Other Income, Net (Parenthetical) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2018	Dec. 31, 2018
Other Operating Income (Expense), Net
Gain from re-measurement of previously held ownership interest at fair value	[1]		$ 98
Wuxi KFC [Member]
Other Operating Income (Expense), Net
Gain from re-measurement of previously held ownership interest at fair value		$ 98
Ownership interest previously held		47.00%

[1] As a result of the acquisition of Wuxi KFC in the first quarter of 2018, as disclosed in Note 5, the Company recognized a gain of $98 million from the re-measurement of our previously held 47% equity interest at fair value, which was not allocated to any segment for performance reporting purposes.