Defined Contribution And Other Employee Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Union-Sponsored Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Costs related to union-sponsored defined contribution plan	$ 0.7	$ 0.7	$ 0.7