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Supplemental Cash Flow Information Franchise Development Fund (Details) $ in Thousands | Aug. 31, 2021 USD ($) number_of_restaurants
--- | ---
Franchise Development Fund |
Build to Suit Development Fund, Expected Cost | $ | $ 100,000
Maximum |
Franchise Development Fund |
Build to Suit Development Fund, Expected Number of Restaurants | number_of_restaurants | 80

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- Definition Build to Suit Development Fund, Expected Cost + References No definition available. + Details
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Namespace Prefix: | wen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Build to Suit Development Fund, Expected Number of Restaurants + References No definition available. + Details
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Namespace Prefix: | wen_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Franchise Development Fund [Line Items] + References No definition available. + Details
Name: | wen_FranchiseDevelopmentFundLineItems
Namespace Prefix: | wen_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |