XML 22 R25.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Values of Financial Instruments (Narrative) (Details) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets, Level 1 to Level 2 transfers, amount $ 0   $ 0
Liabilities, Level 1 to Level 2 transfers, amount 0   0
Assets, Level 2 to Level 1 transfers, amount 0   0
Liabilities, Level 2 to Level 1 transfers, amount 0   0
Assets, transfers into Level 3, amount 0 0  
Liabilities, transfers into Level 3, amount 0 0  
Assets, transfers out of Level 3, amount 0 0  
Liabilities, transfers out of Level 3, amount 0 0  
Other investments 213,706,000   215,042,000
Fair Value, Sensitivity, Increase in Discount Rate by 10 Percent [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value, sensitivity, discount rate adjustment (basis points) 100    
Fixed index annuities embedded derivative, adjustment due to change in discount rate (316,100,000)    
Deferred policy scquisition costs and deferred sales inducements, combined balance, adjustment due to change in discount rate (192,000,000)    
Fair Value, Sensitivity, Decrease in Discount Rate by 10 Percent [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value, sensitivity, discount rate adjustment (basis points) 100    
Fixed index annuities embedded derivative, adjustment due to change in discount rate 351,600,000    
Deferred policy scquisition costs and deferred sales inducements, combined balance, adjustment due to change in discount rate 208,700,000    
Fair Value, Measurements, Recurring [Member]
      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Other investments $ 0