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