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

6 Months Ended

Jun. 30, 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 June 30
(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, April 1, 2021	$	112	$	(29)	$	(2,839)	$	(2,756)
Other comprehensive loss before reclassifications	(2)		(74)		—		(76)
Amounts reclassified from accumulated other comprehensive loss	—		2		39		41
Net other comprehensive (loss) income	(2)		(72)		39		(35)
Closing balance, June 30, 2021	$	110	$	(101)	$	(2,800)	$	(2,791)
Opening balance, April 1, 2020	$	119	$	(52)	$	(2,547)	$	(2,480)
Other comprehensive loss before reclassifications	(3)		(2)		—		(5)
Amounts reclassified from accumulated other comprehensive loss	—		2		33		35
Net other comprehensive (loss) income	(3)		—		33		30
Closing balance, June 30, 2020	$	116	$	(52)	$	(2,514)	$	(2,450)

(1)Amounts are presented net of tax.

	For the six months ended June 30
(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 loss before reclassifications	(2)		(57)		—		(59)
Amounts reclassified from accumulated other comprehensive loss	—		4		78		82
Net other comprehensive (loss) income	(2)		(53)		78		23
Closing balance, June 30, 2021	$	110	$	(101)	$	(2,800)	$	(2,791)
Opening balance, January 1, 2020	$	112	$	(54)	$	(2,580)	$	(2,522)
Other comprehensive income (loss) before reclassifications	4		(2)		—		2
Amounts reclassified from accumulated other comprehensive loss	—		4		66		70
Net other comprehensive income	4		2		66		72
Closing balance, June 30, 2020	$	116	$	(52)	$	(2,514)	$	(2,450)

(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 June 30				For the six months ended June 30
(in millions of Canadian dollars)	2021		2020		2021		2020
Recognition of net actuarial loss(1)	$	52	$	45	$	105	$	90
Income tax recovery	(13)		(12)		(27)		(24)
Total net of income tax	$	39	$	33	$	78	$	66

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