Nature of Business and Organization (Narrative) (Details) $ / shares in Units, $ in Thousands			6 Months Ended
	Jul. 01, 2019 USD ($) shares	Jun. 26, 2019 $ / shares shares	Sep. 30, 2020 $ / shares shares	Sep. 30, 2019 USD ($)	Mar. 31, 2020 $ / shares shares
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Stock split conversion ratio		126.4
Common Stock, shares authorized		9,000,000,000	9,000,000,000		9,000,000,000
Common Stock, par value | $ / shares		$ 0.001	$ 0.001		$ 0.001
Preferred stock, shares authorized		900,000,000	900,000,000		900,000,000
Preferred stock, par value | $ / shares		$ 0.001	$ 0.001		$ 0.001
Share offering	49,285,713
Proceeds from initial public offering | $	$ 608,679			$ 608,679
Common Class X [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Common Stock, shares authorized		1
Common Stock, par value | $ / shares		$ 0.001
Tangible Equity Units [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Tangible equity unit offering	5,750,000
Proceeds from tangible equity units | $	$ 278,875
Change Healthcare LLC [Member]
Organization, Consolidation and Presentation of Financial Statements [Line Items]
Ownership percentage			100.00%