Leases (Additional Information) (Detail) $ in Thousands	9 Months Ended
	Mar. 31, 2020 USD ($) facility location	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Option to terminate lease	true
Option to extend lease	true
Extension term	5 years
Number of facilities owned by lessor | facility	4
Number of operating lease locations the entity has agreements to sublease either a portion or the full leased space | location	23
Operating Lease, Right-of-Use Asset	$ 188,629			$ 0	$ 0
Operating Lease, Liability	$ 231,121
Operating Lease, Lease Not yet Commenced, Contract One [Member] | Forecast [Member]
Lessee, Lease, Description [Line Items]
Lease term on property lease that has not yet commenced			11 years
Operating Lease, Right-of-Use Asset			$ 9,700
Operating Lease, Liability			$ 9,700
Operating Lease, Lease Not yet Commenced, Contract Two [Member] | Forecast [Member]
Lessee, Lease, Description [Line Items]
Lease term on property lease that has not yet commenced		10 years
Operating Lease, Right-of-Use Asset		$ 10,100
Operating Lease, Liability		$ 10,100