Revenue Recognition Accounting Policy (Details 4) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue	$ 394		$ 394		$ 392
Revenues	1,368	$ 1,448	2,739	$ 2,865
1 year [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue, Revenue Recognized	58		58
2 years [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue, Revenue Recognized	53		53
3 years [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue, Revenue Recognized	49		49
4 years [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue, Revenue Recognized	45		45
5 years [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue, Revenue Recognized	40		40
Thereafter 5 years [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred Revenue, Revenue Recognized	149		149
Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	512	909	1,024	1,811
Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	584	539	1,168	1,054
Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	272	0	547	0
UNITED STATES | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	279		552
UNITED STATES | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	238		474
UNITED STATES | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	159		317
China Division [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	64		134
Other, Outside the U.S. and China [Member] | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	233		472
Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	282		560
Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	113		230
Pizza Hut Global Division [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	233	222	484	456
Pizza Hut Global Division [Member] | UNITED STATES | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	11		25
Pizza Hut Global Division [Member] | UNITED STATES | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	64		134
Pizza Hut Global Division [Member] | UNITED STATES | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	60		125
Pizza Hut Global Division [Member] | China Division [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	15		31
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	7		17
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	61		124
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	15		28
Taco Bell Global Division [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	484	456	946	907
Taco Bell Global Division [Member] | UNITED STATES | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	252		494
Taco Bell Global Division [Member] | UNITED STATES | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	129		251
Taco Bell Global Division [Member] | UNITED STATES | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	97		188
Taco Bell Global Division [Member] | China Division [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	0		0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	1		2
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	5		11
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	0		0
KFC Global Division [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	651	$ 770	1,309	$ 1,502
KFC Global Division [Member] | UNITED STATES | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	16		33
KFC Global Division [Member] | UNITED STATES | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	45		89
KFC Global Division [Member] | UNITED STATES | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	2		4
KFC Global Division [Member] | China Division [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	49		103
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	225		453
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	216		425
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenues	$ 98		$ 202