Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income tax benefit	$ 5.6	$ 10.7	$ 16.1	$ 29.7
Income tax benefit as a percent of pre-tax loss	16.00%	11.20%	26.70%	18.40%
Impact of non-deductible goodwill impairment charge		$ 52.8
Tax benefit associated with debt prepayment costs				$ 2.0
Tax benefit related to the impact of restructuring charges				2.4
Tax benefit attributable to employee share-based compensation				$ (1.2)
Operating loss carryforward, income tax benefit, CARES act			$ 7.0
Effective income tax rate reconciliation, excluding non-deductible expense, impairment losses, percent		24.80%		27.10%
Impact of non-deductive expenses				$ 52.8