Business Segments - Revenue and Long-Lived Assets by Geographic Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Geographic Segments
Total revenue	$ 2,902	$ 2,512	$ 2,153
Property and equipment, net	236	204
U.S.
Geographic Segments
Total revenue	1,948	1,734	1,551
Property and equipment, net	196	163
Other
Geographic Segments
Total revenue	954	778	$ 602
Property and equipment, net	$ 40	$ 41