Earnings Per Share - Summary of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings per share [abstract]
Net profit / (loss)	$ 2,228	$ 26	$ (1,004)
Average number of shares outstanding	392,719,453	392,792,602	392,555,569
Basic and diluted earnings per share	$ 5.67	$ 0.07	$ (2.56)

The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 33
-IssueDate 2022-03-24
-Paragraph 70
-Subparagraph b
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-URIDate 2022-03-24

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