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Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Jun. 30, 2018
Inventory, Net [Abstract] |  |  |  |  |
Finished goods | $ 525,344 |  | $ 525,344 |  | $ 633,348
Work in process | 84,293 |  | 84,293 |  | 61,162
Purchased parts and raw materials | 151,476 |  | 151,476 |  | 158,742
Total inventories | 761,113 |  | 761,113 |  | $ 853,252
Provision for lower of cost or market and excess and obsolete inventory | 4,700 | $ 1,900 | 17,300 | $ 6,200 |
Provision for adjusting cost to net realizable value | $ 5,700 |  | $ 7,300 |  |

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