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Business Combinations - Summary of Unaudited Pro Forma Historical Results (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Business Combinations [Abstract] |  |
Total revenues | $ 11,766.9 | $ 10,458.0
Net earnings attributable to controlling interests | $ 1,457.0 | $ 963.1
Basic net earnings per share | $ 6.61 | $ 4.47
Diluted net earnings per share | $ 6.48 | $ 4.38

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