INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - CAD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 837	$ 780	$ 2,514	$ 2,905
Net (loss) gain in foreign currency translation adjustments, net of hedging activities	(423)	605	577	(33)
Change in derivatives designated as cash flow hedges	1	2	5	5
Change in pension and post-retirement defined benefit plans	12	8	35	13
Other comprehensive (loss) income from equity investees	(5)	0	(7)	7
Other comprehensive (loss) income before income taxes	(415)	615	610	(8)
Income tax (expense) recovery	(7)	15	(1)	(5)
Net other comprehensive (loss) income	(422)	630	609	(13)
Comprehensive income	415	1,410	3,123	2,892
Comprehensive (loss) income attributable to non-controlling interest (Note 6)	(15)	20	16	13
Comprehensive income attributable to controlling shareholders	$ 430	$ 1,390	$ 3,107	$ 2,879