Revenue Recognition Accounting Policy (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total Revenues	$ 1,448	$ 1,339	$ 3,909	$ 3,903
KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	586	609	1,561	1,759
Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	243	241	713	730
Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	501	489	1,403	1,414
Habit Division [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	118	0	232	0
UNITED STATES
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	15	17	46	52
UNITED STATES | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	4	5	11	16
UNITED STATES | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	1	2	4	5
UNITED STATES | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	10	10	31	31
UNITED STATES | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	0		0
Other, Outside the U.S. and China [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	18	17	44	52
Other, Outside the U.S. and China [Member] | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	17	16	42	50
Other, Outside the U.S. and China [Member] | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	1	1	2	2
Other, Outside the U.S. and China [Member] | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	0	0	0	0
Other, Outside the U.S. and China [Member] | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Operating Leases, Income Statement, Minimum Lease Revenue	0		0
Product [Member]
Disaggregation of Revenue [Line Items]
Revenues	486	364	1,244	1,056
Product [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	355	238	899	690
Product [Member] | UNITED STATES | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	14	17	43	51
Product [Member] | UNITED STATES | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	5	5	15	15
Product [Member] | UNITED STATES | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	218	216	610	624
Product [Member] | UNITED STATES | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	118		231
Product [Member] | Other, Outside the U.S. and China [Member]
Disaggregation of Revenue [Line Items]
Revenues	131	126	345	366
Product [Member] | Other, Outside the U.S. and China [Member] | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	116	118	303	344
Product [Member] | Other, Outside the U.S. and China [Member] | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	15	8	42	20
Product [Member] | Other, Outside the U.S. and China [Member] | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	2
Product [Member] | Other, Outside the U.S. and China [Member] | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Franchise [Member]
Disaggregation of Revenue [Line Items]
Revenues	639	645	1,760	1,890
Franchise [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	254	245	728	726
Franchise [Member] | UNITED STATES | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	44	40	126	119
Franchise [Member] | UNITED STATES | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	62	63	190	197
Franchise [Member] | UNITED STATES | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	148	142	411	410
Franchise [Member] | UNITED STATES | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		1
Franchise [Member] | CHINA
Disaggregation of Revenue [Line Items]
Revenues	71	73	187	211
Franchise [Member] | CHINA | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	56	57	150	165
Franchise [Member] | CHINA | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	15	16	37	46
Franchise [Member] | CHINA | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Franchise [Member] | CHINA | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Franchise [Member] | Other, Outside the U.S. and China [Member]
Disaggregation of Revenue [Line Items]
Revenues	281	293	755	849
Franchise [Member] | Other, Outside the U.S. and China [Member] | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	219	226	577	649
Franchise [Member] | Other, Outside the U.S. and China [Member] | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	55	61	160	181
Franchise [Member] | Other, Outside the U.S. and China [Member] | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	7	6	18	19
Franchise [Member] | Other, Outside the U.S. and China [Member] | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Advertising [Member]
Disaggregation of Revenue [Line Items]
Revenues	323	330	905	957
Advertising [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	197	187	568	557
Advertising [Member] | UNITED STATES | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	4	2	13	7
Advertising [Member] | UNITED STATES | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	76	71	224	223
Advertising [Member] | UNITED STATES | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	117	114	331	327
Advertising [Member] | UNITED STATES | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	0		0
Advertising [Member] | Other, Outside the U.S. and China [Member]
Disaggregation of Revenue [Line Items]
Revenues	126	143	337	400
Advertising [Member] | Other, Outside the U.S. and China [Member] | KFC Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	112	128	296	358
Advertising [Member] | Other, Outside the U.S. and China [Member] | Pizza Hut Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	13	14	39	41
Advertising [Member] | Other, Outside the U.S. and China [Member] | Taco Bell Global Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	1	$ 1	2	$ 1
Advertising [Member] | Other, Outside the U.S. and China [Member] | Habit Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0		$ 0