Income Taxes - Schedule of Provision (Benefit) for Income Taxes from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Current:
Federal	$ 23.2	$ 22.6	$ (24.5)
State	4.4	3.5	(1.1)
Foreign	4.9	6.7	7.2
Total current	32.5	32.8	(18.4)
Deferred:
Federal	13.1	(66.0)	38.7
State	3.6	4.8	3.5
Foreign	(0.2)	0.1	(0.6)
Total deferred	16.5	(61.1)	41.6
Total income tax expense (benefit)	$ 49.0	$ (28.3)	$ 23.2