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Equity - Summary of Equity Share Capital (Detail) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of classes of share capital [line items] |  |  |  |  |
Number of shares beginning balance | 183 |  | 187 |  | 187
Beginning balance | $ (1,608) | [1] | $ (1,474) |  | $ (1,849)
Repurchased and cancelled under share repurchase programme | (11) |  | (4) |  |
Number of shares ending balance | 172 |  | 183 |  | 187
Ending balance | $ (1,946) |  | $ (1,608) | [1] | $ (1,474)
Nominal value [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Beginning balance | 46 |  | 53 |  | 53
Exchange adjustments | 3 |  | (6) |  |
Repurchased and cancelled under share repurchase programme | (3) |  | (1) |  |
Ending balance | 46 |  | 46 |  | 53
Share premium [Member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Beginning balance | 91 |  | 101 |  | 103
Exchange adjustments | 4 |  | (10) |  | (2)
Repurchased and cancelled under share repurchase programme | 0 |  |  |  |
Ending balance | 95 |  | 91 |  | 101
Equity share capital [member] |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Beginning balance | 137 |  | 154 |  | 156
Exchange adjustments | 7 |  | (16) |  | (2)
Repurchased and cancelled under share repurchase programme | (3) |  | (1) |  |
Ending balance | $ 141 |  | $ 137 |  | $ 154
[1] | Re-presented for the adoption of IFRS 17 ‘Insurance Contracts’ (see New accounting standards and other presentational changes).

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