Consolidated statements of comprehensive income (Parenthetical) - CAD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Items that will be subsequently reclassified to net earnings
Income tax relating to cash flow hedges	$ (70)	$ 30	$ (150)	$ 2
Items that will not be reclassified to net earnings
Income tax relating to actuarial gains (losses) of defined benefit plans	(30)	(41)	(56)	(156)
Income tax relating to publicly-traded and privately-held investments	(5)		(5)
Income tax relating to changes in fair value of financial liability attributable to change in credit risk of liability included in other comprehensive income	$ 10	$ (2)	$ 9	$ (8)
Actuarial assumption of discount rates	4.80%	5.00%	4.80%	5.00%	4.70%	4.70%	4.90%	4.60%

Income Tax Relating To Other Comprehensive Income, Cash Flow Hedges, Not To Be Reclassified To Net Profit Or Loss

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- Definition

The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]

+ References

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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans. [Refer: Other comprehensive income; Reserve of remeasurements of defined benefit plans; Defined benefit plans [domain]]

+ References

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