Income Taxes - Schedule of Provision (Benefit) for Income Taxes from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Current:
Federal	$ (37.3)	$ 1.3	$ 23.2
State	(0.6)	1.8	4.4
Foreign	3.2	1.9	4.9
Total current	(34.7)	5.0	32.5
Deferred:
Federal	(22.6)	(1.8)	13.1
State	(10.5)	0.3	3.6
Foreign	(0.5)	1.1	(0.2)
Total deferred	(33.6)	(0.4)	16.5
Total income tax (benefit) expense	$ (68.3)	$ 4.6	$ 49.0