Cover Page - USD ($)	12 Months Ended
	Mar. 31, 2022	May 16, 2022	Sep. 30, 2021
Document Information [Line Items]
Document Type	10-K/A
Amendment Flag	true
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity File Number	001-38961
Entity Registrant Name	Change Healthcare Inc.
Entity Central Index Key	0001756497
Current Fiscal Year End Date	--03-31
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-2152098
Entity Address, Address Line One	424 Church Street
Entity Address, Address Line Two	Suite 1400
Entity Address, City or Town	Nashville
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37219
City Area Code	615
Local Phone Number	932-3000
Title of 12(b) Security	Common Stock, par value $.001 per share
Trading Symbol	CHNG
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Entity Public Float			$ 5,262,545,459
Entity Common Stock, Shares Outstanding		318,546,445
Auditor Name	Deloitte & Touche LLP
Auditor Firm ID	34
Auditor Location	Atlanta, GA
Amendment Description	EXPLANATORY NOTE This Amendment No. 1 on Form 10-K/A (this “Form 10-K/A”) amends the Annual Report on Form 10-K (the “Initial Form 10-K,” and as amended by this Form 10-K/A, the “Form 10-K”) of Change Healthcare Inc. (the “Company,” “Change Healthcare,” “our,” or “we”) for the fiscal year ended March 31, 2022, originally filed with the U.S. Securities and Exchange Commission (the “SEC”) on May 26, 2022. This Form 10-K/A is being filed to amend Part III to include information required by Items 10 through 14. This information was previously omitted from the Initial Form 10-K in reliance on General Instruction G(3) to Form 10-K. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), Part III, including Items 10 through 14 of the Initial Form 10-K, is hereby amended and restated in its entirety. This Form 10-K/A consists solely of the preceding cover page, this explanatory note, the information required by Part III, Items 10, 11, 12, 13, and 14 of Form 10-K, a signature page and certifications required to be filed as exhibits. We are amending Part IV solely to add those certifications. Except as described above, no other changes have been made to the Initial Form 10-K. Except as otherwise indicated herein, this Form 10-K/A continues to speak as of the date of the Initial Form 10-K, and we have not updated the disclosures contained therein to reflect any events that occurred subsequent to the date of the Initial Form 10-K. Unless otherwise indicated herein, all page references contained in this Form 10-K/A are to the pages of this Form 10-K/A, and not to the Initial Form 10-K.