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Related party disclosures (Tables) | 12 Months Ended
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Dec. 31, 2024
Disclosure [Abstract] |
Summary of Total Compensation of Key Management Personnel | Key management personnel
Total compensation |  |  |  | 2024 $m |  |  |  |  | 2023 $m |  |  |  |  |  | 2022 $m |
Short-term employment benefits |  |  |  |  | 20.1 |  |  |  |  |  | 18.6 |  |  |  |  |  |  |  | 18.7 |
Contributions to defined contribution pension plans |  |  |  |  | 0.4 |  |  |  |  |  | 0.5 |  |  |  |  |  |  |  | 0.5 |
Equity compensation benefits a |  |  |  |  | 16.4 |  |  |  |  |  | 15.8 |  |  |  |  |  |  |  | 13.4 |
|  |  |  |  | 36.9 |  |  |  |  |  | 34.9 |  |  |  |  |  |  |  | 32.6 |
a. | As measured in accordance with IFRS 2 ‘Share-based Payment’.
Summary of Related Party Disclosures for Associates and Joint Ventures | Associates and joint ventures
|  |  |  | 2024 $m |  |  |  |  | 2023 $m |  |  |  |  |  | 2022 $m |
Fee revenue |  |  |  |  | 12 |  |  |  |  |  | 11 |  |  |  |  |  |  |  | 9 |
Amounts receivable (net) |  |  |  |  | 41 |  |  |  |  |  | 19 |  |  |  |  |  |  |  | 10 |
Amounts payable |  |  |  |  | – |  |  |  |  |  | (10 | ) |  |  |  |  |  |  | – |

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- Definition The disclosure of information about key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 10 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_10_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The disclosure of transactions between the entity and its related parties. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 18 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_18&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Disclosure text block [abstract] + References No definition available. + Details
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