Changes in Accumulated Other Comprehensive Loss by Component (Tables)

3 Months Ended

Mar. 31, 2021

Schedule of Changes in Accumulated Other Comprehensive Loss by Component

The following table presents the changes in Accumulated other comprehensive loss by component⁽¹⁾ for the three months ended March 31, 2021 and the year ended December 31, 2020:

	Net derivative gains (losses) on cash flow hedges			Pension items⁽²⁾			Post-retirement benefit items⁽²⁾			Foreign currency items			Total
	$			$			$			$			$
Balance at December 31, 2019		(5	)		(197	)		11			(202	)		(393	)
Natural gas swap contracts		1		N/A			N/A			N/A				1
Currency options		3		N/A			N/A			N/A				3
Foreign exchange forward contracts		23		N/A			N/A			N/A				23
Net loss	N/A				(21	)		(1	)	N/A				(22	)
Foreign currency items	N/A			N/A			N/A				63			63
Other comprehensive income (loss) before reclassifications		27			(21	)		(1	)		63			68
Amounts reclassified from Accumulated other comprehensive loss		12			11			(2	)		—			21
Net current period other comprehensive income (loss)		39			(10	)		(3	)		63			89
Balance at December 31, 2020		34			(207	)		8			(139	)		(304	)
Natural gas swap contracts		1		N/A			N/A			N/A				1
Currency options		1		N/A			N/A			N/A				1
Foreign exchange forward contracts		7		N/A			N/A			N/A				7
Foreign currency items	N/A			N/A			N/A				72			72
Other comprehensive income before reclassifications		9			—			—			72			81
Amounts reclassified from Accumulated other comprehensive loss		(2	)		5			—			—			3
Net current period other comprehensive income		7			5			—			72			84
Balance at March 31, 2021		41			(202	)		8			(67	)		(220	)

⁽¹⁾	All amounts are after tax. Amounts in parentheses indicate losses.

⁽²⁾	The projected benefit obligation is actuarially determined on an annual basis as of December 31.

Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss

The following table presents reclassifications out of Accumulated other comprehensive loss:

Details about Accumulated other comprehensive loss components	Amounts reclassified from Accumulated other comprehensive loss
	For the three months ended
	March 31, 2021			March 31, 2020
	$			$
Net derivative losses on cash flow hedge
Natural gas swap contracts ⁽¹⁾		—			(5	)
Currency options and forwards ⁽¹⁾		10			(4	)
Net investment hedge ⁽²⁾		(9	)		—
Total before tax		1			(9	)
Tax benefit		1			2
Net of tax		2			(7	)

Amortization of defined benefit pension items
Amortization of net actuarial loss ⁽³⁾		(2	)		(2	)
Discontinued operations		(4	)		—
Total before tax		(6	)		(2	)
Tax benefit		1			1
Net of tax		(5	)		(1	)

⁽¹⁾	These amounts are included in Cost of sales in the Consolidated Statements of Earnings (Loss) and Comprehensive Income (Loss).

⁽²⁾	These amounts are included in (Loss) earnings from discontinued operations, net of taxes in the Consolidated Statements of Earnings (Loss) and Comprehensive Income (Loss).

⁽³⁾	These amounts are included in the computation of net periodic benefit cost (see Note 6 “Pension Plans and Other Post-Retirement Benefit Plans” for more details).