Reportable Operating Segments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 1,486	$ 1,263
Operating Profit	543	250
General and Administrative Expense	206	208
Company restaurant expenses	(392)	(298)
Franchise and property expenses	23	58
Refranchising (gain) loss	(15)	(13)
Other (income) expense	6	(152)
Investment (income) expense, net	0	34
Other pension income (expense)	(3)	(3)
Interest Income (Expense), Net	(131)	(118)
Income Before Income Taxes	409	95
Interest Expense, Debt	12
GrubHub Inc. [Member]
Segment Reporting Information [Line Items]
Investment Income, Investment Expense		22
KFC Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	625	566
Operating Profit	300	224
Pizza Hut Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	251	235
Operating Profit	102	76
Taco Bell Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	488	453
Operating Profit	178	144
Habit Division [Member]
Segment Reporting Information [Line Items]
Revenues	122	9
Operating Profit	0	(2)
Unallocated [Member]
Segment Reporting Information [Line Items]
General and Administrative Expense	50	50
Company restaurant expenses	0	(1)
Franchise and property expenses	0	2
Refranchising (gain) loss	(15)	(13)
Other (income) expense	$ (2)	$ (152)