Summary of Significant Accounting Policies (Narratives) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jul. 01, 2019
Significant Accounting Policies [Line Items]
Intangible asset and goodwill impairment		$ 0	$ 0
Hardware products warranty period (in years)	1 year
Software products warranty period (in days)	90 days
Minimum percentage of tax benefit realized upon settlement	50.00%
Operating lease, right-of-use asset	$ 51,274,000
Operating lease, liability	$ 69,434,000
ASU 2016-02
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset				$ 64,600,000
Operating lease, liability				$ 79,500,000
Minimum | Purchased Software
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	1 year
Maximum | Purchased Software
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	4 years
Computer Equipment | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	1 year
Computer Equipment | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	4 years
Office Equipment | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	3 years
Office Equipment | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	7 years
Leasehold Improvements | Minimum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	2 years
Leasehold Improvements | Maximum
Significant Accounting Policies [Line Items]
Estimated useful lives of property and equipment	10 years