Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2020

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

Components of Other comprehensive (loss) income and related tax effects

The components of Other comprehensive loss and the related tax effects are as follows:

(in millions of Canadian dollars)	Before tax amount		Income tax (expense) recovery		Net of tax amount
For the year ended December 31, 2020
Unrealized foreign exchange (loss) gain on:
Translation of the net investment in U.S. subsidiaries	$	(118)	$	—	$	(118)
Translation of the U.S. dollar-denominated long-term debt designated as a hedge of the net investment in U.S. subsidiaries (Note 17)	136		(18)		118
Realized loss on derivatives designated as cash flow hedges recognized in income	9		(3)		6
Change in pension and other benefits actuarial gains and losses	(403)		108		(295)
Change in prior service pension and other benefit costs	(4)		1		(3)
Other comprehensive loss	$	(380)	$	88	$	(292)
For the year ended December 31, 2019
Unrealized foreign exchange (loss) gain on:
Translation of the net investment in U.S. subsidiaries	$	(251)	$	—	$	(251)
Translation of the U.S. dollar-denominated long-term debt designated as a hedge of the net investment in U.S. subsidiaries (Note 17)	288		(38)		250
Realized loss on derivatives designated as cash flow hedges recognized in income	10		(2)		8
Change in pension and other benefits actuarial gains and losses	(661)		175		(486)
Other comprehensive loss	$	(614)	$	135	$	(479)
For the year ended December 31, 2018
Unrealized foreign exchange gain (loss) on:
Translation of the net investment in U.S. subsidiaries	$	419	$	—	$	419
Translation of the U.S. dollar-denominated long-term debt designated as a hedge of the net investment in U.S. subsidiaries (Note 17)	(479)		64		(415)
Change in derivatives designated as cash flow hedges:
Realized loss on cash flow hedges recognized in income	10		(3)		7
Unrealized gain on cash flow hedges and other	28		(8)		20
Change in pension and other benefits actuarial gains and losses	(447)		115		(332)
Change in prior service pension and other benefit costs	(2)		1		(1)
Other comprehensive loss	$	(471)	$	169	$	(302)

Accumulated other comprehensive loss, Net of tax

The components of Accumulated other comprehensive loss, net of tax, are as follows:

(in millions of Canadian dollars)	2020		2019
Unrealized foreign exchange gain on translation of the net investment in U.S. subsidiaries	$	493	$	611
Unrealized foreign exchange loss on translation of the U.S. dollar-denominated long-term debt designated as a hedge of the net investment in U.S. subsidiaries	(381)		(499)
Net deferred losses on derivatives and other	(48)		(54)
Amounts for defined benefit pension and other post-retirement plans not recognized in income (Note 22)	(2,878)		(2,580)
Accumulated other comprehensive loss	$	(2,814)	$	(2,522)

Changes in Accumulated other comprehensive loss by component

Changes in Accumulated other comprehensive loss by component are as follows:

(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, 2020	$	112	$	(54)	$	(2,580)	$	(2,522)
Other comprehensive loss before reclassifications	—		(2)		(430)		(432)
Amounts reclassified from accumulated other comprehensive loss	—		8		132		140
Net other comprehensive income (loss)	—		6		(298)		(292)
Closing balance, December 31, 2020	$	112	$	(48)	$	(2,878)	$	(2,814)
Opening balance, January 1, 2019	$	113	$	(62)	$	(2,094)	$	(2,043)
Other comprehensive loss before reclassifications	(1)		—		(550)		(551)
Amounts reclassified from accumulated other comprehensive loss	—		8		64		72
Net other comprehensive (loss) income	(1)		8		(486)		(479)
Closing balance, December 31, 2019	$	112	$	(54)	$	(2,580)	$	(2,522)

(1) Amounts are presented net of tax.

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

Amounts in Pension and post-retirement defined benefit plans reclassified from Accumulated other comprehensive loss are as follows:

(in millions of Canadian dollars)	2020		2019
Amortization of prior service costs(1)	$	(1)	$	—
Recognition of net actuarial loss(1)	180		84
Total before income tax	179		84
Income tax recovery	(47)		(20)
Total net of income tax	$	132	$	64

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