Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ (18.9)	$ 12.9
Income tax expense as a percent of pre-tax income (loss)	28.60%	23.80%
Tax benefit associated with debt prepayment costs	$ 2.0
Tax benefit related to the impact of restructuring charges	2.4
Tax expense (benefit) attributable to employee share-based compensation	1.2	$ (0.4)
Operating loss carryforward, income tax expense (benefit), CARES act	$ 7.0