Description of Business (Details) $ in Millions		3 Months Ended																12 Months Ended
		Dec. 31, 2019 USD ($) restaurants countries_and_territiories		Sep. 30, 2019 USD ($)		Jun. 30, 2019 USD ($)		Mar. 31, 2019 USD ($)		Dec. 31, 2018 USD ($)		Sep. 30, 2018 USD ($)		Jun. 30, 2018 USD ($)		Mar. 31, 2018 USD ($)		Dec. 31, 2019 USD ($) operating_segments restaurants countries_and_territiories Rate		Dec. 31, 2018 USD ($)		Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Approximate Number Of System Units | restaurants		50,000																50,000
Percent Of System Units Located Outside United States		98.00%																98.00%
Approximate Number Of Countries And Territories Where System Units Are Located | countries_and_territiories		150																150
Number of Operating Segments | operating_segments																		3
Revenues		$ 1,694		$ 1,339		$ 1,310		$ 1,254		$ 1,558		$ 1,391		$ 1,368		$ 1,371		$ 5,597		$ 5,688		$ 5,878
Operating Profit		$ 546	[1]	$ 480	[1]	$ 471	[1]	$ 433	[1]	$ 741	[2]	$ 553	[2]	$ 449	[2]	$ 553	[2]	1,930	[1]	2,296	[2]	2,761
Stock Repurchased During Period, Value																		810	[3]	2,394	[3]	1,915	[4]
KFC Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	[5]																	2,491		2,644		3,110
Operating Profit																		1,052		959		981
Pizza Hut Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	[5]																	1,027		988		893
Operating Profit																		369		348		341
Taco Bell Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	[5]																	2,079		2,056		1,880
Operating Profit																		$ 683		$ 633		$ 619
Minimum [Member]
Segment Reporting Information [Line Items]
Continuing Fees Rate | Rate																		4.00%
Maximum [Member]
Segment Reporting Information [Line Items]
Continuing Fees Rate | Rate																		6.00%

[1] Includes net gains from refranchising initiatives of $6 million, $4 million, $8 million and $19 million in the first, second, third and fourth quarters, respectively.

[2] Includes net gains from refranchising initiatives of $156 million, $29 million, $100 million and $255 million in the first, second, third and fourth quarters, respectively.

[3] 2019 amount excludes and 2018 amount includes the effect of $5 million in share repurchases (0.1 million shares) with trade dates on, or prior to, December 31, 2018 but settlement dates subsequent to December 31, 2018.

[4] 2017 amount excludes the effect of $45 million in share repurchases (0.7 million shares) with trade dates prior to December 31, 2016 but settlement dates subsequent to December 31, 2016.

[5] U.S. revenues included in the combined KFC, Pizza Hut and Taco Bell Divisions totaled $3.0 billion in 2019, $2.9 billion in 2018 and $2.8 billion in 2017.