Intangible Assets - Amortization Expense (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) Years	Mar. 31, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense	$ 24	$ 23
The number of succeeding years for which amortization expense is disclosed | Years	4
Amortization expense for the remainder of the Year	$ 68
Amortization expense for Year One	89
Amortization expense for Year Two	89
Amortization expense for Year Three	89
Amortization expense for Year Four	89
Amortization expense Thereafter	720
Amortizable—Franchise agreements (a)
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense	17	17
Amortizable—Customer relationships (d)
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense	5	6
Amortizable—Other (f)
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense	$ 2	$ 0