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FAIR VALUE MEASUREMENTS (Details - Investments in certain other invested assets, including private equity funds, hedge funds and other alternative investments) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent $ 8,418 $ 6,493
Unfunded Commitments 3,330 3,152
Direct private equity    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 6,588 4,613
Unfunded Commitments $ 3,330 3,151
Average original expected lives 10 years  
Direct private equity | Maximum [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Average original expected lives, Increments 2 years  
Direct private equity | Minimum [Member]    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Average original expected lives, Increments 1 year  
Leveraged buyout    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent $ 2,768 1,752
Unfunded Commitments 1,798 1,960
Real assets    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 904 908
Unfunded Commitments 487 445
Venture capital    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 252 167
Unfunded Commitments 201 171
Growth equity    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 914 703
Unfunded Commitments 82 55
Mezzanine    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 534 400
Unfunded Commitments 354 155
Other    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 1,216 683
Unfunded Commitments 408 365
Hedge funds    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 1,830 1,880
Unfunded Commitments 0 1
Event-driven    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 466 411
Unfunded Commitments 0 0
Long-short    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 432 361
Unfunded Commitments 0 0
Macro    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 516 807
Unfunded Commitments 0 0
Other    
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]    
Fair Value Using Net Asset Value Per Share or its equivalent 416 301
Unfunded Commitments $ 0 $ 1