Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Finance lease liability	$ 0.0
Operating lease not yet commenced, right-of-use asset	5.4
Operating lease not yet commenced, liability	5.4
Other Operating Income (Expense)
Lessee, Lease, Description [Line Items]
Gain on completed sale leaseback transaction	4.5
Lease Term Lease One Approximately One Year
Lessee, Lease, Description [Line Items]
Operating lease not yet commenced, right-of-use asset	0.2
Operating lease not yet commenced, liability	$ 0.2
Operating lease not yet commenced, term of contract (in years)	1 year
Lease Term Least Two Approximately Five Years
Lessee, Lease, Description [Line Items]
Operating lease not yet commenced, right-of-use asset	$ 1.3
Operating lease not yet commenced, liability	$ 1.3
Operating lease not yet commenced, term of contract (in years)	5 years
Lease Term Lease Three Approximately Twelve Years
Lessee, Lease, Description [Line Items]
Operating lease not yet commenced, right-of-use asset	$ 3.9
Operating lease not yet commenced, liability	$ 3.9
Operating lease not yet commenced, term of contract (in years)	12 years
Leaseholds and Leasehold Improvements
Lessee, Lease, Description [Line Items]
Impairment loss	$ 1.4	$ 0.8	$ 3.7