Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018	Mar. 18, 2020
Operating Lease, Cost	$ 137		$ 115
Finance Lease, Right-of-Use Asset, Amortization	5		3
Finance Lease, Interest Expense	3		3
Finance Lease Cost	8		6
Sublease Income	(60)		(69)
Operating Leases, Rent Expense				$ 151
Operating Lease, Payments	133		104
Finance Lease, Interest Payment on Liability	3		3
Finance Lease, Principal Payments	5		4
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	296		79
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	4		14
Operating Lease, Right-of-Use Asset	851		642
Finance Lease, Right-of-Use Asset	40		42
Lease Right of Use Asset	891	[1]	684
Total Lease Liability	$ 992	[1]	$ 784
Operating Lease, Weighted Average Remaining Lease Term	11 years 1 month 6 days		12 years 3 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	12 years 2 months 12 days		12 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.10%		5.60%
Finance Lease, Weighted Average Discount Rate, Percent	6.50%		6.60%
Finance Lease, Liability, Undiscounted Excess Amount	$ (30)
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(305)
Sales-type and Direct Financing Leases, Lease Receivable, Undiscounted Excess Amount	(18)
Finance Lease, Liability	72
Sales-type and Direct Financing Leases, Lease Receivable	45
Operating Leases, Future Minimum Payments Receivable	988
Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received	27
YUM_LesseeOperatingLeaseLeaseNotYetCommencedAssumptionAndJudgmentValueOfUnderlyingLiabilityAmount	$ 100
Lessee, Operating Lease, Term of Contract	20 years
Capital leases, future minimum commitments [Abstract]
2016	$ 9
2017	10
2018	9
2019	8
2020	8
Thereafter	58
Capital leases, total future minimum commitments	102
Operating leases, future minimum commitments [Abstract]
2016	128
2017	133
2018	123
2019	115
2020	103
Thereafter	623
Operating leases, total future minimum commitments	1,225
Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, after Rolling Year Five	27
Lessor, Operating Lease, Payments to be Received, Thereafter	599
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	3
Lessor, Operating Lease, Payments to be Received, Five Years	71
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	4
Lessor, Operating Lease, Payments to be Received, Four Years	76
Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Three	4
Lessor, Operating Lease, Payments to be Received, Three Years	80
Sales-type and Direct Financing Leases, Lease Receivable, Lease Payments to be Received, Rolling Year Two	4
Direct Financing Lease, Lease Receivable	3
Lessor, Operating Lease, Payments to be Received, Next Twelve Months	80
Operating Leases, Future Minimum Payments Receivable, in Two Years	82
Lease Agreements [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets					$ 196
Other Current Liabilities [Member]
Operating Lease, Liability, Current	97		$ 67
Finance Lease, Liability, Current	7		7
Other Noncurrent Liabilities [Member]
Operating Lease, Liability, Noncurrent	823		640
Finance Lease, Liability, Noncurrent	65		70
Other Liabilities [Member]
Operating Lease, Liability	920
United States
Operating Lease, Right-of-Use Asset	499		283
Operating Lease, Liability	$ 556		$ 337

[1] (a)    U.S. operating lease right-of-use assets and liabilities totaled $499 million and $556 million, respectively, as of December 31, 2020, and $283 million and $337 million, respectively, as of December 31, 2019. These amounts primarily related to Taco Bell U.S. and the Habit Burger Grill including leases related to Company-operated restaurants, leases related to franchise-operated restaurants we sublease and the Taco Bell restaurant support center.