Description of Business (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) Months operating_segments restaurants countries_and_territiories Rate		Dec. 31, 2017 USD ($)		Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Approximate Number Of System Units | restaurants	48,000
Percent Of System Units Located Outside United States	98.00%
Approximate Number Of Countries And Territories Where System Units Are Located | countries_and_territiories	140
Number of Operating Segments | operating_segments	3
Revenues	$ 5,688				$ 6,356
Operating Profit	2,296		$ 2,761		1,682
Stock Repurchased During Period, Value	$ 2,394	[1]	1,915	[2]	5,447	[2]
Fiscal period months standard first quarter | Months	2
Fiscal period months standard second and third quarters | Months	3
Fiscal period months standard fourth quarter | Months	4
Number of periods or months in advance that certain of our international businesses close their books | Months	1
KFC Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	$ 2,644
Operating Profit	959		981		871
Pizza Hut Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	988
Operating Profit	348		341		367
Taco Bell Global Division [Member]
Segment Reporting Information [Line Items]
Revenues	2,056
Operating Profit	$ 633		$ 619		$ 595
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 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.

[2] 2017 amount excludes and 2016 amount includes 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.