Debt Notes and Debentures (Details) $ in Millions	Mar. 31, 2019 USD ($)
Junior Subordinated Debt
Debt Instrument [Line Items]
Subordinated notes related to financial covenants	$ 500

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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