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

9 Months Ended

Sep. 30, 2024

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

Changes in Accumulated Other Comprehensive Income (Loss) by Component

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

	For the three months ended September 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, July 1, 2024	$	1,816	$	8	$	(1,446)	$	1	$	379
Other comprehensive loss before reclassifications	(412)		—		—		(5)		(417)
Amounts reclassified from AOCL	—		1		9		—		10
Net other comprehensive (loss) income	(412)		1		9		(5)		(407)
Closing balance, September 30, 2024	$	1,404	$	9	$	(1,437)	$	(4)	$	(28)
Opening balance, July 1, 2023	$	857	$	2	$	(1,406)	$	3	$	(544)
Other comprehensive income before reclassifications	603		—		—		—		603
Amounts reclassified from AOCI	—		1		6		—		7
Net other comprehensive income	603		1		6		—		610
Closing balance, September 30, 2023	$	1,460	$	3	$	(1,400)	$	3	$	66

	For the nine months ended September 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	567		—		—		(7)		560
Amounts reclassified from AOCL	—		4		26		—		30
Net other comprehensive income (loss)	567		4		26		(7)		590
Closing balance, September 30, 2024	$	1,404	$	9	$	(1,437)	$	(4)	$	(28)
Opening balance, January 1, 2023	$	1,505	$	—	$	(1,410)	$	(4)	$	91
Other comprehensive (loss) income before reclassifications	(45)		—		(9)		6		(48)
Amounts reclassified from AOCI	—		3		19		1		23
Net other comprehensive (loss) income	(45)		3		10		7		(25)
Closing balance, September 30, 2023	$	1,460	$	3	$	(1,400)	$	3	$	66