Quarterly report pursuant to Section 13 or 15(d)

Related Party Debt (Details)

v3.20.4
Related Party Debt (Details) - Subordinated Debt - Subordinated Demand Promissory Notes - Affiliated Entity - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Apr. 01, 2015
Related Party Transaction [Line Items]          
Debt instrument, face amount         $ 1,800,000,000
Interest expense $ 0 $ 0 $ 0 $ 4,100,000