DISCONTINUED OPERATIONS (Assets and Liabilities Classified as Held for Sale) (Details) - USD ($) $ in Millions	May. 31, 2015	May. 25, 2014	May. 26, 2013	May. 27, 2012
Discontinued Operations and Disposal Groups [Abstract]
Cash and cash equivalents	$ 0.0	$ 41.8	$ 33.0	$ 17.1
Receivables, less allowance for doubtful accounts of $1.2		172.4
Receivable on sale of flour milling assets		162.4
Inventories		215.6
Prepaids and other current assets		39.5
Current assets held for sale	0.0	631.7
Property, plant and equipment, net		186.8
Goodwill		8.0
Brands, trademarks and other intangibles, net		0.9
Other assets		3.2
Noncurrent assets held for sale	0.0	198.9
Current installments of long-term debt		0.1
Accounts payable		143.1
Accrued payroll		2.3
Other accrued liabilities		19.3
Current liabilities held for sale	0.0	164.8
Senior long-term debt, excluding current installments		0.1
Other noncurrent liabilities		1.9
Noncurrent liabilities held for sale	$ 0.0	$ 2.0