CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 8.9	$ 13.5
Other comprehensive income (loss), net of tax
Pension and postretirement benefits, net of tax of $(2.3) and $(1.8), respectively	3.7	3.0
Net loss on derivative instruments, net of tax of $3.4 and $11.0, respectively	(5.5)	(18.2)
Foreign currency translation	(3.3)	(7.9)
Other comprehensive loss	(5.1)	(23.1)
Comprehensive income (loss)	$ 3.8	$ (9.6)