Investments - Impaired Loans 2 (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014 loan	Dec. 31, 2013 loan
Investments, Debt and Equity Securities [Abstract]
Troubled debt restructured loans	$ 86.6	$ 86.6
Financing Receivable, Recorded Investment, Equal to Greater than 90 Days Past Due	0	5.1
Loans in foreclosure, at amortized cost	0	0
Number of loans in arrears	0	1
Impaired Financing Receivable, Unpaid Principal Balance, Equal to or Greater than 90 Days Past Due	$ 0	$ 5.1

Financing Receivable, Loans in Foreclosure, Amortized Cost

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- Definition

Impaired Financing Receivable, Unpaid Principal Balance, Equal to or Greater than 90 Days Past Due

+ References

No definition available.

+ Details

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- Definition

Impaired Financing Receivable, Unpaid Principal Balance, Number of Loans in Arrears

+ References

No definition available.

+ Details

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

+ Details

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- Definition

Financing receivables that are equal to or greater than 90 days past due.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524

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