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Fair Value Measurements (Details - GMIB Contracts) (Variable Annuity [Member], Guaranteed Minimum Income Benefit [Member])
12 Months Ended
Dec. 31, 2012
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
7-year Treasury Rate used to calculate the reinsured income benefits 1.18%
Contractually guaranteed floor for the claim interest rate 3.00%
Percentage of mutual fund investments modeled based on other indices with insufficient market-observable data 50.00%
Volatility Assumption Based On Other Indices Historical Average Term 10 years
Mortality Assumption as a Percentage of 1994 Group Annuity Mortality table 70.00%
Annual percentage improvement in the mortality assumption percent 1.00%
Assumed probability percentage that an individual will annuitize a variable annuity contract immediately after waiting period expiration 80.00%
Assumed probability percentage that an individual will annuitize a variable annuity contract in the second or subsequent annual benefit opportunities 20.00%
Assumed return on capital for risk and profit charge assumption 10.00%
Maximum [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Lapse Rate Assumption, High 12.00%
Maximum [Member] | Guaranteed Minimum Income Benefits Assets [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Nonperformance risk adjustment 100
Maximum [Member] | GMIB Liabilities [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Nonperformance risk adjustment 140
Maximum [Member] | Equity Funds [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Volatility Assumption High 28.00%
Maximum [Member] | Bond Funds [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Volatility Assumption High 8.00%
Maximum [Member] | Money Market Funds [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Volatility Assumption High 1.00%
Minimum [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Lapse Rate Assumption, Low 0.00%
Minimum [Member] | Guaranteed Minimum Income Benefits Assets [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Nonperformance risk adjustment 15
Minimum [Member] | GMIB Liabilities [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Nonperformance risk adjustment 5
Minimum [Member] | Equity Funds [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Volatility Assumption Low 18.00%
Minimum [Member] | Bond Funds [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Volatility Assumption Low 6.00%
Minimum [Member] | Money Market Funds [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Volatility Assumption Low 0.00%
Weighted Average [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Lapse Rate Assumption, Weighted Average 1.80%
Weighted average annual annuity election rate 9.00%
Weighted Average [Member] | Guaranteed Minimum Income Benefits Assets [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Nonperformance risk adjustment 65
Weighted Average [Member] | GMIB Liabilities [Member]
 
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]  
Nonperformance risk adjustment 55