Capital - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions		3 Months Ended	6 Months Ended
Nov. 01, 2023	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disclosure Of Share Capital [Line Items]
Shares repurchased		1.8	0.0	4.1
Potential repurchase of common shares	1,000.0
Share repurchases		$ 287		$ 639

The increase (decrease) in the number of shares outstanding. [Refer: Number of shares outstanding]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iv&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration