CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2019	Feb. 28, 2018
Income Statement [Abstract]
Revenues	$ 360.1	$ 344.7	$ 1,183.2	$ 1,132.2
Operating costs and expenses:
Cost of goods sold	176.9	166.4	564.6	535.6
Selling, general and administrative expenses	190.9	186.7	584.3	573.9
Depreciation and amortization	13.7	11.0	41.3	30.0
Asset impairments	0.0	4.3	0.0	11.0
Total operating costs and expenses	381.5	368.4	1,190.2	1,150.5
Operating income (loss)	(21.4)	(23.7)	(7.0)	(18.3)
Interest income (expense), net	1.0	0.2	2.3	0.5
Other components of net periodic benefit (cost)	(0.4)	(39.8)	(1.1)	(55.4)
Earnings (loss) before income taxes	(20.8)	(63.3)	(5.8)	(73.2)
Provision (benefit) for income taxes	(8.2)	(14.1)	(3.5)	(17.4)
Net income (loss)	$ (12.6)	$ (49.2)	$ (2.3)	$ (55.8)
Basic and diluted earnings (loss) per Share of Class A and Common Stock
Basic (in Dollars per share)	$ (0.36)	$ (1.41)	$ (0.07)	$ (1.59)
Diluted (in Dollars per share)	$ (0.36)	$ (1.41)	$ (0.07)	$ (1.59)