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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, 2021 | Dec. 31, 2020
Business Combinations [Abstract] |  |
Total revenues | $ 9,065.5 | $ 7,979.4
Net earnings attributable to controlling interests | $ 1,004.2 | $ 881.8
Basic net earnings per share | $ 4.84 | $ 4.36
Diluted net earnings per share | $ 4.74 | $ 4.27

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