Leases - Lease expense and supplemental cash flow information (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2020 USD ($)
Leases [Abstract]
Operating lease expense	$ 50,267
Short-term lease cost	8,566
Variable lease cost	5,108
Total lease cost	63,941
Cash paid for amounts included in the measurement of operating lease liabilities	48,562
Right-of-use assets obtained in exchange for operating lease obligations	$ 41,069