Employee Benefit Plans (Shares Reserved for Issuance) (Details) - shares shares in Thousands	Mar. 31, 2020	Jun. 30, 2019
Class Of Stock [Line Items]
Shares reserved for issuance	30,818	29,002
2014 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Shares reserved for issuance	7,364	10,085
Employee Stock Options and Awards Outstanding
Class Of Stock [Line Items]
Shares reserved for issuance	12,086	10,455
2013 Equity Incentive Plan Shares Available for Grant
Class Of Stock [Line Items]
Shares reserved for issuance	11,368	8,462