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Employee Benefit Plans (Shares Reserved for Issuance) (Details) - shares shares in Thousands | Dec. 31, 2018 | Jun. 30, 2018
--- | --- | ---
Class Of Stock [Line Items] |  |
Shares reserved for issuance | 23,219 | 27,382
2014 Employee Stock Purchase Plan |  |
Class Of Stock [Line Items] |  |
Shares reserved for issuance | 4,084 | 5,365
Employee Stock Options and Awards Outstanding |  |
Class Of Stock [Line Items] |  |
Shares reserved for issuance | 11,577 | 12,060
2013 Equity Incentive Plan Shares Available for Grant |  |
Class Of Stock [Line Items] |  |
Shares reserved for issuance | 7,558 | 9,957

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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