Investments - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investment Holdings [Line Items]
Investment grade rating	89.00%
Limited partnership interests	$ 389,318	$ 383,717
Fixed maturity securities	5,843,183	5,791,676
FHLB funding agreements	620,000	545,000
FHLB of Chicago
Investment Holdings [Line Items]
Fixed maturity securities	679,700	594,200
Governmental Agencies as Required by Law in Various States
Investment Holdings [Line Items]
Fixed maturity securities	$ 27,000	$ 26,000

Represents the federal home loan bank funding agreements.

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- Definition

Percentage of fair value of fixed maturity and equity securities with a gross unrealized loss having an investment grade rating at period end.

+ References

No definition available.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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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.

+ References

No definition available.

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- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

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