DISCONTINUED OPERATIONS AND THE FORMATION OF ARDENT MILLS (Discontinued Operations Comparative Financial Results) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Nov. 29, 2015	Nov. 23, 2014	Nov. 29, 2015	Nov. 23, 2014
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 961.4	$ 1,013.6	$ 1,855.6	$ 1,967.8
Net gain on sale of businesses	0.0	0.8	0.0	627.3
Goodwill and long-lived asset impairment charges	(86.3)	(240.9)	(1,898.6)	(240.9)
Income from operations of discontinued operations before income taxes and equity method investment earnings	85.6	33.5	106.3	34.9
Income (loss) before income taxes	(0.7)	(206.6)	(1,792.3)	421.3
Income tax expense (benefit)	5.8	(3.8)	(466.2)	235.8
Income (loss) from discontinued operations, net of tax	$ (6.5)	$ (202.8)	$ (1,326.1)	$ 185.5

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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