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Commitments and Contingencies (Narrative) (Details) $ in Millions	Dec. 31, 2019 USD ($)
Total contractually obligated investments
Contractual Obligation Additional Investment in Alternative or Other Investments	$ 283.5
Alternative and Other Investments
Contractual Obligation Additional Investment in Alternative or Other Investments	219.2
Non-publicly traded collateralized loan obligations in our fixed income securities portfolio
Contractual Obligation	35.4
Non-publicly traded common stock within our equity portfolio
Contractual Obligation	3.9
Commercial Mortgage Loans [Member]
Contractual Obligation	10.0
Privately placed corporate securities
Contractual Obligation	$ 15.0

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- Definition

Contractual obligation to invest additional amounts in alternative and other investments.

+ References

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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

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- Details

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- Details

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