Equity Method Investment in Change Healthcare LLC (Reconciliation of Other Investments) (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2020 USD ($)
Marketable Securities [Line Items]
Balance
Balance
Forward Contracts [Member]
Marketable Securities [Line Items]
Acquisition	232,928
Change in fair value	14,836
TEU conversions of forward purchase contracts	(31,000)
Settlement of investment in forward purchase contracts	(216,764)	[1]
Debt Securities [Member]
Marketable Securities [Line Items]
Acquisition	45,946
Receipt of payments on debt securities	(7,332)
Change in fair value	1,489
Elimination of investment in debt securities	$ (40,103)	[2]

[1] Amount is included as part of the Merger purchase price. See Note 2, Business Combinations for additional information.

[2] Amount is eliminated as part of consolidation.