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Investment in Associates - Summary of Investments in Associates (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of associates and joint ventures [line items] |  |  |  |
Beginning balance |  | $ 77 |  |
Share of profits/(losses) |  | 59 | $ 8 | $ 14
Ending balance |  | 36 | 77 |
Investments accounted for using equity method |  | 36 | 77 |
Cost [member] |  |  |  |
Disclosure of associates and joint ventures [line items] |  |  |  |
Beginning balance |  | 132 | 136 |
Additions |  | 1 | 4 |
Share of profits/(losses) | [1] | (41) | (8) |
System Fund share of losses |  | (1) | (2) |
Dividends and distributions |  | (1) |  |
Exchange and other adjustments |  | (1) | 2 |
Ending balance |  | 89 | 132 | 136
Accumulated impairment [member] |  |  |  |
Disclosure of associates and joint ventures [line items] |  |  |  |
Beginning balance |  | (55) | (55) |
Impairment reversal |  | 2 |  |
Ending balance |  | (53) | (55) | $ (55)
Material associates [Member] |  |  |  |
Disclosure of associates and joint ventures [line items] |  |  |  |
Investments accounted for using equity method |  |  | 42 |
Other associates [Member] |  |  |  |
Disclosure of associates and joint ventures [line items] |  |  |  |
Investments accounted for using equity method |  | $ 36 | $ 35 |
[1] | In 2022, comprises $42m losses presented as exceptional (note 6) and $1m share of profits from other associates. The total share of losses in the Group income statement includes a further $18m recognised as a liability within other payables (note 19).

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- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2022-03-24 -Paragraph 24 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_24_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 54 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_54_e&doctype=Standard -URIDate 2022-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2022-03-24 -Paragraph B16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2022-en-r&anchor=para_B16&doctype=Appendix&subtype=B -URIDate 2022-03-24 + Details
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- Definition The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries reported in separate financial statements] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2022-03-24 -Paragraph 10 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2022-en-r&anchor=para_10&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The entity's share of the profit (loss) of associates and joint ventures accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method; Joint ventures [member]; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2022-03-24 -Paragraph 28 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_28_e&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2022-03-24 -Paragraph 23 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_23_g&doctype=Standard -URIDate 2022-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective on first application of IFRS 9 -Name IFRS -Number 4 -IssueDate 2022-03-24 -Paragraph 39M -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2022-en-b&anchor=para_39M_b&doctype=Standard -URIDate 2022-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 82 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_82_c&doctype=Standard -URIDate 2022-03-24 + Details
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