Leases - Components of Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 64	$ 66	$ 42
Variable lease cost	27	27	25
Sublease income	(48)	(50)	(33)
Total operating lease costs, net	43	43	34
Cash paid for amounts included in the measurement of operating lease liabilities	50	70	71
ROU assets recognized for new operating lease liabilities	$ 1	$ 65	$ 337