Discontinued Operations and Restructuring - Change in Accrued Amounts (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2015
Disposal Group, Including Discontinued Operation, Accrued Liabilities [Roll Forward]
Beginning balance	$ 7.8	$ 3.8	$ 8.9	$ 7.1	$ 8.9
Charged to expense	4.0	0.0	4.0	0.0
Cash payments	(0.7)	(1.2)	(1.4)	(2.9)
Other	(0.9)	(0.4)	(1.3)	(2.0)
Ending balance	$ 10.2	$ 2.2	10.2	$ 2.2
One-time charges related to regulatory compliance			3.3		3.3
One-time charges related to severance costs			$ 0.7		$ 0.7