INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - CAD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 903	$ 1,325	$ 1,677	$ 2,125
Net gain (loss) in foreign currency translation adjustments, net of hedging activities	301	(611)	1,000	(638)
Change in derivatives designated as cash flow hedges	3	1	4	3
Change in pension and post-retirement defined benefit plans	11	(3)	23	5
Other comprehensive (loss) income from equity investees	(2)	4	(2)	7
Other comprehensive income (loss) before income taxes	313	(609)	1,025	(623)
Income tax (expense) recovery	0	(17)	6	(20)
Net other comprehensive income (loss)	313	(626)	1,031	(643)
Comprehensive income	1,216	699	2,708	1,482
Comprehensive income (loss) attributable to non-controlling interest	9	(7)	31	(7)
Comprehensive income attributable to controlling shareholders	$ 1,207	$ 706	$ 2,677	$ 1,489