Contingencies and Commitments - Leases (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Right-of-use assets	$ 510		$ 510		$ 494
Lease liabilities, current	143		143		143
Lease liabilities, non-current	$ 379		$ 379		$ 356
Other information:
Weighted-average remaining lease term (years)	5 years 2 months 12 days		5 years 2 months 12 days		5 years 6 months
Weighted-average discount rate	3.95%		3.95%		3.87%
Operating lease cost	$ 50	$ 41	$ 97	$ 79