Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Franchise agreement, revenue recognition period (within)	13 years
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	$ 84	$ 68
Other Current Assets
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	15	4
Other Noncurrent Assets
Capitalized Contract Cost [Line Items]
Capitalized contract cost, net	$ 69	$ 64