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Equity - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Feb. 01, 2024 | Dec. 29, 2023 | Feb. 01, 2023 | Jan. 31, 2023 | Aug. 09, 2022
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Authorised share capital | 0 |  |  |  |  |  |  |  |
Total return of funds announced to shareholders |  |  |  |  | $ 800 |  | $ 750 |  | $ 500
Reclassified from OCI to profit or loss - included in financial expenses | $ 28 | $ (43) | [1] | $ 96 |  |  |  |  |
Return of funds to shareholders completed |  |  |  |  |  | $ 750 |  | $ 500 |
Number of shares | 800,000 | 1,100,000 |  | 900,000 |  |  |  |  |
Transaction costs relating to treasury shares | $ 28 | $ 2 |  |  |  |  |  |  |
Increase (decrease) through share repurchase programme, Number of shares | 10,900,000 | 9,100,000 |  |  |  |  |  |  |
Repurchase of shares | $ 790 | $ 482 |  |  |  |  |  |  |
2022 programme [member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Repurchase of shares | 38 |  |  |  |  |  |  |  |
2023 programme [member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Repurchase of shares | 752 |  |  |  |  |  |  |  |
Cash flow hedge reserves [member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Reclassified from OCI to profit or loss - included in financial expenses | 28 | $ (43) |  | $ 96 |  |  |  |  |
Held as treasury shares [Member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Increase (decrease) through share repurchase programme, Number of shares |  | 4,500,000 |  |  |  |  |  |  |
Subsequently cancelled [Member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Increase (decrease) through share repurchase programme, Number of shares |  | 4,600,000 |  |  |  |  |  |  |
EUR bonds [member] | Cash flow hedge reserves [member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Reclassified from OCI to profit or loss - included in financial expenses | 14 | $ 14 |  | 15 |  |  |  |  |
Change in fair value of currency swaps recognised in OCI | $ (14) | $ 57 |  | $ (81) |  |  |  |  |
Nominee Account [Member] |  |  |  |  |  |  |  |  |
Disclosure of reserves within equity [line items] |  |  |  |  |  |  |  |  |
Number of shares | 200,000 | 200,000 |  |  |  |  |  |  |
[1] | In 2023, gains/(losses) on net investment hedges have been presented on a separate line. The 2022 amount was previously presented within ‘Exchange (losses)/gains on retranslation of foreign operations’.

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