Changes in Accumulated other comprehensive income ("AOCI") by component

6 Months Ended

Jun. 30, 2025

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Changes in Accumulated other comprehensive income ("AOCI") by component

Changes in Accumulated other comprehensive income ("AOCI") by component

Changes in AOCI attributable to controlling shareholders, net of tax, by component are as follows:

(in millions of Canadian dollars)	Foreign currency net of hedging activities		Derivatives		Pension and post- retirement defined benefit plans		Equity accounted investments		Total
Opening balance, April 1, 2025	$	3,385	$	10	$	(737)	$	(5)	$	2,653
Other comprehensive (loss) income before reclassifications	(1,707)		—		—		3		(1,704)
Amounts reclassified from AOCI	—		1		1		—		2
Net other comprehensive (loss) income	(1,707)		1		1		3		(1,702)
Balance as at June 30, 2025	$	1,678	$	11	$	(736)	$	(2)	$	951
Opening balance, April 1, 2024	$	1,522	$	6	$	(1,454)	$	3	$	77
Other comprehensive income (loss) before reclassifications	294		—		—		(2)		292
Amounts reclassified from AOCI	—		2		8		—		10
Net other comprehensive income (loss)	294		2		8		(2)		302
Balance as at June 30, 2024	$	1,816	$	8	$	(1,446)	$	1	$	379

	Foreign currency net of hedging activities		Derivatives		Pension and post- retirement defined benefit plans		Equity accounted investments		Total
Opening balance, January 1, 2025	$	3,413	$	10	$	(738)	$	(5)	$	2,680
Other comprehensive loss before reclassifications	(1,735)		—		—		3		(1,732)
Amounts reclassified from AOCI	—		1		2		—		3
Net other comprehensive (loss) income	(1,735)		1		2		3		(1,729)
Balance as at June 30, 2025	$	1,678	$	11	$	(736)	$	(2)	$	951
Opening balance, January 1, 2024	$	837	$	5	$	(1,463)	$	3	$	(618)
Other comprehensive income (loss) before reclassifications	979		—		—		(2)		977
Amounts reclassified from AOCI	—		3		17		—		20
Net other comprehensive income (loss)	979		3		17		(2)		997
Balance as at June 30, 2024	$	1,816	$	8	$	(1,446)	$	1	$	379