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Namespace Prefix:	cag_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents interest cost assumptions used calculating net periodic benefit cost discount rate.

No definition available.

Name:	cag_DefinedBenefitPlanInterestCostAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Namespace Prefix:	cag_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Represents service cost assumptions used calculating net periodic benefit cost discount rate.

No definition available.

Name:	cag_DefinedBenefitPlanServiceCostAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Namespace Prefix:	cag_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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.

No definition available.

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of contribution expected to be received by defined benefit plan from employer in remainder of current fiscal year. Excludes contribution previously paid by employer in current fiscal year.

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