Leases - Components of Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease cost	$ 66	$ 42	$ 49
Variable lease cost	27	25	33
Sublease income	(50)	(33)	(39)
Total operating lease costs, net	43	34	43
Cash paid for amounts included in the measurement of operating lease liabilities	70	71	79
ROU assets recognized for new operating lease liabilities	$ 65	$ 337	$ 2