Revenues - Schedule of Revenues Disaggregated by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 5,902	$ 4,805	$ 4,257
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	5,059	4,140	3,730
U.K.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	599	545	433
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 244	$ 120	$ 94