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v3.24.1

Consolidated Statements of Cash Flows - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Operating Activities |  |
Net earnings | $ 8,295 | $ 9,077
Adjustments for: |  |
Depreciation, depletion, amortization and impairment | 6,435 | 8,786
Deferred income tax expense (recovery) | 560 | (990)
Accretion | 532 | 316
Unrealized foreign exchange loss (gain) on U.S. dollar denominated debt | (184) | 729
Change in fair value of financial instruments and trading inventory | (5) | (38)
Bargain purchase gain and revaluations | (1,125) |
(Gain) loss on disposal of assets | (992) | 45
Loss on extinguishment of long-term debt |  | 32
Share-based compensation | 108 | 328
Settlement of decommissioning and restoration liabilities | (390) | (314)
Other | 91 | 130
Increase in non-cash working capital | (981) | (2,421)
Cash flow provided by operating activities | 12,344 | 15,680
Investing Activities |  |
Capital and exploration expenditures | (5,828) | (4,987)
Capital expenditures classified as assets held for sale | (108) | (133)
Acquisitions | (2,394) |
Proceeds from disposal of assets | 1,882 | 315
Other investments | (83) | (36)
Decrease in non-cash working capital | 20 | 52
Cash flow used in investing activities | (6,511) | (4,789)
Financing Activities |  |
Net (decrease) increase in short-term debt | (2,343) | 1,473
Repayment of long-term debt | (5) | (5,128)
Issuance of long-term debt | 1,500 |
Lease liability payments | (331) | (329)
Issuance of common shares under share option plans | 187 | 496
Repurchase of common shares | (2,233) | (5,135)
Distributions relating to non-controlling interest | (16) | (9)
Dividends paid on common shares | (2,749) | (2,596)
Cash flow used in financing activities | (5,990) | (11,228)
Decrease in Cash and Cash Equivalents | (157) | (337)
Effect of foreign exchange on cash and cash equivalents | (94) | 112
Cash and cash equivalents at beginning of year | 1,980 | 2,205
Cash and Cash Equivalents at End of Year | 1,729 | 1,980
Supplementary Cash Flow Information |  |
Interest paid | 887 | 973
Income taxes paid | $ 2,604 | $ 4,737

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Period Type: | duration

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- Definition The cash outflow for capital and exploration expenditures. + References No definition available. + Details
Name: | su_CashFlowsUsedForCapitalAndExplorationExpenditures
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The cash outflow for capital expenditures classified as held for sale. + References No definition available. + Details
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Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity including a realized gain on foreign currency hedges. + References No definition available. + Details
Name: | su_GainLossOnExtinguishmentOfLongTermDebtIncludingRealizedGainOnForeignCurrencyHedges
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition (Increase) Decrease in non-cash working capital from assets and liabilities used for investing activities. + References No definition available. + Details
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Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition (Increase) Decrease in non-cash working capital from assets and liabilities used for operating activities. + References No definition available. + Details
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Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of cash paid for interest during the period classified as supplementary cash flow information. + References No definition available. + Details
Name: | su_InterestPaidClassifiedAsSupplementaryCashFlowInformation
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of cash inflow or outflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership. + References No definition available. + Details
Name: | su_ProceedsDistributionsFromSaleOfNonControllingInterest
Namespace Prefix: | su_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | su_SupplementaryInformationCashFlowAbstract
Namespace Prefix: | su_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration