Investments Investments (Investments Pledged as Collateral) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012 Securities
Schedule of Available-for-sale Securities [Line Items]
Number Of Fixed Maturity Securities Pledged As Collateral For Borrowings With Federal Home Loan Bank Of Indianapolis	30
Fixed maturity security pledged at carrying value	$ (61.7)
Outstanding borrowing with the Federal Home Loan Bank of Indianapolis	$ 58.0

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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+ Details

- Definition

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

+ References

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

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+ Details