Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Inventory, Net [Abstract]
Finished goods	$ 553,950		$ 656,817
Work in process	68,322		38,146
Purchased parts and raw materials	151,584		156,535
Total inventories	773,856		$ 851,498
Provision for excess and obsolete inventory	(800)	$ 10,100
Write-down to net realizable value	$ 900	$ (1,800)