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Long-Term Employee Benefit Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Long-Term Employee Benefit Liabilities

Long-term employee benefit liabilities consist of:

		2020				2019
Defined benefit pension plans and other [a]		$	216			$	203
Termination and long-term service arrangements [b]			468				437
Retirement medical benefits plans [c]			29				27
Other long-term employee benefits			16				10
Long-term employee benefit obligations		$	729			$	677

Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost

The weighted average significant actuarial assumptions adopted in measuring the Company’s obligations and costs are as follows:

		2020				2019
Projected benefit obligation
Discount rate			2.1	%			2.5	%
Rate of compensation increase			2.4	%			2.6	%
Net periodic benefit cost
Discount rate			2.8	%			3.2	%
Rate of compensation increase			2.4	%			2.6	%
Expected return on plan assets			4.6	%			4.9	%

Schedule of Company's Defined Benefit Pension Plans

Information about the Company’s defined benefit pension plans is as follows:

		2020				2019
Projected benefit obligation
Beginning of year		$	659			$	633
Current service cost			10				11
Interest cost			17				20
Actuarial losses and changes in actuarial assumptions			43				79
Benefits paid			(23	)			(21	)
Divestiture			—				(68	)
Foreign exchange			25				5
End of year			731				659
Plan assets at fair value [i]
Beginning of year			478				406
Return on plan assets			42				78
Employer contributions			9				11
Benefits paid			(18	)			(17	)
Divestiture			—				(10	)
Foreign exchange			6				10
End of year			517				478
Ending funded status – Plan deficit		$	214			$	181
Amounts recorded in the consolidated balance sheet
Non-current asset [note 12]		$	(4	)		$	(23	)
Current liability			2				1
Non-current liability			216				203
Net amount		$	214			$	181
Amounts recorded in accumulated other comprehensive income
Unrecognized actuarial losses		$	(158	)		$	(141	)
Net periodic benefit cost
Current service cost		$	10			$	11
Interest cost			17				20
Return on plan assets			(21	)			(19	)
Actuarial losses			5				4
Net periodic benefit cost		$	11			$	16

[i] The asset allocation of the Company’s defined benefit pension plans at December 31, 2020 and the target allocation for 2021 is as follows:

		2021				2020
Fixed income securities			55-75	%			58	%
Equity securities			25-45	%			37	%
Cash and cash equivalents			0-10	%			5	%
			100	%			100	%

Future Benefit Payments

[d] Future benefit payments

		Defined benefit pension plans				Termination and long service arrangements				Retirement medical benefits plans				Total
Expected employer contributions - 2021		$	13			$	10			$	1			$	24
Expected benefit payments:
2021		$	24			$	10			$	1			$	35
2022			25				11				1				37
2023			25				13				1				39
2024			26				15				2				43
2025			27				21				2				50
Thereafter			151				124				8				283
		$	278			$	194			$	15			$	487

Termination and Long-term Service Arrangements [Member]

Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost

The weighted average significant actuarial assumptions adopted in measuring the Company’s projected termination and long-term service benefit obligations and net periodic benefit cost are as follows:

		2020				2019
Discount rate			2.1	%			2.1	%
Rate of compensation increase			3.1	%			3.1	%

Schedule of Company's Defined Benefit Pension Plans

Information about the Company’s termination and long-term service arrangements is as follows:

		2020				2019
Projected benefit obligation
Beginning of year		$	446			$	394
Current service cost			32				29
Interest cost			8				10
Actuarial (gains) losses and changes in actuarial assumptions			(13	)			39
Benefits paid			(27	)			(19	)
Divestiture			—				(3	)
Foreign exchange			32				(4	)
Ending funded status – Plan deficit		$	478			$	446
Amounts recorded in the consolidated balance sheet
Current liability		$	10			$	9
Non-current liability			468				437
Net amount		$	478			$	446
Amounts recorded in accumulated other comprehensive income
Unrecognized actuarial losses		$	(106	)		$	(124	)
Net periodic benefit cost
Current service cost		$	32			$	29
Interest cost			8				10
Actuarial losses			6				4
Net periodic benefit cost		$	46			$	43

Retirement Medical Benefits Plans [Member]

Summary of Weighted Average Significant Actuarial Assumptions Adopted in Measuring Company's Obligations and Cost

The weighted average discount rates used in measuring the Company’s projected retirement medical benefit obligations and net periodic benefit cost are as follows:

		2020				2019
Retirement medical benefit obligations			2.4	%			3.1	%
Net periodic benefit cost			3.1	%			4.0	%
Health care cost inflation			6.6	%			6.8	%

Schedule of Company's Defined Benefit Pension Plans

Information about the Company’s retirement medical benefits plans are as follows:

		2020				2019
Projected benefit obligation
Beginning of year		$	29			$	29
Interest cost			1				1
Actuarial losses and changes in actuarial assumptions			1				—
Benefits paid			(1	)			(1	)
Ending funded status – Plan deficit		$	30			$	29
Amounts recorded in the consolidated balance sheet
Current liability		$	1			$	2
Non-current liability			29				27
Net amount		$	30			$	29
Amounts recorded in accumulated other comprehensive income
Unrecognized actuarial gains			6				11
Total accumulated other comprehensive income		$	6			$	11
Net periodic benefit cost
Interest cost		$	1			$	1
Actuarial gains			(1	)			(1	)
Net periodic benefit cost		$	—			$	—

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