Represents threshold amount for environment matters.

No definition available.

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

- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Period Type:	duration

- Definition

Amount of loss contingency liability.

+ References

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Balance Type:	credit
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- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

+ Details

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

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Details

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Namespace Prefix:
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Period Type:

- Details

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Period Type:

- Details

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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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CONTINGENCIES (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
CONTINGENCIES (Details) - USD ($) $ in Millions	Aug. 30, 2026	Feb. 22, 2026	May 31, 2026
CONTINGENCIES
Threshold amount for Environmental Matters	$ 1.0
Threatened Litigation
CONTINGENCIES
Loss contingency accrual	20.0		$ 47.7
Beatrice
CONTINGENCIES
Accrual for environmental loss contingencies	41.7		39.4
Beatrice \| Other accrued liabilities
CONTINGENCIES
Accrual for environmental loss contingencies	3.0		3.0
Beatrice \| Other noncurrent liabilities
CONTINGENCIES
Accrual for environmental loss contingencies	38.7		36.4
Reese V Conagra Brands Inc
CONTINGENCIES
Loss contingency accrual payments			$ 141.1
Reese V Conagra Brands Inc \| Scenario, Plan [Member]
CONTINGENCIES
Loss contingency accrual payments	44.3
Esparza v. Conagra Brands, Inc.
CONTINGENCIES
Loss contingency		$ 25.0
Loss contingency damages value	$ 22.9