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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, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Movement in net debt |  |  |  |
Net decrease in cash and cash equivalents, net of overdrafts |  | $ (393) | $ (236) | $ 1,430
Add back financing cash flows in respect of other components of net debt: |  |  |  |
Principal element of lease payments |  | 36 | 32 | 65
Repayment of £600m commercial paper | [1] |  | 828 |
Repayment of long-term bonds |  | 209 |  | 290
Total financing cash flows in respect of other components of net debt |  | 245 | 860 |
(Increase)/decrease in net debt arising from cash flows |  | (148) | 624 |
Other movements: |  |  |  |
Lease liabilities |  | (48) | (7) |
Increase in accrued interest |  | (1) | (1) |
Disposals |  |  | 3 |
Exchange and other adjustments |  | 227 | 29 |
Total other movements |  | 178 | 24 |
Decrease in net debt |  | 30 | 648 |
Net debt at beginning of the year |  | (1,881) | (2,529) |
Net debt at end of the year |  | $ (1,851) | $ (1,881) | $ (2,529)
[1] | Under the UK Government’s Covid Corporate Financing Facility (‘CCFF’).

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- Definition The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2022-03-24 -Paragraph 17 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2022-en-r&anchor=para_17_e&doctype=Standard -URIDate 2022-03-24 + Details
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