Revenue Recognition Accounting Policy (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Revenues	$ 1,486	$ 1,263
Product [Member]
Revenues	476	355
Franchise [Member]
Revenues	658	596
Advertising [Member]
Revenues	352	312
UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	14	15
UNITED STATES \| Product [Member]
Revenues	348	228
UNITED STATES \| Franchise [Member]
Revenues	256	231
UNITED STATES \| Advertising [Member]
Revenues	202	181
CHINA \| Franchise [Member]
Revenues	78	57
Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	15	15
Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	128	127
Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	295	278
Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	150	131
KFC Global Division [Member]
Revenues	625	566
KFC Global Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	4	4
KFC Global Division [Member] \| UNITED STATES \| Product [Member]
Revenues	14	16
KFC Global Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	44	38
KFC Global Division [Member] \| UNITED STATES \| Advertising [Member]
Revenues	6	4
KFC Global Division [Member] \| CHINA \| Franchise [Member]
Revenues	62	47
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	14	14
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	119	114
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	230	212
KFC Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	132	117
Pizza Hut Global Division [Member]
Revenues	251	235
Pizza Hut Global Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	0	1
Pizza Hut Global Division [Member] \| UNITED STATES \| Product [Member]
Revenues	5	5
Pizza Hut Global Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	67	62
Pizza Hut Global Division [Member] \| UNITED STATES \| Advertising [Member]
Revenues	79	70
Pizza Hut Global Division [Member] \| CHINA \| Franchise [Member]
Revenues	16	10
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	1	1
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	9	13
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	57	59
Pizza Hut Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	17	14
Taco Bell Global Division [Member]
Revenues	488	453
Taco Bell Global Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	10	10
Taco Bell Global Division [Member] \| UNITED STATES \| Product [Member]
Revenues	208	198
Taco Bell Global Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	144	131
Taco Bell Global Division [Member] \| UNITED STATES \| Advertising [Member]
Revenues	117	107
Taco Bell Global Division [Member] \| CHINA \| Franchise [Member]
Revenues	0	0
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	0	0
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Product [Member]
Revenues	0	0
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Franchise [Member]
Revenues	8	7
Taco Bell Global Division [Member] \| Other, Outside the U.S. and China [Member] \| Advertising [Member]
Revenues	1	0
Habit Division [Member]
Revenues	122	9
Habit Division [Member] \| UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	0	0
Habit Division [Member] \| UNITED STATES \| Product [Member]
Revenues	121	9
Habit Division [Member] \| UNITED STATES \| Franchise [Member]
Revenues	1	0
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