Events after the reporting period (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
Jun. 12, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure Of Nonadjusting Events After Reporting Period [Line Items]
Basic earnings per share		$ 1.59	$ 8.68	$ 2.34
Diluted earnings per share		$ 1.52	$ 8.30	$ 2.25
Credit Suisse
Disclosure Of Nonadjusting Events After Reporting Period [Line Items]
Provisional negative goodwill resulting from the acquisition	$ 27,264		$ 27,264

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator), divided by the weighted average number of ordinary shares outstanding during the period (the denominator), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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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 amount of any gain recognised in a business combination in which the net of the identifiable assets acquired and the liabilities assumed exceeds the aggregate of the consideration transferred, non-controlling interest in the acquiree and fair value of the acquirer's previously held equity interest in the acquiree. [Refer: Total for all business combinations [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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