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Summary of Significant Accounting Policies (Details 4) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2018 USD ($) Months Rate | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jan. 01, 2018 USD ($) | Dec. 31, 2015 USD ($)
Revenues |  |  |  |  |  |  |  |  |  |  | $ 5,688 |  |  |  | $ 6,356 |  |  |
Fiscal period months standard first quarter | Months |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Period Within Date Of Corresponding Sales In Which Trade Receivables Are Classified As Accounts And Notes Receivable |  |  |  |  |  |  |  |  |  |  | 30 days |  |  |  |  |  |  |
Accounts and notes receivable [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts and notes receivable, net | $ 561 |  |  |  |  |  |  |  |  |  | $ 561 |  |  |  |  |  |  |
Other Assets | 321 |  |  |  |  | $ 375 |  |  |  |  | 321 |  | $ 375 |  |  |  |  |
Deferred income taxes | 195 |  |  |  |  |  |  |  |  |  | 195 |  |  |  |  |  |  |
Repurchase Of Shares Of Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Value |  |  |  |  |  |  |  |  |  |  | $ (2,394) | [1] | (1,915) | [2] | (5,447) | [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 |  |  |  |  |  |  |
Reduction to Retained earnings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase Of Shares Of Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Repurchased During Period, Value |  |  |  |  |  |  |  |  |  |  | $ (2,356) |  | (1,915) |  | (5,399) |  |  |
Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts and notes receivable [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 26 |
Continuing Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | 1,558 |  | $ 1,391 | $ 1,368 | $ 1,371 | 1,577 |  | $ 1,436 | $ 1,448 | $ 1,417 | 5,688 |  | 5,878 |  | 6,356 |  |  |
Receivables [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net amounts included in Other Assets | 62 |  |  |  |  | 38 |  |  |  |  | 62 |  | 38 |  |  |  |  |
Allowance for doubtful accounts related to notes and direct financing lease receivables | 1 |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |
Accounts and notes receivable [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts and notes receivable | 592 |  |  |  |  | 419 |  |  |  |  | 592 |  | 419 |  |  |  |  |
Allowance for doubtful accounts | (31) |  |  |  |  | (19) |  |  |  |  | (31) |  | (19) |  |  |  |  |
Accounts and notes receivable, net | 561 |  |  |  |  | 400 |  |  |  |  | 561 |  | 400 |  |  |  |  |
Other Assets | 321 |  |  |  |  | 375 |  |  |  |  | 321 |  | 375 |  |  |  |  |
Deferred income taxes | 195 |  |  |  |  | 139 |  |  |  |  | 195 |  | 139 |  |  |  |  |
Other current liabilities | 347 |  |  |  |  | 343 |  |  |  |  | 347 |  | 343 |  |  |  |  |
Repurchase Of Shares Of Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  |  |  | 1,176 |  | 1,030 |  | 1,248 |  |  |
Cash, Cash Equivalents and Restricted Cash as presented in the Consolidated Statement of Cash Flows | $ 474 | [3] |  |  |  | $ 1,599 | [3] |  |  |  | 474 | [3] | 1,599 | [3] | 831 | [3] | $ 1,668 | $ 365
Operating Expenses |  |  |  |  |  |  |  |  |  |  | 3,392 |  | 3,117 |  | 4,674 |  |  |
Franchise and property expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase Of Shares Of Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales Allowances, Services |  |  |  |  |  |  |  |  |  |  | 11 |  | $ 5 |  | $ 1 |  |  |
2018 [Member] | Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repurchase Of Shares Of Common Stock [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Expenses |  |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing Fees Rate | Rate |  |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing Fees Rate | Rate |  |  |  |  |  |  |  |  |  |  | 6.00% |  |  |  |  |  |  |
Capitalized software costs | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |
Capitalized software costs | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  | 7 years |  |  |  |  |  |  |
[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.
[3] | Upon adoption of Topic 606 we reclassified cash of $11 million and restricted cash of $58 million, respectively, from Advertising cooperative assets, restricted to Cash and cash equivalents and Prepaid expenses and other current assets. These amounts are included in the Beginning of Period balance of Cash, Cash Equivalents, Restricted Cash and Restricted Cash equivalents in our Consolidated Statement of Cash Flows for the year ended December 31, 2018.

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- Definition The period (in days) within the date of the corresponding sales in which trade receivables consisting of royalties from franchisees and licensees are generally due. These receivables are classified as Accounts and Notes Receivable on the Consolidated Balance Sheets. + References No definition available. + Details
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Namespace Prefix: | yum_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
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- Details
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Data Type: | na
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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