Related Party Debt (Details) - Subordinated Debt - Subordinated Demand Promissory Notes - Affiliated Entity - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Apr. 01, 2015 |
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| Related Party Transaction [Line Items] | |||||
| Debt instrument, face amount | $ 1,800,000,000 | ||||
| Interest expense | $ 0 | $ 1,000,000.0 | $ 0 | $ 4,100,000 | |
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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