PAYMENT-IN-KIND NOTES RECEIVABLE (Details) (USD $)	12 Months Ended
	May 26, 2013	May 27, 2012	May 29, 2011	May 30, 2010	May 30, 2009 tranches
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Tranches					3
Carrying amount of debt securities received for first tranche				$ 115,400,000
Carrying amount of debt securities received for second and third tranches				554,200,000
Gain due to receipt of payment in advance	0	0	(25,000,000)	25,000,000
Trading and merchandising operations
Accounts, Notes, Loans and Financing Receivable [Line Items]
Face amount of debt securities received in proceeds from divestiture of businesses					550,000,000.0
Payment-in-kind debt securities issued by the purchaser, initial estimated fair value					479,400,000
Notes due June 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes issued, principal amount					99,990,000
Notes issued, coupon rate					10.50%
Notes due June 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes issued, principal amount					200,035,000
Notes issued, coupon rate					10.75%
Notes due June 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes issued, principal amount					$ 249,975,000
Notes issued, coupon rate					11.00%