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Equity - Summary of Shares Held By Employee Share Trusts (Detail) - USD ($) shares in Millions, $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of classes of share capital [abstract] |  |  |
Number of shares | 1.2 | 0.8 | 1.1
Carrying value | $ 63.0 | $ 35.0 | $ 37.0
Market value | $ 144.9 | $ 73.6 | $ 62.8

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- Definition Shares held in employee trust , market value. + References No definition available. + Details
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