifrs-full:DisclosureOfContingentLiabilitiesInBusinessCombinationTable
1424	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1425	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1426	Joint ventures	Member			ifrs-full:JointVenturesMember
1427	Associates	Member			ifrs-full:AssociatesMember
1428	Zhongtian Synergetic Energy	Member			snp:ZhongtianSynergeticEnergyMember
1429	Others	Member			ifrs-full:OtherRelatedPartiesMember
1430	Disclosure of contingent liabilities in business combination [line items]	LineItems			ifrs-full:DisclosureOfContingentLiabilitiesInBusinessCombinationLineItems
1431	Guarantees	Concept (Monetary)	For Period	Debit	snp:Guarantees
1432	Liability accrued for a loss under guarantee	Concept (Monetary)	For Period	Debit	snp:ContingentLiabilityForGuarantees
1433	Guarantee in respect to standby credit facilities granted by banks	Concept (Monetary)	As Of	Credit	snp:ExposureToCreditRiskOnStandbyCreditFacilities
1434	43206 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - ENVIRONMENTAL CONTINGENCIES - NARRATIVES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureCommitmentsAndContingentLiabilitiesEnvironmentalContingenciesNarrativesDetails
1435	Implied Table	Table	*	*	implied:Table
1436	COMMITMENTS AND CONTINGENT LIABILITIES [abstract]	Abstract			snp:CommitmentsAndContingentLiabilitiesAbstract
1437	Pollutant discharge fees	Concept (Monetary)	For Period	Debit	snp:PollutantDischargeFees
1438	43301 - Disclosure - BUSINESS COMBINATION - ACQUISITION OF SHANGHAI SECCO (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureBusinessCombinationAcquisitionOfShanghaiSeccoDetails
1439	Disclosure of detailed information about business combination [table]	Table	*	*	ifrs-full:DisclosureOfBusinessCombinationsTable
1440	Legal Entity [axis]	Axis			dei:LegalEntityAxis
1441	Entity [domain]	Member			dei:EntityDomain
1442	Gaoqiao Petrochemical Company Limited	Member			snp:GaoqiaoPetrochemicalCoLtdMember
1443	Subsidiary	Member			ifrs-full:SubsidiariesMember
1444	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
1445	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
1446	Shanghai SECCO	Member			snp:ShanghaiSeccoPetrochemicalCompanyLimitedMember
1447	Counterparty Name [Axis]	Axis			srt:CounterpartyNameAxis
1448	Counterparty Name [Domain]	Member			srt:RepurchaseAgreementCounterpartyNameDomain
1449	BP Chemicals East China Investment Limited	Member			snp:BpChemicalsEastChinaInvestmentLimitedMember
1450	Disclosure of detailed information about business combination [line items]	LineItems			ifrs-full:DisclosureOfBusinessCombinationsLineItems
1451	Equity interest acquired	Concept (Percent)	As Of		ifrs-full:PercentageOfVotingEquityInterestsAcquired
1452	Equity interest held before the acquisition	Concept (Percent)	As Of		snp:IfrsBusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
1453	Interests held after the transaction	Concept (Percent)	For Period		snp:IfrsBusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
1454	Purchase consideration	Abstract			ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferredAbstract
1455	Acquisition date	Concept (Date)	For Period		ifrs-full:DateOfAcquisition2013
1456	Cash consideration for the purchase of 50% equity interest acquired	Concept (Monetary)	As Of	Credit	ifrs-full:CashTransferred
1457	Acquisition-date fair value of the 50% equity interest held before the acquisition	Concept (Monetary)	As Of	Credit	ifrs-full:EquityInterestsOfAcquirer
1458	Total purchase consideration	Concept (Monetary)	As Of	Credit	ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
1459	Assets and liabilities recognized as a result of the acquisition	Abstract			ifrs-full:AmountsRecognisedAsOfAcquisitionDateForEachMajorClassOfAssetsAcquiredAndLiabilitiesAssumedAbstract
1460	Cash and cash equivalents	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalentsRecognisedAsOfAcquisitionDate
1461	Trade accounts receivable, net	Concept (Monetary)	As Of	Debit	snp:TradeAccountsReceivablesRecognisedAsOfAcquisitionDate
1462	Bills receivable	Concept (Monetary)	As Of	Debit	snp:BillsReceivableRecognisedAsOfAcquisitionDate
1463	Inventories	Concept (Monetary)	As Of	Debit	ifrs-full:InventoryRecognisedAsOfAcquisitionDate
1464	Prepaid expenses and other current assets	Concept (Monetary)	As Of	Debit	snp:PrepaidExpensesAndOtherCurrentAssetsRecognisedAsOfAcquisitionDate
1465	Total current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssetsRecognisedAsOfAcquisitionDate
1466	Property, plant and equipment, net	Concept (Monetary)	As Of	Debit	ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
1467	Construction in progress	Concept (Monetary)	As Of	Debit	snp:ConstructionInProgressRecognisedAsOfAcquisitionDate
1468	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:DeferredTaxAssetsRecognisedAsOfAcquisitionDate
1469	Lease prepayments	Concept (Monetary)	As Of	Debit	snp:LeasePrepaymentsRecognisedAsOfAcquisitionDate
1470	Long-term prepayments and other assets	Concept (Monetary)	As Of	Debit	snp:LongTermPrepaymentsAndOtherAssetsRecognisedAsOfAcquisitionDate
1471	Total non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssetsRecognisedAsOfAcquisitionDate
1472	Total assets	Concept (Monetary)	As Of	Debit	snp:IdentifiableAssetsAcquired
1473	Trade accounts payables	Concept (Monetary)	As Of	Credit	snp:TradeAccountsPayablesRecognisedAsOfAcquisitionDate
1474	Accrued expenses and other payables	Concept (Monetary)	As Of	Credit	snp:AccruedExpensesAndOtherPayablesRecognisedAsOfAcquisitionDate
1475	Income tax payable	Concept (Monetary)	As Of	Credit	snp:IncomeTaxPayableRecognisedAsOfAcquisitionDate
1476	Total current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilitiesRecognisedAsOfAcquisitionDate
1477	Deferred tax liabilities (Note 23)	Concept (Monetary)	As Of	Credit	ifrs-full:DeferredTaxLiabilitiesRecognisedAsOfAcquisitionDate
1478	Net assets acquired	Concept (Monetary)	As Of	Debit	ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
1479	Goodwill (Note 20)	Concept (Monetary)	As Of	Debit	ifrs-full:Goodwill
1480	Gain on remeasurement of interests	Concept (Monetary)	For Period	Credit	ifrs-full:GainLossRecognisedAsResultOfRemeasuringToFairValueEquityInterestInAcquireeHeldByAcquirerBeforeBusinessCombination
1481	Revenue contributed since Acquisition date	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueOfAcquiree
1482	Net profit contributed since Acquisition date	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossOfAcquiree
1483	Consolidated pro-forma revenue	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueOfCombinedEntity
1484	Consolidated pro-forma profit	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossOfCombinedEntity
1485	43302 - Disclosure - BUSINESS COMBINATION - ACQUISITION OF GAOQIAO BRANCH OF SAMC (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureBusinessCombinationAcquisitionOfGaoqiaoBranchOfSamcDetails
1486	Disclosure of detailed information about business combination [table]	Table	*	*	ifrs-full:DisclosureOfBusinessCombinationsTable
1487	Business combinations [axis]	Axis			ifrs-full:BusinessCombinationsAxis
1488	Entity's total for business combinations [member]	Member			ifrs-full:EntitysTotalForBusinessCombinationsMember
1489	Gaoqiao Petrochemical Company Limited	Member			snp:GaoqiaoPetrochemicalCoLtdMember
1490	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1491	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1492	Sinopec Assets Management Corporation ("SAMC")	Member			snp:SinopecAssetsManagementCorporationSamcMember
1493	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1494	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1495	Gaoqiao Petrochemical Company Limited	Member			snp:GaoqiaoPetrochemicalCoLtdMember
1496	Disclosure of detailed information about business combination [line items]	LineItems			ifrs-full:DisclosureOfBusinessCombinationsLineItems
1497	Investments in subsidiaries	Concept (Monetary)	As Of	Debit	ifrs-full:InvestmentsInSubsidiaries
1498	Proportion of voting rights held in subsidiary	Concept (Percent)	For Period		ifrs-full:ProportionOfVotingPowerHeldInSubsidiary
1499	Non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
1500	Proportion of ownership interests held by non-controlling interests	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
1501	43401 - Disclosure - RELATED PARTY TRANSACTIONS - TRANSACTIONS WITH SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES, ASSOCIATES AND JOINT VENTURES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureRelatedPartyTransactionsTransactionsWithSinopecGroupCompanyAndFellowSubsidiariesAssociatesAndJointVenturesDetails
1502	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1503	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1504	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1505	Sinopec Group Company and fellow subsidiaries, associates and joint ventures	Member			snp:ParentCompanyAndSubsidiariesAssociatesAndJointVenturesMember
1506	Finance companies	Member			snp:FinanceCompaniesMember
1507	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1508	Sales of goods	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromSaleOfGoodsRelatedPartyTransactions
1509	Purchases	Concept (Monetary)	For Period	Debit	ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
1510	Transportation and storage	Concept (Monetary)	For Period	Debit	snp:TransportationAndStorageExpense
1511	Exploration and development services	Concept (Monetary)	For Period	Debit	snp:ExplorationAndDevelopmentServicesExpenseRelatedPartyTransactions
1512	Production related services	Concept (Monetary)	For Period	Debit	snp:ProductionRelatedServicesExpenseRelatedPartyTransactions
1513	Ancillary and social services	Concept (Monetary)	For Period	Debit	snp:AncillaryAndSocialServicesExpenseRelatedPartyTransactions
1514	Operating lease charges for land	Concept (Monetary)	For Period	Debit	snp:OperatingLeaseChargesForLandRelatedPartyTransactions
1515	Operating lease charges for buildings	Concept (Monetary)	For Period	Debit	snp:OperatingLeaseChargesForBuildingsRelatedPartyTransactions
1516	Other operating lease charges	Concept (Monetary)	For Period	Debit	snp:OtherOperatingLeaseChargesRelatedPartyTransactions
1517	Agency commission income	Concept (Monetary)	For Period	Credit	ifrs-full:FeeAndCommissionIncome
1518	Interest income	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromInterest
1519	Interest expense	Concept (Monetary)	For Period	Debit	ifrs-full:InterestExpense
1520	Net deposits (placed with)/withdrawn from related parties	Concept (Monetary)	For Period	Credit	snp:NetDepositsWithdrawnFromPlacedWithRelatedParties
1521	Net funds (repaid to)/obtained from related parties	Concept (Monetary)	For Period	Credit	snp:NetLoansObtainedFromRepaidToRelatedParties
1522	Guarantees	Concept (Monetary)	For Period	Debit	snp:Guarantees
1523	Deposits placed with related parties	Concept (Monetary)	As Of	Credit	snp:DepositsPlacedWithRelatedParties
1524	43402 - Disclosure - RELATED PARTY TRANSACTIONS - TRANSACTIONS WITH SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES, ASSOCIATES AND JOINT VENTURES - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureRelatedPartyTransactionsTransactionsWithSinopecGroupCompanyAndFellowSubsidiariesAssociatesAndJointVenturesNarrativeDetails
1525	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1526	Range [axis]	Axis			ifrs-full:RangeAxis
1527	Ranges [member]	Member			ifrs-full:RangesMember
1528	Minimum	Member			ifrs-full:BottomOfRangeMember
1529	Maximum	Member			ifrs-full:TopOfRangeMember
1530	Classes of property, plant and equipment [axis]	Axis			ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
1531	Property, plant and equipment	Member			ifrs-full:PropertyPlantAndEquipmentMember
1532	Land	Member			ifrs-full:LandMember
1533	Buildings	Member			ifrs-full:BuildingsMember
1534	Types of equity transfer agreement [axis]	Axis			snp:TypesOfEquityTransferAgreementAxis
1535	Types of equity transfer agreement [member]	Member			snp:TypesOfEquityTransferAgreementMember
1536	Mutual Provision Agreement	Member			snp:AgreementForMutualProvisionOfProductsAndAncillaryServicesMutualProvisionAgreementMember
1537	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1538	Terms to terminate agreements	Concept (xbrli:durationItemType)	For Period		snp:TermsToTerminateAgreements
1539	Percentage of profit margin of services	Concept (Percent)	For Period		snp:PercentageOfProfitMarginOfServices
1540	Lease term	Concept (xbrli:durationItemType)	For Period		snp:LeaseTerm
1541	Every number of years to renegotiate the rental amount for land	Concept (Integer)	For Period		snp:RenegotiateTermForRentalAmount
1542	Land area leased (in square meters)	Concept (num:areaItemType)	For Period		snp:LeaseSpaceLandAreaRelatedParty
1543	Land lease fee	Concept (Monetary)	As Of	Credit	snp:LandLeaseFeeRelatedParty
1544	43403 - Disclosure - RELATED PARTY TRANSACTIONS - TRANSACTIONS WITH SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES, ASSOCIATES AND JOINT VENTURES - AMOUNTS DUE FROM/TO RELATED PARTIES - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureRelatedPartyTransactionsTransactionsWithSinopecGroupCompanyAndFellowSubsidiariesAssociatesAndJointVenturesAmountsDueFromToRelatedPartiesNarrativeDetails
1545	Disclosure of transactions between related parties [table]	Table	*	*	ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1546	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1547	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1548	Sinopec Group Company and fellow subsidiaries, associates and joint ventures	Member			snp:ParentCompanyAndSubsidiariesAssociatesAndJointVenturesMember
1549	Sinopec Group Company	Member			ifrs-full:ParentMember
1550	Disclosure of transactions between related parties [line items]	LineItems			ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1551	Trade accounts receivable and bills receivable	Concept (Monetary)	As Of	Debit	ifrs-full:TradeAndOtherCurrentReceivables
1552	Prepaid expenses and other current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentPrepaymentsAndOtherCurrentAssets
1553	Long-term prepayments and other assets	Concept (Monetary)	As Of	Debit	snp:LongtermPrepaymentsAndOtherAssets
1554	Total	Concept (Monetary)	As Of	Debit	ifrs-full:AmountsReceivableRelatedPartyTransactions
1555	Trade accounts payable and bills payable	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayablesToRelatedParties
1556	Contract liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:ContractLiabilities
1557	Other payables	Concept (Monetary)	As Of	Credit	ifrs-full:OtherPayables
1558	Other long-term liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:OtherNoncurrentLiabilities
1559	Short-term loans and current portion of long-term loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLoansReceivedAndCurrentPortionOfNoncurrentLoansReceived
1560	Long-term loans excluding current portion from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:NoncurrentLoansFromGroupAndFellowSubsidiaries
1561	Total	Concept (Monetary)	As Of	Credit	ifrs-full:AmountsPayableRelatedPartyTransactions
1562	Maturity period of interest-free loan	Concept (Text/String)	For Period		ifrs-full:BorrowingsMaturity
1563	Interest-free loan	Concept (Monetary)	As Of	Credit	snp:InterestfreeLoan
1564	43404 - Disclosure - RELATED PARTY TRANSACTIONS - TRANSACTIONS WITH SINOPEC GROUP COMPANY AND FELLOW SUBSIDIARIES, ASSOCIATES AND JOINT VENTURES - KEY MANAGEMENT PERSONNEL EMOLUMENTS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureRelatedPartyTransactionsTransactionsWithSinopecGroupCompanyAndFellowSubsidiariesAssociatesAndJointVenturesKeyManagementPersonnelEmolumentsDetails
1565	Implied Table	Table	*	*	implied:Table
1566	RELATED PARTY TRANSACTIONS [abstract]	Abstract			ifrs-full:RelatedPartyTransactionsAbstract
1567	Short-term employee benefits	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1568	Retirement scheme contributions	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensationPostemploymentBenefits
1569	Key management personnel compensation	Concept (Monetary)	For Period	Debit	ifrs-full:KeyManagementPersonnelCompensation
1570	43501 - Disclosure - EMPLOYEE BENEFITS PLAN (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureEmployeeBenefitsPlanDetails
1571	Disclosure of contribution retirement plans [table]	Table	*	*	snp:DisclosureOfContributionRetirementPlansTable
1572	Range [axis]	Axis			ifrs-full:RangeAxis
1573	Ranges [member]	Member			ifrs-full:RangesMember
1574	Maximum	Member			ifrs-full:TopOfRangeMember
1575	Minimum	Member			ifrs-full:BottomOfRangeMember
1576	Disclosure of contribution retirement plan [line items]	LineItems			snp:DisclosureOfContributionRetirementPlanLineItems
1577	Percentage of salaries, bonuses and certain allowances	Concept (Percent)	As Of		snp:PercentageOfSalariesBonusesAndCertainAllowances
1578	Supplementary retirement plan rate	Concept (Percent)	As Of		snp:SupplementaryRetirementPlanRate
1579	Contributions	Concept (Monetary)	For Period	Credit	ifrs-full:EmployeeContributions
1580	43601 - Disclosure - SEGMENT REPORTING (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureSegmentReportingDetails
1581	Disclosure of operating segments [table]	Table	*	*	ifrs-full:DisclosureOfOperatingSegmentsTable
1582	Segments [axis]	Axis			ifrs-full:SegmentsAxis
1583	Segments [member]	Member			ifrs-full:SegmentsMember
1584	Exploration and production	Member			snp:ExplorationAndProductionMember
1585	Refining segment	Member			snp:RefiningSegmentMember
1586	Marketing and distribution	Member			snp:MarketingAndDistributionMember
1587	Chemicals segment	Member			snp:ChemicalsSegmentMember
1588	Corporate and others	Member			snp:CorporateAndOthersMember
1589	Segment consolidation items [axis]	Axis			ifrs-full:SegmentConsolidationItemsAxis
1590	Entity's total for segment consolidation items [member]	Member			ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
1591	Elimination of inter-segment sales	Member			ifrs-full:EliminationOfIntersegmentAmountsMember
1592	Geographical areas [axis]	Axis			ifrs-full:GeographicalAreasAxis
1593	Geographical areas [member]	Member			ifrs-full:GeographicalAreasMember
1594	Mainland China	Member			country:CN
1595	Singapore	Member			country:SG
1596	Others [member]	Member			snp:OtherCountriesMember
1597	Types of sales [axis]	Axis			snp:TypesOfSalesAxis
1598	Types of sales [member]	Member			snp:TypesOfSalesMember
1599	External sales	Member			snp:ExternalSalesMember
1600	Inter-segment sales	Member			snp:IntersegmentSalesMember
1601	Disclosure of operating segments [line items]	LineItems			ifrs-full:DisclosureOfOperatingSegmentsLineItems
1602	Number of reportable segments	Concept (Integer)	For Period		snp:IfrsNumberOfReportableSegments
1603	Sales of goods	Concept (Monetary)	For Period	Credit	ifrs-full:RevenueFromSaleOfGoods
1604	Other operating revenues	Concept (Monetary)	For Period	Credit	snp:OtherOperatingRevenues
1605	Total operating revenues	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1606	Total segment operating income	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossFromOperatingActivities
1607	Aggregate share of profits from associates and joint ventures	Concept (Monetary)	For Period	Credit	ifrs-full:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod
1608	Aggregate investment income	Concept (Monetary)	For Period	Credit	ifrs-full:InvestmentIncome
1609	Net finance costs	Concept (Monetary)	For Period	Credit	ifrs-full:FinanceIncomeCost
1610	Earnings before income tax	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossBeforeTax
1611	Total segment assets	Concept (Monetary)	As Of	Debit	snp:TotalSegmentAssets
1612	Interest in associates and joint ventures	Concept (Monetary)	As Of	Debit	snp:InterestInAssociatesAndJointVentures
1613	Available-for-sale financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsAvailableforsale
1614	Financial assets at fair value through other comprehensive income	Concept (Monetary)	As Of	Debit	ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome
1615	Deferred tax assets	Concept (Monetary)	As Of	Debit	ifrs-full:NetDeferredTaxAssets
1616	Cash and cash equivalents, time deposits with financial institutions	Concept (Monetary)	As Of	Debit	snp:CashAndCashEquivalentsAndTimeDepositsWithFinancialInstitutions
1617	Other unallocated assets	Concept (Monetary)	As Of	Debit	snp:OtherUnallocatedAssets
1618	Total assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1619	Total segment liabilities	Concept (Monetary)	As Of	Credit	snp:TotalSegmentLiabilities
1620	Short-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentDebtInstrumentsIssued
1621	Income tax payable	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentTaxLiabilitiesCurrent
1622	Long-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
1623	Loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:LoansFromGroupAndFellowSubsidiaries
1624	Deferred tax liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NetDeferredTaxLiabilities
1625	Other unallocated liabilities	Concept (Monetary)	As Of	Credit	snp:OtherUnallocatedLiabilities
1626	Total liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1627	Capital expenditure	Concept (Monetary)	For Period	Credit	snp:SegmentCapitalExpenditure
1628	Depreciation, depletion and amortization	Concept (Monetary)	For Period	Debit	ifrs-full:DepreciationAndAmortisationExpense
1629	Impairment losses on long-lived assets	Concept (Monetary)	For Period	Debit	snp:ImpairmentLossesOnLonglivedAssets
1630	Non-current assets	Concept (Monetary)	As Of	Debit	snp:NoncurrentAssetsExcludingFinancialInstrumentsAndDeferredTaxAssets
1631	43701 - Disclosure - PRINCIPAL SUBSIDIARIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalSubsidiariesDetails
1632	Disclosure of subsidiaries [table]	Table	*	*	ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesTable
1633	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1634	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1635	SIPL	Member			snp:SinopecInternationalPetroleumExplorationAndProductionLimitedMember
1636	Sinopec Great Wall Energy & Chemical Company Limited	Member			snp:SinopecGreatWallEnergyAndChemicalCompanyLimitedMember
1637	Sinopec Yangzi Petrochemical Company Limited	Member			snp:SinopecYangziPetrochemicalCompanyLimitedMember
1638	Sinopec Pipeline Storage & Transportation Company Limited	Member			snp:SinopecPipelineStorageAndTransportationCompanyLimitedMember
1639	Sinopec Yizheng Chemical Fibre Limited Liability Company	Member			snp:SinopecYizhengChemicalFibreLimitedLiabilityCompanyMember
1640	Sinopec Lubricant Company Limited	Member			snp:SinopecLubricantCompanyLimitedMember
1641	Sinopec Qingdao Petrochemical Company Limited	Member			snp:SinopecQingdaoPetrochemicalCompanyLimitedMember
1642	Sinopec Chemical Sales Company Limited	Member			snp:SinopecChemicalSalesCompanyLimitedMember
1643	China International United Petroleum and Chemical Company Limited	Member			snp:ChinaInternationalUnitedPetroleumAndChemicalCompanyLimitedMember
1644	SOIH	Member			snp:SinopecOverseasInvestmentHoldingLimitedMember
1645	Sinopec Catalyst Company Limited	Member			snp:SinopecCatalystCompanyLimitedMember
1646	China Petrochemical International Company Limited	Member			snp:ChinaPetrochemicalInternationalCompanyLimitedMember
1647	Sinopec Beihai Refining and Chemical Limited Liability Company	Member			snp:SinopecBeihaiRefiningAndChemicalLimitedLiabilityCompanyMember
1648	Sinopec Qingdao Refining and Chemical Company Limited	Member			snp:SinopecQingdaoRefiningAndChemicalCompanyLimitedMember
1649	Sinopec Hainan Refining and Chemical Company Limited	Member			snp:SinopecHainanRefiningAndChemicalCompanyLimitedMember
1650	Marketing Company	Member			snp:SinopecMarketingCompanyLimitedMember
1651	Shanghai SECCO	Member			snp:ShanghaiSeccoPetrochemicalCompanyLimitedMember
1652	Zhonghan Wuhan	Member			snp:SinopecskWuhanPetrochemicalCompanyLimitedMember
1653	Sinopec Kantons	Member			snp:SinopecKantonsHoldingsLimitedMember
1654	Gaoqiao Petrochemical Company Limited	Member			snp:GaoqiaoPetrochemicalCoLtdMember
1655	Shanghai Petrochemical	Member			snp:SinopecShanghaiPetrochemicalCompanyLimitedMember
1656	Fujian Petrochemical	Member			snp:FujianPetrochemicalCompanyLimitedMember
1657	Disclosure of subsidiaries [line items]	LineItems			ifrs-full:DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
1658	Description of nature of entity's operations and principal activities	Concept (Text/String)	For Period		ifrs-full:DescriptionOfNatureOfEntitysOperationsAndPrincipalActivities
1659	Particulars of issued and paid up capital	Concept (Monetary)	As Of	Credit	ifrs-full:IssuedCapital
1660	Interests held by the Company	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestInSubsidiary
1661	Interests held by non-controlling interests	Concept (Percent)	For Period		ifrs-full:ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
1662	43702 - Disclosure - PRINCIPAL SUBSIDIARIES - SUMMARIZED CONSOLIDATED BALANCE SHEET (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalSubsidiariesSummarizedConsolidatedBalanceSheetDetails
1663	Disclosure of summarized consolidated balance sheet [table]	Table	*	*	snp:DisclosureOfSummarizedConsolidatedBalanceSheetTable
1664	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1665	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1666	Marketing Company	Member			snp:SinopecMarketingCompanyLimitedMember
1667	SIPL	Member			snp:SinopecInternationalPetroleumExplorationAndProductionLimitedMember
1668	Shanghai Petrochemical	Member			snp:SinopecShanghaiPetrochemicalCompanyLimitedMember
1669	Fujian Petrochemical	Member			snp:FujianPetrochemicalCompanyLimitedMember
1670	Sinopec Kantons	Member			snp:SinopecKantonsHoldingsLimitedMember
1671	Shanghai SECCO	Member			snp:ShanghaiSeccoPetrochemicalCompanyLimitedMember
1672	Zhonghan Wuhan	Member			snp:SinopecskWuhanPetrochemicalCompanyLimitedMember
1673	Disclosure of summarized consolidated balance sheet [line items]	LineItems			snp:DisclosureOfSummarizedConsolidatedBalanceSheetLineItems
1674	Current assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssets
1675	Current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentLiabilities
1676	Net current (liabilities)/assets	Concept (Monetary)	As Of	Debit	ifrs-full:CurrentAssetsLiabilities
1677	Non-current assets	Concept (Monetary)	As Of	Debit	ifrs-full:NoncurrentAssets
1678	Non-current liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:NoncurrentLiabilities
1679	Net non-current assets	Concept (Monetary)	As Of	Debit	snp:NetNoncurrentAssets
1680	Net assets	Concept (Monetary)	As Of	Debit	ifrs-full:NetAssetsLiabilities
1681	Net assets attributable to owners of the Company	Concept (Monetary)	As Of	Credit	ifrs-full:EquityAttributableToOwnersOfParent
1682	Net assets attributable to non-controlling interests	Concept (Monetary)	As Of	Credit	ifrs-full:NoncontrollingInterests
1683	43703 - Disclosure - PRINCIPAL SUBSIDIARIES - SUMMARIZED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalSubsidiariesSummarizedConsolidatedStatementOfComprehensiveIncomeDetails
1684	Disclosure of summarized consolidated statement of comprehensive income [table]	Table	*	*	snp:DisclosureOfSummarizedConsolidatedStatementOfComprehensiveIncomeTable
1685	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1686	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1687	Marketing Company	Member			snp:SinopecMarketingCompanyLimitedMember
1688	SIPL	Member			snp:SinopecInternationalPetroleumExplorationAndProductionLimitedMember
1689	Shanghai Petrochemical	Member			snp:SinopecShanghaiPetrochemicalCompanyLimitedMember
1690	Fujian Petrochemical	Member			snp:FujianPetrochemicalCompanyLimitedMember
1691	Sinopec Kantons	Member			snp:SinopecKantonsHoldingsLimitedMember
1692	Shanghai SECCO	Member			snp:ShanghaiSeccoPetrochemicalCompanyLimitedMember
1693	Zhonghan Wuhan	Member			snp:SinopecskWuhanPetrochemicalCompanyLimitedMember
1694	Disclosure of summarized consolidated statement of comprehensive income [line items]	LineItems			snp:DisclosureOfSummarizedConsolidatedStatementOfComprehensiveIncomeLineItems
1695	Operating revenues	Concept (Monetary)	For Period	Credit	ifrs-full:Revenue
1696	Net income/(loss) for the year	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLoss
1697	Total comprehensive income/(loss)	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncome
1698	Comprehensive income/(loss) attributable to non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:ComprehensiveIncomeAttributableToNoncontrollingInterests
1699	Dividends paid to non-controlling interests	Concept (Monetary)	For Period	Credit	ifrs-full:DividendsPaidToNoncontrollingInterests
1700	43704 - Disclosure - PRINCIPAL SUBSIDIARIES - SUMMARIZED CONSOLIDATED STATEMENT OF CASH FLOWS (Details)	Network	*	*	http://www.sinopec.com/role/DisclosurePrincipalSubsidiariesSummarizedConsolidatedStatementOfCashFlowsDetails
1701	Disclosure of summarized statement of cash flows [table]	Table	*	*	snp:DisclosureOfSummarizedStatementOfCashFlowsTable
1702	Subsidiaries [axis]	Axis			ifrs-full:SignificantInvestmentsInSubsidiariesAxis
1703	Entity's total for subsidiaries [member]	Member			ifrs-full:EntitysTotalForSubsidiariesMember
1704	Marketing Company	Member			snp:SinopecMarketingCompanyLimitedMember
1705	SIPL	Member			snp:SinopecInternationalPetroleumExplorationAndProductionLimitedMember
1706	Shanghai Petrochemical	Member			snp:SinopecShanghaiPetrochemicalCompanyLimitedMember
1707	Fujian Petrochemical	Member			snp:FujianPetrochemicalCompanyLimitedMember
1708	Sinopec Kantons	Member			snp:SinopecKantonsHoldingsLimitedMember
1709	Shanghai SECCO	Member			snp:ShanghaiSeccoPetrochemicalCompanyLimitedMember
1710	Zhonghan Wuhan	Member			snp:SinopecskWuhanPetrochemicalCompanyLimitedMember
1711	Disclosure of summarized statement of cash flows [line items]	LineItems			snp:DisclosureOfSummarizedStatementOfCashFlowsLineItems
1712	Net cash generated from/(used in) operating activities	Concept (Monetary)	For Period		ifrs-full:CashFlowsFromUsedInOperatingActivities
1713	Net cash (used in)/generated from investing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInInvestingActivities
1714	Net cash (used in)/generated from financing activities	Concept (Monetary)	For Period	Debit	ifrs-full:CashFlowsFromUsedInFinancingActivities
1715	Net increase/(decrease) in cash and cash equivalents	Concept (Monetary)	For Period	Debit	ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
1716	Balance at beginning of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1717	Effect of foreign currency exchange rate changes	Concept (Monetary)	For Period	Debit	ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
1718	Balance at end of period	Concept (Monetary)	As Of	Debit	ifrs-full:CashAndCashEquivalents
1719	43801 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - CREDIT RISK (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesCreditRiskDetails
1720	Implied Table	Table	*	*	implied:Table
1721	FINANCIAL RISK MANAGEMENT AND FAIR VALUES [abstract]	Abstract			snp:FinancialRiskManagementAndFairValuesAbstract
1722	Number of single customer accounted for greater than ten percent of total accounts receivable	Concept (Integer)	As Of		snp:NumberOfSingleCustomerAccountedForGreaterThanTenPercentOfTotalAccountsReceivable
1723	Percentage of total accounts receivable	Concept (Percent)	As Of		snp:PercentageOfTotalAccountsReceivable
1724	Basis period of trade accounts receivables expected loss rates	Concept (xbrli:durationItemType)	For Period		snp:AccountsReceivablesCreditLossPeriodBasis
1725	Basis period of other receivables expected loss rates	Concept (xbrli:durationItemType)	For Period		snp:OtherReceivablesCreditLossPeriodBasis
1726	43802 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - LIQUIDITY RISK - Narrative (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesLiquidityRiskNarrativeDetails
1727	Implied Table	Table	*	*	implied:Table
1728	FINANCIAL RISK MANAGEMENT AND FAIR VALUES [abstract]	Abstract			snp:FinancialRiskManagementAndFairValuesAbstract
1729	Borrowings on unsecured basis due to standby credit facilities	Concept (Monetary)	As Of	Credit	snp:BorrowingsOnUnsecuredBasisDueToStandbyCreditFacilities
1730	Weighted average interest rate per annum	Concept (Percent)	As Of		snp:WeightedAverageInterestRatePerAnnum
1731	Outstanding borrowings under PRC financial institutions	Concept (Monetary)	As Of	Credit	snp:OutstandingBorrowingsUnderPrcFinancialInstitutions
1732	43803 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - LIQUIDITY RISK (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesLiquidityRiskDetails
1733	Disclosure of maturity analysis for financial liabilities held for managing liquidity risk [table]	Table	*	*	snp:DisclosureOfMaturityAnalysisForFinancialLiabilitiesHeldForManagingLiquidityRiskTable
1734	Maturity [axis]	Axis			ifrs-full:MaturityAxis
1735	Aggregated time bands [member]	Member			ifrs-full:AggregatedTimeBandsMember
1736	Within one year	Member			ifrs-full:NotLaterThanOneYearMember
1737	Between one and two years	Member			ifrs-full:LaterThanOneYearAndNotLaterThanTwoYearsMember
1738	More than 2 years but less than 5 years	Member			ifrs-full:LaterThanTwoYearsAndNotLaterThanFiveYearsMember
1739	Later than five years	Member			ifrs-full:LaterThanFiveYearsMember
1740	Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items]	LineItems			ifrs-full:DisclosureOfMaturityAnalysisForFinancialAssetsHeldForManagingLiquidityRiskLineItems
1741	Short-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
1742	Long-term debts	Concept (Monetary)	As Of	Credit	ifrs-full:LongtermBorrowings
1743	Loans from Sinopec Group Company and fellow subsidiaries	Concept (Monetary)	As Of	Credit	snp:LoansFromGroupAndFellowSubsidiaries
1744	Derivative financial instruments	Concept (Monetary)	As Of	Credit	ifrs-full:DerivativeFinancialLiabilities
1745	Trade accounts payable and bills payable	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherCurrentPayables
1746	Other payables	Concept (Monetary)	As Of	Credit	ifrs-full:CurrentFinancialLiabilitiesAtAmortisedCost
1747	Financial liabilities with contractual maturities	Concept (Monetary)	As Of	Credit	snp:FinancialLiabilitiesWithContractualMaturities
1748	Short-term debts, undiscounted cash flows	Concept (Monetary)	As Of	Credit	snp:CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowingsUndiscountedCashFlows
1749	Long-term debts, undiscounted cash flows	Concept (Monetary)	As Of	Credit	snp:LongtermDebtsUndiscountedCashFlows
1750	Loans from Sinopec Group Company and fellow subsidiaries, undiscounted cash flows	Concept (Monetary)	As Of	Credit	snp:CurrentLoansFromGroupAndFellowSubsidiariesUndiscountedCashFlows
1751	Derivative financial liabilities, undiscounted cash flows	Concept (Monetary)	As Of	Credit	ifrs-full:DerivativeFinancialLiabilitiesUndiscountedCashFlows
1752	Trade accounts payable and bills payable, undiscounted cash flow	Concept (Monetary)	As Of	Credit	ifrs-full:TradeAndOtherPayablesUndiscountedCashFlows
1753	Other payables, undiscounted cash flow	Concept (Monetary)	As Of	Credit	snp:OtherPayablesUndiscountedCashFlow
1754	Total contractual undiscounted cash flows	Concept (Monetary)	As Of	Credit	snp:TotalContractualUndiscountedCashFlow
1755	43804 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - CURRENCY RISK (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesCurrencyRiskDetails
1756	Disclosure of nature and extent of risks arising from financial instruments [table]	Table	*	*	ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
1757	Currency [Axis]	Axis			srt:CurrencyAxis
1758	All currencies [member]	Member			currency:AllCurrenciesDomain
1759	US Dollar denominated	Member			currency:USD
1760	Disclosure of nature and extent of risks arising from financial instruments [line items]	LineItems			ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
1761	Gross exposure arising from loans	Concept (Monetary)	As Of	Credit	snp:GrossExposureArisingFromLoansAndBorrowings
1762	Increase/decrease rate of RMB against foreign currencies	Concept (Percent)	For Period		snp:IncreaseDecreaseRateOfRmbAgainstForeignCurrencies
1763	Increase(decrease) of net income due to rate of RMB against foreign currencies	Concept (Monetary)	For Period	Credit	snp:IncreaseDecreaseOfNetIncomeDueToRateOfRmbAgainstForeignCurrencies
1764	43805 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - INTEREST RATE RISK (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesInterestRateRiskDetails
1765	Implied Table	Table	*	*	implied:Table
1766	FINANCIAL RISK MANAGEMENT AND FAIR VALUES [abstract]	Abstract			snp:FinancialRiskManagementAndFairValuesAbstract
1767	Estimated increase/decrease) of variable interest rate on basis points	Concept (Integer)	For Period		snp:BasisPointsOfEstimatedIncreaseDecreaseInVariableInterestRate
1768	Decrease/Increase in net income attributed to interest rate risk	Concept (Monetary)	For Period		snp:DecreaseIncreaseInNetIncomeAttributedToInterestRateRisk
1769	43806 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - COMMODITY RISK (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesCommodityRiskDetails
1770	Implied Table	Table	*	*	implied:Table
1771	FINANCIAL RISK MANAGEMENT AND FAIR VALUES [abstract]	Abstract			snp:FinancialRiskManagementAndFairValuesAbstract
1772	Derivative financial assets	Concept (Monetary)	As Of	Debit	ifrs-full:DerivativeFinancialAssetsHeldForHedging
1773	Derivative financial liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:DerivativeFinancialLiabilitiesHeldForHedging
1774	Increase/decrease in basic price of derivative financial instruments	Concept (Decimal)	For Period		snp:IncreaseDecreaseInBasicPriceOfDerivativeFinancialInstruments
1775	Decrease/Increase in net income attributed to commodity price risk	Concept (Monetary)	For Period	Debit	snp:DecreaseIncreaseInNetIncomeAttributedToCommodityPriceRisk
1776	Decrease/Increase in other reserves attributed to commodity price risk	Concept (Monetary)	For Period	Debit	snp:DecreaseIncreaseInOtherReservesAttributedToCommodityPriceRisk
1777	43807 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - FINANCIAL INSTRUMENTS CARRIED AT FAIR VALUE - ASSETS AND LIABILITIES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesFinancialInstrumentsCarriedAtFairValueAssetsAndLiabilitiesDetails
1778	Disclosure of fair value measurement of assets [table]	Table	*	*	ifrs-full:DisclosureOfFairValueMeasurementOfAssetsTable
1779	Classes of assets [axis]	Axis			ifrs-full:ClassesOfAssetsAxis
1780	Assets [member]	Member			ifrs-full:ClassesOfAssetsMember
1781	Structured deposit	Member			snp:StructuredDepositMember
1782	Available-for-sale financial assets - listed	Member			snp:AvailableforsaleFinancialAssetsListedMember
1783	Equity investments	Member			ifrs-full:EquityInvestmentsMember
1784	Derivative financial instruments	Member			ifrs-full:DerivativesMember
1785	Classes of liabilities [axis]	Axis			ifrs-full:ClassesOfLiabilitiesAxis
1786	Liabilities [member]	Member			ifrs-full:LiabilitiesMember
1787	Derivative financial instruments	Member			ifrs-full:DerivativesMember
1788	Levels of fair value hierarchy [axis]	Axis			ifrs-full:LevelsOfFairValueHierarchyAxis
1789	All levels of fair value hierarchy [member]	Member			ifrs-full:AllLevelsOfFairValueHierarchyMember
1790	Level 1 of fair value hierarchy	Member			ifrs-full:Level1OfFairValueHierarchyMember
1791	Level 2 of fair value hierarchy	Member			ifrs-full:Level2OfFairValueHierarchyMember
1792	Level 3 of fair value hierarchy	Member			ifrs-full:Level3OfFairValueHierarchyMember
1793	Classes of financial liabilities [axis]	Axis			ifrs-full:ClassesOfFinancialLiabilitiesAxis
1794	Financial liabilities, class [member]	Member			ifrs-full:FinancialLiabilitiesMember
1795	Financial liabilities at fair value	Member			ifrs-full:FinancialLiabilitiesAtFairValueMember
1796	Classes of financial assets [axis]	Axis			ifrs-full:ClassesOfFinancialAssetsAxis
1797	Financial assets, class [member]	Member			ifrs-full:FinancialAssetsMember
1798	Financial assets at fair value through profit or loss	Member			ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1799	Financial assets at fair value	Member			ifrs-full:FinancialAssetsAtFairValueMember
1800	Categories of financial assets [axis]	Axis			ifrs-full:CategoriesOfFinancialAssetsAxis
1801	Financial assets, category [member]	Member			ifrs-full:FinancialAssetsCategoryMember
1802	Financial assets at fair value through other comprehensive income	Member			ifrs-full:FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
1803	Disclosure of fair value measurement of assets [line items]	LineItems			ifrs-full:DisclosureOfFairValueMeasurementOfAssetsLineItems
1804	Assets	Concept (Monetary)	As Of	Debit	ifrs-full:Assets
1805	Liabilities	Concept (Monetary)	As Of	Credit	ifrs-full:Liabilities
1806	43808 - Disclosure - FINANCIAL RISK MANAGEMENT AND FAIR VALUES - FINANCIAL INSTRUMENTS CARRIED OTHER THAN FAIR VALUE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureFinancialRiskManagementAndFairValuesFinancialInstrumentsCarriedOtherThanFairValueDetails
1807	Disclosure of detailed information about fair values of financial instruments carried at other than fair value [table]	Table	*	*	snp:DisclosureOfDetailedInformationAboutFairValuesOfFinancialInstrumentsCarriedAtOtherThanFairValueTable
1808	Range [axis]	Axis			ifrs-full:RangeAxis
1809	Ranges [member]	Member			ifrs-full:RangesMember
1810	Minimum	Member			ifrs-full:BottomOfRangeMember
1811	Maximum	Member			ifrs-full:TopOfRangeMember
1812	Disclosure of detailed information about fair values of financial instruments carried at other than fair value [line items]	LineItems			snp:DisclosureOfDetailedInformationAboutFairValuesOfFinancialInstrumentsCarriedAtOtherThanFairValueLineItems
1813	Current market interest rates	Concept (Percent)	For Period		snp:CurrentMarketInterestRates
1814	Carrying amount	Concept (Monetary)	As Of	Credit	snp:CarryingAmountOfFinancialInstruments
1815	Fair value	Concept (Monetary)	As Of	Credit	snp:FairValueOfFinancialInstruments
1816	44101 - Disclosure - RESERVES (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureReservesDetails
1817	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
1818	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1819	Equity [member]	Member			ifrs-full:EquityMember
1820	Capital reserve	Member			ifrs-full:CapitalReserveMember
1821	Share premium	Member			ifrs-full:SharePremiumMember
1822	Statutory surplus reserve	Member			ifrs-full:StatutoryReserveMember
1823	Discretionary surplus reserve	Member			ifrs-full:ReserveOfDiscretionaryParticipationFeaturesMember
1824	Other reserves	Member			ifrs-full:OtherReservesMember
1825	Retained earnings	Member			ifrs-full:RetainedEarningsMember
1826	Categories of related parties [axis]	Axis			ifrs-full:CategoriesOfRelatedPartiesAxis
1827	Entity's total for related parties [member]	Member			ifrs-full:EntitysTotalForRelatedPartiesMember
1828	Sinopec Assets Management Corporation ("SAMC")	Member			snp:SinopecAssetsManagementCorporationSamcMember
1829	Retrospective application and retrospective restatement [axis]	Axis			ifrs-full:RetrospectiveApplicationAndRetrospectiveRestatementAxis
1830	Currently stated [member]	Member			ifrs-full:RestatedMember
1831	Change in accounting policy (Note 1(a))	Member			ifrs-full:FinancialEffectOfChangesInAccountingPolicyMember
1832	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
1833	Change in accounting policy	Concept (Monetary)	As Of	Credit	snp:IfrsCumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
1834	Balance at beginning of year	Concept (Monetary)	As Of	Credit	snp:Reserves
1835	Balance as of January 1	Concept (Monetary)	As Of	Credit	snp:ReservesAdjustedForCumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
1836	Transaction with non-controlling interests	Concept (Monetary)	For Period	Credit	snp:TransactionWithNoncontrollingInterests
1837	Other comprehensive income	Concept (Monetary)	For Period	Credit	ifrs-full:OtherComprehensiveIncome
1838	Amounts transferred to cash flow hedge reserves initially recognized by hedged items	Concept (Monetary)	For Period	Credit	snp:AmountsTransferredToCashFlowHedgeReservesInitiallyRecognisedByHedgedItems
1839	Net income attributable to ordinary owners of the Company	Concept (Monetary)	For Period	Credit	ifrs-full:ProfitLossAttributableToOwnersOfParent
1840	Final dividend inspect of the previous year, approved and paid during the year (Note (e))	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears
1841	Interim dividend (Note (f))	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToCurrentYear
1842	Appropriation	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
1843	Others	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughTransfersAndOtherChangesEquity
1844	Balance at end of year	Concept (Monetary)	As Of	Credit	snp:Reserves
1845	44102 - Disclosure - RESERVES - NARRATIVE (Details)	Network	*	*	http://www.sinopec.com/role/DisclosureReservesNarrativeDetails
1846	Statement of changes in equity [table]	Table	*	*	ifrs-full:StatementOfChangesInEquityTable
1847	Range [axis]	Axis			ifrs-full:RangeAxis
1848	Ranges [member]	Member			ifrs-full:RangesMember
1849	Minimum	Member			ifrs-full:BottomOfRangeMember
1850	Maximum	Member			ifrs-full:TopOfRangeMember
1851	Components of equity [axis]	Axis			ifrs-full:ComponentsOfEquityAxis
1852	Equity [member]	Member			ifrs-full:EquityMember
1853	Statutory surplus reserve	Member			ifrs-full:StatutoryReserveMember
1854	Statement of changes in equity [line items]	LineItems			ifrs-full:StatementOfChangesInEquityLineItems
1855	Stated rate of net income transferred to statutory surplus reserve	Concept (Percent)	For Period		snp:StatedRateOfNetIncomeTransferredToStatutorySurplusReserve
1856	Stated rate of reserve to registered capital	Concept (Percent)	For Period		snp:StatedRateOfReserveToRegisteredCapital
1857	Appropriation	Concept (Monetary)	For Period	Credit	ifrs-full:IncreaseDecreaseThroughAppropriationOfRetainedEarnings
1858	Amount of retained earnings available for distribution	Concept (Monetary)	As Of	Credit	snp:RetainedEarningsAvailableForDistribution
1859	Final dividend per share in respect of the year proposed	Concept (Share)	For Period		ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
1860	Final dividend per share in respect of the year approved	Concept (Share)	As Of		snp:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYearsPerShare
1861	Final dividend in respect of the year proposed	Concept (Monetary)	For Period		ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
1862	Final dividend in respect of the year approved	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToPriorYears
1863	Interim dividend per share for the year	Concept (Share)	As Of		snp:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToCurrentYearsPerShare
1864	Interim dividend	Concept (Monetary)	For Period	Debit	ifrs-full:DividendsRecognisedAsDistributionsToOwnersOfParentRelatingToCurrentYear