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DISCONTINUED OPERATIONS (Assets and Liabilities Classified as Held for Sale) (Additional Information) (Details) $ in Millions | May. 25, 2014 USD ($)
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Discontinued Operations and Disposal Groups [Abstract] |
Allowance for doubtful accounts | $ 1.2

X
- Definition Disposal Group, Including Discontinued Operation, Allowance for Doubtful Accounts Receivable + References No definition available. + Details
Name: | cag_DisposalGroupIncludingDiscontinuedOperationAllowanceforDoubtfulAccountsReceivable
Namespace Prefix: | cag_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration