CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - CAD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Earnings	$ 1,866	$ 2,057
Other comprehensive income/(loss), net of tax
Change in unrealized gain/(loss) on cash flow hedges	(45)	294
Change in unrealized gain on net investment hedges	15	133
Excluded components of fair value hedges	7	(1)
Reclassification to earnings of loss on cash flow hedges	7	57
Reclassification to earnings of pension and other postretirement benefits (OPEB) amounts	(4)	(2)
Foreign currency translation adjustments	(59)	(708)
Other comprehensive loss, net of tax	(79)	(227)
Comprehensive income	1,787	1,830
Comprehensive income attributable to noncontrolling interests	(64)	(13)
Comprehensive income attributable to controlling interests	1,723	1,817
Preference share dividends	(84)	(102)
Comprehensive income attributable to common shareholders	$ 1,639	$ 1,715