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

6 Months Ended

Jun. 30, 2024

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

Changes in Accumulated Other Comprehensive Income (Loss) by Component

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

	For the three months ended June 30
(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, 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
Closing balance, June 30, 2024	$	1,816	$	8	$	(1,446)	$	1	$	379
Opening balance, April 1, 2023	$	1,478	$	1	$	(1,404)	$	(1)	$	74
Other comprehensive (loss) income before reclassifications	(621)		—		(9)		3		(627)
Amounts reclassified from AOCI	—		1		7		1		9
Net other comprehensive (loss) income	(621)		1		(2)		4		(618)
Closing balance, June 30, 2023	$	857	$	2	$	(1,406)	$	3	$	(544)

	For the six months ended June 30
(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, 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
Closing balance, June 30, 2024	$	1,816	$	8	$	(1,446)	$	1	$	379
Opening balance, January 1, 2023	$	1,505	$	—	$	(1,410)	$	(4)	$	91
Other comprehensive (loss) income before reclassifications	(648)		—		(9)		6		(651)
Amounts reclassified from AOCI	—		2		13		1		16
Net other comprehensive (loss) income	(648)		2		4		7		(635)
Closing balance, June 30, 2023	$	857	$	2	$	(1,406)	$	3	$	(544)