Leases - Lessee Components of Lease Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finance lease expense:
Operating lease expense	$ 138	$ 156	$ 195
Minimum annual guaranteed rent in excess of concession fees, net	(9)	(2)	60
Property
Property leases
Operating lease expense	703	561	575
Variable lease expense	520	433	152
Sublease income	(5)	(6)	(6)
Total property lease expense	1,218	988	721
Finance lease expense:
Total vehicle lease expense	1,218	988	721
Buses and support vehicles
Property leases
Total property lease expense	170	197	231
Finance lease expense:
Amortization of ROU assets	29	37	33
Interest on lease liabilities	3	4	3
Total vehicle lease expense	$ 170	$ 197	$ 231