Income Taxes (Summary of (Benefit)/Provision for Income Taxes from Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Current Income Taxes
Federal									$ 1.6	$ (1.3)	$ 1.7
State									6.3	8.7	4.4
Foreign									(2.1)	3.9	(1.6)
Total									5.8	11.3	4.5
Deferred Income Taxes
Federal									13.3	7.3	(8.7)
State									2.4	(2.3)	(6.9)
Foreign									(3.1)	(7.8)	2.3
Total									12.6	(2.8)	(13.3)
Provision/(benefit) for income taxes	$ 11.0	$ 0.6	$ 0.2	$ 6.6	$ (13.1)	$ 7.8	$ 11.1	$ 2.7	$ 18.4	$ 8.5	$ (8.8)