Pensions and Post-Employment Benefits - Aggregate Projected Benefit Obligation for Pension Plans and Other Post-employment Benefits and the Plan Assets by Country (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value of plan assets [line items]
PBO	$ 1,903	$ 2,783	$ 3,033
Assets	1,208	1,784	$ 1,694
Deficit	695	999
Mexico [member]
Disclosure of fair value of plan assets [line items]
PBO	220	200
Assets	25	38
Deficit	195	162
United States [member]
Disclosure of fair value of plan assets [line items]
PBO	194	270
Assets	166	226
Deficit	28	44
United Kingdom [member]
Disclosure of fair value of plan assets [line items]
PBO	1,062	1,794
Assets	791	1,273
Deficit	271	521
Germany [member]
Disclosure of fair value of plan assets [line items]
PBO	134	180
Assets	6	7
Deficit	128	173
Other countries [member]
Disclosure of fair value of plan assets [line items]
PBO	293	339
Assets	220	240
Deficit	$ 73	$ 99

The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 19
-IssueDate 2022-03-24
-Paragraph 57
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2022-en-r&anchor=para_57_a&doctype=Standard
-URIDate 2022-03-24

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]

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