Segment Information - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) Segment	Jun. 30, 2024 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment			3
Revenues	$ 1,285	$ 1,178	$ 2,689	$ 2,435
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]			srt:ChiefExecutiveOfficerMember, srt:PresidentMember
England, Bermuda, Cayman, Islands and The Republic of Ireland
Segment Reporting Information [Line Items]
Revenues	$ 212	$ 172	$ 442	$ 330