The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

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Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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Namespace Prefix:	su_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of liabilities arising from partnership transactions at amortized cost, including accrued interest expense.

+ References

No definition available.

+ Details

Name:	su_LiabilityFromPartnership
Namespace Prefix:	su_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of long term debt before accrued charges and issuance costs.

+ References

No definition available.

+ Details

Name:	su_LongtermBorrowingsGross
Namespace Prefix:	su_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

The percentage of ownership interest acquired by counterparties in subsidiary.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Financial Instruments and Risk Management - Non Derivative Financial Instruments (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2023	Dec. 31, 2022
Non Derivative Financial Instruments
Carrying value of partnership liability		$ 413	$ 427
Fixed term debt
Non Derivative Financial Instruments
Long-term debt		11,129	9,840
Fair value of long-term debt		11,100	$ 9,400
Senior unsecured notes
Non Derivative Financial Instruments
Principal amount		$ 1,500
Fort McKay First Nation and the Mikisew Cree First Nation Partnership \| East Tank Farm Development
Non Derivative Financial Instruments
Percentage of partnership ownership interest acquired	49.00%