Fixed charges coverage if range in than repay borrowings as per multi year revolving credit facility.

No definition available.

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- Definition

Increase (decrease) in interest expense due to the net impact of previously closed interest rate swap agreements.

+ References

No definition available.

+ Details

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- Details

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Balance Type:	na
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- Definition

Percentage of consolidated capital base if exceeded by funded debt than repay.

+ References

No definition available.

+ Details

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Namespace Prefix:	cag_
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Balance Type:	na
Period Type:	duration

- Definition

Proceeds from termination of interest rate swap contract.

+ References

No definition available.

+ Details

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

- Definition

Reduction of net interest expense due to impact of interest rate swap contracts.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Balance Type:	credit
Period Type:	instant

- Definition

Interest rate stated in the contractual debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The amount of cash paid for interest during the period net of cash paid for interest that is capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 29

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 27

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 20

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Balance Type:	credit
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- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5710-111685

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Senior Long-Term Debt, Subordinated Debt and Loan Agreements (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 27, 2012	May 29, 2011	May 30, 2010
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	3.25%
Proceed from issued Senior Notes	$ 2,938.8	$ 3,274.8
Repayment of debt	363.6	294.3	15.8
Senior Long-Term Debt Subordinated Debt and Loan Agreements (Additional Textual) [Abstract]
Debt of consolidated variable interest entities	30.1	43.5
Interest paid from continuing and discontinued operations	211.9	231.7	244.3
Reduction of net interest expense due to impact of interest rate swap contracts	9.9	14.5	1.2
Proceeds from termination of interest rate swap contract		31.5
Increase in interest expense due to the net impact of previously closed interest rate swap agreements	0.2	1.0	0.7
Percentage of consolidated capital base if exceeded by funded debt than repay borrowings as per multi-year revolving credit facility	65.00%
Fixed charges coverage if range in than repay borrowings as per multi-year revolving credit facility	1.75 to 1.0
8.25% senior debt due September 2030 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	8.25%
7.0% senior debt due October 2028 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	7.00%
6.7% senior debt due August 2027 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	6.70%
7.125% senior debt due October 2026 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	7.125%
7.0% senior debt due April 2019 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	7.00%
5.819% senior debt due June 2017 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	5.819%
5.875% senior debt due April 2014 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	5.875%
6.75% senior debt due September 2011 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	6.75%
Repayment of debt	342.7
2.00% to 9.59% lease financing obligations due on various dates through 2029 [Member] \| Maximum [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	9.59%
2.00% to 9.59% lease financing obligations due on various dates through 2029 [Member] \| Minimum [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	2.00%
9.75% subordinated debt due March 2021 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	9.75%
7.875% senior debt due September 2010 [Member]
Long Term Debt Instruments (Textual) [Abstract]
Long-term debt interest rate	7.875%
Repayment of debt		248.0
Lamb Weston BSW [Member]
Long Term Debt Instruments (Textual) [Abstract]
Repayment of debt		$ 35.4