Summary of Significant Accounting Policies - Deferred Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Contract With Customer, Liability [Roll Forward]
Deferred lease revenues – current	$ 168	$ 188
Customer Loyalty
Disaggregation of Revenue [Line Items]
Term	12 months
Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 61	50
Revenue deferred	58	52
Revenue recognized	(52)	(41)
Ending balance	67	61
Deferred lease revenues – current	20	15
Contract with customer, liability, noncurrent	$ 47	$ 46
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Minimum
Contract With Customer, Liability [Roll Forward]
Revenue recognition period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01 | Maximum
Contract With Customer, Liability [Roll Forward]
Revenue recognition period	3 years