CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - CAD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Earnings	$ 607	$ 1,521	$ 2,664	$ 3,535
Other comprehensive income/(loss), net of tax
Change in unrealized gain/(loss) on cash flow hedges	352	(157)	646	213
Change in unrealized gain/(loss) on net investment hedges	(386)	129	(253)	222
Other comprehensive income from equity investees	0	24	0	2
Excluded components of fair value hedges	(4)	(1)	(5)	(2)
Reclassification to earnings of loss on cash flow hedges	52	61	109	113
Reclassification to earnings of pension and other postretirement benefits (OPEB) amounts	(3)	6	(5)	11
Foreign currency translation adjustments	1,881	(835)	1,173	(1,631)
Other comprehensive income/(loss), net of tax	1,892	(773)	1,665	(1,072)
Comprehensive income	2,499	748	4,329	2,463
Comprehensive income attributable to noncontrolling interests	(58)	(9)	(71)	(6)
Comprehensive income attributable to controlling interests	2,441	739	4,258	2,457
Preference share dividends	(145)	(90)	(247)	(182)
Comprehensive income attributable to common shareholders	$ 2,296	$ 649	$ 4,011	$ 2,275