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Investments (Investments Pledged as Collateral) (Details) $ in Millions	Dec. 31, 2015 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 63.7
Securities Pledged As Collateral For Reinsurance Obligations	11.5
Assets Held by Insurance Regulators	24.0
Securities pledged as collateral for reinsurance obligations	99.2
Outstanding borrowing with the Federal Home Loan Bank of Indianapolis	60.0
U.S. Government and Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	7.5
Securities Pledged As Collateral For Reinsurance Obligations	0.0
Assets Held by Insurance Regulators	24.0
Securities pledged as collateral for reinsurance obligations	31.5
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	0.0
Securities Pledged As Collateral For Reinsurance Obligations	5.0
Assets Held by Insurance Regulators	0.0
Securities pledged as collateral for reinsurance obligations	5.0
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	0.0
Securities Pledged As Collateral For Reinsurance Obligations	4.7
Assets Held by Insurance Regulators	0.0
Securities pledged as collateral for reinsurance obligations	4.7
Commercial Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	1.2
Securities Pledged As Collateral For Reinsurance Obligations	0.0
Assets Held by Insurance Regulators	0.0
Securities pledged as collateral for reinsurance obligations	1.2
Residential Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	55.0
Securities Pledged As Collateral For Reinsurance Obligations	1.8
Assets Held by Insurance Regulators	0.0
Securities pledged as collateral for reinsurance obligations	$ 56.8

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- Definition

The carrying value of investments pledged as collateral for reinsurance obligations

+ References

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Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 320
-Section 50
-Paragraph 1
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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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