Business Combinations - Unaudited Pro Forma Results (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024
Business Combinations [Abstract]
Total revenues	$ 2,701	$ 2,471
Net income	$ 565	$ 555
Net income per share:
Basic	$ 1.97	$ 1.97
Diluted	$ 1.95	$ 1.96

Amount, after tax, of pro forma income (loss) of combined entity as if acquisition date of business combination occurred as of beginning of period.

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