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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended			18 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Net Income (loss) - YUM! Brands, Inc.						$ 334.0	$ 454.0	$ 321.0	$ 433.0	$ 1,294.0	$ 1,542.0	$ 1,340.0
Business Combination, Consideration Transferred										375.0	77.0
Payments to Acquire Businesses, Net of Cash Acquired										0.0	66.0	0.0
Advertising Expense										73.0	96.0	179.0
Costs associated with PH U.S. Acceleration Agreement										25.0	25.0	39.0
Cooperative Advertising Expense										1,368.0	1,208.0	0.0
Rental income												86.0
Future lease payments due from franchisees on a nominal basis		$ 1,000.0								1,000.0
Reclassification of Retained Earnings to Common Stock for Share Repurchase										796.0	2,356.0	1,915.0
Revenues		1,694.0	$ 1,339.0	$ 1,310.0	$ 1,254.0	1,558.0	1,391.0	1,368.0	1,371.0	5,597.0	5,688.0	5,878.0
Retained Earnings
Schedule of Equity Method Investments [Line Items]
Net Income (loss) - YUM! Brands, Inc.										1,294.0	1,542.0	1,340.0
Employee stock option and SARs exercises (includes tax impact)										18.0		20.0
Advertising Cooperatives [Domain]
Schedule of Equity Method Investments [Line Items]
Advertising Expense										10.0	35.0	66.0
Cooperative Advertising Expense										1,133.0	1,035.0
Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		490.0	364.0	359.0	333.0	477.0	499.0	512.0	512.0	1,546.0	2,000.0	3,572.0
Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		434.0	$ 330.0	$ 318.0	$ 309.0	$ 372.0	$ 287.0	$ 272.0	$ 275.0	1,391.0	1,206.0	0.0
United States
Schedule of Equity Method Investments [Line Items]
Rental income										70.0	54.0
United States | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										1,014.0	1,143.0
United States | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										1,059.0	994.0
United States | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										811.0	706.0
CHINA | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										274.0	260.0
Other, Outside the U.S. and China [Member]
Schedule of Equity Method Investments [Line Items]
Rental income										72.0	77.0
Other, Outside the U.S. and China [Member] | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										532.0	857.0
Other, Outside the U.S. and China [Member] | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										1,185.0	1,097.0
Other, Outside the U.S. and China [Member] | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										580.0	500.0
KFC Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	[1]									2,491.0	2,644.0	3,110.0
KFC Global Division [Member] | United States
Schedule of Equity Method Investments [Line Items]
Rental income										20.0	23.0
KFC Global Division [Member] | United States | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										74.0	72.0
KFC Global Division [Member] | United States | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										175.0	171.0
KFC Global Division [Member] | United States | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										10.0	9.0
KFC Global Division [Member] | CHINA | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										214.0	201.0
KFC Global Division [Member] | Other, Outside the U.S. and China [Member]
Schedule of Equity Method Investments [Line Items]
Rental income										69.0	74.0
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										497.0	822.0
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										912.0	825.0
KFC Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										520.0	447.0
Pizza Hut Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	[1]									1,027.0	988.0	893.0
Pizza Hut Global Division [Member] | United States
Schedule of Equity Method Investments [Line Items]
Rental income										6.0	4.0
Pizza Hut Global Division [Member] | United States | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										21.0	37.0
Pizza Hut Global Division [Member] | United States | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										282.0	284.0
Pizza Hut Global Division [Member] | United States | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										318.0	269.0
Pizza Hut Global Division [Member] | CHINA | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										60.0	59.0
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member]
Schedule of Equity Method Investments [Line Items]
Rental income										3.0	3.0
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										33.0	32.0
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										246.0	248.0
Pizza Hut Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										58.0	52.0
Taco Bell Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	[1]									2,079.0	2,056.0	1,880.0
Taco Bell Global Division [Member] | United States
Schedule of Equity Method Investments [Line Items]
Rental income										44.0	27.0
Taco Bell Global Division [Member] | United States | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										919.0	1,034.0
Taco Bell Global Division [Member] | United States | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										602.0	539.0
Taco Bell Global Division [Member] | United States | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										483.0	428.0
Taco Bell Global Division [Member] | CHINA | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										0.0	0.0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member]
Schedule of Equity Method Investments [Line Items]
Rental income										0.0	0.0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Product [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										2.0	3.0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Franchise [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										27.0	24.0
Taco Bell Global Division [Member] | Other, Outside the U.S. and China [Member] | Advertising [Member]
Schedule of Equity Method Investments [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										2.0	1.0
Franchise and property expenses [Member] | Pizza Hut Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Costs associated with PH U.S. Acceleration Agreement											12.5	25.0	$ 37.5
1 year [Member]
Schedule of Equity Method Investments [Line Items]
Deferred Revenue, Revenue Expected to be Recognized		65.0								65.0
2 years [Member]
Schedule of Equity Method Investments [Line Items]
Deferred Revenue, Revenue Expected to be Recognized		60.0								60.0
3 years [Member]
Schedule of Equity Method Investments [Line Items]
Deferred Revenue, Revenue Expected to be Recognized		56.0								56.0
4 years [Member]
Schedule of Equity Method Investments [Line Items]
Deferred Revenue, Revenue Expected to be Recognized		51.0								51.0
5 years [Member]
Schedule of Equity Method Investments [Line Items]
Deferred Revenue, Revenue Expected to be Recognized		46.0								46.0
Thereafter 5 years [Member]
Schedule of Equity Method Investments [Line Items]
Deferred Revenue, Revenue Expected to be Recognized		$ 163.0								163.0
Incremental Advertising [Member] | KFC Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Costs associated with KFC U.S. Acceleration Agreement											10.0	20.0
Incremental Advertising [Member] | Franchise and property expenses [Member] | KFC Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Costs associated with KFC U.S. Acceleration Agreement											10.0	20.0
Incremental Advertising [Member] | Franchise and property expenses [Member] | Pizza Hut Global Division [Member]
Schedule of Equity Method Investments [Line Items]
Costs associated with PH U.S. Acceleration Agreement											$ 12.5	$ 25.0
53rd Week Impact [Member]
Schedule of Equity Method Investments [Line Items]
Net Income (loss) - YUM! Brands, Inc.										17.0
Revenues										$ 66.0
[1] 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.

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