Share-based and Deferred Compensation Plans (Details) $ / shares in Units, shares in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2018 USD ($) groups $ / shares shares		Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares
Award Valuation
Risk-free interest rate (in hundredths)		2.50%		1.90%	1.40%
Expected term (years)		6 years 6 months		6 years 5 months	6 years 5 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		22.00%		22.90%	27.00%
Expected dividend yield (in hundredths)		1.80%		1.80%	2.60%
Number of homogeneous groups appropriate to group awards into when estimating expected term | groups		2
Summary of award activity - Stock options and SARs, additional disclosures [Abstract]
Options outstanding at the end of the year (in shares) | shares		753
SARs outstanding at the end of the year (in shares) | shares		15,438
Options outstanding at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares		$ 42.40
SARs outstanding at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares		$ 52.30
Impact on net income [Abstract]
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense		$ 47.0		$ 117.0
Cash received from stock options exercises		5.5		$ 12.0	$ 5.0
General and administrative expenses		$ 895.0
Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum vesting period of outstanding awards (in years)		P1Y07M0D
Summary of award activity - Stock options and SARs [Roll Forward]
Granted (in shares) | shares		2,580
Exercised (in shares) | shares		(3,832)
Forfeited or expired (in shares) | shares		(842)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price | $ / shares		$ 71.72
Summary of award activity - Stock options and SARs, additional disclosures [Abstract]
Granted, Weighted-average exercise price (in dollars per share) | $ / shares		78.35
Exercised, Weighted-average exercise price (in dollars per share) | $ / shares		$ 34.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		$ 626.0
Exercisable at the end of the year (in shares) | shares		10,297
Exercisable at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares		$ 43.23
Share Based Compensation Arrangement By Share Based Payment Award, Options, Exercisable Weighted Average Remaining Contractual Term		4 years 8 days
Exercisable at the end of the year, Aggregate intrinsic value (in dollars)		$ 501.0
Options outstanding at the end of the year (in shares) | shares		16,191	[1]	18,285
Options outstanding at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares		$ 51.84		$ 44.85
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term		5 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares		$ 16.45		$ 14.08	$ 14.40
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		$ 195.0		$ 154.0	$ 263.0
Unrecognized compensation cost		48.0
Restricted Stock Units And Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		16.0		10.0	7.0
Summary of award activity - Stock options and SARs, additional disclosures [Abstract]
Unrecognized compensation cost		$ 21.0
Unvested RSUs and PSUs | shares		1,000
Long Term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum vesting period of outstanding awards (in years)		immediate
Maximum vesting period of outstanding awards (in years)		5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Approximate number of shares available for grant (in shares) | shares		28,000
Executive Income Deferral Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of Company match on amount deferred (in hundredths)		33.00%
Executive Income Deferral Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		2 years
Mark-to-Market of YUM China Funds [Member] | Executive Income Deferral Plan [Member]
Impact on net income [Abstract]
General and administrative expenses		$ 3.0		18.0	30.0
Continuing Operations [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense	[2]	50.0		65.0	80.0	[3]
Employee Service Share-based Compensation, Deferred Tax Benefit from Compensation Expense		9.0
Impact on net income [Abstract]
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	[4]			22.0	26.0
EID compensation expense not share-based		(2.0)		12.0	5.0
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options		60.0		153.0	109.0
General and administrative expenses		895.0		999.0	1,129.0
Continuing Operations [Member] | Stock Options and Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense		37.0		30.0	38.0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		28.0		33.0	41.0
Continuing Operations [Member] | Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense		7.0		9.0	4.0
Continuing Operations [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Expense		6.0		26.0	$ 38.0
Unallocated amounts to segment [Member] | Mark-to-Market of YUM China Funds [Member] | Executive Income Deferral Plan [Member]
Impact on net income [Abstract]
General and administrative expenses		$ 3.0		18.0
Restaurant-level Employees [Domain] | Long Term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Average Exercise Period		5 years
Vesting period (in years)		4 years
Executives [Domain] | Long Term Incentive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		10 years
Share-based Compensation Arrangement by Share-based Payment Award, Average Exercise Period		6 years 6 months
Vesting period (in years)		4 years
Award Valuation
Graded vesting schedule of grants made to executives under other stock award plans		25%
U.S. Pension Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Benefit Plan, Plan Assets, Benefits Paid		$ 73.0		$ 76.0

[1] Outstanding awards include 753 options and 15,438 SARs with weighted average exercise prices of $42.40 and $52.30, respectively. Outstanding awards represent YUM awards held by employees of both YUM and Yum China.

[2] Includes $3 million of appreciation and $18 million of depreciation in the market price of Yum China's stock in 2018 and 2017, respectively. See Note 5.

[3] Includes $30 million due to modifications of awards in connection with the Separation that was not allocated to any of our operating segments for performance purposes. See Note 5.

[4] Deferred tax benefit recognized does not reflect the impact of the Tax Act. See Note 17.