Leases (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Operating lease expense	$ 1.1	$ 0.9	$ 2.9	$ 2.9
Short-term Lease [Member]
Operating lease expense	$ 1.0	$ 0.8	$ 3.1	$ 3.5
Minimum [Member]
Operating leases have a remaining lease term			1 year
Maximum [Member]
Operating leases have a remaining lease term			5 years