Reportable Operating Segments (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenues		$ 1,602		$ 1,198	$ 3,088	$ 2,461
Operating Profit		567		300	1,110	550
General and Administrative Expense		230		259	436	467
Company restaurant expenses		417		349	809	647
Franchise and property expenses		27		36	50	94
Refranchising (gain) loss		(7)		(8)	(22)	(21)
Other (income) expense		4		2	10	(150)
Investment (income) expense, net		(1)		(91)	(1)	(57)
Other pension income (expense)		(2)		(2)	(5)	(5)
Interest Income (Expense), Net		(159)		(132)	(290)	(250)
Income Before Income Taxes		407		257	816	352
Business Combination, Acquisition Related Costs				3		9
Interest Expense, Debt					12
Goodwill [Member]
Segment Reporting Information [Line Items]
Impairment expense			$ 5			139
GrubHub Inc. [Member]
Segment Reporting Information [Line Items]
Investment (income) expense, net				(84)		(62)
KFC Global Division [Member]
Segment Reporting Information [Line Items]
Revenues		682		409	1,307	975
Operating Profit		318		153	618	377
Pizza Hut Global Division [Member]
Segment Reporting Information [Line Items]
Revenues		249		235	500	470
Operating Profit		103		87	205	163
Taco Bell Global Division [Member]
Segment Reporting Information [Line Items]
Revenues		532		449	1,020	902
Operating Profit		198		154	376	298
Habit Division [Member]
Segment Reporting Information [Line Items]
Revenues		139		105	261	114
Operating Profit		5		(6)	5	(8)
Unallocated [Member]
Segment Reporting Information [Line Items]
General and Administrative Expense	[1]	63		98	113	148
Company restaurant expenses		0		0	0	1
Franchise and property expenses		0		1	0	3
Refranchising (gain) loss		(7)		(8)	(22)	(21)
Other (income) expense		$ (1)		3	$ (3)	$ (149)
Other General Expense				$ 50

[1] Includes a $50 million contribution to Yum! Brands Foundation, Inc. (a stand-alone, not-for-profit organization that is not consolidated in the Company's results) in the second quarter of 2020 related to our "Unlocking Opportunity Initiative". Also included are costs related to our acquisition of Habit Burger Grill in the quarter and year to date ended June 30, 2020 of $3 million and $9 million, respectively.(b)Includes a charge of $139 million related to the impairment of Habit Burger Grill goodwill in the year to date ended June 30, 2020. See Note 2.