Revenue Recognition Accounting Policy (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues	$ 1,198	$ 1,310	$ 2,461	$ 2,564
Product [Member]
Revenues	403	359	758	692
Franchise [Member]
Revenues	525	633	1,121	1,245
Advertising [Member]
Revenues	270	318	582	627
UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	16	17	31	35
UNITED STATES | Product [Member]
Revenues	316	235	544	452
UNITED STATES | Franchise [Member]
Revenues	243	248	474	481
UNITED STATES | Advertising [Member]
Revenues	190	190	371	370
CHINA | Franchise [Member]
Revenues	59	67	116	138
Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	11	16	26	35
Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	87	124	214	240
Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	196	285	474	556
Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	80	128	211	257
Taco Bell Global Division [Member]
Revenues	449	480	902	925
Taco Bell Global Division [Member] | UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	11	11	21	21
Taco Bell Global Division [Member] | UNITED STATES | Product [Member]
Revenues	194	212	392	408
Taco Bell Global Division [Member] | UNITED STATES | Franchise [Member]
Revenues	132	140	263	268
Taco Bell Global Division [Member] | UNITED STATES | Advertising [Member]
Revenues	107	109	214	213
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	1	0	2
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	4	7	11	13
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	1	0	1	0
Habit Division [Member]
Revenues	105	0	114	0
Habit Division [Member] | UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	0		0
Habit Division [Member] | UNITED STATES | Product [Member]
Revenues	104		113
Habit Division [Member] | UNITED STATES | Franchise [Member]
Revenues	1		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	235	246	470	489
Pizza Hut Global Division [Member] | UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	2	1	3	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	66	67	128	134
Pizza Hut Global Division [Member] | UNITED STATES | Advertising [Member]
Revenues	78	78	148	152
Pizza Hut Global Division [Member] | CHINA | Franchise [Member]
Revenues	12	15	22	30
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	0	0	1	1
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	14	6	27	12
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	46	60	105	120
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	12	14	26	27
KFC Global Division [Member]
Revenues	409	584	975	1,150
KFC Global Division [Member] | UNITED STATES
Operating Leases, Income Statement, Minimum Lease Revenue	3	5	7	11
KFC Global Division [Member] | UNITED STATES | Product [Member]
Revenues	13	18	29	34
KFC Global Division [Member] | UNITED STATES | Franchise [Member]
Revenues	44	41	82	79
KFC Global Division [Member] | UNITED STATES | Advertising [Member]
Revenues	5	3	9	5
KFC Global Division [Member] | CHINA | Franchise [Member]
Revenues	47	52	94	108
KFC Global Division [Member] | Other, Outside the U.S. and China [Member]
Operating Leases, Income Statement, Minimum Lease Revenue	11	16	25	34
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Revenues	73	117	187	226
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Revenues	146	218	358	423
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Revenues	$ 67	$ 114	$ 184	$ 230