Fair Value Measurements Level 4 Best Estimate Claim Costs (Details)	12 Months Ended
Dec. 31, 2014
Fair Value Disclosures [Abstract]
Expected Return Assumption Valuation, Period on Actual Observed Returns	10 years
Expected Return Assumption Valuation, Period for Fund Regression	3 years

Expected Return Assumption Valuation, Period on Actual Observed Returns

No definition available.

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