Summary of Significant Accounting Policies - Property and Equipment (Details)		9 Months Ended
	Mar. 31, 2019	Dec. 31, 2019
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life (in years)		40 years
Computers and related equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life (in years)	4 years	4 years
Computers and related equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life (in years)	5 years	7 years
Furniture and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life (in years)		3 years
Furniture and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life (in years)		15 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life (in years)		20 years