Investments (Other Invested Assets - Narrative) (Details)	Mar. 31, 2019
Other invested assets [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Percentage Estimated Fair Value	80.00%

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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