Revenue Recognition Accounting Policy (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues	$ 1,606	$ 1,448	$ 4,694	$ 3,909
Company Sales
Revenues	513	486	1,509	1,244
Franchise and property revenues
Revenues	716	639	2,080	1,760
Franchise contributions for advertising and other services
Revenues	377	323	1,105	905
UNITED STATES | Company Sales
Revenues	377	355	1,107	899
UNITED STATES | Franchise and property revenues
Revenues	266	254	798	728
UNITED STATES | Property Revenues
Revenues	16	15	45	46
UNITED STATES | Franchise contributions for advertising and other services
Revenues	207	197	618	568
CHINA | Franchise and property revenues
Revenues	77	71	229	187
Other, Outside the U.S. and China [Member] | Company Sales
Revenues	136	131	402	345
Other, Outside the U.S. and China [Member] | Franchise and property revenues
Revenues	341	281	962	755
Other, Outside the U.S. and China [Member] | Property Revenues
Revenues	16	18	46	44
Other, Outside the U.S. and China [Member] | Franchise contributions for advertising and other services
Revenues	170	126	487	337
KFC Global Division [Member]
Revenues	692	586	1,999	1,561
KFC Global Division [Member] | UNITED STATES | Company Sales
Revenues	15	14	45	43
KFC Global Division [Member] | UNITED STATES | Franchise and property revenues
Revenues	46	44	138	126
KFC Global Division [Member] | UNITED STATES | Property Revenues
Revenues	3	4	10	11
KFC Global Division [Member] | UNITED STATES | Franchise contributions for advertising and other services
Revenues	7	4	20	13
KFC Global Division [Member] | CHINA | Franchise and property revenues
Revenues	61	56	181	150
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Company Sales
Revenues	128	116	378	303
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise and property revenues
Revenues	265	219	750	577
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Property Revenues
Revenues	16	17	45	42
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise contributions for advertising and other services
Revenues	151	112	432	296
Pizza Hut Global Division [Member]
Revenues	247	243	747	713
Pizza Hut Global Division [Member] | UNITED STATES | Company Sales
Revenues	5	5	15	15
Pizza Hut Global Division [Member] | UNITED STATES | Franchise and property revenues
Revenues	63	62	197	190
Pizza Hut Global Division [Member] | UNITED STATES | Property Revenues
Revenues	2	1	4	4
Pizza Hut Global Division [Member] | UNITED STATES | Franchise contributions for advertising and other services
Revenues	70	76	223	224
Pizza Hut Global Division [Member] | CHINA | Franchise and property revenues
Revenues	16	15	48	37
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Company Sales
Revenues	8	15	24	42
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise and property revenues
Revenues	66	55	185	160
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Property Revenues
Revenues	0	1	1	2
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise contributions for advertising and other services
Revenues	17	13	50	39
Taco Bell Global Division [Member]
Revenues	534	501	1,554	1,403
Taco Bell Global Division [Member] | UNITED STATES | Company Sales
Revenues	225	218	656	610
Taco Bell Global Division [Member] | UNITED STATES | Franchise and property revenues
Revenues	156	148	460	411
Taco Bell Global Division [Member] | UNITED STATES | Property Revenues
Revenues	11	10	31	31
Taco Bell Global Division [Member] | UNITED STATES | Franchise contributions for advertising and other services
Revenues	130	117	375	331
Taco Bell Global Division [Member] | CHINA | Franchise and property revenues
Revenues	0	0	0	0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Company Sales
Revenues	0	0	0	0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise and property revenues
Revenues	10	7	27	18
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Property Revenues
Revenues	0	0	0	0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise contributions for advertising and other services
Revenues	2	1	5	2
Habit Division [Member]
Revenues	133	118	394	232
Habit Division [Member] | UNITED STATES | Company Sales
Revenues	132	118	391	231
Habit Division [Member] | UNITED STATES | Franchise and property revenues
Revenues	1	0	3	1
Habit Division [Member] | UNITED STATES | Property Revenues
Revenues	0	0	0	0
Habit Division [Member] | UNITED STATES | Franchise contributions for advertising and other services
Revenues	0	0	0	0
Habit Division [Member] | CHINA | Franchise and property revenues
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Company Sales
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Franchise and property revenues
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Property Revenues
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Franchise contributions for advertising and other services
Revenues	$ 0	$ 0	$ 0	$ 0