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Finance Cost and Income - Summary of Finance Cost and Income Included in Income Statement (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of finance income expense [line items] |  |  |  |  |
Finance cost - Interest income/(expense) | $ (3,696) | $ (3,588) |  | $ (3,674) |
Finance cost - Net interest on net defined benefit liabilities | (90) | (73) |  | (73) |
Finance cost - Accretion expense | (808) | (782) |  | (593) |
Finance cost - Other financial results | (1,214) | (1,349) |  | (871) |
Finance cost - Finance income/(cost) excluding exceptional items | (5,808) | (5,792) |  | (5,211) |
Finance cost - Exceptional finance income/(cost) | (325) | (22) |  | (829) |
Finance cost - Finance income/(cost) | (6,133) | (5,814) | [1] | (6,040) | [1]
Finance income - Interest income/(expense) | 565 | 294 |  | 113 |
Finance income - Net interest income on Brazilian tax credits | 168 | 168 |  | 118 |
Finance income - Other financial results | 42 | 352 |  | 200 |
Finance income - Finance income/(cost) excluding exceptional items | 775 | 814 |  | 431 |
Finance income - Exceptional finance income/(cost) | 256 | 851 |  |  |
Finance income - Finance income/(cost) | 1,031 | 1,665 | [1] | 431 | [1]
Net - Interest income/(expense) | (3,131) | (3,294) |  | (3,560) |
Net - Net interest on net defined benefit liabilities | (90) | (73) |  | (73) |
Net - Accretion expense | (808) | (782) |  | (593) |
Net - Net interest income on Brazilian tax credits | 168 | 168 |  | 118 |
Net - Other Financial results | (1,172) | (997) |  | (671) |
Net - Finance income/(cost) excluding exceptional items | (5,033) | (4,978) |  | (4,780) |
Net - Exceptional finance income/(cost) | (69) | 829 |  | (829) |
Net finance income/(cost) | $ (5,102) | $ (4,148) | [1] | $ (5,609) | [1]
[1] | As from 1 January 2023, mark-to-market gains/(losses) on derivatives related to the hedging of the share-based payment programs are reported in the exceptional net finance income/(cost). The 2021 and 2022 presentation were amended to conform to the 2023 presentation.

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