Percentage of the targeted number of performance shares maximum range and will be paid in shares of common stock.

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Percentage of the targeted number of performance shares, minimum range and will be paid in shares of common stock.

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- Definition

Percentage of target incentive required payout.

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- Definition

Share based compensation arrangement by share based payment award, equity instruments other than options, outstanding, exercises in period, total intrinsic value

+ References

No definition available.

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- Definition

Unrecognized compensation expense.

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No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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-Paragraph 64

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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- Definition

Amount of excess tax benefit (tax deficiency) that arises when compensation cost from non-qualified share-based compensation recognized on the entity's tax return exceeds (is less than) compensation cost from equity-based compensation recognized in financial statements. Excess tax benefit (tax deficiency) increases (decreases) net cash provided by financing activities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 20

-Section 55

-Paragraph 24

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Amount of excess tax benefit (tax deficiency) that arises when compensation cost from non-qualified equity-based compensation recognized on the entity's tax return exceeds (is less than) compensation cost from equity-based compensation recognized in financial statements. Excess tax benefit (tax deficiency) reduces (increases) net cash provided by operating activities.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-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 Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

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- Definition

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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- Definition

Net number of share options (or share units) granted during the period.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-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 Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)(1)

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- Definition

Price of a single share of a number of saleable stocks of a company.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

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Share-Based Payments (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended				12 Months Ended
	May 27, 2012	May 29, 2011	May 30, 2010	Sep. 25, 2009 ConAgra foods 2009 stock plan [Member]	May 27, 2012 Stock Options [Member]	May 29, 2011 Stock Options [Member]	May 30, 2010 Stock Options [Member]	May 27, 2012 Share Unit Plans [Member]	May 29, 2011 Share Unit Plans [Member]	May 30, 2010 Share Unit Plans [Member]	May 27, 2012 Performance based share plan [Member]	May 29, 2011 Performance based share plan [Member]	May 30, 2010 Performance based share plan [Member]	May 27, 2012 Restricted cash plan [Member]	May 29, 2011 Restricted cash plan [Member]	May 30, 2010 Restricted cash plan [Member]	May 27, 2012 Performance period ending 2012 [Member]	May 27, 2012 Performance period ending 2013 [Member]	May 27, 2012 Performance period ending 2014 [Member]
Share Based Payments (Textual) [Abstract]
Shares issued under the plan	22.9			29.5
Compensation expense					$ 15.4	$ 19.9	$ 22.0	$ 25.5	$ 21.2	$ 19.6	$ 0.8	$ 4.0	$ 14.7
Weighted average grant date fair value, options					$ 3.26	$ 3.31	$ 2.73
Weighted average grant date fair value								$ 26.11	$ 21.55	$ 19.41
Total intrinsic value of share units vested	41.5				41.5	9.3	8.4
Total intrinsic value of share units vested, other than options								23.2	14.5	18.7	16.0	7.4	24.8
Tax benefit related to Compensation expense					5.7	7.4	8.2	9.5	7.9	7.3	0.3	1.5	5.4
Unrecognized compensation expense					12.4			33.9			6.8
Weighted average period					1 year 2 months 12 days			1 year 10 months 24 days			2 years
Reduced (increased) net operating cash flows														8.7	0	(1.5)
Increased (decreased) net financing cash flows														8.7	0	(1.5)
Percentage of the targeted number of performance shares, minimum range and will be paid in shares of common stock																	0.00%	0.00%	0.00%
Percentage of the targeted number of performance shares, maximum range and will be paid in shares of common stock																	300.00%	200.00%	220.00%
Percentage of target incentive required payout											25.00%
Share Based Payments (Additional Textual) [Abstract]
Stock option granted	4.1	6.2	7.9
Cash received from option exercises	217.8	71.6	70.3
Actual tax benefit realized for the tax deductions from option exercises	$ 15.4	$ 3.4	$ 3.1
Shares units granted	1.80	1.60	1.10
Closing market price of our common stock	$ 25.25