Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)		$ (112,210)	$ (947,597)	$ (52,012)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		591,048	30,838
Amortization of capitalized software developed for sale		1,326
Accretion and changes in estimate, net		11,644	15,823
Equity compensation		59,016	1,701
Deferred income tax expense (benefit)		(50,114)	(143,822)	(18,595)
Amortization of debt discount and issuance costs		32,532	2,235
Contingent consideration		(3,000)
Gain on sale of businesses		(59,143)
Loss on extinguishment of debt		8,924
(Gain) loss on other investments			(15,881)
Non-cash lease expense		29,114
Goodwill impairment charge			561,164
Loss from Equity Method Investment in the Joint Venture			380,713	70,487
Tax receivable agreement charges			164,633
Other, net		11,257	(1,110)	(661)
Changes in operating assets and liabilities:
Accounts receivable, net		(6,064)	(21,211)
Contract assets, net		158
Prepaid expenses and other assets		(87,540)	(6,219)	14,047
Accounts payable		(21,407)	7,532
Accrued expenses and other liabilities		14,178	(195,207)	(125)
Deferred revenue		166,477	11,304
Due to the Joint Venture, net			1,176	(9,733)
Net cash provided by (used in) operating activities		586,196	(153,928)	3,408
Cash flows from investing activities:
Capitalized expenditures		(246,381)	(13,002)
Acquisitions, net of cash acquired		(439,483)	330,667
Proceeds from sale of businesses		115,733
Investments in businesses
Investment in the Joint Venture			(610,784)
Investment in debt and equity securities of the Joint Venture			(278,875)
Other, net		2,099	7,332	6,503
Net cash provided by (used in) investing activities		(568,032)	(564,662)	6,503
Cash flows from financing activities:
Payments on Revolving Facility		(250,000)
Proceeds from Revolving Facility			250,000
Payments on Term Loan Facility		(315,000)
Proceeds from issuance of Senior Notes		325,000
Payments under tax receivable agreements		(20,691)
Receipts (payments) on derivative instruments		(29,538)	(890)
Employee tax withholding on vesting of equity compensation awards		(4,108)
Payments on deferred financing obligations		(19,519)
Payment of senior amortizing notes		(15,636)	(11,094)
Proceeds from exercise of equity awards		17,514
Proceeds from initial public offering, net of issuance costs			608,679
Proceeds from issuance of equity component of tangible equity units, net of issuance costs			232,929
Proceeds from issuance of debt component of tangible equity units			47,367
Other, net		(6,800)	(1,421)	(6,502)
Net cash provided by (used in) financing activities		(318,778)	1,125,570	(6,502)
Effect of exchange rate changes on cash and cash equivalents		3,310	16
Net increase (decrease) in cash and cash equivalents		(297,304)	406,996	3,409
Cash and cash equivalents at beginning of period		410,405	3,409
Cash and cash equivalents at end of period		113,101	410,405	3,409
Supplemental disclosures of cash flow information
Cash paid for interest		240,232	265,633
Cash paid for income taxes		11,169	(714)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows		41,262
Financing cash flows		642
Issuance of common stock upon exercise of equity awards:
Investment in the Joint Venture			5,077	1,297
Dividend receivable			(5,077)	1,297
Change Healthcare Inc. portion of the Joint Venture equity transactions:
Investment in the Joint Venture			13,902	(2,377)
Additional paid in capital			(11,133)	(6,043)
Accumulated other comprehensive income			(2,769)	$ (8,420)
Capitalized Expenditures:
Property and equipment, net		2,662	5,295
Other noncurrent assets, net		25,338	14,169
Intangible assets, net		1,491	2,855
Accounts payable		(11,040)	(9,843)
Accrued expenses		(18,452)	$ (12,476)
Right-of-use assets obtained in exchange for lease liabilities
Operating Leases	[1]	16,185
Finance Leases	[1]	$ 363

[1] Amounts exclude the impact of adopting ASC 842. See Note 2, Significant Accounting Policies.