Leases - Summary of As a lessor (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Not later than one year [member]
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	$ 42	$ 52
Later than one year and not later than five years [member]
Disclosure of maturity analysis of operating lease payments [line items]
Undiscounted operating lease payments to be received	$ 3	$ 33

The amount of undiscounted operating lease payments to be received. Operating lease is a lease that does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2021-01-01
-Paragraph 97
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_97&doctype=Standard
-URIDate 2021-03-24

Name:	ifrs-full_UndiscountedOperatingLeasePaymentsToBeReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant