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-Publisher FASB
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-Topic 260
-SubTopic 10
-Section 50
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-Topic 210
-SubTopic 10
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NET LOSS PER SHARE - Anti-dilutive Common Stock Equivalents (Details) - shares shares in Thousands	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 01, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common stock equivalents excluded from diluted loss per share calculation	25,710	25,153
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common stock equivalents excluded from diluted loss per share calculation	16,294	15,722
Unvested RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common stock equivalents excluded from diluted loss per share calculation	1,260	1,275
2024 convertible senior notes \| Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total anti-dilutive common stock equivalents excluded from diluted loss per share calculation	8,156	8,156
2024 convertible senior notes \| Convertible Senior Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stated interest rate	2.625%		2.625%