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Significant Accounting Policies (Narrative) (Details) - Accounting Standards Update 2016-13 $ in Millions | Jan. 01, 2020 USD ($)
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Mortgage Loans, Allowance for Credit Loss |
New accounting pronouncement, effect of adoption, quantification | $ 8.6
Reinsurance Recoverable, Allowance for Credit Loss |
New accounting pronouncement, effect of adoption, quantification | 3.2
Retained Earnings |
New accounting pronouncement, effect of adoption, quantification | $ (9.3)

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