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

3 Months Ended

Mar. 31, 2021

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

Changes in Accumulated Other Comprehensive Loss (AOCL) by Component

Changes in Accumulated other comprehensive loss ("AOCL") by component

	For the three months ended March 31
(in millions of Canadian dollars)	Foreign currency net of hedging activities(1)		Derivatives and other(1)		Pension and post- retirement defined benefit plans(1)		Total(1)
Opening balance, January 1, 2021	$	112	$	(48)	$	(2,878)	$	(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	$	(29)	$	(2,839)	$	(2,756)
Opening balance, January 1, 2020	$	112	$	(54)	$	(2,580)	$	(2,522)
Other comprehensive income before reclassifications	7		—		—		7
Amounts reclassified from accumulated other comprehensive loss	—		2		33		35
Net other comprehensive income	7		2		33		42
Closing balance, March 31, 2020	$	119	$	(52)	$	(2,547)	$	(2,480)

(1)Amounts are presented net of tax.

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)	2021		2020
Recognition of net actuarial loss(1)	$	53	$	45
Income tax recovery	(14)		(12)
Total net of income tax	$	39	$	33

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