CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2015	Aug. 31, 2014
Income Statement [Abstract]
Revenues	$ 191.2	$ 190.5
Operating costs and expenses:
Cost of goods sold	114.5	113.4
Selling, general and administrative expenses (exclusive of depreciation and amortization)	145.7	150.8
Depreciation and amortization	10.5	13.1
Total operating costs and expenses	270.7	277.3
Operating income (loss)	(79.5)	(86.8)
Interest income (expense}, net	(0.1)	(0.9)
Earnings (loss) from continuing operations before income taxes	(79.6)	(87.7)
Provision (benefit) for income taxes	(30.7)	(33.8)
Earnings (loss) from continuing operations	(48.9)	(53.9)
Earnings (loss) from discontinued operations, net of tax	(0.5)	19.8
Net income (loss)	$ (49.4)	$ (34.1)
Basic:
Earnings (loss) from continuing operations (in Dollars per share)	$ (1.46)	$ (1.67)
Earnings (loss) from discontinued operations, net of tax (in Dollars per share)	(0.02)	0.62
Net income (loss) (in Dollars per share)	(1.48)	(1.05)
Diluted:
Earnings (loss) from continuing operations (in Dollars per share)	(1.46)	(1.67)
Earnings (loss) from discontinued operations, net of tax (in Dollars per share)	(0.02)	0.62
Net income (loss) (in Dollars per share)	(1.48)	(1.05)
Dividends declared per class A and common share (in Dollars per share)	$ 0.15	$ 0.15