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FAIR VALUE OF FINANCIAL INSTRUMENTS - Determination of Fair Values Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
item
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Determination of fair values      
Number of primary sources of information used for determining fair value | item 1    
Total number of primary sources of information available for determining fair value | item 3    
Minimum percentage of the Company's fixed maturity securities priced by third party pricing services 91.87%    
Number of independent non-binding broker quotes obtained per security | item 2    
Minimum percentage of underlying collateral guaranteed by third party 97.00%    
Percentage of derivatives excluding embedded derivatives that were priced using exchange prices or independent broker quotations 83.90%    
Other long-term investments $ 1,447 $ 1,636  
Minimum      
Determination of fair values      
Number of primary sources of information used for determining fair value | item 1    
Maximum      
Determination of fair values      
Number of primary sources of information used for determining fair value | item 3    
Level 3      
Determination of fair values      
Annuity account balances $ 2,002 2,306 $ 1,402
Asset-Backed Securities | Level 2      
Determination of fair values      
Fair value, assets 10,200    
Asset-Backed Securities | Level 3      
Determination of fair values      
Fair value, assets 828    
Other asset-backed securities | Level 3      
Determination of fair values      
Fair value, assets 436 435  
Other asset-backed securities | Level 3 | Available-for-sale securities      
Determination of fair values      
Fair value, assets 735    
Other asset-backed securities | Level 3 | Trading securities      
Determination of fair values      
Fair value, assets 93    
Equity securities | Level 2      
Determination of fair values      
Fair value, assets 155    
Federal home loan bank stock $ 148    
Embedded derivative - GLWB | Minimum      
Determination of fair values      
Mortality rate 88.00%    
Embedded derivative - GLWB | Maximum      
Determination of fair values      
Mortality rate 100.00%    
Funds withheld derivative | Level 2      
Determination of fair values      
Fair value, derivative liability $ 10    
Corporate securities | Level 3      
Determination of fair values      
Fair value, assets 1,588 1,432  
Corporate Bonds And Securities | Level 2      
Determination of fair values      
Fair value, assets 59,600    
Corporate Bonds And Securities | Level 3      
Determination of fair values      
Fair value, assets $ 1,600    
Actuarial cash flow model | Embedded derivative-FIA | Level 3 | Minimum      
Determination of fair values      
Mortality rate 88.00%    
Actuarial cash flow model | Embedded derivative-FIA | Level 3 | Maximum      
Determination of fair values      
Mortality rate 100.00%    
Actuarial cash flow model | Embedded derivative - IUL | Level 3 | Minimum      
Determination of fair values      
Mortality rate 43.00%    
Actuarial cash flow model | Embedded derivative - IUL | Level 3 | Maximum      
Determination of fair values      
Mortality rate 110.00%    
Variable annuity | Level 3      
Determination of fair values      
Annuity account balances $ 63 $ 67 $ 70