Summary of Significant Accounting Policies (Details 2) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2018 weeks	Sep. 30, 2018 weeks	Dec. 31, 2018 USD ($) Months Years	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Fiscal Period Adjustment [Line Items]
Goodwill Written Off Related To Sale Of Business Unit Years From Acquisition			2
Week added as a result of the fiscal year ending on last Saturday in December			53
Frequency of adding a week as a result of the fiscal year ending on the last Saturday in December			five or six
Number of weeks in each of the first three quarters of each fiscal year | weeks	16	12
Number of weeks in the fourth quarter of each fiscal year with 52 weeks | weeks	16
Number of weeks in the fourth quarter of each fiscal year with 53 weeks | weeks	17
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
Revenues | $			$ 5,688		$ 6,356
Operating Profit | $			$ 2,296	$ 2,761	1,682
Fair Value Goodwill Written Off Related To Sale Of Business Unit Minimum Years Refranchised			2
Number of years notes receivable and direct financing leases are beyond and would be included in other assets			1
Number of years notes receivable and direct financing leases are due within and would be included in accounts and notes receivable			1
Number Of Consecutive Years Used As Primary Indicator Of Potential Impairment Of Restaurant Assets			2
53rd Week Impact [Member]
Fiscal Period Adjustment [Line Items]
Revenues | $					76
Operating Profit | $					$ 28