Changes in Accumulated Other Comprehensive Loss ("AOCL") by Component (Tables)

3 Months Ended

Mar. 31, 2022

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

Changes in Accumulated Other Comprehensive Income Loss by Component

	For the three months ended March 31
(in millions of Canadian dollars)	Foreign currency net of hedging activities(1)		Derivatives(1)(2)		Pension and post- retirement defined benefit plans(1)		Equity accounted investments(1)(2)		Total(1)
Opening balance, January 1, 2022	$	(182)	$	(4)	$	(1,915)	$	(2)	$	(2,103)
Other comprehensive (loss) income before reclassifications	(349)		—		—		46		(303)
Amounts reclassified from accumulated other comprehensive loss	—		1		31		1		33
Net other comprehensive (loss) income	(349)		1		31		47		(270)
Closing balance, March 31, 2022	$	(531)	$	(3)	$	(1,884)	$	45	$	(2,373)
Opening balance, January 1, 2021	$	112	$	(40)	$	(2,878)	$	(8)	$	(2,814)
Other comprehensive income before reclassifications	—		17		—		—		17
Amounts reclassified from accumulated other comprehensive loss	—		2		39		—		41
Net other comprehensive income	—		19		39		—		58
Closing balance, March 31, 2021	$	112	$	(21)	$	(2,839)	$	(8)	$	(2,756)

(1)Amounts are presented net of tax.

(2) Comparative figures have been reclassified to conform with current period presentation.

Amounts in Pension and Post-retirement Defined Benefit Plans Reclassified from AOCL

Amounts in Pension and post-retirement defined benefit plans reclassified from AOCL are as follows:

	For the three months ended March 31
(in millions of Canadian dollars)	2022		2021
Recognition of net actuarial loss(1)	$	39	$	53
Income tax recovery	(8)		(14)
Total net of income tax	$	31	$	39

(1)Impacts "Other components of net periodic benefit recovery" on the Interim Consolidated Statements of Income.