Business Combinations - Summary of Unaudited Pro Forma Historical Results (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Business Combinations [Abstract]
Total revenues	$ 2,048.5	$ 1,953.8	$ 4,501.8	$ 4,137.2
Net earnings attributable to controlling interests	$ 284.5	$ 190.8	$ 723.1	$ 572.5
Basic net earnings per share	$ 1.35	$ 0.95	$ 3.45	$ 2.89
Diluted net earnings per share	$ 1.33	$ 0.93	$ 3.38	$ 2.83