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Revenue Recognition Accounting Policy (Details 2) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue $ 426 $ 421
Revenue recognized that was included in unamortized upfront fees received from franchisees at the beginning of the period (38)  
Increase for upfront fees associated with contracts that became effective during the period, net of amounts recognized as revenue during the period 42  
Foreign Currency Gain (Loss) and Refranchising Gain (Loss) [Member]    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Other [1] $ 1  
[1] Primarily includes impact of foreign currency translation.