Husky Energy Inc. (SEC Filing Page | XBRL Cloud Viewer | XBRL Instance)

Line Label Object Class Period Type Balance Report ElementName
1 0001000 - Document - DEI Document Network

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 http://www.huskyenergy.ca/role/DeiDocument
2 Implied Table Table

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3 Document Information [Abstract] Abstract huskf:DocumentInformationAbstract
4 Document Type Concept (Submission Type) For Period dei:DocumentType
5 Document Period End Date Concept (Date) For Period dei:DocumentPeriodEndDate
6 Document Fiscal Year Focus Concept (Year) For Period dei:DocumentFiscalYearFocus
7 Document Fiscal Period Focus Concept (Fiscal Period) For Period dei:DocumentFiscalPeriodFocus
8 Entity Registrant Name Concept (Text/String) For Period dei:EntityRegistrantName
9 Entity Central Index Key Concept (CIK Number) For Period dei:EntityCentralIndexKey
10 Amendment Flag Concept (Yes/No) For Period dei:AmendmentFlag
11 Entity Emerging Growth Company Concept (Yes/No) For Period dei:EntityEmergingGrowthCompany
12 Current Fiscal Year End Date Concept (Month/Day) For Period dei:CurrentFiscalYearEndDate
13 Entity Current Reporting Status Concept (Yes/No) For Period dei:EntityCurrentReportingStatus
14 Entity Common Stock, Shares Outstanding Concept (Shares) As Of dei:EntityCommonStockSharesOutstanding
15 1001000 - Statement - Consolidated Balance Sheets Network

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 http://www.huskyenergy.ca/role/ConsolidatedBalanceSheets
16 Implied Table Table

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17 Statement of financial position [abstract] Abstract ifrs-full:StatementOfFinancialPositionAbstract
18 Assets Abstract ifrs-full:AssetsAbstract
19 Current assets Abstract ifrs-full:CurrentAssetsAbstract
20 Cash and cash equivalents (note 4) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
21 Accounts receivable (notes 5, 24) Concept (Monetary) As Of Debit ifrs-full:TradeAndOtherCurrentReceivables
22 Income taxes receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsCurrent
23 Inventories (note 6) Concept (Monetary) As Of Debit ifrs-full:Inventories
24 Prepaid expenses Concept (Monetary) As Of Debit ifrs-full:CurrentPrepaidExpenses
25 Restricted cash (notes 7, 16) Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
26 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
27 Non-current assets Abstract ifrs-full:NoncurrentAssetsAbstract
28 Restricted cash (notes 7, 16) Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
29 Exploration and evaluation assets (note 8) Concept (Monetary) As Of Debit ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources
30 Property, plant and equipment, net (note 9) Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
31 Goodwill (note 10) Concept (Monetary) As Of Debit ifrs-full:Goodwill
32 Investment in joint ventures (note 11) Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
33 Long-term income taxes receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsNoncurrent
34 Other assets (note 12) Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
35 Total Assets Concept (Monetary) As Of Debit ifrs-full:Assets
36 Liabilities and Shareholders’ Equity Abstract ifrs-full:EquityAndLiabilitiesAbstract
37 Current liabilities Abstract ifrs-full:CurrentLiabilitiesAbstract
38 Accounts payable and accrued liabilities (note 14) Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
39 Short-term debt (note 15) Concept (Monetary) As Of Credit ifrs-full:ShorttermBorrowings
40 Long-term debt due within one year (note 15) Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
41 Asset retirement obligations (note 16) Concept (Monetary) As Of Credit ifrs-full:ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts
42 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
43 Non-current liabilities Abstract ifrs-full:NoncurrentLiabilitiesAbstract
44 Long-term debt (note 15) Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
45 Other long-term liabilities (note 17) Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentFinancialLiabilities
46 Asset retirement obligations (note 16) Concept (Monetary) As Of Credit ifrs-full:LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts
47 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
48 Total Liabilities Concept (Monetary) As Of Credit ifrs-full:Liabilities
49 Shareholders’ equity Abstract ifrs-full:EquityAbstract
50 Common shares (note 19) Concept (Monetary) As Of Credit huskf:IssuedCapitalCommonShares
51 Preferred shares (note 19) Concept (Monetary) As Of Credit huskf:IssuedCapitalPreferredShares
52 Contributed surplus Concept (Monetary) As Of Credit ifrs-full:AdditionalPaidinCapital
53 Retained earnings Concept (Monetary) As Of Credit ifrs-full:RetainedEarnings
54 Accumulated other comprehensive income Concept (Monetary) As Of Credit ifrs-full:AccumulatedOtherComprehensiveIncome
55 Non-controlling interest Concept (Monetary) As Of Credit ifrs-full:NoncontrollingInterests
56 Total Shareholders’ Equity Concept (Monetary) As Of Credit ifrs-full:Equity
57 Total Liabilities and Shareholders’ Equity Concept (Monetary) As Of Credit ifrs-full:EquityAndLiabilities
58 1002000 - Statement - Consolidated Statements of Income Network

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59 Implied Table Table

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60 Profit or loss [abstract] Abstract ifrs-full:IncomeStatementAbstract
61 Gross revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGoods
62 Royalties Concept (Monetary) For Period Debit ifrs-full:RoyaltyExpense
63 Marketing and other Concept (Monetary) For Period Debit huskf:MarketingandOtherContraRevenueItems
64 Revenues, net of royalties Concept (Monetary) For Period Credit ifrs-full:Revenue
65 Purchases of crude oil and products Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
66 Production, operating and transportation expenses (note 20) Concept (Monetary) For Period Debit huskf:ProductionOperatingandTransportationExpenses
67 Selling, general and administrative expenses (note 20) Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
68 Depletion, depreciation, amortization and impairment (note 9) Concept (Monetary) For Period Debit ifrs-full:DepreciationAmortisationAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
69 Exploration and evaluation expenses (note 8) Concept (Monetary) For Period Debit ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
70 Gain on sale of assets (note 9) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfPropertyPlantAndEquipment
71 Other – net (note 9) Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByFunction
72 Operating expense Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
73 Earnings from operating activities Concept (Monetary) For Period Credit ifrs-full:ProfitLossFromOperatingActivities
74 Share of equity investment gain (note 11) Concept (Monetary) For Period Credit ifrs-full:ShareOfProfitLossOfJointVenturesAccountedForUsingEquityMethod
75 Net foreign exchange gains (losses) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
76 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
77 Finance expenses Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
78 Financial Items Concept (Monetary) For Period Credit huskf:FinanceIncomeCostandNetForeignExchangeGainLoss
79 Earnings before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
80 Provisions for (recovery of) income taxes. current Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
81 Provisions for (recovery of) income taxes, deferred Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
82 Provisions for (recovery of) income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
83 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
84 Earnings per share (note 19) Abstract ifrs-full:EarningsPerShareAbstract
85 Earnings per share – basic ($/share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
86 Earnings per share – diluted ($/share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
87 Weighted average number of common shares outstanding (note 19) Abstract ifrs-full:WeightedAverageSharesAndAdjustedWeightedAverageSharesAbstract
88 Weighted average number of common shares outstanding, basic Concept (Shares) For Period ifrs-full:WeightedAverageShares
89 Weighted average number of common shares outstanding, diluted Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
90 1003000 - Statement - Consolidated Statements of Comprehensive Income (Loss) Statement Network

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91 Implied Table Table

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92 Statement of comprehensive income [abstract] Abstract ifrs-full:StatementOfComprehensiveIncomeAbstract
93 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
94 Other comprehensive income (loss) Abstract ifrs-full:OtherComprehensiveIncomeAbstract
95 Items that will not be reclassified into earnings, net of tax: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLossNetOfTaxAbstract
96 Remeasurements of pension plans (note 22) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
97 Items that may be reclassified into earnings, net of tax: Abstract ifrs-full:ComponentsOfOtherComprehensiveIncomeThatWillBeReclassifiedToProfitOrLossNetOfTaxAbstract
98 Derivatives designated as cash flow hedge (notes 24) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
99 Equity investment – share of other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
100 Exchange differences on translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
101 Hedge of net investment (note 24) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations
102 Other comprehensive income (loss) Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncome
103 Comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
104 1004000 - Statement - Consolidated Statements of Changes in Shareholders Equity Statement Network

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105 Statement of changes in equity [table] Table

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 ifrs-full:StatementOfChangesInEquityTable
106 Components of equity [axis] Axis ifrs-full:ComponentsOfEquityAxis
107 Equity [member] Member ifrs-full:EquityMember
108 Total Shareholders’ Equity Member ifrs-full:EquityAttributableToOwnersOfParentMember
109 Non-Controlling Interest Member ifrs-full:NoncontrollingInterestsMember
110 Issued capital Member ifrs-full:IssuedCapitalMember
111 Contributed Surplus Member ifrs-full:SharePremiumMember
112 Retained Earnings Member ifrs-full:RetainedEarningsMember
113 AOCI Member ifrs-full:AccumulatedOtherComprehensiveIncomeMember
114 Foreign Currency Translation Member ifrs-full:ReserveOfExchangeDifferencesOnTranslationMember
115 Hedging Member ifrs-full:ReserveOfGainsAndLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstrumentsMember
116 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
117 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
118 Common Shares Member ifrs-full:OrdinarySharesMember
119 Preferred Shares Member ifrs-full:PreferenceSharesMember
120 Statement of changes in equity [line items] LineItems ifrs-full:StatementOfChangesInEquityLineItems
121 Equity, beginning Concept (Monetary) As Of Credit ifrs-full:Equity
122 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
123 Remeasurements of pension plans Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans
124 Derivatives designated as cash flow hedges Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxCashFlowHedges
125 Equity investment - share of other comprehensive income Concept (Monetary) For Period Credit ifrs-full:ShareOfOtherComprehensiveIncomeOfAssociatesAndJointVenturesAccountedForUsingEquityMethodThatWillBeReclassifiedToProfitOrLossNetOfTax
126 Exchange differences on translation of foreign operations Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation
127 Other comprehensive income, net of tax, gains (losses) on hedging instruments that hedge investments in equity instruments Concept (Monetary) For Period Credit ifrs-full:OtherComprehensiveIncomeNetOfTaxGainsLossesOnHedgingInstrumentsThatHedgeInvestmentsInEquityInstruments
128 Comprehensive income Concept (Monetary) For Period Credit ifrs-full:ComprehensiveIncome
129 Dividends declared on common and preferred shares (note 19) Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
130 Share cancellation Concept (Monetary) For Period Credit ifrs-full:CancellationOfTreasuryShares
131 Share additions (note 19) Concept (Monetary) For Period Credit ifrs-full:SaleOrIssueOfTreasuryShares
132 Non-controlling interests Concept (Monetary) For Period Credit ifrs-full:DividendsPaidToNoncontrollingInterests
133 Equity, ending Concept (Monetary) As Of Credit ifrs-full:Equity
134 1004501 - Statement - Consolidated Statements of Changes in Shareholders Equity (Parenthetical) Network

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 http://www.huskyenergy.ca/role/ConsolidatedStatementsOfChangesInShareholdersEquityParenthetical
135 Implied Table Table

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136 Statement of changes in equity [abstract] Abstract ifrs-full:StatementOfChangesInEquityAbstract
137 Remeasurement of pension plans Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
138 Derivatives designated as cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
139 Exchange differences on translation of foreign operations Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
140 Hedge of net investment Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToHedgesOfNetInvestmentsInForeignOperationsOfOtherComprehensiveIncome
141 1005000 - Statement - Consolidated Statements of Cash Flows Network

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142 Disclosure of classes of share capital [table] Table

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 ifrs-full:DisclosureOfClassesOfShareCapitalTable
143 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
144 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
145 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
146 Preference shares [member] Member ifrs-full:PreferenceSharesMember
147 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
148 1005000 - Statement - Consolidated Statements of Cash Flows Network

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149 Implied Table Table

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150 Statement of cash flows [abstract] Abstract ifrs-full:StatementOfCashFlowsAbstract
151 Operating activities Abstract ifrs-full:CashFlowsFromUsedInOperatingActivitiesAbstract
152 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
153 Accretion (notes 16, 21) Concept (Monetary) For Period Debit huskf:AdjustmentsforAccretion
154 Depletion, depreciation, amortization and impairment (note 9) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDepreciationAndAmortisationExpenseAndImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss
155 Inventory write-down to net realizable value (note 6) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories
156 Exploration and evaluation expenses (note 8) Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInExplorationForAndEvaluationOfMineralResourcesClassifiedAsOperatingActivities
157 Deferred income taxes (note 18) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDeferredTaxExpense
158 Foreign exchange Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForUnrealisedForeignExchangeLossesGains
159 Stock-based compensation (notes 19, 20) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForSharebasedPayments
160 Gain on sale of assets (note 9) Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment
161 Unrealized mark to market loss (gain) (note 24) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFairValueGainsLosses
162 Share of equity investment gain (note 11) Concept (Monetary) For Period Credit ifrs-full:AdjustmentsForUndistributedProfitsOfInvestmentsAccountedForUsingEquityMethod
163 Income from reimbursements under insurance policies Concept (Monetary) For Period Credit ifrs-full:IncomeFromReimbursementsUnderInsurancePolicies
164 Other Concept (Monetary) For Period Debit ifrs-full:OtherAdjustmentsForNoncashItems
165 Settlement of asset retirement obligations (note 16) Concept (Monetary) For Period Credit huskf:PaymentsForDecommissioningRestorationAndRehabilitationCosts
166 Deferred revenue (note 17) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForIncreaseDecreaseInDeferredIncome
167 Distribution from joint ventures (note 11) Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsOperatingActivities
168 Change in non-cash working capital (note 23) Concept (Monetary) For Period Debit huskf:IncreaseDecreaseinWorkingCapitalfromOperatingActivities
169 Cash flow – operating activities Concept (Monetary) For Period ifrs-full:CashFlowsFromUsedInOperatingActivities
170 Financing activities Abstract ifrs-full:CashFlowsFromUsedInFinancingActivitiesAbstract
171 Long-term debt issuance (note 15) Concept (Monetary) For Period Debit ifrs-full:ProceedsFromNoncurrentBorrowings
172 Long-term debt repayment (note 15) Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
173 Debt issue costs (note 15) Concept (Monetary) For Period Credit ifrs-full:PaymentsForDebtIssueCosts
174 Dividends paid, classified as financing activities Concept (Monetary) For Period Credit ifrs-full:DividendsPaidClassifiedAsFinancingActivities
175 Other Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsFinancingActivities
176 Change in non-cash working capital (note 23) Concept (Monetary) For Period Debit huskf:IncreaseDecreaseinWorkingCapitalfromFinancingActivities
177 Cash flow – financing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInFinancingActivities
178 Investing activities Abstract ifrs-full:CashFlowsFromUsedInInvestingActivitiesAbstract
179 Capital expenditures Concept (Monetary) For Period Credit ifrs-full:PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
180 Capitalized interest (note 21) Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
181 Corporate acquisition (note 9) Concept (Monetary) For Period Credit ifrs-full:CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities
182 Proceeds from asset sales (note 9) Concept (Monetary) For Period Debit ifrs-full:ProceedsFromDisposalOfOilAndGasAssets
183 Contribution payable payment (note 11) Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
184 Contribution to joint ventures (note 11) Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireInterestsInJointVenturesClassifiedAsInvestingActivities
185 Other Concept (Monetary) For Period Debit ifrs-full:OtherInflowsOutflowsOfCashClassifiedAsInvestingActivities
186 Change in non-cash working capital (note 23) Concept (Monetary) For Period Debit huskf:IncreaseDecreaseinWorkingCapitalfromInvestingActivities
187 Cash flow – investing activities Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInInvestingActivities
188 Increase in cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInCashAndCashEquivalentsBeforeEffectOfExchangeRateChanges
189 Effect of exchange rates on cash and cash equivalents Concept (Monetary) For Period Debit ifrs-full:EffectOfExchangeRateChangesOnCashAndCashEquivalents
190 Cash and cash equivalents at beginning of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
191 Cash and cash equivalents at end of year Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
192 Net interest paid Concept (Monetary) For Period Credit ifrs-full:InterestPaidClassifiedAsInvestingActivities
193 Net Income taxes received (paid) Concept (Monetary) For Period Credit ifrs-full:IncomeTaxesPaidRefund
194 2101100 - Disclosure - Description of Business and Segmented Disclosures Network

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195 Implied Table Table

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196 Corporate Information And Statement Of IFRS Compliance [Abstract] Abstract huskf:CorporateInformationAndStatementOfIFRSComplianceAbstract
197 Description of Business and Segment Disclosures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNotesAndOtherExplanatoryInformationExplanatory
198 Disclosure of entity's operating segments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
199 2104100 - Disclosure - Basis of Presentation Network

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200 Implied Table Table

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201 Disclosure of changes in accounting policies, accounting estimates and errors [Abstract] Abstract huskf:DisclosureofchangesinaccountingpoliciesaccountingestimatesanderrorsAbstract
202 Basis of Presentation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfPreparationOfFinancialStatementsExplanatory
203 2107100 - Disclosure - Significant Accounting Policies Network

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204 Implied Table Table

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205 Disclosure of changes in accounting policies, accounting estimates and errors [Abstract] Abstract huskf:DisclosureofchangesinaccountingpoliciesaccountingestimatesanderrorsAbstract
206 Significant Account Policies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSummaryOfSignificantAccountingPoliciesExplanatory
207 2110100 - Disclosure - Cash and Cash Equivalents Network

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208 Implied Table Table

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209 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
210 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashAndCashEquivalentsExplanatory
211 2113100 - Disclosure - Accounts Receivable Network

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212 Implied Table Table

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213 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
214 Accounts Receivable Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherReceivablesExplanatory
215 2116100 - Disclosure - Inventories Network

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216 Implied Table Table

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217 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
218 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInventoriesExplanatory
219 2119100 - Disclosure - Restricted Cash Network

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220 Implied Table Table

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221 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
222 Restricted Cash Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRestrictedCashAndCashEquivalentsExplanatory
223 2122100 - Disclosure - Exploration and Evaluation Costs Network

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224 Implied Table Table

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225 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
226 Exploration and Evaluation Costs Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfExplorationAndEvaluationAssetsExplanatory
227 2125100 - Disclosure - Property, Plant and Equipment Network

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228 Implied Table Table

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229 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
230 Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfPropertyPlantAndEquipmentExplanatory
231 2128100 - Disclosure - Goodwill Network

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232 Implied Table Table

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233 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
234 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGoodwillExplanatory
235 2131100 - Disclosure - Joint Arrangements Network

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236 Implied Table Table

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237 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
238 Joint Arrangements Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestsInJointArrangementsExplanatory
239 2134100 - Disclosure - Other Assets Network

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240 Implied Table Table

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241 Miscellaneous non-current assets [abstract] Abstract ifrs-full:MiscellaneousNoncurrentAssetsAbstract
242 Other Assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherAssetsExplanatory
243 2137100 - Disclosure - Bank Operating Loans Network

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244 Implied Table Table

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245 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
246 Bank Operating Loans Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDebtSecuritiesExplanatory
247 2140100 - Disclosure - Accounts Payable and Accrued Liabilities Network

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248 Implied Table Table

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249 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
250 Accounts Payable and Accrued Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTradeAndOtherPayablesExplanatory
251 2143100 - Disclosure - Debt and Credit Facilities Network

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252 Implied Table Table

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253 Disclosure of borrowing costs [Abstract] Abstract huskf:DisclosureofborrowingcostsAbstract
254 Debt and Credit Facilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsExplanatory
255 2146100 - Disclosure - Asset Retirement Obligations Network

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256 Implied Table Table

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257 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
258 Asset Retirement Obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfInterestInFundsExplanatory
259 2149100 - Disclosure - Other Long-term Liabilities Network

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262 Other Long-term Liabilities Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentLiabilitiesExplanatory
263 2152100 - Disclosure - Income Taxes Network

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264 Implied Table Table

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265 Disclosure of income tax [Abstract] Abstract huskf:DisclosureofincometaxAbstract
266 Income Taxes Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIncomeTaxExplanatory
267 2155100 - Disclosure - Share Capital Network

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268 Implied Table Table

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270 Share Capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfShareCapitalReservesAndOtherEquityInterestExplanatory
271 2158100 - Disclosure - Production, Operating and Transportation and Selling, General, and Administrative Expenses Network

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272 Implied Table Table

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273 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
274 Production, Operating and Transportation and Selling, General and Administrative Expenses Concept (Text Block (HTML)) For Period huskf:DisclosureOfProductionOperatingandTransportationandSellingGeneralandAdministrativeExpensesTextBlock
275 2161100 - Disclosure - Financial Items Network

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276 Implied Table Table

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277 Disclosure of additional information [Abstract] Abstract huskf:DisclosureofadditionalinformationAbstract
278 Financial Items Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceIncomeExpenseExplanatory
279 2164100 - Disclosure - Pensions and Other Post-employment Benefits Network

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280 Implied Table Table

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281 Disclosure of employee benefits [Abstract] Abstract huskf:DisclosureofemployeebenefitsAbstract
282 Pensions and Other Post-employment Benefits Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEmployeeBenefitsExplanatory
283 2167100 - Disclosure - Cash Flows - Change in Non-cash Working Capital Network

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284 Implied Table Table

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285 Disclosure of cash flow statement [Abstract] Abstract huskf:DisclosureofcashflowstatementAbstract
286 Cash Flows - Change in Non-cash Working Capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCashFlowStatementExplanatory
287 2170100 - Disclosure - Financial Instruments and Risk Management Network

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288 Implied Table Table

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289 Disclosure of detailed information about financial instruments [abstract] Abstract ifrs-full:DisclosureOfFinancialInstrumentsAbstract
290 Financial Instruments and Risk Management Concept (Text Block (HTML)) For Period huskf:DisclosureOfFinancialInstrumentsAndFinancialRiskManagementTextBlock
291 2173100 - Disclosure - Related Party Transactions Network

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292 Implied Table Table

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293 Disclosure of related party [Abstract] Abstract huskf:DisclosureofrelatedpartyAbstract
294 Related Party Transactions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRelatedPartyExplanatory
295 2176100 - Disclosure - Commitments and Contingencies Network

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296 Implied Table Table

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297 Commitments and Contingencies [Abstract] Abstract huskf:CommitmentsandContingenciesAbstract
298 Commitments and Contingencies Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfCommitmentsAndContingentLiabilitiesExplanatory
299 2179100 - Disclosure - Capital Disclosures Network

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300 Implied Table Table

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302 Capital Disclosures Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfIssuedCapitalExplanatory
303 2183100 - Disclosure - Subsequent Events Subsequent Events Network

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304 Implied Table Table

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306 Subsequent Events Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEventsAfterReportingPeriodExplanatory
307 2207201 - Disclosure - Significant Accounting Policies (Policies) Network

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308 Implied Table Table

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310 Basis of Measurement and Statement of Compliance Concept (Text Block (HTML)) For Period ifrs-full:StatementOfIFRSCompliance
311 Measurement Bases Concept (Text Block (HTML)) For Period ifrs-full:ExplanationOfMeasurementBasesUsedInPreparingFinancialStatements
312 Principles of Consolidation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfBasisOfConsolidationExplanatory
313 Use of Estimates, Judgments and Assumptions Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfAccountingJudgementsAndEstimatesExplanatory
314 Functional and Presentation Currency Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFunctionalCurrencyExplanatory
315 Cash and Cash Equivalents Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyToDetermineComponentsOfCashAndCashEquivalents
316 Inventories Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForMeasuringInventories
317 Precious Metals Concept (Text Block (HTML)) For Period huskf:DescriptionofaccountingpolicyforpreciousmetalsPolicyTextBlock
318 Exploration and Evaluation Assets and Property, Plant and Equipment Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForExplorationAndEvaluationExpenditures
319 Joint Arrangements Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentsInJointVentures
320 Investments in Associates Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForInvestmentInAssociates
321 Business Combinations Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForBusinessCombinationsExplanatory
322 Goodwill Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGoodwillExplanatory
323 Impairment and Reversals of Impairment on Non-Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory
324 Asset Retirement Obligations (ARO) Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDecommissioningRestorationAndRehabilitationProvisionsExplanatory
325 Legal and Other Contingent Matters Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForContingentLiabilitiesAndContingentAssetsExplanatory
326 Financial Instruments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory
327 Derivative Instruments and Hedging Activities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForDerivativeFinancialInstrumentsAndHedgingExplanatory
328 Impairment of Financial Assets Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForImpairmentOfFinancialAssetsExplanatory
329 Description of accounting policy for employee benefits [text block] Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory
330 Income Taxes Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForIncomeTaxExplanatory
331 Description of accounting policy for non-monetary transactions [Policy Text Block] Concept (Text Block (HTML)) For Period huskf:DescriptionofaccountingpolicyfornonmonetarytransactionsPolicyTextBlock
332 Revenue Recognition Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForRecognitionOfRevenue
333 Foreign Currency Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForForeignCurrencyTranslationExplanatory
334 Share-based Payments Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForSharebasedPaymentTransactionsExplanatory
335 Earnings per Share Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForEarningsPerShareExplanatory
336 Government Grants Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForGovernmentGrants
337 Description of accounting policy for transactions with related parties [text block] Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTransactionsWithRelatedPartiesExplanatory
338 Recent Accounting Standards Concept (Text Block (HTML)) For Period huskf:DescriptionOfAccountingPolicyForNewStandardsOrInterpretationsNotAppliedPolicyTextBlock
339 Changes in Accounting Policy Concept (Text/String) For Period ifrs-full:DescriptionOfNatureOfChangeInAccountingPolicy
340 2301301 - Disclosure - Description of Business and Segmented Disclosures (Tables) Network

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341 Implied Table Table

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343 Disclosure of entity's operating segments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfEntitysReportableSegmentsExplanatory
344 2313301 - Disclosure - Accounts Receivable (Tables) Network

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345 Implied Table Table

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347 Accounts Receivable Concept (Text Block (HTML)) For Period huskf:TradeandOtherReceivablesTableTextBlock
348 2316301 - Disclosure - Inventories (Tables) Network

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349 Implied Table Table

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350 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
351 Schedule of Inventories Concept (Text Block (HTML)) For Period huskf:ScheduleofInventoriesTableTextBlock
352 2322301 - Disclosure - Exploration and Evaluation Costs (Tables) Network

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353 Implied Table Table

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354 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
355 Disclosure of detailed information about exploration and evaluation assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
356 Disclosure of exploration and evaluation expenses Concept (Text Block (HTML)) For Period huskf:DisclosureOfExplorationandEvaluationExpensesTableTextBlock
357 2325301 - Disclosure - Property, Plant and Equipment (Tables) Network

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358 Implied Table Table

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359 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
360 Disclosure of detailed information about property, plant and equipment Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory
361 Disclosure of assets under finance lease Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfRecognisedFinanceLeaseAsAssetsByLesseeExplanatory
362 Disclosure of purchase price allocation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDetailedInformationAboutBusinessCombinationsExplanatory
363 2328301 - Disclosure - Goodwill (Tables) Network

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364 Implied Table Table

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365 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
366 Disclosure of reconciliation of changes in goodwill Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillExplanatory
367 2331301 - Disclosure - Joint Arrangements (Tables) Network

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368 Disclosure of joint ventures [table] Table

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369 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
370 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
371 BP-Husky Refining LLC Member huskf:BPHuskyRefiningLLCMember
372 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
373 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
374 Husky-CNOOC Madura Ltd. Member huskf:HuskyCNOOCMaduraLtd.Member
375 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
376 2334301 - Disclosure - Other Assets (Tables) Network

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377 Implied Table Table

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378 Miscellaneous non-current assets [abstract] Abstract ifrs-full:MiscellaneousNoncurrentAssetsAbstract
379 Schedule of other assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherNoncurrentAssetsExplanatory
380 2340301 - Disclosure - Accounts Payable and Accrued Liabilities (Tables) Network

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381 Implied Table Table

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383 Schedule of accounts payable and accrued liabilities Concept (Text Block (HTML)) For Period ifrs-full:DescriptionOfAccountingPolicyForTradeAndOtherPayablesExplanatory
384 2343301 - Disclosure - Debt and Credit Facilities (Tables) Network

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385 Implied Table Table

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387 Schedule of short-term debt Concept (Text Block (HTML)) For Period huskf:ScheduleOfCurrentBorrowingsTableTextBlock
388 Schedule of long-term debt Concept (Text Block (HTML)) For Period huskf:ScheduleofNonCurrentBorrowingsTableTextBlock
389 Reconciliation of changes of liabilities to cash flows from financing activities Concept (Text Block (HTML)) For Period huskf:ReconciliationofChangesofLiabilitiestoCashFlowsfromFinancingActivitiesTableTextBlock
390 2346301 - Disclosure - Asset Retirement Obligations (Tables) Network

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391 Implied Table Table

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392 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
393 Reconciliation of the carrying amount of asset retirement obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfOtherProvisionsExplanatory
394 2349301 - Disclosure - Other Long-term Liabilities (Tables) Network

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395 Implied Table Table

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396 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
397 Schedule of other long-term liabilities Concept (Text Block (HTML)) For Period huskf:ScheduleofOtherLongTermLiabilitiesTableTextBlock
398 Schedule of finance lease obligations Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeExplanatory
399 Schedule of Deferred Revenue [Table Text Block] Concept (Text Block (HTML)) For Period huskf:ScheduleofDeferredRevenueTableTextBlock
400 2352301 - Disclosure - Income Taxes (Tables) Network

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401 Implied Table Table

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402 Disclosure of income tax [Abstract] Abstract huskf:DisclosureofincometaxAbstract
403 Disclosure of income tax expense (recovery) Concept (Text Block (HTML)) For Period huskf:DisclosureOfMajorComponentsOfTaxExpenseIncomeTableTextBlock
404 Disclosure of deferred tax items in OCI Concept (Text Block (HTML)) For Period huskf:DisclosureOfIncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeTableTextBlock
405 Disclosure of reconciliation of effective tax rate Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory
406 Disclosure of deferred tax liabilities and assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfDeferredTaxesExplanatory
407 2355301 - Disclosure - Share Capital (Tables) Network

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408 Implied Table Table

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410 Disclosure of classes of share capital Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfClassesOfShareCapitalExplanatory
411 2358301 - Disclosure - Production, Operating and Transportation and Selling, General, and Administrative Expenses (Tables) Network

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412 Implied Table Table

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413 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
414 Disclosure of production, operating and transportation expenses Concept (Text Block (HTML)) For Period huskf:DisclosureOfProductionOperatingandTransportationExpenseTableTextBlock
415 Disclosure of general and administrative expense Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfGeneralAndAdministrativeExpenseExplanatory
416 2361301 - Disclosure - Financial Items (Tables) Network

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417 Implied Table Table

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419 Schedule of financial items Concept (Text Block (HTML)) For Period huskf:DetailedDisclosureOfFinancialItemsTableTextBlock
420 2364301 - Disclosure - Pensions and Other Post-employment Benefits (Tables) Network

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421 Implied Table Table

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422 Disclosure of employee benefits [Abstract] Abstract huskf:DisclosureofemployeebenefitsAbstract
423 Disclosure of net benefit obligation Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetExplanatory
424 Disclosure of pension plan assets Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfPlanAssetsExplanatory
425 Disclosure of a defined benefit amount recognized in net earnings and OCI Concept (Text Block (HTML)) For Period huskf:DefinedBenefitPlanExpenseRecognizedInProfitOrLossAndOCIExplanatoryTableTextBlock
426 Disclosure of actuarial assumptions and sensitivity analysis Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfSensitivityAnalysisForActuarialAssumptionsExplanatory
427 2367301 - Disclosure - Cash Flows - Change in Non-cash Working Capital (Tables) Network

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428 Implied Table Table

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430 Disclosure Of Changes In Non-Cash Working Capital Concept (Text Block (HTML)) For Period huskf:DisclosureOfChangesInNonCashWorkingCapitalItemsTableTextBlock
431 2370301 - Disclosure - Financial Instruments and Risk Management (Tables) Network

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432 Disclosure of financial instruments by type of interest rate [table] Table

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433 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
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435 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
436 Disclosure of financial instruments by type of interest rate [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsByTypeOfInterestRateLineItems
437 Disclosure of fair value of financial instruments [text block] Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfFairValueOfFinancialInstrumentsExplanatory
438 2373301 - Disclosure - Related Party Transactions (Tables) Network

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439 Implied Table Table

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440 Disclosure of related party [Abstract] Abstract huskf:DisclosureofrelatedpartyAbstract
441 Related party transaction Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfJointOperationsExplanatory
442 Disclosure of transactions between related parties Concept (Text Block (HTML)) For Period ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesExplanatory
443 2376301 - Disclosure - Commitments and Contingencies (Tables) Network

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444 Implied Table Table

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446 Minimum Future Payments For Commitments Concept (Text Block (HTML)) For Period huskf:MinimumFuturePaymetnsCommitmentsAndContingentLiabilitiesTableTextBlock
447 2401402 - Disclosure - Description of Business and Segmented Disclosures - Income Statement (Details) Network

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448 Disclosure of operating segments [table] Table

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452 Downstream Member huskf:OperatingSegmentsDownstreamMember
453 Corporate and Eliminations(3) Member ifrs-full:EliminationOfIntersegmentAmountsMember
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459 Upgrading Member huskf:UpgradingMember
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467 Purchases of crude oil and products Concept (Monetary) For Period Debit ifrs-full:RawMaterialsAndConsumablesUsed
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469 Selling, general and administrative expenses (note 20) Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
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471 Expense arising from exploration for and evaluation of mineral resources Concept (Monetary) For Period Debit ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
472 Loss (gain) on sale of assets Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnDisposalsOfPropertyPlantAndEquipment
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482 Current tax expense (income) and adjustments for current tax of prior periods Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
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484 Tax expense (income) Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
485 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
486 Intersegment revenues Concept (Monetary) For Period Credit huskf:RevenuesIntersegment
487 Revenue from construction contracts Concept (Monetary) For Period Credit ifrs-full:RevenueFromConstructionContracts
488 Costs of construction contracts Concept (Monetary) For Period Debit huskf:ConstructionContractsExpense
489 Revenue from construction contracts, percentage of completion method Concept (Monetary) For Period Credit huskf:RevenueFromConstructionContractsPercentageofCompletionMethod
490 Costs of construction contracts, percentage of completion method Concept (Monetary) For Period Debit huskf:ConstructionContractExpensePercentageofCompletionMethod
491 2401403 - Disclosure - Description of Business and Segmented Disclosures - Segmented Financial Information (Details) Network

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492 Disclosure of disaggregation of revenue from contracts with customers [table] Table

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493 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
494 Carrying amount [member] Member ifrs-full:CarryingAmountMember
495 Cost Member ifrs-full:GrossCarryingAmountMember
496 Accumulated depletion, depreciation, amortization and impairment Member ifrs-full:AccumulatedImpairmentMember
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499 Exploration and Production(1) Member huskf:ExplorationandProductionMember
500 Infrastructure and Marketing(2) Member huskf:InfrastructureandMarketingMember
501 Upgrading Member huskf:UpgradingMember
502 Canadian Refined Products Member huskf:CanadianRefinedProductsMember
503 U.S. Refining and Marketing Member huskf:U.S.RefiningandMarketingMember
504 Segment consolidation items [axis] Axis ifrs-full:SegmentConsolidationItemsAxis
505 Entity's total for segment consolidation items [member] Member ifrs-full:EntitysTotalForSegmentConsolidationItemsMember
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507 Downstream Member huskf:OperatingSegmentsDownstreamMember
508 Corporate and Eliminations Member ifrs-full:EliminationOfIntersegmentAmountsMember
509 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
510 Expense arising from exploration for and evaluation of mineral resources Concept (Monetary) For Period Debit huskf:ExpensesArisingFromExplorationForandEvaluationOfMineralResourcesIncludingDepletionDepreciationAmortizationandImpairment
511 Expenditures on property, plant and equipment(2) Concept (Monetary) For Period Debit huskf:ExpenseArisingFromPropertyPlantandEquipment
512 Exploration and evaluation assets (note 8) Concept (Monetary) As Of Debit ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources
513 Developing and producing assets Concept (Monetary) As Of Debit huskf:DevelopingandProducingAssets
514 Other property, plant and equipment Concept (Monetary) As Of Debit ifrs-full:OtherPropertyPlantAndEquipment
515 Total exploration and evaluation assets and property, plant and equipment, net Concept (Monetary) As Of Debit huskf:ExplorationandEvaluationAssetsandPropertyPlantandEquipmentNet
516 Total Assets Concept (Monetary) As Of Debit ifrs-full:Assets
517 2401404 - Disclosure - Description of Business and Segmented Disclosures - Geographical (Details) Network

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 http://www.huskyenergy.ca/role/DescriptionOfBusinessAndSegmentedDisclosuresGeographicalDetails
518 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
519 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
520 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
521 Canada Member country:CA
522 United States Member country:US
523 China Member country:CN
524 Other International Member huskf:OtherInternationalMember
525 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
526 Gross revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGoods
527 Royalties Concept (Monetary) For Period Debit ifrs-full:RoyaltyExpense
528 Marketing and other Concept (Monetary) For Period Debit huskf:MarketingandOtherContraRevenueItems
529 Revenues, net of royalties Concept (Monetary) For Period Credit ifrs-full:Revenue
530 Restricted cash – non-current Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
531 Exploration and evaluation assets (note 8) Concept (Monetary) As Of Debit ifrs-full:AssetsArisingFromExplorationForAndEvaluationOfMineralResources
532 Property, plant and equipment, net Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
533 Goodwill (note 10) Concept (Monetary) As Of Debit ifrs-full:Goodwill
534 Investment in joint ventures (note 11) Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
535 Long-term income taxes receivable Concept (Monetary) As Of Debit ifrs-full:CurrentTaxAssetsNoncurrent
536 Other assets (note 12) Concept (Monetary) As Of Debit ifrs-full:OtherNoncurrentAssets
537 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
538 2401405 - Disclosure - Description of Business and Segmented Disclosures Disaggregation of Revenue (Details) Network

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 http://www.huskyenergy.ca/role/DescriptionOfBusinessAndSegmentedDisclosuresDisaggregationOfRevenueDetails
539 Disclosure of disaggregation of revenue from contracts with customers [table] Table

*

*

 ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable
540 Products and services [axis] Axis ifrs-full:ProductsAndServicesAxis
541 Products and services [member] Member ifrs-full:ProductsAndServicesMember
542 Light and Medium Crude Oil [Member] Member huskf:LightandMediumCrudeOilMember
543 Heavy Crude Oil [Member] Member huskf:HeavyCrudeOilMember
544 Bitumen [Member] Member huskf:BitumenMember
545 Crude Oil [Member] Member huskf:CrudeOilMember
546 Natural Gas Liquids [Member] Member srt:NaturalGasLiquidsReservesMember
547 Natural Gas [Member] Member srt:NaturalGasReservesMember
548 Infrastructure and Marketing(2) Member huskf:InfrastructureandMarketingMember
549 Synthetic Oil [Member] Member srt:SyntheticOilMember
550 Gasoline [Member] Member huskf:GasolineMember
551 Diesel and distillates [Member] Member huskf:DieselanddistillatesMember
552 Asphalt [Member] Member huskf:AsphaltMember
553 Other Refined Products [Member] Member huskf:OtherRefinedProductsMember
554 Refined Products [Member] Member huskf:RefinedProductsMember
555 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
556 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
557 Canada Member country:CA
558 United States Member country:US
559 China Member country:CN
560 Markets of customers [axis] Axis ifrs-full:MarketsOfCustomersAxis
561 Markets of customers [member] Member ifrs-full:MarketsOfCustomersMember
562 Types of customers [axis] Axis ifrs-full:TypesOfCustomersAxis
563 Types of customers [member] Member ifrs-full:TypesOfCustomersMember
564 Types of contracts [axis] Axis ifrs-full:TypesOfContractsAxis
565 Types of contracts [member] Member ifrs-full:TypesOfContractsMember
566 Contract duration [axis] Axis ifrs-full:ContractDurationAxis
567 Contract duration [member] Member ifrs-full:ContractDurationMember
568 Timing of transfer of goods or services [axis] Axis ifrs-full:TimingOfTransferOfGoodsOrServicesAxis
569 Timing of transfer of goods or services [member] Member ifrs-full:TimingOfTransferOfGoodsOrServicesMember
570 Sales channels [axis] Axis ifrs-full:SalesChannelsAxis
571 Sales channels [member] Member ifrs-full:SalesChannelsMember
572 Segments [axis] Axis ifrs-full:SegmentsAxis
573 Segments [member] Member ifrs-full:SegmentsMember
574 Upgrading Member huskf:UpgradingMember
575 Canadian Refined Products Member huskf:CanadianRefinedProductsMember
576 U.S. Refining and Marketing Member huskf:U.S.RefiningandMarketingMember
577 Downstream Member huskf:OperatingSegmentsDownstreamMember
578 Corporate and Eliminations(3) Member ifrs-full:EliminationOfIntersegmentAmountsMember
579 Upstream Member huskf:OperatingSegmentsUpstreamMember
580 Exploration and Production(1) Member huskf:ExplorationandProductionMember
581 Infrastructure and Marketing(2) Member huskf:InfrastructureandMarketingMember
582 Disclosure of disaggregation of revenue from contracts with customers [line items] LineItems ifrs-full:DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems
583 Gross revenues Concept (Monetary) For Period Credit ifrs-full:RevenueFromSaleOfGoods
584 2410401 - Disclosure - Cash and Cash Equivalents (Details) Network

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 http://www.huskyenergy.ca/role/CashAndCashEquivalentsDetails
585 Implied Table Table

*

*

 implied:Table
586 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
587 Cash Concept (Monetary) As Of Debit ifrs-full:Cash
588 Short-term investments, classified as cash equivalents Concept (Monetary) As Of Debit ifrs-full:ShorttermInvestmentsClassifiedAsCashEquivalents
589 2413402 - Disclosure - Accounts Receivable (Details) Network

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 http://www.huskyenergy.ca/role/AccountsReceivableDetails
590 Term Classification [Table] Table

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 huskf:ReceivablesbytermclassificationTable
591 Maturity [axis] Axis ifrs-full:MaturityAxis
592 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
593 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
594 Document Information [Line Items] LineItems dei:DocumentInformationLineItems
595 2416402 - Disclosure - Inventories (Details) Network

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*

 http://www.huskyenergy.ca/role/InventoriesDetails
596 Implied Table Table

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*

 implied:Table
597 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
598 Crude oil, natural gas and NGL Concept (Monetary) As Of Debit huskf:CurrentCrudeOilNaturalGasandSulphur
599 Refined petroleum products Concept (Monetary) As Of Debit ifrs-full:CurrentPetroleumAndPetrochemicalProducts
600 Trading inventories measured at fair value less costs to sell Concept (Monetary) As Of Debit ifrs-full:InventoriesAtFairValueLessCostsToSell
601 Materials, supplies and other Concept (Monetary) As Of Debit ifrs-full:CurrentRawMaterialsAndCurrentProductionSupplies
602 Inventories Concept (Monetary) As Of Debit ifrs-full:Inventories
603 Inventory write-down to net realizable value (note 6) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossInventories
604 2419401 - Disclosure - Restricted Cash Restricted Cash (Details) Network

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 http://www.huskyenergy.ca/role/RestrictedCashRestrictedCashDetails
605 Disclosure of geographical areas [table] Table

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*

 ifrs-full:DisclosureOfGeographicalAreasTable
606 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
607 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
608 Peoples Republic of China Member huskf:PeoplesRepublicofChinaMember
609 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
610 Restricted cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
611 2422402 - Disclosure - Exploration and Evaluation Costs - Exploration and Evaluation Assets (Details) Network

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 http://www.huskyenergy.ca/role/ExplorationAndEvaluationCostsExplorationAndEvaluationAssetsDetails
612 Disclosure of detailed information about property, plant and equipment [table] Table

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*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
613 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
614 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
615 Tangible exploration and evaluation assets Member ifrs-full:TangibleExplorationAndEvaluationAssetsMember
616 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
617 Property, plant and equipment, beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
618 Additions(1) Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
619 Disposals Concept (Monetary) For Period Credit ifrs-full:DisposalsPropertyPlantAndEquipment
620 Transfers to oil and gas properties (note 9) Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment
621 Expensed exploration expenditures previously capitalized Concept (Monetary) For Period Debit ifrs-full:CashFlowsFromUsedInExplorationForAndEvaluationOfMineralResourcesClassifiedAsOperatingActivities
622 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
623 Property, plant and equipment, ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
624 2422403 - Disclosure - Exploration and Evaluation Costs - Exploration and Evaluation Expense Summary (Details) Network

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*

 http://www.huskyenergy.ca/role/ExplorationAndEvaluationCostsExplorationAndEvaluationExpenseSummaryDetails
625 Implied Table Table

*

*

 implied:Table
626 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
627 Seismic, geological and geophysical Concept (Monetary) For Period Debit huskf:SeismicGeologicalandGeophysicalExpensesArisingFromExplorationandEvaluationofMineralResources
628 Expensed drilling Concept (Monetary) For Period Debit huskf:DrillingExpensesArisingFromExplorationandEvaluationofMineralResources
629 Expensed land Concept (Monetary) For Period Debit huskf:LandExpensesArisingFromExplorationandEvaluationofMineralResources
630 Exploration and evaluation expenses Concept (Monetary) For Period Debit ifrs-full:ExpenseArisingFromExplorationForAndEvaluationOfMineralResources
631 2425402 - Disclosure - Property, Plant and Equipment - Property, Plant and Equipment (Details) Network

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 http://www.huskyenergy.ca/role/PropertyPlantAndEquipmentPropertyPlantAndEquipmentDetails
632 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
633 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
634 Carrying amount [member] Member ifrs-full:CarryingAmountMember
635 Cost Member ifrs-full:GrossCarryingAmountMember
636 Accumulated depletion, depreciation, amortization and impairment Member ifrs-full:AccumulatedDepreciationAmortisationAndImpairmentMember
637 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
638 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
639 Oil and Gas Properties Member ifrs-full:OilAndGasAssetsMember
640 Processing, Transportation and Storage Member huskf:ProcessingTransportationandStorageMember
641 Upgrading Member huskf:UpgradingMember
642 Refining Member huskf:RefiningMember
643 Retail and Other Member huskf:RetailandOtherMember
644 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
645 Reconciliation of changes in property, plant and equipment [abstract] Abstract ifrs-full:ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract
646 Property, plant and equipment, beginning balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
647 Additions(1) Concept (Monetary) For Period Debit ifrs-full:AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment
648 Acquisitions Concept (Monetary) For Period Debit ifrs-full:AcquisitionsThroughBusinessCombinationsPropertyPlantAndEquipment
649 Transfers from exploration and evaluation (note 8) Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughTransfersPropertyPlantAndEquipment
650 Intersegment transfers Concept (Monetary) For Period Debit huskf:IncreaseDecreaseThroughIntersegmentTransfersPropertyPlantandEquipment
651 Changes in asset retirement obligations (note 16) Concept (Monetary) For Period Debit huskf:IncreaseDecreaseThroughDecommissioningRestorationandRehabilitation
652 Disposals and derecognition Concept (Monetary) For Period Credit ifrs-full:DisposalsAndRetirementsPropertyPlantAndEquipment
653 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment
654 Depletion, depreciation, amortization and impairment Concept (Monetary) For Period Credit huskf:DepletionDepreciationAmortizationandImpairmentPlantandEquipment
655 Property, plant and equipment, ending balance Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipment
656 2425403 - Disclosure - Property, Plant and Equipment (Details) Network

*

*

 http://www.huskyenergy.ca/role/PropertyPlantAndEquipmentDetails
657 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
658 Disposals, Property, Plant and Equipment [Axis] Axis huskf:DisposalsPropertyPlantandEquipmentAxis
659 Disposals, Property, Plant and Equipment [Domain] Member huskf:DisposalsPropertyPlantandEquipmentDomain
660 Western Canada Member huskf:WesternCanadaProductionMember
661 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
662 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
663 Superior Refinery [Member] Member huskf:SuperiorRefineryMember
664 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
665 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
666 Undeveloped land Member huskf:UndevelopedLandMember
667 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
668 Impairment loss (reversal of impairment loss) Concept (Monetary) For Period ifrs-full:WritedownsReversalsOfPropertyPlantAndEquipment
669 Income from reimbursements under insurance policies Concept (Monetary) For Period Credit huskf:Insurancerecoveriesforpropertydamagerebuildbusinessinterruptionandcleanupcosts
670 Proceeds on sale of assets Concept (Monetary) For Period Debit ifrs-full:ProceedsFromSalesOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities
671 PPE, not subject to depletion, depreciation and amortization Concept (Monetary) As Of Debit huskf:PropertyPlantandEquipmentNotSubjecttoDepletionDepreciationandAmortization
672 Land Concept (Monetary) As Of Debit ifrs-full:Land
673 Crude oil, facility capacity (bbls/day) Concept (Integer) As Of huskf:CrudeOilBarrelsPerDayFacilityCapacity
674 Gain on sale of assets Concept (Monetary) For Period Credit ifrs-full:GainsOnDisposalsOfPropertyPlantAndEquipment
675 Gain on sale of assets, net of tax Concept (Monetary) For Period Credit huskf:GainsOnDisposalsOfPropertyPlantAndEquipmentNetOfTax
676 Acquisition cash consideration Concept (Monetary) As Of Credit ifrs-full:CashTransferred
677 Revenue from sale of goods Concept (Monetary) For Period Credit ifrs-full:RevenueOfAcquiree
678 Profit (loss) Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfAcquiree
679 Revenue of combined entity as if combination occurred at beginning of period Concept (Monetary) For Period Credit huskf:Revenueofacquireeasifcombinationoccurredatbeginningofperiod
680 Profit (Loss) of acquiree if combination occurred at beginning of period Concept (Monetary) For Period Credit huskf:ProfitLossofacquireeifcombinationoccurredatbeginningofperiod
681 Revenue of combined entity as if combination occurred at beginning of period Concept (Monetary) For Period Credit ifrs-full:RevenueOfCombinedEntity
682 Profit (loss) of combined entity as if combination occurred at beginning of period Concept (Monetary) For Period Credit ifrs-full:ProfitLossOfCombinedEntity
683 2425404 - Disclosure - Property, Plant and Equipment - Assets Under Finance Lease (Details) Network

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*

 http://www.huskyenergy.ca/role/PropertyPlantAndEquipmentAssetsUnderFinanceLeaseDetails
684 Disclosure of detailed information about property, plant and equipment [table] Table

*

*

 ifrs-full:DisclosureOfPropertyPlantAndEquipmentTable
685 Classes of property, plant and equipment [axis] Axis ifrs-full:ClassesOfPropertyPlantAndEquipmentAxis
686 Property, plant and equipment [member] Member ifrs-full:PropertyPlantAndEquipmentMember
687 Refining Member huskf:RefiningMember
688 Oil and Gas Properties Member ifrs-full:OilAndGasAssetsMember
689 Disclosure of detailed information about property, plant and equipment [line items] LineItems ifrs-full:DisclosureOfPropertyPlantAndEquipmentLineItems
690 Assets under finance lease Concept (Monetary) As Of Debit ifrs-full:RecognisedFinanceLeaseAsAssets
691 2425405 - Disclosure - Property, Plant and Equipment - Purchase Price Allocation (Details) (Details) Network

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*

 http://www.huskyenergy.ca/role/PropertyPlantAndEquipmentPurchasePriceAllocationDetailsDetails
692 Disclosure of detailed information about business combination [table] Table

*

*

 ifrs-full:DisclosureOfBusinessCombinationsTable
693 Business combinations [axis] Axis ifrs-full:BusinessCombinationsAxis
694 Entity's total for business combinations [member] Member ifrs-full:EntitysTotalForBusinessCombinationsMember
695 Superior Refinery [Member] Member huskf:SuperiorRefineryMember
696 Disclosure of detailed information about business combination [line items] LineItems ifrs-full:DisclosureOfBusinessCombinationsLineItems
697 Working Capital Concept (Monetary) As Of Debit huskf:WorkingCapital
698 Property, plant and equipment recognised as of acquisition date Concept (Monetary) As Of Debit ifrs-full:PropertyPlantAndEquipmentRecognisedAsOfAcquisitionDate
699 Asset Retirement Obligation Recognized as at Acquisition Date Concept (Monetary) As Of Credit huskf:AssetRetirementObligationRecognizedasatAcquisitionDate
700 Employee Future Benefits Recognized as of Acquisition Date Concept (Monetary) As Of Credit huskf:EmployeeFutureBenefitsRecognizedasofAcquisitionDate
701 Identifiable assets acquired (liabilities assumed) Concept (Monetary) As Of Debit ifrs-full:IdentifiableAssetsAcquiredLiabilitiesAssumed
702 2428402 - Disclosure - Goodwill - Goodwill Rollforward (Details) Network

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*

 http://www.huskyenergy.ca/role/GoodwillGoodwillRollforwardDetails
703 Implied Table Table

*

*

 implied:Table
704 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
705 Goodwill, beginning balance Concept (Monetary) As Of Debit ifrs-full:Goodwill
706 Exchange adjustments Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesGoodwill
707 Goodwill, ending balance Concept (Monetary) As Of Debit ifrs-full:Goodwill
708 2428403 - Disclosure - Goodwill (Details) Network

*

*

 http://www.huskyenergy.ca/role/GoodwillDetails
709 Disclosure of reconciliation of changes in goodwill [table] Table

*

*

 ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillTable
710 Classes of intangible assets and goodwill [axis] Axis ifrs-full:ClassesOfIntangibleAssetsAndGoodwillAxis
711 Intangible assets and goodwill [member] Member ifrs-full:IntangibleAssetsAndGoodwillMember
712 Goodwill Member ifrs-full:GoodwillMember
713 Disclosure of reconciliation of changes in goodwill [line items] LineItems ifrs-full:DisclosureOfReconciliationOfChangesInGoodwillLineItems
714 Discount rate applied to cash flow projections, term Concept (xbrli:durationItemType) For Period huskf:DiscountRateAppliedToCashFlowprojectionsTerm
715 Discount rate (as a percent) Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
716 Discount rate applied to cash flow projections, term, period one Concept (xbrli:durationItemType) For Period huskf:DiscountRateAppliedToCashFlowprojectionsTermPeriodOne
717 Average expected rates of inflation Concept (Percent) For Period huskf:AverageExpectedRatesOfInflation
718 Discount rate applied to cash flow projections, term, period two Concept (xbrli:durationItemType) For Period huskf:DiscountRateAppliedToCashFlowprojectionsTermPeriodTwo
719 2431402 - Disclosure - Joint Arrangements - BP-Husky Refining LLC (Details) Network

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*

 http://www.huskyenergy.ca/role/JointArrangementsBpHuskyRefiningLlcDetails
720 Disclosure of joint operations [table] Table

*

*

 ifrs-full:DisclosureOfJointOperationsTable
721 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
722 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
723 BP-Husky Refining LLC Member huskf:BPHuskyRefiningLLCMember
724 Disclosure of joint operations [line items] LineItems ifrs-full:DisclosureOfJointOperationsLineItems
725 Proportion of ownership interest in joint operation Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointOperation
726 Consideration transferred Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
727 Contribution payable Concept (Monetary) As Of Credit ifrs-full:LiabilitiesIncurred
728 Contribution Payable Abstract huskf:DisclosureofJointOperationsContributionPayableRollForward
729 Paid Concept (Monetary) For Period Credit ifrs-full:OtherCashPaymentsToAcquireEquityOrDebtInstrumentsOfOtherEntitiesClassifiedAsInvestingActivities
730 Distribution from joint operation Concept (Monetary) For Period Debit ifrs-full:DividendsReceivedClassifiedAsOperatingActivities
731 Long-term income taxes receivable Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
732 Rate Of Accretion, Percent Concept (Percent) For Period huskf:RateOfAccretionPercent
733 2431403 - Disclosure - Joint Arrangements - Husky-CNOOC Madura Ltd. (Details) Network

*

*

 http://www.huskyenergy.ca/role/JointArrangementsHuskyCnoocMaduraLtdDetails
734 Disclosure of joint ventures [table] Table

*

*

 ifrs-full:DisclosureOfJointVenturesTable
735 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
736 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
737 Husky-CNOOC Madura Ltd. Member huskf:HuskyCNOOCMaduraLtd.Member
738 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
739 Cash and cash equivalents (note 4) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
740 Consideration transferred Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
741 Share of equity investment (percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
742 Results of Operations Abstract ifrs-full:ProfitLossAbstract
743 Revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
744 Expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
745 Proportionate share of net loss Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
746 Share of equity investment (percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
747 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
748 Balance Sheets Abstract ifrs-full:StatementOfFinancialPositionAbstract
749 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
750 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
751 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
752 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
753 Total Assets Concept (Monetary) As Of Debit ifrs-full:Assets
754 Proportion Of Net Assets In Joint Venture Concept (Percent) For Period huskf:ProportionOfNetAssetsInJointVenture
755 Carrying amount in balance sheet Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
756 Deferred income Concept (Monetary) As Of Credit ifrs-full:DeferredIncome
757 2431404 - Disclosure - Joint Arrangements - Husky Midstream Limited Partnership (Details) Network

*

*

 http://www.huskyenergy.ca/role/JointArrangementsHuskyMidstreamLimitedPartnershipDetails
758 Disclosure of joint ventures [table] Table

*

*

 ifrs-full:DisclosureOfJointVenturesTable
759 Legal Entity [Axis] Axis dei:LegalEntityAxis
760 Entity [Domain] Member dei:EntityDomain
761 Power Assets Holding Ltd. Member huskf:PowerAssetsHoldingLtd.Member
762 Cheung Kong Infrastructure Holdings Ltd. Member huskf:CheungKongInfrastructureHoldingsLtd.Member
763 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
764 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
765 Husky Midstream Limited Partnership Member huskf:HuskyMidstreamLimitedPartnershipMember
766 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
767 Cash and cash equivalents (note 4) Concept (Monetary) As Of Debit ifrs-full:CashAndCashEquivalents
768 Results of Operations Abstract ifrs-full:ProfitLossAbstract
769 Revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
770 Expenses Concept (Monetary) For Period Debit ifrs-full:OperatingExpense
771 Proportionate share of net loss Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
772 Share of equity investment (percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
773 Equity Concept (Monetary) As Of Credit ifrs-full:Equity
774 Balance Sheets Abstract ifrs-full:StatementOfFinancialPositionAbstract
775 Current assets Concept (Monetary) As Of Debit ifrs-full:CurrentAssets
776 Non-current assets Concept (Monetary) As Of Debit ifrs-full:NoncurrentAssets
777 Current liabilities Concept (Monetary) As Of Credit ifrs-full:CurrentLiabilities
778 Non-current liabilities Concept (Monetary) As Of Credit ifrs-full:NoncurrentLiabilities
779 Total Assets Concept (Monetary) As Of Debit ifrs-full:Assets
780 Proportion Of Net Assets In Joint Venture Concept (Percent) For Period huskf:ProportionOfNetAssetsInJointVenture
781 Carrying amount in balance sheet Concept (Monetary) As Of Debit ifrs-full:InvestmentsInJointVenturesAccountedForUsingEquityMethod
782 Cash and cash equivalents Concept (Monetary) As Of Credit ifrs-full:AcquisitiondateFairValueOfTotalConsiderationTransferred
783 2431405 - Disclosure - Joint Arrangements - Sunrise Oil Sands Partnership (Details) Network

*

*

 http://www.huskyenergy.ca/role/JointArrangementsSunriseOilSandsPartnershipDetails
784 Disclosure of joint ventures [table] Table

*

*

 ifrs-full:DisclosureOfJointVenturesTable
785 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
786 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
787 Sunrise Oil Sands Partnership Member huskf:SunriseOilSandsPartnershipMember
788 Disclosure of joint ventures [line items] LineItems ifrs-full:DisclosureOfJointVenturesLineItems
789 Proportion of ownership interest in joint operation Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointOperation
790 2434402 - Disclosure - Other Assets (Details) Network

*

*

 http://www.huskyenergy.ca/role/OtherAssetsDetails
791 Term Classification [Table] Table

*

*

 huskf:ReceivablesbytermclassificationTable
792 Term Classification [Axis] Axis huskf:TermClassificationAxis
793 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
794 Later than one year Member ifrs-full:LaterThanOneYearMember
795 Term Classification [Line Items] LineItems huskf:TermClassificationLineItems
796 2437401 - Disclosure - Bank Operating Loans (Details) Network

*

*

 http://www.huskyenergy.ca/role/BankOperatingLoansDetails
797 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
798 Legal Entity [Axis] Axis dei:LegalEntityAxis
799 Entity [Domain] Member dei:EntityDomain
800 Husky Energy Inc. Member huskf:HuskyEnergyInc.Member
801 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
802 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
803 Sunrise Oil Sands Partnership Member huskf:SunriseOilSandsPartnershipMember
804 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
805 Carrying amount [member] Member ifrs-full:CarryingAmountMember
806 Cost Member ifrs-full:GrossCarryingAmountMember
807 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
808 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
809 Bank operating loan Member huskf:BankOperatingLoanMember
810 Unsecured demand credit facility Member huskf:UnsecuredDemandCreditFacilityMember
811 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
812 Line of credit, maximum borrowing capacity Concept (Monetary) As Of Credit huskf:LineOfCreditFacilityMaximumBorrowingCapacity1
813 Letter of credit, maximum borrowing capacity Concept (Monetary) As Of Credit huskf:LetterofCreditMaximumBorrowingCapacity
814 Line of credit, letter of credit Concept (Monetary) As Of Credit huskf:LineOfCreditOutstanding
815 Unsecured bank loans received Concept (Monetary) As Of Credit ifrs-full:Borrowings
816 Letter of credit, demand facility, maximum borrowing capacity Concept (Monetary) As Of Credit huskf:LetterofCreditDemandFacilityMaximumBorrowingCapacity
817 2440402 - Disclosure - Accounts Payable and Accrued Liabilities (Details) Network

*

*

 http://www.huskyenergy.ca/role/AccountsPayableAndAccruedLiabilitiesDetails
818 Implied Table Table

*

*

 implied:Table
819 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
820 Trade payables Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayablesToTradeSuppliers
821 Accrued liabilities Concept (Monetary) As Of Credit ifrs-full:AccrualsClassifiedAsCurrent
822 Dividend payable (note 19) Concept (Monetary) As Of Credit ifrs-full:CurrentDividendPayables
823 Stock-based compensation Concept (Monetary) As Of Credit huskf:LiabilitiesFromShareBasedPaymentTransactionsCurrent
824 Derivatives due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentDerivativeFinancialLiabilities
825 Other Concept (Monetary) As Of Credit ifrs-full:OtherCurrentLiabilities
826 Accounts payable and accrued liabilities Concept (Monetary) As Of Credit ifrs-full:TradeAndOtherCurrentPayables
827 2443402 - Disclosure - Debt and Credit Facilities - Short-term Debt (Details) Network

*

*

 http://www.huskyenergy.ca/role/DebtAndCreditFacilitiesShortTermDebtDetails
828 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
829 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
830 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
831 Commercial paper Member huskf:BorrowingCommercialPaperMember
832 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
833 Interest rate, weighted average Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
834 2443403 - Disclosure - Debt and Credit Facilities - Long-term Debt (Details) Network

*

*

 http://www.huskyenergy.ca/role/DebtAndCreditFacilitiesLongTermDebtDetails
835 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
836 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
837 Carrying amount [member] Member ifrs-full:CarryingAmountMember
838 Cost Member ifrs-full:GrossCarryingAmountMember
839 Deferred financing costs Member huskf:DeferredFinancingCostsMember
840 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
841 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
842 6.15% Notes Due 2019 Member huskf:SixPointOneFivePercentNotesDue2019Member
843 7.25% Notes Due 2019 Member huskf:SevenPointTwoFivePercentNotesDue2019Member
844 5.00% Notes Due 2020 Member huskf:FivePointZeroPercentNotesDue2020Member
845 3.95% Notes Due 2022 Member huskf:ThreePointNineFivePercentNotesDue2022Member
846 4.00 Notes Due 2024 Member huskf:FourPointZeroPercentNotesDue2024Member
847 3.55% Notes Due 2025 Member huskf:ThreePointFiveFivePercentNotesDue2025Member
848 3.60% Notes Due 2027 Member huskf:ThreePointSixZeroPercentNotesDue2027Member
849 6.80% Notes Due 2037 Member huskf:SixPointEightZeroPercentNotesDue2037Member
850 Unwound interest rate swaps Member huskf:UnwoundInterestRateSwapsMember
851 6.20% Notes Due 2017 Member huskf:SixPointTwoZeroPercentNotesDue2017Member
852 Non-current debt due within one year [Member] Member huskf:NoncurrentdebtduewithinoneyearMember
853 Long-term debt Member huskf:NonCurrentDebtMember
854 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
855 Long-term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
856 Long-term debt due within one year Concept (Monetary) As Of Credit ifrs-full:CurrentPortionOfLongtermBorrowings
857 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
858 Long-term debt repayment Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
859 Debt issuance Concept (Monetary) As Of Credit ifrs-full:DebtSecurities
860 2443404 - Disclosure - Debt and Credit Facilities - Credit Facilities (Details) Network

*

*

 http://www.huskyenergy.ca/role/DebtAndCreditFacilitiesCreditFacilitiesDetails
861 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
862 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
863 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
864 Revolving syndicated credit facility, March 9, 2020 Member huskf:RevolvingSyndicatedCreditFacilityMarch92020Member
865 Revolving syndicated credit facility, June 19, 2022 Member huskf:RevolvingSyndicatedCreditFacilityJune192022Member
866 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
867 Borrowings, maximum borrowing capacity Concept (Monetary) As Of Credit huskf:LineOfCreditFacilityMaximumBorrowingCapacity1
868 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
869 2443405 - Disclosure - Debt and Credit Facilities - Notes (Details) Network

*

*

 http://www.huskyenergy.ca/role/DebtAndCreditFacilitiesNotesDetails
870 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
871 Capital Commitments [Axis] Axis huskf:CapitalCommitmentsAxis
872 Capital Commitments [Domain] Member huskf:CapitalCommitmentsDomain
873 2017 Canadian Shelf Prospectus Member huskf:A2017CanadianShelfProspectusMember
874 2018 U.S Shelf Prospectus Member huskf:A2018U.SShelfProspectusMember
875 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
876 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
877 3.60% Notes Due 2027 Member huskf:ThreePointSixZeroPercentNotesDueMarch102027Member
878 6.20% Notes Due 2017 Member huskf:SixPointTwoZeroPercentNotesDue2017Member
879 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
880 Hedged item, liabilities Concept (Monetary) As Of Credit ifrs-full:HedgedItemLiabilities
881 Interest rate Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
882 Long-term debt repayment Concept (Monetary) For Period Credit ifrs-full:RepaymentsOfNoncurrentBorrowings
883 Debt repayment, interest Concept (Monetary) For Period Debit ifrs-full:InterestExpenseOnDebtInstrumentsIssued
884 Authorized capital commitments Concept (Monetary) As Of Credit ifrs-full:AuthorisedCapitalCommitmentsButNotContractedFor
885 Borrowings Concept (Monetary) As Of Credit ifrs-full:Borrowings
886 Authorised capital commitments, pre-registration Concept (Monetary) As Of Credit huskf:AuthorisedCapitalCommitmentsPreRegistration
887 2443406 - Disclosure - Debt and Credit Facilities - Reconciliation of Changes of Liabilities to Cash Flows from Financing Activities (Details) Network

*

*

 http://www.huskyenergy.ca/role/DebtAndCreditFacilitiesReconciliationOfChangesOfLiabilitiesToCashFlowsFromFinancingActivitiesDetails
888 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
889 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
890 Carrying amount [member] Member ifrs-full:CarryingAmountMember
891 Cost Member ifrs-full:GrossCarryingAmountMember
892 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
893 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
894 Short-term borrowings [member] Member ifrs-full:ShorttermBorrowingsMember
895 Non-current debt due within one year [Member] Member huskf:NoncurrentdebtduewithinoneyearMember
896 Long-term debt Member huskf:NonCurrentDebtMember
897 Other long-term liabilities [Member] Member huskf:OtherlongtermliabilitiesMember
898 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
899 2446402 - Disclosure - Asset Retirement Obligations - Carrying amount of ARO (Details) Network

*

*

 http://www.huskyenergy.ca/role/AssetRetirementObligationsCarryingAmountOfAroDetails
900 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
901 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
902 Other provisions [member] Member ifrs-full:OtherProvisionsMember
903 Asset Retirement Obligations Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
904 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
905 Asset Retirement Obligation, Beginning balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
906 Additions Concept (Monetary) For Period Credit ifrs-full:AdditionalProvisionsOtherProvisions
907 Liabilities settled Concept (Monetary) For Period Debit ifrs-full:ProvisionUsedOtherProvisions
908 Liabilities disposed Concept (Monetary) For Period Debit ifrs-full:UnusedProvisionReversedOtherProvisions
909 Change in discount rate Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangeInDiscountRateOtherProvisions
910 Change in estimates Concept (Monetary) For Period Credit huskf:IncreaseDecreaseThroughChangeInEstimateOtherProvisions
911 Exchange adjustment Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughNetExchangeDifferencesOtherProvisions
912 Accretion (note 21) Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughTimeValueOfMoneyAdjustmentOtherProvisions
913 Asset Retirement Obligation, Ending balance Concept (Monetary) As Of Credit ifrs-full:OtherProvisions
914 Asset Retirement Obligations, Expected to be incurred within 1 year Concept (Monetary) As Of Credit ifrs-full:ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts
915 Asset Retirement Obligations, Expected to be incurred beyond 1 year Concept (Monetary) As Of Credit ifrs-full:LongtermProvisionForDecommissioningRestorationAndRehabilitationCosts
916 2446403 - Disclosure - Asset Retirement Obligations - Narrative (Details) Network

*

*

 http://www.huskyenergy.ca/role/AssetRetirementObligationsNarrativeDetails
917 Disclosure of other provisions [table] Table

*

*

 ifrs-full:DisclosureOfOtherProvisionsTable
918 Range [axis] Axis ifrs-full:RangeAxis
919 Ranges [member] Member ifrs-full:RangesMember
920 Minimum Member ifrs-full:BottomOfRangeMember
921 Maximum Member ifrs-full:TopOfRangeMember
922 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
923 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
924 Peoples Republic of China Member huskf:PeoplesRepublicofChinaMember
925 Classes of other provisions [axis] Axis ifrs-full:ClassesOfProvisionsAxis
926 Other provisions [member] Member ifrs-full:OtherProvisionsMember
927 Asset Retirement Obligations Member ifrs-full:ProvisionForDecommissioningRestorationAndRehabilitationCostsMember
928 Disclosure of other provisions [line items] LineItems ifrs-full:DisclosureOfOtherProvisionsLineItems
929 Undiscounted inflation-adjusted ARO Concept (Monetary) As Of Credit ifrs-full:NonderivativeFinancialLiabilitiesUndiscountedCashFlows
930 Expected timing Concept (xbrli:durationItemType) For Period huskf:ExpectedTimingOtherProvisions
931 Discount rate, adjusted risk-free rate (as a percent) Concept (Percent) As Of ifrs-full:DescriptionOfDiscountRatesAppliedToCashFlowProjections
932 Average expected rates of inflation Concept (Percent) For Period huskf:AverageExpectedRatesOfInflation
933 Restricted cash and cash equivalents Concept (Monetary) As Of Debit ifrs-full:RestrictedCashAndCashEquivalents
934 Restricted cash (notes 7, 16) Concept (Monetary) As Of Debit ifrs-full:CurrentRestrictedCashAndCashEquivalents
935 Restricted cash (notes 7, 16) Concept (Monetary) As Of Debit ifrs-full:NoncurrentRestrictedCashAndCashEquivalents
936 2449402 - Disclosure - Other Long-term Liabilities - Other Long-Term Liabilities (Details) Network

*

*

 http://www.huskyenergy.ca/role/OtherLongTermLiabilitiesOtherLongTermLiabilitiesDetails
937 Implied Table Table

*

*

 implied:Table
938 Subclassifications of assets, liabilities and equities [abstract] Abstract ifrs-full:SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
939 Employee future benefits (note 22) Concept (Monetary) As Of Credit ifrs-full:NoncurrentProvisionsForEmployeeBenefits
940 Finance lease obligations Concept (Monetary) As Of Credit ifrs-full:NoncurrentFinanceLeaseLiabilities
941 Stock-based compensation Concept (Monetary) As Of Credit huskf:NonCurrentLiabilitiesFromSharebasedPaymentTransactions
942 Deferred revenue Concept (Monetary) As Of Credit ifrs-full:DeferredIncomeClassifiedAsNoncurrent
943 Leasehold incentives Concept (Monetary) As Of Credit ifrs-full:NoncurrentLeaseLiabilities
944 Other Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentLiabilities
945 Other non-current financial liabilities Concept (Monetary) As Of Credit ifrs-full:OtherNoncurrentFinancialLiabilities
946 2449404 - Disclosure - Other Long-term Liabilities - Future Minimum Lease Payments (Details) Network

*

*

 http://www.huskyenergy.ca/role/OtherLongTermLiabilitiesFutureMinimumLeasePaymentsDetails
947 Disclosure of finance lease and operating lease by lessee [table] Table

*

*

 ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeTable
948 Maturity [axis] Axis ifrs-full:MaturityAxis
949 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
950 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
951 After 1 year but no more than 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
952 More than 5 years Member ifrs-full:LaterThanFiveYearsMember
953 Disclosure of finance lease and operating lease by lessee [line items] LineItems ifrs-full:DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeLineItems
954 Future minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayable
955 Interest Concept (Monetary) As Of Credit huskf:MinimumFinanceLeaseInterestPaymentsPayable
956 Present value of minimum lease payments Concept (Monetary) As Of Credit ifrs-full:MinimumFinanceLeasePaymentsPayableAtPresentValue
957 2449405 - Disclosure - Other Long-term Liabilities - Deferred Revenue (Details) Network

*

*

 http://www.huskyenergy.ca/role/OtherLongTermLiabilitiesDeferredRevenueDetails
958 Schedule of Deferred Revenue [Table] Table

*

*

 huskf:ScheduleofDeferredRevenueTable
959 Change in Deferred Revenue Liability [Axis] Axis huskf:ChangeinDeferredRevenueLiabilityAxis
960 Change in Deferred Revenue Liability [Domain] Member huskf:ChangeinDeferredRevenueLiabilityDomain
961 Take-or-pay payments received [Domain] Member huskf:TakeorpaypaymentsreceivedMember
962 Schedule of Deferred Revenue [Line Items] LineItems huskf:ScheduleofDeferredRevenueLineItems
963 2452402 - Disclosure - Income Taxes - Income Tax Expense (Details) Network

*

*

 http://www.huskyenergy.ca/role/IncomeTaxesIncomeTaxExpenseDetails
964 Implied Table Table

*

*

 implied:Table
965 Disclosure of income tax [Abstract] Abstract huskf:DisclosureofincometaxAbstract
966 Current income tax charge Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncome
967 Adjustments to current income tax estimates Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForCurrentTaxOfPriorPeriod
968 Provisions for (recovery of) income taxes. current Concept (Monetary) For Period Debit ifrs-full:CurrentTaxExpenseIncomeAndAdjustmentsForCurrentTaxOfPriorPeriods
969 Relating to origination and reversal of temporary differences Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncomeRelatingToOriginationAndReversalOfTemporaryDifferences
970 Adjustments to deferred income tax estimates Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseArisingFromWritedownOrReversalOfWritedownOfDeferredTaxAsset
971 Provisions for (recovery of) income taxes, deferred Concept (Monetary) For Period Debit ifrs-full:DeferredTaxExpenseIncome
972 2452403 - Disclosure - Income Taxes - Deferred Tax Items in OCI (Details) Network

*

*

 http://www.huskyenergy.ca/role/IncomeTaxesDeferredTaxItemsInOciDetails
973 Implied Table Table

*

*

 implied:Table
974 Disclosure of income tax [Abstract] Abstract huskf:DisclosureofincometaxAbstract
975 Income tax relating to components of other comprehensive income [abstract] Abstract ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeAbstract
976 Derivatives designated as cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
977 Remeasurement of pension plans Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
978 Exchange differences on translation of foreign operations Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToExchangeDifferencesOnTranslationOfOtherComprehensiveIncome
979 Hedge of net investment Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToHedgesOfNetInvestmentsInForeignOperationsOfOtherComprehensiveIncome
980 Income tax relating to components of other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
981 2452404 - Disclosure - Income Taxes - Reconciliation of Effective Tax Rate (Details) Network

*

*

 http://www.huskyenergy.ca/role/IncomeTaxesReconciliationOfEffectiveTaxRateDetails
982 Disclosure of geographical areas [table] Table

*

*

 ifrs-full:DisclosureOfGeographicalAreasTable
983 Non-adjusting events after reporting period [axis] Axis ifrs-full:NonadjustingEventsAfterReportingPeriodAxis
984 Non-adjusting events after reporting period [member] Member ifrs-full:NonadjustingEventsMember
985 Changes in tax rates or tax laws enacted or announced Member ifrs-full:ChangesInTaxRatesOrTaxLawsEnactedOrAnnouncedMember
986 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
987 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
988 Canada Member country:CA
989 United States Member country:US
990 Other foreign jurisdictions Member ifrs-full:ForeignCountriesMember
991 Disclosure of geographical areas [line items] LineItems ifrs-full:DisclosureOfGeographicalAreasLineItems
992 Average effective tax rate Concept (Percent) For Period ifrs-full:AverageEffectiveTaxRate
993 Applicable tax rate Concept (Percent) For Period ifrs-full:ApplicableTaxRate
994 Reconciliation of Effective Tax Rate Abstract ifrs-full:ReconciliationOfAccountingProfitMultipliedByApplicableTaxRatesAbstract
995 Earnings before income taxes Concept (Monetary) For Period Credit ifrs-full:ProfitLossBeforeTax
996 Expected income tax Concept (Monetary) For Period Debit ifrs-full:TaxExpenseIncomeAtApplicableTaxRate
997 Foreign jurisdictions Concept (Monetary) For Period Debit ifrs-full:TaxEffectOfForeignTaxRates
998 Non-taxable items Concept (Monetary) For Period Credit ifrs-full:TaxEffectOfRevenuesExemptFromTaxation2011
999 Adjustments with respect to previous year Concept (Monetary) For Period Debit ifrs-full:TaxEffectFromChangeInTaxRate
1000 Revaluation of foreign tax pools Concept (Monetary) For Period Debit huskf:TaxEffectOfRevaluationOfForeignTax
1001 Other – net Concept (Monetary) For Period Debit ifrs-full:OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome
1002 Provisions for (recovery of) income taxes Concept (Monetary) For Period Debit ifrs-full:IncomeTaxExpenseContinuingOperations
1003 Deferred income tax recovery Concept (Monetary) For Period Debit huskf:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetandLiabilityProvisionalIncomeTaxExpense
1004 2452405 - Disclosure - Income Taxes - Deferred Tax Liabilities and Assets (Details) Network

*

*

 http://www.huskyenergy.ca/role/IncomeTaxesDeferredTaxLiabilitiesAndAssetsDetails
1005 Disclosure of temporary difference, unused tax losses and unused tax credits [table] Table

*

*

 ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsTable
1006 Temporary difference, unused tax losses and unused tax credits [axis] Axis ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis
1007 Temporary difference, unused tax losses and unused tax credits [member] Member ifrs-full:TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember
1008 Exploration and evaluation assets and property, plant and equipment Member huskf:ExplorationAndEvaluationAssetsAndPropertyPlantAndEquipmentRelatedTemporaryDifferencesMember
1009 Foreign exchange gains taxable on realization Member ifrs-full:UnrealisedForeignExchangeGainsLossesMember
1010 Debt issue costs Member huskf:DebtIssueCostsRelatedTemporaryDifferencesMember
1011 Other temporary differences Member ifrs-full:OtherTemporaryDifferencesMember
1012 Pension plans Member huskf:PensionPlansRelatedTemporaryDifferencesMember
1013 Asset retirement obligations Member huskf:DecommissioningRestorationAndRehabilitationCostsRelatedTemporaryDifferencesMember
1014 Loss carry-forwards Member ifrs-full:UnusedTaxLossesMember
1015 Financial assets at fair value Member huskf:FinancialAssetsAtFairValueRelatedTemporaryDifferencesMember
1016 Foreign subsidiaries, branches and interest in join ventures Member huskf:ForeignSubsidiariesBranchesAndInterestInJoinVenturesMember
1017 Unused tax losses, expire between 2030 and 2037 Member huskf:UnusedTaxLossesExpireBetween2030and2037Member
1018 Disclosure of temporary difference, unused tax losses and unused tax credits [line items] LineItems ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsLineItems
1019 Deferred tax liabilities Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilities
1020 Deferred tax assets Concept (Monetary) As Of Debit ifrs-full:DeferredTaxAssets
1021 Deferred tax liability Concept (Monetary) As Of Credit ifrs-full:DeferredTaxLiabilityAsset
1022 Deferred income taxes Concept (Monetary) For Period ifrs-full:DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
1023 Income tax relating to components of other comprehensive income Concept (Monetary) For Period ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome
1024 Increase (decrease) other differences deferred tax liability (asset) Concept (Monetary) For Period Debit huskf:IncreaseDecreaseOtherDifferencesDeferredTaxLiabilityAsset
1025 2455402 - Disclosure - Share Capital - Common Shares (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalCommonSharesDetails
1026 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1027 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1028 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1029 Ordinary shares [member] Member ifrs-full:OrdinarySharesMember
1030 Preference shares [member] Member ifrs-full:PreferenceSharesMember
1031 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1032 Equity, beginning, shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1033 Shares cancellation (in shares) Concept (Shares) For Period huskf:EquitySharesCanceled
1034 Number of share options exercised (in options) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1035 Equity, ending, shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1036 Issued capital, beginning balance (in shares) Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1037 Share cancellation Concept (Monetary) For Period Credit ifrs-full:CancellationOfTreasuryShares
1038 Share additions (note 19) Concept (Monetary) For Period Credit ifrs-full:SaleOrIssueOfTreasuryShares
1039 Issued capital, ending balance (in shares) Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1040 Dividend payables (in CAD per share) Concept (Monetary) As Of Credit ifrs-full:DividendPayables
1041 Common share dividends declared (in CAD per share) Concept (Share) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwnersPerShare
1042 Dividends declared on common shares Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
1043 Dividends recognised as distributions to owners Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
1044 2455403 - Disclosure - Share Capital - Preferred Shares (Details) Network

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*

 http://www.huskyenergy.ca/role/ShareCapitalPreferredSharesDetails
1045 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1046 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1047 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1048 Preference shares [member] Member ifrs-full:PreferenceSharesMember
1049 Series Of Share Capital Shares [Axis] Axis huskf:SeriesOfShareCapitalSharesAxis
1050 Series Of Share Capital Shares [Domain] Member huskf:SeriesOfShareCapitalSharesDomain
1051 Series 1 Preferred Shares Member huskf:Series1PreferredSharesMember
1052 Series 2 Preferred Shares Member huskf:Series2PreferredSharesMember
1053 Series 3 Preferred Shares Member huskf:Series3PreferredSharesMember
1054 Series 5 Preferred Shares Member huskf:Series5PreferredSharesMember
1055 Series 7 Preferred Shares Member huskf:Series7PreferredSharesMember
1056 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1057 Equity, shares Concept (Shares) As Of ifrs-full:NumberOfSharesOutstanding
1058 Issued capital, beginning balance (in shares) Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1059 Issued capital, ending balance (in shares) Concept (Monetary) As Of Credit ifrs-full:IssuedCapital
1060 2455404 - Disclosure - Share Capital - Preferred Shares Textual (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalPreferredSharesTextualDetails
1061 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1062 Debt Instrument [Axis] Axis huskf:DebtInstrument1Axis
1063 Debt Instrument1 [Domain] Member huskf:DebtInstrument1Domain
1064 Government of Canada Bond Member huskf:GovernmentofCanadaBondMember
1065 90-day Government of Canada Treasury Bills Member huskf:A90DayGovernmentofCanadaTreasuryBillsMember
1066 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1067 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1068 Preference shares [member] Member ifrs-full:PreferenceSharesMember
1069 Redeemable preferred shares, series 1 preferred shares Member huskf:RedeemablePreferredSharesSeries1PreferredSharesMember
1070 Redeemable preferred shares, series 2 preferred shares Member huskf:RedeemablePreferredSharesSeries2PreferredSharesMember
1071 Redeemable preferred shares, series 3 preferred shares Member huskf:RedeemablePreferredSharesSeries3PreferredSharesMember
1072 Redeemable preferred shares, series 4 preferred shares Member huskf:RedeemablePreferredSharesSeries4PreferredSharesMember
1073 Redeemable preferred shares, series 5 preferred shares Member huskf:RedeemablePreferredSharesSeries5PreferredSharesMember
1074 Redeemable preferred shares, series 6 preferred shares Member huskf:RedeemablePreferredSharesSeries6PreferredSharesMember
1075 Redeemable preferred shares, series 7 preferred shares Member huskf:RedeemablePreferredSharesSeries7PreferredSharesMember
1076 Redeemable preferred shares, series 8 preferred shares Member huskf:RedeemablePreferredSharesSeries8PreferredSharesMember
1077 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1078 Dividend payables Concept (Monetary) As Of Credit ifrs-full:DividendPayables
1079 Dividend yield, quarterly Concept (Percent) For Period huskf:PreferredStockDividendRatePercentageQuarterly
1080 Dividend yield, term Concept (xbrli:durationItemType) For Period huskf:DividendYieldTerm
1081 Dividend yield, term two Concept (xbrli:durationItemType) For Period huskf:DividendYieldTermTwo
1082 Dividend rate, basis spread on variable rate Concept (Percent) As Of huskf:DividendRateBasisSpreadOnVariableRate
1083 Debt instrument, term Concept (xbrli:durationItemType) For Period huskf:DebtInstrumentTerm1
1084 Conversion conditions, term Concept (xbrli:durationItemType) For Period huskf:RedeemablePreferredSharesConversionConditionsTerm
1085 2455405 - Disclosure - Share Capital - Redeemable Preferred Shares Dividends (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalRedeemablePreferredSharesDividendsDetails
1086 Disclosure of classes of share capital [table] Table

*

*

 ifrs-full:DisclosureOfClassesOfShareCapitalTable
1087 Classes of share capital [axis] Axis ifrs-full:ClassesOfShareCapitalAxis
1088 Share capital [member] Member ifrs-full:ClassesOfShareCapitalMember
1089 Preference shares [member] Member ifrs-full:PreferenceSharesMember
1090 Series Of Share Capital Shares [Axis] Axis huskf:SeriesOfShareCapitalSharesAxis
1091 Series Of Share Capital Shares [Domain] Member huskf:SeriesOfShareCapitalSharesDomain
1092 Series 1 Preferred Shares Member huskf:Series1PreferredSharesMember
1093 Series 2 Preferred Shares Member huskf:Series2PreferredSharesMember
1094 Series 3 Preferred Shares Member huskf:Series3PreferredSharesMember
1095 Series 5 Preferred Shares Member huskf:Series5PreferredSharesMember
1096 Series 7 Preferred Shares Member huskf:Series7PreferredSharesMember
1097 Disclosure of classes of share capital [line items] LineItems ifrs-full:DisclosureOfClassesOfShareCapitalLineItems
1098 Dividends declared on preferred shares Concept (Monetary) For Period ifrs-full:DividendsProposedOrDeclaredBeforeFinancialStatementsAuthorisedForIssueButNotRecognisedAsDistributionToOwners
1099 Dividends recognised as distributions to owners Concept (Monetary) For Period Debit ifrs-full:DividendsPaid
1100 2455406 - Disclosure - Share Capital - Stock Option Plan (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalStockOptionPlanDetails
1101 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1102 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1103 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1104 Stock Option Plan Member huskf:StockOptionPlanMember
1105 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1106 Share option, term Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1107 Liabilities from share-based payment transactions Concept (Monetary) As Of Credit ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
1108 Stock based compensation expense Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1109 Stock option exercisable, intrinsic value Concept (Monetary) As Of Credit ifrs-full:IntrinsicValueOfLiabilitiesFromSharebasedPaymentTransactionsForWhichCounterpartysRightToCashOrOtherAssetsVested2011
1110 Weighted average fair value (in CAD per option) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1111 2455407 - Disclosure - Share Capital - Outstanding and Exercisable Options (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalOutstandingAndExercisableOptionsDetails
1112 Implied Table Table

*

*

 implied:Table
1113 Disclosure of share capital, reserves and other equity interest [Abstract] Abstract huskf:DisclosureofsharecapitalreservesandotherequityinterestAbstract
1114 Number of stock options outstanding, beginning of year (in options) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1115 Number of stock options granted (in options) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsGrantedInSharebasedPaymentArrangement
1116 Number of share options exercised in share-based payment arrangement (in options) Concept (Decimal) For Period ifrs-full:NumberOfShareOptionsExercisedInSharebasedPaymentArrangement
1117 Number of share options surrendered for cash (in options) Concept (Decimal) For Period huskf:NumberOfShareOptionsExercisedInSharebasedPaymentForCashPayment
1118 Number of stock options expired or forfeited (in options) Concept (Decimal) For Period huskf:NumberOfShareOptionsExpiredAndForfeitedInSharebasedPaymentArrangement
1119 Number of stock options outstanding, end of year (in options) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1120 Number of stock options exercisable, end of year (in options) Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
1121 Weighted average exercise price of stock options outstanding, beginning of year (in cad per option) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1122 Weighted average exercise price of stock options granted (in cad per option) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsGrantedInSharebasedPaymentArrangement
1123 Weighted average exercise price of share options exercised in share-based payment arrangement (in cad per option) Concept (Monetary) For Period ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentArrangement
1124 Weighted average exercise price of share options surrendered for cash (in cad per option) Concept (Monetary) For Period Debit huskf:WeightedAverageExercisePriceOfShareOptionsExercisedInSharebasedPaymentForCashPayment
1125 Weighted average exercise price of stock options expired/forfeited (in cad per option) Concept (Monetary) For Period Debit huskf:WeightedAverageExercisePriceOfShareOptionsExpiredAndForfeitedInShareBasedPaymentArrangement
1126 Weighted average exercise price of stock options outstanding, end of year (in cad per option) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1127 Weighted average exercise price of options exercisable (in cad per option) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
1128 Weighted average fair value (in CAD per option) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1129 2455408 - Disclosure - Share Capital - Outstanding and Exercisable Options-Range of Exercise Prices (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalOutstandingAndExercisableOptionsRangeOfExercisePricesDetails
1130 Disclosure of range of exercise prices of outstanding share options [table] Table

*

*

 ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsTable
1131 Ranges of exercise prices for outstanding share options [axis] Axis ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsAxis
1132 Ranges of exercise prices for outstanding share options [member] Member ifrs-full:RangesOfExercisePricesForOutstandingShareOptionsMember
1133 $14.20 - $29.99 Member huskf:ExercisePriceRangeOneMember
1134 $30.00 - $36.20 Member huskf:ExercisePriceRangeTwoMember
1135 Range [axis] Axis ifrs-full:RangeAxis
1136 Ranges [member] Member ifrs-full:RangesMember
1137 Minimum Member ifrs-full:BottomOfRangeMember
1138 Maximum Member ifrs-full:TopOfRangeMember
1139 Disclosure of range of exercise prices of outstanding share options [line items] LineItems ifrs-full:DisclosureOfRangeOfExercisePricesOfOutstandingShareOptionsLineItems
1140 Exercise price of options (in CAD per option) Concept (Monetary) As Of ifrs-full:ExercisePriceOfOutstandingShareOptions
1141 Number of options outstanding (in options) Concept (Decimal) As Of ifrs-full:NumberOfOutstandingShareOptions
1142 Weighted average exercise price of stock options outstanding (in cad per option) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsOutstandingInSharebasedPaymentArrangement
1143 Weighted average remaining contractual life of options outstanding (in years) Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
1144 Number of stock options exercisable (in options) Concept (Decimal) As Of ifrs-full:NumberOfShareOptionsExercisableInSharebasedPaymentArrangement
1145 Weighted average exercise price of options exercisable (in cad per option) Concept (Monetary) As Of ifrs-full:WeightedAverageExercisePriceOfShareOptionsExercisableInSharebasedPaymentArrangement
1146 2455409 - Disclosure - Share Capital - Fair Value (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalFairValueDetails
1147 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1148 Range [axis] Axis ifrs-full:RangeAxis
1149 Ranges [member] Member ifrs-full:RangesMember
1150 Minimum Member ifrs-full:BottomOfRangeMember
1151 Maximum Member ifrs-full:TopOfRangeMember
1152 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1153 Dividend per option Concept (Monetary) For Period ifrs-full:ExpectedDividendShareOptionsGranted
1154 Range of expected volatilities used (percent) Concept (Percent) For Period ifrs-full:DescriptionOfExpectedVolatilityShareOptionsGranted
1155 Range of risk-free interest rates used (percent) Concept (Percent) For Period ifrs-full:DescriptionOfRiskFreeInterestRateShareOptionsGranted
1156 Expected life of share options from vesting date (years) Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1157 Expected forfeiture rate (percent) Concept (Percent) For Period huskf:ExpectedForfeitureAsPercentageShareOptionsGranted
1158 Weighted average exercise price (in CAD per option) Concept (Monetary) For Period ifrs-full:WeightedAverageSharePriceShareOptionsGranted
1159 Weighted average fair value (in CAD per option) Concept (Monetary) As Of Credit ifrs-full:WeightedAverageFairValueAtMeasurementDateShareOptionsGranted
1160 2455410 - Disclosure - Share Capital - Performance Share Units (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalPerformanceShareUnitsDetails
1161 Disclosure of terms and conditions of share-based payment arrangement [table] Table

*

*

 ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementTable
1162 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1163 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1164 Performance Share Units (PSUs) Member huskf:PerformanceShareUnitsPSUsMember
1165 Disclosure of terms and conditions of share-based payment arrangement [line items] LineItems ifrs-full:DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
1166 Share option, term Concept (Decimal) For Period ifrs-full:DescriptionOfOptionLifeShareOptionsGranted
1167 Liabilities from share-based payment transactions Concept (Monetary) As Of Credit ifrs-full:LiabilitiesFromSharebasedPaymentTransactions2011
1168 Share-based compensation expense Concept (Monetary) For Period Debit ifrs-full:ExpenseFromCashsettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
1169 Payment for performance share units which vested in the year Concept (Monetary) For Period Credit huskf:PaymentForShareBasedPaymentTransactionsForWhichCounterpartysRightToCashOrOtherAssetsVested
1170 Weighted average remaining contractual life of options outstanding (in years) Concept (Decimal) As Of ifrs-full:WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
1171 Performance Share Units, Beginning balance (in units) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1172 Performance Share Units, Granted (in units) Concept (Decimal) For Period ifrs-full:NumberOfInstrumentsOtherEquityInstrumentsGranted
1173 Performance Share Units, Exercised (in units) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsExercisedOrVestedInSharebasedPaymentArrangement
1174 Performance Share Units, Forfeited (in units) Concept (Decimal) For Period ifrs-full:NumberOfOtherEquityInstrumentsForfeitedInSharebasedPaymentArrangement
1175 Performance Share Units, Ending balance (in units) Concept (Decimal) As Of ifrs-full:NumberOfOtherEquityInstrumentsOutstandingInSharebasedPaymentArrangement
1176 Performance Share Units, Vested (in units) Concept (Decimal) As Of huskf:NumberOfOtherEquityInstrumentsVestedInShareBasedPaymentArrangement
1177 2455411 - Disclosure - Share Capital - Earnings Per Share (Details) Network

*

*

 http://www.huskyenergy.ca/role/ShareCapitalEarningsPerShareDetails
1178 Earnings per share [table] Table

*

*

 ifrs-full:EarningsPerShareTable
1179 Types of share-based payment arrangements [axis] Axis ifrs-full:TypesOfSharebasedPaymentArrangementsAxis
1180 Share-based payment arrangements [member] Member ifrs-full:SharebasedPaymentArrangementsMember
1181 Stock Option Plan Member huskf:StockOptionPlanMember
1182 Earnings per share [line items] LineItems ifrs-full:EarningsPerShareLineItems
1183 Earnings per share [abstract] Abstract ifrs-full:EarningsPerShareAbstract
1184 Net earnings Concept (Monetary) For Period Credit ifrs-full:ProfitLoss
1185 Effect of dividends declared on preferred shares in the year Concept (Monetary) For Period Debit ifrs-full:AdjustmentToProfitLossForPreferenceShareDividends
1186 Net earnings – basic Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntity
1187 Dilutive effect of accounting for stock options(1) Concept (Monetary) For Period Credit huskf:Dilutiveeffectofshareoptions
1188 Net earnings – diluted Concept (Monetary) For Period Credit ifrs-full:ProfitLossAttributableToOrdinaryEquityHoldersOfParentEntityIncludingDilutiveEffects
1189 Weighted average number of common shares outstanding, basic Concept (Shares) For Period ifrs-full:WeightedAverageShares
1190 Weighted average common shares outstanding – diluted Concept (Shares) For Period ifrs-full:AdjustedWeightedAverageShares
1191 Earnings per share – basic ($/share) Concept (Share) For Period ifrs-full:BasicEarningsLossPerShare
1192 Earnings per share – diluted ($/share) Concept (Share) For Period ifrs-full:DilutedEarningsLossPerShare
1193 Stock-based compensation expense, cash-settled Concept (Monetary) For Period Debit ifrs-full:ExpenseFromCashsettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
1194 Stock-based compensation expense, equity settled Concept (Monetary) For Period Debit ifrs-full:ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
1195 Dilutive effect of share options (in options) Concept (Shares) For Period huskf:DilutiveEffectOfStockDividendsOnNumberOfOrdinaryShares
1196 Dilutive effect of share options on number of ordinary shares Concept (Shares) For Period ifrs-full:DilutiveEffectOfShareOptionsOnNumberOfOrdinaryShares
1197 2458402 - Disclosure - Production, Operating and Transportation and Selling, General, and Administrative Expenses - Production, Operating and Trasportation Expenses (Details) Network

*

*

 http://www.huskyenergy.ca/role/ProductionOperatingAndTransportationAndSellingGeneralAndAdministrativeExpensesProductionOperatingAndTrasportationExpensesDetails
1198 Implied Table Table

*

*

 implied:Table
1199 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1200 Services and support costs Concept (Monetary) For Period Debit ifrs-full:ServicesExpense
1201 Salaries and benefits Concept (Monetary) For Period Debit ifrs-full:ShorttermEmployeeBenefitsExpense
1202 Materials, equipment rentals and leases Concept (Monetary) For Period Debit huskf:MaterialsEquipmentRentalsAndLeases
1203 Energy and utility Concept (Monetary) For Period Debit ifrs-full:EnergyExpense
1204 Licensing fees Concept (Monetary) For Period Debit huskf:LicenseFeeExpense
1205 Transportation Concept (Monetary) For Period Debit ifrs-full:TransportationExpense
1206 Other Concept (Monetary) For Period Debit ifrs-full:OtherExpenseByNature
1207 Total production, operating and transportation expenses Concept (Monetary) For Period Debit huskf:ProductionOperatingandTransportationExpenses
1208 2458403 - Disclosure - Production, Operating and Transportation and Selling, General, and Administrative Expenses - Selling, general and administrative (Details) Network

*

*

 http://www.huskyenergy.ca/role/ProductionOperatingAndTransportationAndSellingGeneralAndAdministrativeExpensesSellingGeneralAndAdministrativeDetails
1209 Implied Table Table

*

*

 implied:Table
1210 Analysis of income and expense [abstract] Abstract ifrs-full:AnalysisOfIncomeAndExpenseAbstract
1211 Employee costs(1) Concept (Monetary) For Period Debit ifrs-full:EmployeeBenefitsExpense
1212 Stock-based compensation expense(2) Concept (Monetary) For Period Debit ifrs-full:ExpenseFromSharebasedPaymentTransactionsWithEmployees
1213 Contract services Concept (Monetary) For Period Debit huskf:ContractServicesExpense
1214 Equipment rentals and leases Concept (Monetary) For Period Debit ifrs-full:RentalExpense
1215 Maintenance and other Concept (Monetary) For Period Debit ifrs-full:RepairsAndMaintenanceExpense
1216 Total selling, general and administrative expenses Concept (Monetary) For Period Debit ifrs-full:SellingGeneralAndAdministrativeExpense
1217 2461402 - Disclosure - Financial Items (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialItemsDetails
1218 Disclosure of detailed information about borrowings [table] Table

*

*

 ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsTable
1219 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1220 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1221 Long-term debt Member huskf:NonCurrentDebtMember
1222 Contribution payable (note 11) Member huskf:ContributionPayableMember
1223 Other Member huskf:DebtOtherMember
1224 Disclosure of detailed information about borrowings [line items] LineItems ifrs-full:DisclosureOfDetailedInformationAboutBorrowingsLineItems
1225 Foreign exchange Abstract huskf:ForeignExchangeAbstract
1226 Non-cash working capital gains Concept (Monetary) For Period Credit huskf:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLossNonCashWorkingCapital
1227 Other foreign exchange gains (losses) Concept (Monetary) For Period Credit huskf:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLossOther
1228 Net foreign exchange gains (losses) Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss
1229 Finance income Concept (Monetary) For Period Credit ifrs-full:FinanceIncome
1230 Finance expenses Abstract huskf:FinanceExpensesAbstract
1231 Interest costs incurred Concept (Monetary) For Period ifrs-full:InterestCostsIncurred
1232 Interest costs capitalised Concept (Monetary) For Period ifrs-full:InterestCostsCapitalised
1233 Finance costs and interest before net foreign exchange gain (loss) Concept (Monetary) For Period Debit ifrs-full:InterestExpense
1234 Accretion of asset retirement obligations (note 16) Concept (Monetary) For Period Credit huskf:AccretionOtherProvisions
1235 Finance expenses Concept (Monetary) For Period Debit ifrs-full:FinanceCosts
1236 Financial items Concept (Monetary) For Period Credit huskf:FinanceIncomeCostandNetForeignExchangeGainLoss
1237 Capitalisation rate of borrowing costs eligible for capitalisation Concept (Percent) For Period ifrs-full:CapitalisationRateOfBorrowingCostsEligibleForCapitalisation
1238 2464402 - Disclosure - Pensions and Other Post-employment Benefits - Defined Contribution Pension Plan. Defined Benefit Obligation, Fair Value of Plan Assets and Funded Status (Details) Network

*

*

 http://www.huskyenergy.ca/role/PensionsAndOtherPostEmploymentBenefitsDefinedContributionPensionPlanDefinedBenefitObligationFairValueOfPlanAssetsAndFundedStatusDetails
1239 Disclosure of net defined benefit liability (asset) [table] Table

*

*

 ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetTable
1240 Retirement Plan Funding Status [Axis] Axis huskf:RetirementPlanFundingStatus1Axis
1241 Retirement Plan Funding Status [Domain] Member huskf:RetirementPlanFundingStatus1Domain
1242 Retirement Plan Funding Status [Member] Member huskf:RetirementPlanFundingStatus1Member
1243 Retirement plan name [axis] Axis huskf:RetirementPlanName1Axis
1244 Retirement plan name [Domain] Member huskf:RetirementPlanName1Domain
1245 DB Pension Plans Member huskf:DefinedBenefitPensionPlanMember
1246 OPEB Plans Member huskf:OtherPostEmploymentBenefitPlansMember
1247 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1248 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1249 Defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1250 Fair value of plan assets Member ifrs-full:PlanAssetsMember
1251 Disclosure of net defined benefit liability (asset) [line items] LineItems ifrs-full:DisclosureOfNetDefinedBenefitLiabilityAssetLineItems
1252 Defined contribution plan expense Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedContributionPlans
1253 Defined benefit obligation, beginning balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1254 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1255 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1256 Contributions by employer Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1257 Benefits paid Concept (Monetary) For Period Debit ifrs-full:PaymentsFromPlanNetDefinedBenefitLiabilityAsset
1258 Settlements Concept (Monetary) For Period Debit ifrs-full:PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset
1259 Increase (decrease) through business combinations and disposals, net defined benefit liability (asset) Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughBusinessCombinationsAndDisposalsNetDefinedBenefitLiabilityAsset
1260 Remeasurements Abstract ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract
1261 Actuarial (gain) loss – experience Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1262 Actuarial loss – financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1263 Increase (decrease) through changes in foreign exchange rates, net defined benefit liability (asset) Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseThroughChangesInForeignExchangeRatesNetDefinedBenefitLiabilityAsset
1264 Return on plan assets greater than discount rate Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1265 Defined benefit obligation, ending balance Concept (Monetary) As Of Credit ifrs-full:LiabilityAssetOfDefinedBenefitPlans
1266 2464403 - Disclosure - Pensions and Other Post-employment Benefits - Narrative (Details) Network

*

*

 http://www.huskyenergy.ca/role/PensionsAndOtherPostEmploymentBenefitsNarrativeDetails
1267 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1268 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1269 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1270 Actuarial assumption of average health care cost trend for 2022 and thereafter Member huskf:ActuarialAssumptionOfAverageHealthCareCostTrendFor2022AndThereafterMember
1271 Geographical areas [axis] Axis ifrs-full:GeographicalAreasAxis
1272 Geographical areas [member] Member ifrs-full:GeographicalAreasMember
1273 Canada Member country:CA
1274 United States Member country:US
1275 Net defined benefit liability (asset) [axis] Axis ifrs-full:NetDefinedBenefitLiabilityAssetAxis
1276 Net defined benefit liability (asset) [member] Member ifrs-full:NetDefinedBenefitLiabilityAssetMember
1277 Defined benefit obligation, Inactive plan members Member huskf:PresentValueofDefinedBenefitObligationInactivePlanMember
1278 Defined benefit obligation, Active plan members Member huskf:PresentValueofDefinedBenefitObligationActivePlanMembersMember
1279 Fair value of plan assets Member ifrs-full:PlanAssetsMember
1280 Defined benefit obligation Member ifrs-full:PresentValueOfDefinedBenefitObligationMember
1281 Retirement plan name [axis] Axis huskf:RetirementPlanName1Axis
1282 Retirement plan name [Domain] Member huskf:RetirementPlanName1Domain
1283 DB Pension Plans Member huskf:DefinedBenefitPensionPlanMember
1284 OPEB Plans Member huskf:OtherPostEmploymentBenefitPlansMember
1285 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1286 Net defined benefit asset Concept (Monetary) As Of Debit ifrs-full:PlanAssetsAtFairValue
1287 Contributions by employer Concept (Monetary) For Period Debit ifrs-full:ContributionsToPlanByEmployerNetDefinedBenefitLiabilityAsset
1288 Defined benefit obligation Concept (Monetary) As Of Credit ifrs-full:DefinedBenefitObligationAtPresentValue
1289 Settlements gain (loss) Concept (Monetary) For Period Debit ifrs-full:GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1290 Defined benefit obligation, annuity purchased Concept (Monetary) As Of Debit huskf:DefinedBenefitObligationAnnuityPurchased
1291 Actuarial gains (losses) arising from remeasurement of plan assets Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1292 Remeasurement of pension plans Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome
1293 Actuarial assumption of medical cost trend rates Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfMedicalCostTrendRates
1294 Actuarial assumption of medical cost trend rates, decreases per period Concept (Percent) As Of huskf:ActuarialAssumptionOfMedicalCostTrendRatesAnnualDecreases
1295 2464404 - Disclosure - Pensions and Other Post-employment Benefits - DB Pension Plan Assets (Details) Network

*

*

 http://www.huskyenergy.ca/role/PensionsAndOtherPostEmploymentBenefitsDbPensionPlanAssetsDetails
1296 Implied Table Table

*

*

 implied:Table
1297 Disclosure of employee benefits [Abstract] Abstract huskf:DisclosureofemployeebenefitsAbstract
1298 Target allocation, Money market type funds (percent) Concept (Percent) As Of huskf:CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssetsTargetAllocationPercentage
1299 Target allocation, Equity securities (percent) Concept (Percent) As Of huskf:EquityInstrumentsAmountContributedToFairValueOfPlanAssetsTargetAllocationPercentage
1300 Target allocation, Debt securities (percent) Concept (Percent) As Of huskf:DebtInstrumentsAmountContributedToFairValueOfPlanAssetsTargetAllocationPercentage
1301 Money market type funds (percent) Concept (Percent) As Of huskf:CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssetsAllocationPercentage
1302 Equity securities (percent) Concept (Percent) As Of huskf:EquityInstrumentsAmountContributedToFairValueOfPlanAssetsAllocationPercentage
1303 Debt securities (percent) Concept (Percent) As Of huskf:DebtInstrumentsAmountContributedToFairValueOfPlanAssetsAllocationPercentage
1304 2464405 - Disclosure - Pensions and Other Post-employment Benefits - Defined Contribution Pension Plan - Net Earnings and OCI (Details) Network

*

*

 http://www.huskyenergy.ca/role/PensionsAndOtherPostEmploymentBenefitsDefinedContributionPensionPlanNetEarningsAndOciDetails
1305 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1306 Retirement plan name [axis] Axis huskf:RetirementPlanName1Axis
1307 Retirement plan name [Domain] Member huskf:RetirementPlanName1Domain
1308 DB Pension Plans Member huskf:DefinedBenefitPensionPlanMember
1309 OPEB Plans Member huskf:OtherPostEmploymentBenefitPlansMember
1310 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1311 Current service cost Concept (Monetary) For Period Credit ifrs-full:CurrentServiceCostNetDefinedBenefitLiabilityAsset
1312 Past service cost Concept (Monetary) For Period Credit ifrs-full:PastServiceCostNetDefinedBenefitLiabilityAsset
1313 Interest cost Concept (Monetary) For Period Credit ifrs-full:InterestExpenseIncomeNetDefinedBenefitLiabilityAsset
1314 Settlements Concept (Monetary) For Period Debit ifrs-full:GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset
1315 Benefit cost Concept (Monetary) For Period Debit ifrs-full:PostemploymentBenefitExpenseDefinedBenefitPlans
1316 Actuarial (gain) loss – experience Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset
1317 Actuarial loss – financial assumptions Concept (Monetary) For Period Debit ifrs-full:ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset
1318 Return on plan assets greater than discount rate Concept (Monetary) For Period Debit ifrs-full:ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset
1319 Remeasurement effects recognized in OCI Concept (Monetary) For Period Debit ifrs-full:GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAsset
1320 2464406 - Disclosure - Pensions and Other Post-employment Benefits - Actuarial Assumptions and Sensitivity Analysis (Details) Network

*

*

 http://www.huskyenergy.ca/role/PensionsAndOtherPostEmploymentBenefitsActuarialAssumptionsAndSensitivityAnalysisDetails
1321 Disclosure of defined benefit plans [table] Table

*

*

 ifrs-full:DisclosureOfDefinedBenefitPlansTable
1322 Actuarial assumptions [axis] Axis ifrs-full:ActuarialAssumptionsAxis
1323 Actuarial assumptions [member] Member ifrs-full:ActuarialAssumptionsMember
1324 Discount rate Member ifrs-full:ActuarialAssumptionOfDiscountRatesMember
1325 Health care cost trend rate Member ifrs-full:ActuarialAssumptionOfMedicalCostTrendRatesMember
1326 Range [axis] Axis ifrs-full:RangeAxis
1327 Ranges [member] Member ifrs-full:RangesMember
1328 Minimum Member ifrs-full:BottomOfRangeMember
1329 Maximum Member ifrs-full:TopOfRangeMember
1330 Retirement plan name [axis] Axis huskf:RetirementPlanName1Axis
1331 Retirement plan name [Domain] Member huskf:RetirementPlanName1Domain
1332 DB Pension Plans Member huskf:DefinedBenefitPensionPlanMember
1333 OPEB Plans Member huskf:OtherPostEmploymentBenefitPlansMember
1334 Disclosure of defined benefit plans [line items] LineItems ifrs-full:DisclosureOfDefinedBenefitPlansLineItems
1335 Discount rate for benefit expense and obligation Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfDiscountRates
1336 Rate of compensation expense Concept (Percent) As Of ifrs-full:ActuarialAssumptionOfExpectedRatesOfSalaryIncreases
1337 Impact on defined benefit obligation, increase in assumption Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleIncreaseInActuarialAssumption
1338 Impact on defined benefit obligation, decrease in assumption Concept (Monetary) As Of Credit ifrs-full:IncreaseDecreaseInDefinedBenefitObligationDueToReasonablyPossibleDecreaseInActuarialAssumption
1339 Percentage of reasonably possible increase in actuarial assumption Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleIncreaseInActuarialAssumption
1340 Percentage of reasonably possible decrease in actuarial assumption Concept (Percent) As Of ifrs-full:PercentageOfReasonablyPossibleDecreaseInActuarialAssumption
1341 2467402 - Disclosure - Cash Flows - Change in Non-cash Working Capital (Details) Network

*

*

 http://www.huskyenergy.ca/role/CashFlowsChangeInNonCashWorkingCapitalDetails
1342 Implied Table Table

*

*

 implied:Table
1343 Disclosure of cash flow statement [Abstract] Abstract huskf:DisclosureofcashflowstatementAbstract
1344 Accounts receivable Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
1345 Inventories Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForDecreaseIncreaseInInventories
1346 Prepaid expenses Concept (Monetary) For Period Debit huskf:AdjustmentsforDecreaseIncreaseinPrepaidExpenses
1347 Accounts payable and accrued liabilities Concept (Monetary) For Period Debit huskf:AdjustmentsForIncreaseDecreaseinAccountsPayableAndAccruedLiabilities
1348 Change in non-cash working capital Concept (Monetary) For Period Credit ifrs-full:IncreaseDecreaseInWorkingCapital
1349 Change in non-cash working capital, operating activities Concept (Monetary) For Period Debit huskf:IncreaseDecreaseinWorkingCapitalfromOperatingActivities
1350 Change in non-cash working capital, financing activities Concept (Monetary) For Period Debit huskf:IncreaseDecreaseinWorkingCapitalfromFinancingActivities
1351 Change in non-cash working capital, investing activities Concept (Monetary) For Period Debit huskf:IncreaseDecreaseinWorkingCapitalfromInvestingActivities
1352 2470402 - Disclosure - Financial Instruments and Risk Management - Financial Instruments at Fair Value (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialInstrumentsAndRiskManagementFinancialInstrumentsAtFairValueDetails
1353 Disclosure Of Financial Assets And Liabilities [Table] Table

*

*

 huskf:DisclosureOfFinancialAssetsAndLiabilitiesTable
1354 Classes of financial liabilities [axis] Axis ifrs-full:ClassesOfFinancialLiabilitiesAxis
1355 Financial liabilities, class [member] Member ifrs-full:FinancialLiabilitiesMember
1356 Financial liabilities at fair value Member ifrs-full:FinancialLiabilitiesAtFairValueMember
1357 Financial liabilities at amortised cost Member ifrs-full:FinancialLiabilitiesAtAmortisedCostMember
1358 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1359 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1360 Derivatives Member ifrs-full:DerivativesMember
1361 Other financial assets Member huskf:OtherFinancialAssetsMember
1362 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1363 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1364 Natural gas(1) Member huskf:FuturesContractNaturalGasMember
1365 Crude oil(2) Member huskf:FuturesContractCrudeOilMember
1366 Foreign currency forwards Member ifrs-full:ForwardContractMember
1367 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1368 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1369 FVTPL Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
1370 FVTPL, held-for-trading Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
1371 Disclosure Of Financial Assets And Liabilities [Line Items] LineItems huskf:DisclosureOfFinancialAssetsAndLiabilitiesLineItems
1372 Financial assets, at fair value Concept (Monetary) As Of Debit ifrs-full:FinancialAssetsAtFairValue
1373 Net amounts for pay-floating (receive-fixed) interest rate swaps for which net cash flows are exchanged Concept (Monetary) As Of Credit ifrs-full:NetAmountsForPayfloatingReceivefixedInterestRateSwapsForWhichNetCashFlowsAreExchanged
1374 Hedge of net investment(3)(4) Concept (Monetary) As Of Credit ifrs-full:HedgingInstrumentLiabilities
1375 Derivative financial liabilities Concept (Monetary) As Of Credit ifrs-full:DerivativeFinancialLiabilities
1376 Increase (decrease) in financial assets Concept (Monetary) For Period Debit ifrs-full:IncreaseDecreaseInFinancialAssets
1377 Trading inventories measured at fair value less costs to sell Concept (Monetary) As Of Debit ifrs-full:InventoriesAtFairValueLessCostsToSell
1378 Financial liabilities Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilities
1379 Financial liabilities, at fair value Concept (Monetary) As Of Credit ifrs-full:FinancialLiabilitiesAtFairValue
1380 2470403 - Disclosure - Financial Instruments and Risk Management - Market Risk (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialInstrumentsAndRiskManagementMarketRiskDetails
1381 Disclosure Of Financial Assets And Liabilities [Table] Table

*

*

 huskf:DisclosureOfFinancialAssetsAndLiabilitiesTable
1382 Types of interest rates [axis] Axis ifrs-full:TypesOfInterestRatesAxis
1383 Interest rate types [member] Member ifrs-full:InterestRateTypesMember
1384 Fixed interest rate [member] Member ifrs-full:FixedInterestRateMember
1385 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1386 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1387 Cost Member ifrs-full:GrossCarryingAmountMember
1388 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1389 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1390 Two Point Nine Nine Nine Percent Swap [Member] Member huskf:TwoPointNineNineNinePercentSwapMember
1391 Syndicated Bank Facilities [Member] Member huskf:SyndicatedBankFacilitiesMember
1392 Unwound interest rate swaps Member huskf:UnwoundInterestRateSwapsMember
1393 Three Point Zero Percent Swap [Member] Member huskf:ThreePointZeroPercentSwapMember
1394 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1395 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1396 Crude oil price Member huskf:FuturesContractCrudeOilMember
1397 Categories of financial assets [axis] Axis ifrs-full:CategoriesOfFinancialAssetsAxis
1398 Financial assets, category [member] Member ifrs-full:FinancialAssetsCategoryMember
1399 FVTPL, held-for-trading Member ifrs-full:FinancialAssetsAtFairValueThroughProfitOrLossClassifiedAsHeldForTradingCategoryMember
1400 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1401 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1402 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
1403 Derivatives Member ifrs-full:DerivativesMember
1404 Types of hedges [axis] Axis ifrs-full:TypesOfHedgesAxis
1405 Hedges [member] Member ifrs-full:TypesOfHedgesMember
1406 Hedges of net investment in foreign operations [member] Member ifrs-full:HedgesOfNetInvestmentInForeignOperationsMember
1407 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
1408 Disclosure Of Financial Assets And Liabilities [Line Items] LineItems huskf:DisclosureOfFinancialAssetsAndLiabilitiesLineItems
1409 Interest rate, weighted average Concept (Percent) As Of ifrs-full:BorrowingsInterestRate
1410 Notional amount Concept (Monetary) As Of ifrs-full:NotionalAmount
1411 Unrealized mark to market loss (gain) (note 24) Concept (Monetary) For Period Debit ifrs-full:AdjustmentsForFairValueGainsLosses
1412 Line of credit, maximum borrowing capacity Concept (Monetary) As Of Credit huskf:LineOfCreditFacilityMaximumBorrowingCapacity1
1413 Financial instruments designated as hedging instruments, at fair value Concept (Monetary) As Of ifrs-full:FinancialInstrumentsDesignatedAsHedgingInstrumentsAtFairValue
1414 Gains (losses) on hedges of net investments in foreign operations, net of tax Concept (Monetary) For Period Credit ifrs-full:GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax
1415 Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToComponentsOfOtherComprehensiveIncomeThatWillNotBeReclassifiedToProfitOrLoss
1416 Hedged item, liabilities Concept (Monetary) As Of Credit ifrs-full:HedgedItemLiabilities
1417 Gains (losses) recognised in other comprehensive income on financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently Concept (Monetary) For Period Credit ifrs-full:GainsLossesRecognisedInOtherComprehensiveIncomeOnFinancialLiabilitiesAtFairValueThroughProfitOrLossDesignatedUponInitialRecognitionOrSubsequently
1418 Long-term debt Concept (Monetary) As Of Credit ifrs-full:LongtermBorrowings
1419 Amortization of the accrued gain upon terminating derivative Concept (Monetary) For Period Debit huskf:DerivativeAccruedGainLossTerminationofDerivativeAmortization
1420 Reserve of cash flow hedges Concept (Monetary) As Of Credit ifrs-full:ReserveOfCashFlowHedgesContinuingHedges
1421 Tax relating to cash flow hedges Concept (Monetary) For Period Debit ifrs-full:IncomeTaxRelatingToCashFlowHedgesOfOtherComprehensiveIncome
1422 Amortization of the accrued gain upon settlement of derivative Concept (Monetary) For Period Debit huskf:DerivativeAccruedGainLossSettlementofDerivativeAmortization
1423 2470405 - Disclosure - Financial Instruments and Risk Management - Offsetting Financial Assets and Liabilities (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialInstrumentsAndRiskManagementOffsettingFinancialAssetsAndLiabilitiesDetails
1424 Disclosure Of Offsetting Of Financial Assets And Liabilities [Table] Table

*

*

 huskf:DisclosureOfOffsettingOfFinancialAssetsAndLiabilitiesTable
1425 Types of financial assets [axis] Axis ifrs-full:TypesOfFinancialAssetsAxis
1426 Financial assets, type [member] Member ifrs-full:FinancialAssetsTypeMember
1427 Financial assets, derivatives Member huskf:FinancialAssetsDerivativeMember
1428 Financial assets, normal purchase and sale agreements Member huskf:FinancialAssetsNormalPurchaseAndSaleAgreementsMember
1429 Types of financial liabilities [axis] Axis ifrs-full:TypesOfFinancialLiabilitiesAxis
1430 Financial liabilities, type [member] Member ifrs-full:FinancialLiabilitiesTypeMember
1431 Financial liabilities, derivatives Member huskf:FinancialLiabilitiesDerivativeMember
1432 Financial liabilities, normal purchase and sale agreements Member huskf:FinancialLiabilityNormalPurchaseAndSaleAgreementsMember
1433 Disclosure Of Offsetting Of Financial Assets And Liabilities [Line Items] LineItems huskf:DisclosureOfOffsettingOfFinancialAssetsAndLiabilitiesLineItems
1434 Offsetting financial assets [abstract] Abstract ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPositionAbstract
1435 Offsetting financial assets, Gross amount Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1436 Offsetting financial assets, Amount offset Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSetOffAgainstFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1437 Offsetting financial assets, Net amount Concept (Monetary) As Of Debit ifrs-full:NetFinancialAssetsSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1438 Offsetting financial liabilities [abstract] Abstract ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPositionAbstract
1439 Offsetting financial liabilities, Gross amount Concept (Monetary) As Of Credit ifrs-full:GrossFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1440 Offsetting financial liabilities, Amount offset Concept (Monetary) As Of Debit ifrs-full:GrossFinancialAssetsSetOffAgainstFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreements
1441 Offsetting financial liabilities, Net amount Concept (Monetary) As Of Credit ifrs-full:NetFinancialLiabilitiesSubjectToOffsettingEnforceableMasterNettingArrangementsOrSimilarAgreementsInStatementOfFinancialPosition
1442 2470406 - Disclosure - Financial Instruments and Risk Management - Market Risk Sensitivity Analysis (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialInstrumentsAndRiskManagementMarketRiskSensitivityAnalysisDetails
1443 Disclosure of nature and extent of risks arising from financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsTable
1444 Classes of financial instruments [axis] Axis ifrs-full:ClassesOfFinancialInstrumentsAxis
1445 Financial instruments, class [member] Member ifrs-full:ClassesOfFinancialInstrumentsMember
1446 Interest rate swap contract [member] Member ifrs-full:InterestRateSwapContractMember
1447 Currency [Axis] Axis srt:CurrencyAxis
1448 All Currencies [Domain] Member currency:AllCurrenciesDomain
1449 United States of America, Dollars Member currency:USD
1450 Sensitivity Analysis [Axis] Axis huskf:SensitivityAnalysisAxis
1451 Sensitivity Analysis [Domain] Member huskf:SensitivityAnalysisDomain
1452 Sensitivity analysis, increase Member huskf:SensitivityAnalysisIncreaseMember
1453 Sensitivity analysis, decrease Member huskf:SensitivityAnalysisDecreaseMember
1454 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1455 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1456 Crude oil price Member huskf:FuturesContractCrudeOilMember
1457 Natural gas price Member huskf:FuturesContractNaturalGasMember
1458 Types of risks [axis] Axis ifrs-full:TypesOfRisksAxis
1459 Risks [member] Member ifrs-full:TypesOfRisksMember
1460 Commodity price risk Member ifrs-full:CommodityPriceRiskMember
1461 Currency risk Member ifrs-full:CurrencyRiskMember
1462 Interest rate risk [member] Member ifrs-full:InterestRateRiskMember
1463 Disclosure of nature and extent of risks arising from financial instruments [line items] LineItems ifrs-full:DisclosureOfNatureAndExtentOfRisksArisingFromFinancialInstrumentsLineItems
1464 Market risk sensitivity analysis Concept (Monetary) As Of Debit huskf:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableImpactOnPreTaxEarnings
1465 Sensitivity analysis for types of market risk, reasonably possible change in risk variable, percent Concept (Percent) For Period huskf:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariablePercent
1466 Sensitivity analysis for types of market risk, reasonably possible change in risk variable, amount Concept (Monetary) For Period Credit huskf:SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleChangeInRiskVariableAmount
1467 2470407 - Disclosure - Financial Instruments and Risk Management - Financial Risk (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialInstrumentsAndRiskManagementFinancialRiskDetails
1468 Disclosure of detailed information about financial instruments [table] Table

*

*

 ifrs-full:DisclosureOfFinancialInstrumentsTable
1469 Major customers [axis] Axis ifrs-full:MajorCustomersAxis
1470 Customers [member] Member ifrs-full:MajorCustomersMember
1471 Single customer over 10% of revenue Member huskf:SingleCustomerOver10ofrevenueMember
1472 Concentration Risk Type [Axis] Axis huskf:ConcentrationRiskType1Axis
1473 Concentration Risk Type1 [Domain] Member huskf:ConcentrationRiskType1Domain
1474 Customer concentration risk [Member] Member huskf:CustomerConcentrationRisk1Member
1475 Borrowings by name [axis] Axis ifrs-full:BorrowingsByNameAxis
1476 Borrowings by name [member] Member ifrs-full:BorrowingsByNameMember
1477 Bank operating loan Member huskf:BankOperatingLoanMember
1478 Syndicated Bank Facilities [Member] Member huskf:SyndicatedBankFacilitiesMember
1479 Disclosure of detailed information about financial instruments [line items] LineItems ifrs-full:DisclosureOfFinancialInstrumentsLineItems
1480 Line of credit, maximum borrowing capacity Concept (Monetary) As Of Credit huskf:LineOfCreditFacilityMaximumBorrowingCapacity1
1481 Line of credit, current borrowing capacity Concept (Monetary) As Of Credit huskf:LineofCreditFacilityCurrentBorrowingCapacity
1482 Authorised capital commitments, pre-registration Concept (Monetary) As Of Credit huskf:AuthorisedCapitalCommitmentsPreRegistration
1483 Revenues Concept (Monetary) For Period Credit ifrs-full:Revenue
1484 2470408 - Disclosure - Financial Instruments and Risk Management - Accounts Receivable Aging (Details) Network

*

*

 http://www.huskyenergy.ca/role/FinancialInstrumentsAndRiskManagementAccountsReceivableAgingDetails
1485 Disclosure of financial assets that are either past due or impaired [table] Table

*

*

 ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedTable
1486 Classes of financial assets [axis] Axis ifrs-full:ClassesOfFinancialAssetsAxis
1487 Financial assets, class [member] Member ifrs-full:FinancialAssetsMember
1488 Trade receivables Member ifrs-full:TradeReceivablesMember
1489 Past due status [axis] Axis ifrs-full:PastDueStatusAxis
1490 Past due status [member] Member ifrs-full:PastDueStatusMember
1491 Current Member ifrs-full:CurrentMember
1492 Past due (1 – 30 days) Member huskf:LaterThanCurrentAndNotLaterThanOneMonthMember
1493 Past due (31 – 60 days) Member ifrs-full:LaterThanOneMonthAndNotLaterThanTwoMonthsMember
1494 Past due (61 – 90 days) Member ifrs-full:LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember
1495 Past due (more than 90 days) Member ifrs-full:LaterThanThreeMonthsMember
1496 Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis] Axis ifrs-full:CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis
1497 Carrying amount [member] Member ifrs-full:CarryingAmountMember
1498 Cost Member ifrs-full:GrossCarryingAmountMember
1499 Provision for expected credit losses Member ifrs-full:AccumulatedImpairmentMember
1500 Disclosure of financial assets that are either past due or impaired [line items] LineItems ifrs-full:DisclosureOfFinancialAssetsThatAreEitherPastDueOrImpairedLineItems
1501 Accounts receivable Concept (Monetary) As Of Debit ifrs-full:FinancialAssets
1502 Impairment loss, receivables Concept (Monetary) For Period Debit ifrs-full:ImpairmentLossRecognisedInProfitOrLossTradeReceivables
1503 2473402 - Disclosure - Related Party Transactions - Significant Subsidiaries and Joint Operations (Details) Network

*

*

 http://www.huskyenergy.ca/role/RelatedPartyTransactionsSignificantSubsidiariesAndJointOperationsDetails
1504 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1505 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1506 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1507 Husky Midstream Limited Partnership Member huskf:HuskyMidstreamLimitedPartnershipMember
1508 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1509 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1510 Joint ventures where entity is venturer Member ifrs-full:JointVenturesWhereEntityIsVenturerMember
1511 Entities with joint control or significant influence over entity Member ifrs-full:JointControlOrSignificantInfluenceMember
1512 Joint operations [axis] Axis ifrs-full:JointOperationsAxis
1513 Entity's total for joint operations [member] Member ifrs-full:EntitysTotalForJointOperationsMember
1514 Husky Oil Operations Limited Member huskf:HuskyOilOperationsLimitedMember
1515 Husky Energy International Corporation Member huskf:HuskyEnergyInternationalCorporationMember
1516 Lima Refining Company Member huskf:LimaRefiningCompanyMember
1517 Husky Marketing and Supply Company Member huskf:HuskyMarketingandSupplyCompanyMember
1518 Husky Oil Limited Partnership Member huskf:HuskyOilLimitedPartnershipMember
1519 Husky Terra Nova Partnership Member huskf:HuskyTerraNovaPartnershipMember
1520 Husky Downstream General Partnership Member huskf:HuskyDownstreamGeneralPartnershipMember
1521 Husky Energy Marketing Partnership Member huskf:HuskyEnergyMarketingPartnershipMember
1522 Sunrise Oil Sands Partnership Member huskf:SunriseOilSandsPartnershipMember
1523 BP-Husky Refining LLC Member huskf:BPHuskyRefiningLLCMember
1524 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1525 Revenue from rendering of services, related party transactions Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
1526 Purchases of goods, related party transactions Concept (Monetary) For Period Debit ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
1527 Distributions, Related Party Transactions Concept (Monetary) For Period Credit huskf:DistributionsRelatedPartyTransactions
1528 Contributions, Related Party Transactions Concept (Monetary) For Period Debit huskf:ContributionsRelatedPartyTransactions
1529 Due from related parties, related party transactions Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
1530 Proportion of ownership interest in joint operation Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointOperation
1531 2473403 - Disclosure - Related Party Transactions (Details) Network

*

*

 http://www.huskyenergy.ca/role/RelatedPartyTransactionsDetails
1532 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1533 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1534 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1535 Husky Midstream Limited Partnership Member huskf:HuskyMidstreamLimitedPartnershipMember
1536 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1537 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1538 Joint ventures where entity is venturer Member ifrs-full:JointVenturesWhereEntityIsVenturerMember
1539 Entities with joint control or significant influence over entity Member ifrs-full:JointControlOrSignificantInfluenceMember
1540 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1541 Share of equity investment (percent) Concept (Percent) For Period ifrs-full:ProportionOfOwnershipInterestInJointVenture
1542 Revenue from rendering of services, related party transactions Concept (Monetary) For Period Credit ifrs-full:RevenueFromRenderingOfServicesRelatedPartyTransactions
1543 Purchases of goods, related party transactions Concept (Monetary) For Period Debit ifrs-full:PurchasesOfGoodsRelatedPartyTransactions
1544 Distributions, Related Party Transactions Concept (Monetary) For Period Credit huskf:DistributionsRelatedPartyTransactions
1545 Contributions, Related Party Transactions Concept (Monetary) For Period Debit huskf:ContributionsRelatedPartyTransactions
1546 Due from related parties, related party transactions Concept (Monetary) As Of Debit ifrs-full:AmountsReceivableRelatedPartyTransactions
1547 Deferred Revenue From Construction Contracts, Percentage of Completion Method Concept (Monetary) For Period Credit huskf:DeferredRevenueFromConstructionContractsPercentageofCompletionMethod
1548 2473404 - Disclosure - Related Party Transactions - Compensation of key management personnel (Details) Network

*

*

 http://www.huskyenergy.ca/role/RelatedPartyTransactionsCompensationOfKeyManagementPersonnelDetails
1549 Disclosure of transactions between related parties [table] Table

*

*

 ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesTable
1550 Categories of related parties [axis] Axis ifrs-full:CategoriesOfRelatedPartiesAxis
1551 Entity's total for related parties [member] Member ifrs-full:EntitysTotalForRelatedPartiesMember
1552 Key management personnel Member ifrs-full:KeyManagementPersonnelOfEntityOrParentMember
1553 Disclosure of transactions between related parties [line items] LineItems ifrs-full:DisclosureOfTransactionsBetweenRelatedPartiesLineItems
1554 Short-term employee benefits(1) Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationShorttermEmployeeBenefits
1555 Stock-based compensation(2) Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensationSharebasedPayment
1556 Key management personnel compensation Concept (Monetary) For Period Debit ifrs-full:KeyManagementPersonnelCompensation
1557 2476402 - Disclosure - Commitments and Contingencies (Details) Network

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 http://www.huskyenergy.ca/role/CommitmentsAndContingenciesDetails
1558 Disclosure of maturity analysis for non-derivative financial liabilities [table] Table

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 ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesTable
1559 Joint ventures [axis] Axis ifrs-full:JointVenturesAxis
1560 Entity's total for joint ventures [member] Member ifrs-full:EntitysTotalForJointVenturesMember
1561 Husky Midstream Limited Partnership Member huskf:HuskyMidstreamLimitedPartnershipMember
1562 Maturity [axis] Axis ifrs-full:MaturityAxis
1563 Aggregated time bands [member] Member ifrs-full:AggregatedTimeBandsMember
1564 Within 1 year Member ifrs-full:NotLaterThanOneYearMember
1565 After 1 year but no more than 5 years Member ifrs-full:LaterThanOneYearAndNotLaterThanFiveYearsMember
1566 More than 5 years Member ifrs-full:LaterThanFiveYearsMember
1567 Disclosure of maturity analysis for non-derivative financial liabilities [line items] LineItems ifrs-full:DisclosureOfMaturityAnalysisForNonderivativeFinancialLiabilitiesLineItems
1568 Operating leases(1) Concept (Monetary) As Of Credit ifrs-full:MinimumLeasePaymentsPayableUnderNoncancellableOperatingLease
1569 Firm transportation agreements(1) Concept (Monetary) As Of Credit huskf:ContractualCommitmentsForTransportation
1570 Unconditional purchase obligations(2) Concept (Monetary) As Of Credit huskf:CapitalCommitmentsUnconditionalPurchaseObligations
1571 Lease rentals and exploration work agreements Concept (Monetary) As Of Credit huskf:ContractualCommitmentsForExploration
1572 Obligations to fund equity investee(3) Concept (Monetary) As Of Credit ifrs-full:ContingentLiabilitiesRecognisedInBusinessCombination
1573 Minimum future payments for commitments Concept (Monetary) As Of Credit ifrs-full:CapitalCommitments
1574 2479401 - Disclosure - Capital Disclosures (Details) Network

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 http://www.huskyenergy.ca/role/CapitalDisclosuresDetails
1575 Implied Table Table

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 implied:Table
1576 Disclosure of additional information [Abstract] Abstract huskf:DisclosureofadditionalinformationAbstract
1577 Equity and debt Concept (Monetary) As Of Credit huskf:EquityAndDebt
1578 Debt to capital ratio Concept (Pure) For Period huskf:DebtToCapitalRatio
1579 Debt to capital ratio, target Concept (Pure) For Period huskf:DebtToCapitalRatioTarget
1580 Debt to funds from operation ratio Concept (Pure) For Period huskf:DebtToFundsFromOperationRatio
1581 Debt to funds from operation ratio, target Concept (Pure) For Period huskf:DebtToFundsFromOperationRatioTarget

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