DISCONTINUED OPERATIONS AND THE FORMATION OF ARDENT MILLS (Discontinued Operations Comparative Financial Results) (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 30, 2015	Aug. 24, 2014
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 894.2	$ 954.2
Net gain on sale of businesses	0.0	626.5
Goodwill and long-lived asset impairment charges	(1,812.3)	0.0
Income from operations of discontinued operations before income taxes and equity method investment earnings	20.7	1.4
Income (loss) before income taxes	(1,791.6)	627.9
Income tax expense (benefit)	(472.0)	239.6
Income (loss) from discontinued operations, net of tax	$ (1,319.6)	$ 388.3