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Other (Income) Expense (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Other Income and Expenses [Line Items] |  |  |  |
Other (income) expense | $ 7 | $ 1 | $ 10 | $ 3

X
- Definition The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. + References No definition available. + Details
Name: | us-gaap_OtherOperatingIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Income and Expenses [Line Items] + References No definition available. + Details
Name: | yum_OtherIncomeAndExpensesLineItems
Namespace Prefix: | yum_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration