Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Inventory, Net [Abstract]
Finished goods	$ 623,868		$ 623,868		$ 492,387
Work in process	82,108		82,108		43,598
Purchased parts and raw materials	160,250		160,250		134,203
Total inventories	866,226		866,226		$ 670,188
Provision for excess and obsolete inventory	4,700	$ 4,700	21,600	$ 17,300
Write-down to net realizable value	$ (800)	$ 5,700	$ (3,500)	$ 7,300