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Share-based and Deferred Compensation Plans (Details) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) groups $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Expense | $ 59.0 |  | $ 50.0 | [1] | $ 65.0 | [1]
Award Valuation |  |  |  |  |  |
Risk-free interest rate (in hundredths) | 2.50% |  | 2.50% |  | 1.90% |
Expected term (years) | 6 years 6 months |  | 6 years 6 months |  | 6 years 5 months |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 22.00% |  | 22.00% |  | 22.90% |
Expected dividend yield (in hundredths) | 1.80% |  | 1.80% |  | 1.80% |
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 | 782 |  |  |  |  |
SARs outstanding at the end of the year (in shares) | shares | 14,082 |  |  |  |  |
Options outstanding at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares | $ 45.03 |  |  |  |  |
SARs outstanding at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares | $ 61.64 |  |  |  |  |
Impact on net income [Abstract] |  |  |  |  |  |
Share-based Payment Arrangement, Expense, Tax Benefit | $ 9.0 |  | $ 9.0 |  | $ 22.0 | [2]
EID compensation expense not share-based | 17.0 |  | (2.0) |  | 12.0 |
Cash received from stock options exercises | 1.0 |  | 5.5 |  | 12.0 |
Share-based Payment Arrangement, Exercise of Option, Tax Benefit | 66.0 |  | 60.0 |  | 153.0 |
General and administrative expenses | 917.0 |  | 895.0 |  | 999.0 |
Stock Options and Stock Appreciation Rights [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Expense | $ 39.0 |  | 37.0 |  | 30.0 |
Minimum vesting period of outstanding awards (in years) | P1Y8M13D |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $ 31.0 |  | $ 28.0 |  | $ 33.0 |
Summary of award activity - Stock options and SARs [Roll Forward] |  |  |  |  |  |
Granted (in shares) | shares | 2,332 |  |  |  |  |
Exercised (in shares) | shares | (3,210) |  |  |  |  |
Forfeited or expired (in shares) | shares | (449) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price | $ / shares | $ 75.29 |  |  |  |  |
Summary of award activity - Stock options and SARs, additional disclosures [Abstract] |  |  |  |  |  |
Granted, Weighted-average exercise price (in dollars per share) | $ / shares | 93.52 |  |  |  |  |
Exercised, Weighted-average exercise price (in dollars per share) | $ / shares | $ 38.16 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ 594.0 |  |  |  |  |
Exercisable at the end of the year (in shares) | shares | 9,283 |  |  |  |  |
Exercisable at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares | $ 49.38 |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award, Options, Exercisable Weighted Average Remaining Contractual Term | 4 years 1 month 7 days |  |  |  |  |
Exercisable at the end of the year, Aggregate intrinsic value (in dollars) | $ 477.0 |  |  |  |  |
Options outstanding at the end of the year (in shares) | shares | 14,864 | [3] | 16,191 |  |  |
Options outstanding at the end of the year, Weighted-average exercise price (in dollars per share) | $ / shares | $ 60.76 |  | $ 51.84 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 5 years 7 months 14 days |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares | $ 19.82 |  | $ 16.45 |  | $ 14.08 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $ 204.0 |  | $ 195.0 |  | $ 154.0 |
Unrecognized compensation cost | 49.0 |  |  |  |  |
Performance Share Units [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Expense | 8.0 |  | 7.0 |  | 9.0 |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based Compensation Expense | 12.0 |  | 6.0 |  | 26.0 |
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 | 14.0 |  | 16.0 |  | 10.0 |
Summary of award activity - Stock options and SARs, additional disclosures [Abstract] |  |  |  |  |  |
Unrecognized compensation cost | $ 30.0 |  |  |  |  |
Unvested RSUs and PSUs | shares | 1,100 |  |  |  |  |
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 | 26,000 |  |  |  |  |
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 |  | $ 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% |  |  |  |  |
[1] | 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 4.
[2] | Deferred tax benefit recognized does not reflect the impact of the Tax Act. See Note 17.
[3] | Outstanding awards include 782 options and 14,082 SARs with weighted average exercise prices of $45.03 and $61.64, respectively. Outstanding awards represent YUM awards held by employees of both YUM and Yum China.

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