Equity Method Investment in Change Healthcare LLC (Summarized Financial Information of the Joint Venture) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity Method Investment in Change Healthcare LLC [Abstract]
Total revenue	$ 795,811	$ 800,190	$ 1,651,367	$ 1,623,453
Cost of operations (exclusive of depreciation and amortization)	331,234	327,563	658,181	664,993
Customer postage	57,110	62,404	115,594	127,962
Net income (loss)	$ (130)	$ 113,440	$ 71,785	$ 125,946

Equity Method Investment, Summarized Financial Information, Cost of Operations, Exclusive of Depreciation and Amortization

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- Definition

Equity Method Investment, Summarized Financial Information, Customer Postage

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- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

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Amount of revenue from sale of product and rendering of service reported by equity method investee.

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