XML 64 R51.htm IDEA: XBRL DOCUMENT
v3.8.0.1

VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Aug. 27, 2017 | May 28, 2017
Variable Interest Entity [Line Items] |  |
Contingent put options, general exercise period | 30 days |
Loss on lease put option |  |
Variable Interest Entity [Line Items] |  |
Contingent put options, general exercise period | 30 days |
Estimated amount by which put prices exceeded the fair values of the related properties | $ 51.8 | $ 51.8
Accrued put cost | $ 9.3 | $ 8.4

X
- Definition Contingent Put Options, Exercise Period + References No definition available. + Details
Name: | cag_ContingentPutOptionsExercisePeriod
Namespace Prefix: | cag_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cag_LossonLeasePutOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |