Revenue Recognition Accounting Policy (Details 2) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue	$ 419	$ 434
Revenue recognized that was included in unamortized upfront fees received from franchisees at the beginning of the period	(43)
Increase for upfront fees associated with contracts that became effective during the period, net of amounts recognized as revenue during the period	37
Foreign Currency Gain (Loss) and Refranchising Gain (Loss) [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Other	$ (9)