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Classification and measurement of financial instruments - Summary of Fair Value Measurement Hierarchy of Assets and Liabilities (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Liabilities |  |
Loans and other borrowings | $ 3,274 | $ 3,166
EUR500m 1.625% bonds 2024 [member] |  |
Liabilities |  |
Loans and other borrowings | 0 | 555
GBP300m 3.75% bonds 2025 [member] |  |
Liabilities |  |
Loans and other borrowings | 381 | 387
GBP350m 2.125% bonds 2026 [member] |  |
Liabilities |  |
Loans and other borrowings | 441 | 449
EUR500m 2.125% bonds 2027 [member] |  |
Liabilities |  |
Loans and other borrowings | 526 | 559
GBP400m 3.375% bonds 2028 [member] |  |
Liabilities |  |
Loans and other borrowings | 502 | 509
EUR600m 4.375% bonds 2029 [member] |  |
Liabilities |  |
Loans and other borrowings | 623 | 663
EUR750m 3.625% bonds 2031 [member] |  |
Liabilities |  |
Loans and other borrowings | 784 |
Fair value [member] | EUR500m 1.625% bonds 2024 [member] |  |
Liabilities |  |
Loans and other borrowings | 0 | 545
Fair value [member] | GBP300m 3.75% bonds 2025 [member] |  |
Liabilities |  |
Loans and other borrowings | 373 | 373
Fair value [member] | GBP350m 2.125% bonds 2026 [member] |  |
Liabilities |  |
Loans and other borrowings | 418 | 416
Fair value [member] | EUR500m 2.125% bonds 2027 [member] |  |
Liabilities |  |
Loans and other borrowings | 513 | 535
Fair value [member] | GBP400m 3.375% bonds 2028 [member] |  |
Liabilities |  |
Loans and other borrowings | 471 | 476
Fair value [member] | EUR600m 4.375% bonds 2029 [member] |  |
Liabilities |  |
Loans and other borrowings | 658 | $ 689
Fair value [member] | EUR750m 3.625% bonds 2031 [member] |  |
Liabilities |  |
Loans and other borrowings | $ 786 |

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