Restructuring, Impairments,- and Related Charges, Net of Reversals (Narratives) (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2020 USD ($) Employee	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 2,219	$ 5,323	$ 6,455	$ 4,122
Restructuring and impairment charges, net of reversals	$ 22,000	5,100	8,100
2020 Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Number of employee affected | Employee	320
Additional severance and benefits charges	$ 5,400
Reduction in force or severance and benefits	8,100
Facility related charges	8,500
Severance and benefits charges	13,500
Impairment of ROU assets	6,700
Impairment of Long-Lived Assets Held-for-use	900
Other charges related to previously impaired facilities	$ 900
2019 Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Additional severance and benefits charges		1,100
Severance and benefits charges		3,700
2019 Reduction-in-force | Non-Cancelable Lease Payments
Restructuring Cost and Reserve [Line Items]
Charges for changes to estimates for accrued lease costs		$ 300
2018 Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Severance and benefits charges			7,900
2018 Reduction-in-force | Non-Cancelable Lease Payments
Restructuring Cost and Reserve [Line Items]
Charges for changes to estimates for accrued lease costs			$ 200