Financial Statement Presentation (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018 weeks operating_segments Months restaurants countries_and_territiories	Jan. 01, 2018 USD ($)
Number of Reportable Segments | operating_segments	3
Number of Countries in which Entity Operates | countries_and_territiories	140
Number of Stores | restaurants	45,000
Percent Of System Units Located Outside United States	60.00%
Fiscal Period Weeks Standard for U.S. subsidiaries and certain international subsidiaries	12
Fiscal Period Weeks Standard Fourth Quarter	16
Number of weeks in a standard year	52
Fiscal Period Weeks Standard Fourth Quarter of a 53rd Week Year for U.S. subsidiaries and certain international subsidiaries	17
Number of weeks in a 53rd week year	53
Fiscal period months standard first quarter | Months	2
Fiscal period months standard second and third quarters | Months	3
Fiscal period months standard fourth quarter | Months	4
Accounting Standards Update 2016-16 [Member] | Other Assets [Member]
Write-off of unamortized tax consequence of certain historical intra-entity transfers of assets | $		$ (30)
Accounting Standards Update 2018-02 [Member]
Reclassification from accumulated other comprehensive (income) loss to accumulated deficit for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017 | $		$ 19