Closing market price of common stock.

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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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Share based compensation arrangement by Share based payment award award expiration period.

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Share Based Compensation Arrangement By Share Based Payments Award Equity Instruments Other Than Options Vested In Period Intrinsic Value.

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Share Based Payments.

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Share Based Payments Textuals Abstract.

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Unrecognized Compensation Expense.

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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.

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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.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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

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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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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph A240
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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified equity-based compensation) recognized on the entity's tax return exceeds compensation cost from equity-based compensation recognized in financial statements. This element reduces net cash provided by operating activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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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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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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-Paragraph 2
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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).

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

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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 29, 2011	May 30, 2010	May 31, 2009	Sep. 25, 2009 ConAgra Foods 2009 Stock Plan [Member]	May 29, 2011 Share Unit Plan [Member]	May 30, 2010 Share Unit Plan [Member]	May 31, 2009 Share Unit Plan [Member]	May 29, 2011 Performance-Based Share Plan [Member]	May 30, 2010 Performance-Based Share Plan [Member]	May 31, 2009 Performance-Based Share Plan [Member]	May 29, 2011 Restricted Cash Plan [Member]	May 30, 2010 Restricted Cash Plan [Member]	May 31, 2009 Restricted Cash Plan [Member]	May 29, 2011 Stock Options [Member]	May 30, 2010 Stock Options [Member]	May 31, 2009 Stock Options [Member]	May 29, 2011 Maximum [Member]	May 29, 2011 Minimum [Member]
Share-Based Payments (Textuals) [Abstract]
Share issued under the plan	27.5			29.5
Total intrinsic value of share units vested	$ 9.3	$ 8.4	$ 0.3
Compensation expense					21.2	19.6	17.8	4.0	14.7	5.6				19.9	22.0	23.8
Tax benefit related to compensation expense					7.9	7.3	6.8	1.5	5.4	2.1				7.4	8.2	9.1
Total unrecognized compensation expense					25.3
Weighted Average Grant-Date Fair Value	$ 3.31	$ 2.73	$ 2.84		$ 21.55	$ 19.41	$ 21.00
Intrinsic value of share units vested					14.5	18.7	18.7	7.4	24.8	11.7
Unrecognized Compensation Expense								7.6						16.6
Weighted average period					2.0			2.0						1.3
Reduced (increased) net operating cash flows											0	(1.5)	0.7
Increased (decreased) net financing cash flows											0	(1.5)	0.7
Options become exercisable under various vesting schedules																	5 years	3 years
Options become expired under various vesting schedules																	10 years	7 years
Share Based Payments (Additional Textuals) [Abstract]
Shares reserved for granting additional options	27.5			29.5
Stock option granted	6.2	7.9	7.7
Share units granted	1.60	1.10	1.00
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%	300.00%	300.00%
Weighted Average Grant-Date Fair Value	$ 3.31	$ 2.73	$ 2.84		$ 21.55	$ 19.41	$ 21.00
Closing market price of common stock	$ 25.04
Total unrecognized compensation expense					25.3
Cash received from option exercises	71.6	70.3	6.1
Actual tax benefit realized for the tax deductions from option exercises	$ 3.4	$ 3.1	$ 0.1
Weighted average period					2.0			2.0						1.3