Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2019	Nov. 11, 2019
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Registrant Name	Change Healthcare Inc.
Entity Central Index Key	0001756497
Current Fiscal Year End Date	--03-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		124,948,388
Common Stock [Member]
Title of 12(b) Security	Common Stock, par value $.001 per share
Trading Symbol	CHNG
Security Exchange Name	NASDAQ
Tangible Equity Units [Member]
Title of 12(b) Security	6.00% Tangible Equity Units
Trading Symbol	CHNGU
Security Exchange Name	NASDAQ