Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Feb. 24, 2013	Feb. 26, 2012
Cash flows from operating activities:
Net income	$ 592.1	$ 557.9
Income from discontinued operations	0	0.1
Income from continuing operations	592.1	557.8
Adjustments to reconcile income from continuing operations to net cash flows from operating activities:
Depreciation and amortization	299.2	277.1
Asset impairment charges	19.8	7.9
Gain on acquisition of controlling interest in Agro Tech Foods Ltd.	0	(58.7)
Earnings of affiliates in excess of distributions	(11.8)	(11.0)
Share-based payments expense	52.8	35.2
Contributions to pension plans	(14.7)	(77.0)
Pension expense	16.5	18.6
Other items	(37.6)	(1.7)
Change in operating assets and liabilities excluding effects of business acquisitions and dispositions:
Accounts receivable	(12.9)	(54.6)
Inventory	(234.9)	(170.5)
Deferred income taxes and income taxes payable, net	68.6	91.9
Prepaid expenses and other current assets	(32.7)	(7.9)
Accounts payable	43.9	98.0
Accrued payroll	88.1	46.9
Other accrued liabilities	(54.7)	24.5
Net cash flows from operating activities — continuing operations	781.7	776.5
Net cash flows from operating activities — discontinued operations	0	2.9
Net cash flows from operating activities	781.7	779.4
Cash flows from investing activities:
Additions to property, plant and equipment	(289.1)	(239.1)
Sale of property, plant and equipment	7.6	7.5
Purchase of businesses, net of cash acquired	(5,017.7)	(306.6)
Purchase of intangible assets	0	(62.5)
Other	(1.8)	0
Net cash flows from investing activities	(5,301.0)	(600.7)
Cash flows from financing activities:
Net short-term borrowings	(38.9)	3.0
Issuance of long-term debt	6,217.7	0
Debt issuance costs	(56.6)	0
Repayment of long-term debt	(911.8)	(355.6)
Issuance of ConAgra Foods, Inc. common shares	269.3	0
Repurchase of ConAgra Foods, Inc. common shares	(245.0)	(100.2)
Cash dividends paid	(296.6)	(288.8)
Exercise of stock options and issuance of other stock awards	197.2	199.3
Other items	2.2	1.0
Net cash flows from financing activities	5,137.5	(541.3)
Effect of exchange rate changes on cash and cash equivalents	2.6	(5.6)
Net change in cash and cash equivalents	620.8	(368.2)
Cash and cash equivalents at beginning of period	103.0	972.4
Cash and cash equivalents at end of period	$ 723.8	$ 604.2