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Net Debt - Summary of Movement in Net Debt (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Movement in net debt |  |  |
Net increase/(decrease) in cash and cash equivalents, net of overdrafts | $ (269) | $ 339 | $ (393)
Add back financing cash flows in respect of other components of net debt: |  |  |
Principal element of lease payments | 46 | 28 |
Issue of long-term bonds | (834) | (657) |
Repayment of long-term bonds | 547 | 0 | 209
Settlement of currency swaps | 45 | 0 |
Total financing cash flows in respect of other components of net debt | (196) | (629) |
Increase in net debt arising from cash flows | (465) | (290) |
Other movements: |  |  |
Lease liabilities | (36) | (25) |
Increase in accrued interest | (6) | (2) |
Exchange and other adjustments | (3) | (104) |
Total other movements | (45) | (131) |
(Increase)/decrease in net debt | (510) | (421) |
Net debt at beginning of the year | (2,272) | (1,851) |
Net debt at end of the year | $ (2,782) | $ (2,272) | $ (1,851)

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- Definition The increase (decrease) in cash and cash equivalents before the effect of exchange rate changes on cash and cash equivalents held in foreign currencies. [Refer: Cash and cash equivalents; Effect of exchange rate changes on cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 + Details
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