Leases - Components of Lease Cost and Rent Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease cost	$ 211	$ 196	$ 203
Short-term rent expense	87	92	104
Variable lease cost	24	25	26
Sublease income	(5)	(5)	(6)
Total operating lease cost	317	308	327
Finance lease cost:
Amortization of ROU assets	13	9	10
Interest on finance lease liabilities	15	9	8
Total finance lease cost	$ 28	$ 18	$ 18