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Capital risk management and fair value measurements (Tables) | 9 Months Ended
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Sep. 30, 2025
Capital risk management and fair value measurements |
Schedule of fair value estimation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At September 30, 2025 | ​ | At December 31, 2024
​ | ​ | Carrying | ​ | Fair | ​ | Carrying | ​ | Fair
​ |  | value |  | value |  | value |  | value
​ | ​ | $'m | ​ | $'m | ​ | $'m | ​ | $'m
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Financial liabilities | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Borrowings (note 15) |  | 3,270.7 | ​ | 3,322.1 |  | 3,347.9 |  | 3,342.6

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- Definition Tabular disclosure of fair value estimation. + References No definition available. + Details
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