Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Total
Balance (ASC 606 [Member]) at Mar. 31, 2019			$ 35,797,000				$ 35,797,000
Balance (ASU 2018-02 [Member]) at Mar. 31, 2019			(422,000)		$ 422,000	$ 422,000
Balance at Mar. 31, 2019	$ 75,000	$ 1,153,509,000		$ (17,841,000)		(3,256,000)		$ 1,132,487,000
Balance, shares at Mar. 31, 2019	75,474,654
Equity compensation expense		5,862,000						5,862,000
Net income (loss)				(37,517,000)				(37,517,000)
Foreign currency translation adjustment						226,000		226,000
Change in fair value of interest rate caps, net of taxes						(5,431,000)		(5,431,000)
Balance at Jun. 30, 2019	$ 75,000	1,159,371,000		(19,983,000)		(8,039,000)		1,131,424,000
Balance, shares at Jun. 30, 2019	75,474,654
Balance (ASC 606 [Member]) at Mar. 31, 2019			35,797,000				35,797,000
Balance (ASU 2018-02 [Member]) at Mar. 31, 2019			(422,000)		$ 422,000	422,000
Balance at Mar. 31, 2019	$ 75,000	1,153,509,000		(17,841,000)		(3,256,000)		1,132,487,000
Balance, shares at Mar. 31, 2019	75,474,654
Net income (loss)								(131,451,000)
Unrealized gain (loss) on available for sale debt securities of the Joint Venture								1,173,000
Foreign currency translation adjustment								1,809,000
Change in fair value of interest rate caps, net of taxes								(6,741,000)
Balance (ASU 2016-13 [Member]) at Sep. 30, 2019
Balance at Sep. 30, 2019	$ 124,000	2,006,494,000		(113,918,000)		(6,593,000)		1,886,107,000
Balance, shares at Sep. 30, 2019	124,935,806
Balance at Jun. 30, 2019	$ 75,000	1,159,371,000		(19,983,000)		(8,039,000)		1,131,424,000
Balance, shares at Jun. 30, 2019	75,474,654
Equity compensation expense		8,585,000						8,585,000
Issuance of Change Healthcare Inc. common stock upon initial public offering	$ 49,000	608,630,000						608,679,000
Issuance of Change Healthcare Inc. common stock upon initial public offering, shares	49,285,713
Effect of initial public offering issuance costs on Joint Venture equity		(4,160,000)						(4,160,000)
Issuance of tangible equity units		232,929,000						232,929,000
Issuance of Change Healthcare Inc. common stock upon exercise of equity awards		1,139,000						1,139,000
Issuance of Change Healthcare Inc. common stock upon exercise of equity awards, shares	175,439
Net income (loss)				(93,935,000)				(93,935,000)
Unrealized gain (loss) on available for sale debt securities of the Joint Venture						1,173,000		1,173,000
Foreign currency translation adjustment						1,583,000		1,583,000
Change in fair value of interest rate caps, net of taxes						(1,310,000)		(1,310,000)
Balance (ASU 2016-13 [Member]) at Sep. 30, 2019
Balance at Sep. 30, 2019	$ 124,000	2,006,494,000		(113,918,000)		(6,593,000)		1,886,107,000
Balance, shares at Sep. 30, 2019	124,935,806
Balance (ASU 2016-13 [Member]) at Mar. 31, 2020			(417,000)				(417,000)
Balance at Mar. 31, 2020	$ 303,000	4,222,580,000		(930,064,000)		(7,372,000)		3,285,447,000
Balance, shares at Mar. 31, 2020	303,428,142
Equity compensation expense		8,780,000						8,780,000
Issuance of common stock under equity compensation plans	$ 1,000	2,143,000						2,144,000
Issuance of common stock under equity compensation plans, shares	341,230
Net income (loss)				(58,694,000)				(58,694,000)
Foreign currency translation adjustment						6,353,000		6,353,000
Change in fair value of interest rate caps, net of taxes						(4,184,000)		(4,184,000)
Other		(75,000)						(75,000)
Balance at Jun. 30, 2020	$ 304,000	4,233,428,000		(989,175,000)		(5,203,000)		3,239,354,000
Balance, shares at Jun. 30, 2020	303,769,372
Balance (ASU 2016-13 [Member]) at Mar. 31, 2020			$ (417,000)				(417,000)
Balance at Mar. 31, 2020	$ 303,000	4,222,580,000		(930,064,000)		(7,372,000)		3,285,447,000
Balance, shares at Mar. 31, 2020	303,428,142
Net income (loss)								(101,316,000)
Foreign currency translation adjustment								11,574,000
Change in fair value of interest rate caps, net of taxes								(6,180,000)
Balance (ASU 2016-13 [Member]) at Sep. 30, 2020							417,000
Balance at Sep. 30, 2020	$ 304,000	4,242,721,000		(1,031,797,000)		(1,978,000)		3,209,250,000
Balance, shares at Sep. 30, 2020	304,426,569
Balance at Jun. 30, 2020	$ 304,000	4,233,428,000		(989,175,000)		(5,203,000)		3,239,354,000
Balance, shares at Jun. 30, 2020	303,769,372
Equity compensation expense		12,372,000						12,372,000
Issuance of common stock under equity compensation plans		408,000						408,000
Issuance of common stock under equity compensation plans, shares	911,961
Employee tax withholding on vesting of equity compensation awards	$ (254,764)	(3,131,000)						(3,131,000)
Net income (loss)				(42,622,000)				(42,622,000)
Foreign currency translation adjustment						5,221,000		5,221,000
Change in fair value of interest rate caps, net of taxes						(1,996,000)		(1,996,000)
Other		(356,000)						(356,000)
Balance (ASU 2016-13 [Member]) at Sep. 30, 2020							$ 417,000
Balance at Sep. 30, 2020	$ 304,000	$ 4,242,721,000		$ (1,031,797,000)		$ (1,978,000)		$ 3,209,250,000
Balance, shares at Sep. 30, 2020	304,426,569