Revenue Recognition Accounting Policy (Details 2) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Dec. 31, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue		$ 440	$ 444
Revenue recognized that was included in unamortized upfront fees received from franchisees at the beginning of the period		(20)
Increase for upfront fees associated with contracts that became effective during the period, net of amounts recognized as revenue during the period		19
Foreign Currency Gain (Loss) and Refranchising Gain (Loss) [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Other	[1]	$ (3)

[1] Primarily includes impact of foreign currency translation.