CONDENSED CONSOLIDATED STATEMENTS OF MEMBER'S EQUITY - USD ($) $ in Millions	Member's Interest [Member]	Accumulated Other Comprehensive (Loss)/Income [Member]	Accumulated Deficit [Member]	Total
Balance at Jun. 30, 2018	$ 1,876.6	$ (15.5)	$ (373.5)	$ 1,487.6
Stock-based compensation	26.3			26.3
Foreign currency translation adjustment		8.2		8.2
Capital distribution to parent	(0.2)			(0.2)
Defined benefit pension plan adjustment		(1.9)		(1.9)
Net income			22.1	22.1
Balance at Sep. 30, 2018	1,902.7	(9.2)	(351.4)	1,542.1
Balance at Jun. 30, 2019	1,576.2	(23.9)	(223.5)	1,328.8
Stock-based compensation	26.3			26.3
Foreign currency translation adjustment		(14.8)		(14.8)
Defined benefit pension plan adjustment		0.4		0.4
Net income			17.9	17.9
Balance at Sep. 30, 2019	$ 1,602.5	$ (38.3)	$ (205.6)	$ 1,358.6