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Equity Method Investment in Change Healthcare LLC (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 01, 2019
Dec. 31, 2019
Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]      
Ownership percentage acquired in exchange   30.00% 30.00%
Ownership percentage in Joint Venture 41.00%   41.00%
Shares received from Joint Venture 49,285,713    
Additional ownership percentage acquired 11.00%    
Write-off of basis differences within Loss from Equity Method Investment in the Joint Venture   $ 13,900 $ 13,900
Legacy CHC [Member]      
Schedule of Equity Method Investments [Line Items]      
Percentage investment exchanged for membership interest in Joint Venture     45.615%
Joint Venture [Member] | Legacy CHC [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage in Joint Venture     54.385%