Contingencies and Commitments - Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Right-of-use assets	$ 489		$ 473
Lease liabilities, current	132		121
Lease liabilities, non-current	$ 367		$ 357
Other information:
Weighted-average remaining lease term (years)	5 years 3 months 18 days		5 years 6 months
Weighted-average discount rate	3.40%		3.22%
Operating lease cost	$ 38	$ 31