Revenues - Schedule of Revenues Disaggregated by Geographic Area (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 1,258	$ 1,116
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	1,099	999
U.K.
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	131	98
Ireland
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	12	11
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	9	5
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenues	$ 7	$ 3