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Business Combinations - Summary of Unaudited Pro Forma Historical Results (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Business Combination [Abstract]
Total revenues	$ 4,765	$ 3,740
Net earnings attributable to controlling interests	$ 822	$ 706
Basic net earnings per share (in dollars per share)	$ 3.20	$ 2.77
Diluted net earnings per share (in dollars per share)	$ 3.16	$ 2.72

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