XML 82 R50.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Fair Values of Financial Instruments (Assumptions Used in Estimating Fair Value) (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Expected cost of annual call options 2.90% 3.10%
Experience study on products with lifetime income benefit riders, period 10 years  
Mean reversion period 20 years  
Contract Duration, 1-5 Years | Fixed Index Annuities | Minimum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 1 year 1 year
Contract Duration, 1-5 Years | Fixed Index Annuities | Maximum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 5 years 5 years
Contract Duration, 1-5 Years | Fixed Index Annuities | Average    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Average lapse rates 0.90% 2.05%
Average partial withdrawal rates 3.33% 3.33%
Contract Duration, 6-10 Years | Fixed Index Annuities | Minimum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 6 years 6 years
Contract Duration, 6-10 Years | Fixed Index Annuities | Maximum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 10 years 10 years
Contract Duration, 6-10 Years | Fixed Index Annuities | Average    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Average lapse rates 1.29% 7.28%
Average partial withdrawal rates 3.84% 3.33%
Contract Duration, 11-15 Years | Fixed Index Annuities | Minimum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 11 years 11 years
Contract Duration, 11-15 Years | Fixed Index Annuities | Maximum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 15 years 15 years
Contract Duration, 11-15 Years | Fixed Index Annuities | Average    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Average lapse rates 3.31% 11.35%
Average partial withdrawal rates 4.12% 3.35%
Contract Duration, 16-20 Years | Fixed Index Annuities | Minimum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 16 years 16 years
Contract Duration, 16-20 Years | Fixed Index Annuities | Maximum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 20 years 20 years
Contract Duration, 16-20 Years | Fixed Index Annuities | Average    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Average lapse rates 8.52% 11.90%
Average partial withdrawal rates 4.18% 3.22%
Contract Duration, 20 or More Years | Fixed Index Annuities | Minimum    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Contract duration (years) 20 years 20 years
Contract Duration, 20 or More Years | Fixed Index Annuities | Average    
Long-Duration Contracts, Assumptions by Product and Guarantee [Line Items]    
Average lapse rates 7.10% 11.57%
Average partial withdrawal rates 4.12% 3.22%