Debt Instrument, Periodic Payment, Interest Rate, Effective Percentage

No definition available.

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

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e1043-128460

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 59

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details

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Period Type:	duration

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number APB14-1

-Paragraph 31

-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.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 4: 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)

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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

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

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13476-108611

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The effective interest rate at the end of the reporting period.

+ 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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: 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

+ Details

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Balance Type:	na
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- Details

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Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

+ Details

Name:	us-gaap_DebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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

- Definition

Adjustment to the amount at which a liability incurred or settled in a current transaction between willing parties, that is, other than in a forced or liquidation sale.

+ References

No definition available.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16(a))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Article 5

-Subsection 19, 20, 22

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

+ Details

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Period Type:	instant

LONG-TERM DEBT (Narrative) (Details) (USD $)	3 Months Ended			9 Months Ended																									3 Months Ended			3 Months Ended									0 Months Ended
LONG-TERM DEBT (Narrative) (Details) (USD $)	Feb. 24, 2013	Feb. 26, 2012	Feb. 27, 2011	Feb. 24, 2013	Feb. 26, 2012	May 27, 2012	Feb. 24, 2013 1.35% Senior Debt Due September 2015 [Member]	Nov. 25, 2012 1.35% Senior Debt Due September 2015 [Member]	May 27, 2012 1.35% Senior Debt Due September 2015 [Member]	Feb. 24, 2013 2.1% Senior Debt Due March 2018 [Member]	May 27, 2012 2.1% Senior Debt Due March 2018 [Member]	Feb. 24, 2013 3.25% Senior Debt Due September 2022 [Member]	May 27, 2012 3.25% Senior Debt Due September 2022 [Member]	Feb. 24, 2013 Unsecured Debt [Member]	Feb. 24, 2013 1.3% Senior Debt Due January 2016 [Member]	May 27, 2012 1.3% Senior Debt Due January 2016 [Member]	Feb. 24, 2013 1.9% Senior Debt Due January 2018 [Member]	May 27, 2012 1.9% Senior Debt Due January 2018 [Member]	Feb. 24, 2013 3.2% Senior Debt Due January 2023 [Member]	May 27, 2012 3.2% Senior Debt Due January 2023 [Member]	Feb. 24, 2013 4.65% Senior Debt Due January 2043 [Member]	May 27, 2012 4.65% Senior Debt Due January 2043 [Member]	Feb. 24, 2013 4.95% Senior Debt Due August 2020 (Including Ralcorp Senior Notes) [Member]	May 27, 2012 4.95% Senior Debt Due August 2020 (Including Ralcorp Senior Notes) [Member]	Feb. 24, 2013 6.625% Senior Debt Due August 2039 (Including Ralcorp Senior Notes) [Member]	May 27, 2012 6.625% Senior Debt Due August 2039 (Including Ralcorp Senior Notes) [Member]	Feb. 24, 2013 Ralcorp Callable Notes [Member]	May 27, 2012 Ralcorp Callable Notes [Member]	Feb. 24, 2013 Term Facility Agreement [Member]	Feb. 24, 2013 Ralcorp Senior Debt [Member]	Feb. 24, 2013 Base Rate [Member] Term Facility Agreement [Member]	Feb. 24, 2013 Ralcorp [Member]	Feb. 24, 2013 Ralcorp [Member]	Feb. 24, 2013 Ralcorp [Member] Secured Debt [Member]	Feb. 24, 2013 Ralcorp [Member] 4.95% Ralcorp Senior Notes [Member]	Feb. 24, 2013 Ralcorp [Member] 6.625% Senior Notes Ralcorp Due August 2019 [Member]	Feb. 24, 2013 Ralcorp [Member] Ralcorp Notes [Member]	Feb. 24, 2013 Ralcorp [Member] 7.29% Senior Notes Due August 2018 Issued by Ralcorp [Member]	Feb. 24, 2013 Ralcorp [Member] 7.39% Senior Notes Due August 2020 Issued by Ralcorp [Member]	Feb. 24, 2013 Ralcorp [Member] 7.29% Senior Notes Due August 2018 Issued by Ralcorp, Ralcorp Discharged Notes [Member]	Feb. 28, 2013 Ralcorp [Member] Ralcorp Callable Notes [Member]	Feb. 24, 2013 Ralcorp [Member] Ralcorp Callable Notes [Member]	Feb. 24, 2013 Unsecured Debt [Member]	Nov. 25, 2012 Unsecured Debt [Member]	Feb. 24, 2013 Unsecured Debt [Member] Tranche One [Member]	Nov. 25, 2012 Unsecured Debt [Member] Tranche Two [Member]	Nov. 25, 2012 Unsecured Debt [Member] Tranche Three [Member]	Feb. 24, 2013 Unsecured Debt [Member] Ralcorp [Member]
Debt Instrument [Line Items]
Senior unsecured notes														$ 716,000,000																													$ 3,975,000,000	$ 750,000,000	$ 250,000,000	$ 250,000,000	$ 250,000,000	$ 631,500,000
Debt Instrument, Interest Rate at Period End								1.35%		2.10%		3.25%			1.30%		1.90%		3.20%		4.65%		4.95%		6.625%				1.954%						4.95%	6.625%		7.29%	7.39%
Senior notes	10,351,000,000			10,351,000,000		2,938,800,000	250,000,000		0	250,000,000	0	250,000,000	0		750,000,000	0	1,000,000,000	0	1,225,000,000	0	1,000,000,000	0	300,000,000	0	450,000,000	0	460,700,000	0		33,900,000				460,700,000	33,900,000	17,200,000	16,700,000		664,500,000	33,000,000		0
New term loan facility																													1,500,000,000
Repurchase amount																																								44,800,000
Extinguishment of debt charge																																	1,300,000
Debt fair value adjustment																																									101,800,000
Unsecured debt																													1,500,000,000
Term loan repayment percent																													2.50%
Libor Plus	2.00%			2.00%																											1.75%
Interest capitalized				(56,600,000)	0																											52,100,000
Debt issuance costs																																27,000,000
Fair value adjustment	163,800,000			163,800,000
Proceeds from termination of interest rate swap contract			31,500,000
Reduction of net interest expense due to impact of interest rate swap contracts	$ 2,300,000	$ 2,200,000		$ 6,800,000	$ 7,700,000