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Financial Statement Presentation (Details) | 3 Months Ended
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Mar. 31, 2021 countries_and_territiories restaurants Months operating_segments Rate
Number of Countries in which Entity Operates | countries_and_territiories | 150
Number of Stores | restaurants | 50,000
Percent Of System Units Located Outside United States | Rate | 98.00%
Number of Reportable Segments | operating_segments | 4
Fiscal period months standard for each quarter | Months | 3

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- Definition The number of countries in which the entity operates as of balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the number of stores. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fiscal period months standard for each quarter + References No definition available. + Details
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Namespace Prefix: | yum_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Franchise Restaurant Ownership + References No definition available. + Details
Name: | yum_FranchiseRestaurantOwnership
Namespace Prefix: | yum_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant