Revenue Recognition Accounting Policy (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues	$ 1,602	$ 1,198	$ 3,088	$ 2,461
Product [Member]
Revenues	520	403	996	758
Franchise [Member]
Revenues	706	525	1,364	1,121
Advertising [Member]
Revenues	376	270	728	582
UNITED STATES
Property revenues	15	16	29	31
UNITED STATES | Product [Member]
Revenues	382	316	730	544
UNITED STATES | Franchise [Member]
Revenues	276	243	532	474
UNITED STATES | Advertising [Member]
Revenues	209	190	411	371
CHINA | Franchise [Member]
Revenues	74	59	152	116
Other, Outside the U.S. and China [Member]
Property revenues	15	11	30	26
Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	138	87	266	214
Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	326	196	621	474
Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	167	80	317	211
KFC Global Division [Member]
Revenues	682	409	1,307	975
KFC Global Division [Member] | UNITED STATES
Property revenues	3	3	7	7
KFC Global Division [Member] | UNITED STATES | Product [Member]
Revenues	16	13	30	29
KFC Global Division [Member] | UNITED STATES | Franchise [Member]
Revenues	48	44	92	82
KFC Global Division [Member] | UNITED STATES | Advertising [Member]
Revenues	7	5	13	9
KFC Global Division [Member] | CHINA | Franchise [Member]
Revenues	58	47	120	94
KFC Global Division [Member] | Other, Outside the U.S. and China [Member]
Property revenues	15	11	29	25
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	131	73	250	187
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	255	146	485	358
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	149	67	281	184
Pizza Hut Global Division [Member]
Revenues	249	235	500	470
Pizza Hut Global Division [Member] | UNITED STATES
Property revenues	2	2	2	3
Pizza Hut Global Division [Member] | UNITED STATES | Product [Member]
Revenues	5	5	10	10
Pizza Hut Global Division [Member] | UNITED STATES | Franchise [Member]
Revenues	67	66	134	128
Pizza Hut Global Division [Member] | UNITED STATES | Advertising [Member]
Revenues	74	78	153	148
Pizza Hut Global Division [Member] | CHINA | Franchise [Member]
Revenues	16	12	32	22
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member]
Property revenues	0	0	1	1
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	7	14	16	27
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	62	46	119	105
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	16	12	33	26
Taco Bell Global Division [Member]
Revenues	532	449	1,020	902
Taco Bell Global Division [Member] | UNITED STATES
Property revenues	10	11	20	21
Taco Bell Global Division [Member] | UNITED STATES | Product [Member]
Revenues	223	194	431	392
Taco Bell Global Division [Member] | UNITED STATES | Franchise [Member]
Revenues	160	132	304	263
Taco Bell Global Division [Member] | UNITED STATES | Advertising [Member]
Revenues	128	107	245	214
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]
Property revenues	0	0	0	0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	0	0	0	0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	9	4	17	11
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	2	1	3	1
Habit Division [Member]
Revenues	139	105	261	114
Habit Division [Member] | UNITED STATES
Property revenues	0	0	0	0
Habit Division [Member] | UNITED STATES | Product [Member]
Revenues	138	104	259	113
Habit Division [Member] | UNITED STATES | Franchise [Member]
Revenues	1	1	2	1
Habit Division [Member] | UNITED STATES | Advertising [Member]
Revenues	0	0	0	0
Habit Division [Member] | CHINA | Franchise [Member]
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member]
Property revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	0	0	0	0
Habit Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	$ 0	$ 0	$ 0	$ 0