Equity Incentive Plan - Vesting (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Employee and Non Employees Stock Option
Equity Transactions
Intrinsic value of options exercised			$ 0.2	$ 24.3
Unrecognized compensation	$ 0.0		0.0
Stock based compensation expense	0.0	$ 0.0	0.0	0.0
Restricted Stock
Equity Transactions
Unrecognized compensation	25.5		25.5
Stock based compensation expense	4.2	5.6	9.5	11.1
Performance Share Units
Equity Transactions
Unrecognized compensation	7.2		7.2
Stock based compensation expense	$ (3.6)	$ 3.4	$ (0.6)	$ 6.8

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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