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INVESTMENTS (Details - Carrying values of other invested assets) - USD ($)
$ in Millions
108 Months Ended
Dec. 31, 2027
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
Investment [Line Items]          
Other invested assets       $ 21,183 $ 20,822
Hedge Funds          
Investment [Line Items]          
Hedge Fund Fair Value Redemption, Percentage   0.00% 69.00%    
Hedge Fund Fair Value Redemption, Additional Percentage 31.00%        
Alternative investments          
Investment [Line Items]          
Other invested assets       11,125 11,308
Alternative investments | Hedge Funds          
Investment [Line Items]          
Other invested assets       5,500 5,800
Alternative investments | Direct private equity          
Investment [Line Items]          
Other invested assets       5,200 5,000
Alternative investments | Affordable Housing Partnerships          
Investment [Line Items]          
Other invested assets       483 543
Investment real estate          
Investment [Line Items]          
Other invested assets       8,636 8,258
Net of accumulated depreciation on investment in real estate       556 515
Aircraft asset investments          
Investment [Line Items]          
Other invested assets       201 206
All other investments          
Investment [Line Items]          
Other invested assets       $ 1,221 $ 1,050