Leases - Components of Lease Cost and Rent Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Operating lease cost	$ 53	$ 53	$ 108	$ 104
Short-term rent expense	22	21	44	44
Variable lease cost	6	5	12	9
Sublease income	(1)	(1)	(3)	(2)
Total operating lease cost	80	78	161	155
Finance lease cost:
Amortization of right-of-use assets	3	4	6	7
Interest on finance lease liabilities	3	4	7	8
Total finance lease cost	$ 6	$ 8	$ 13	$ 15