Annual report pursuant to Section 13 and 15(d)

INVESTMENTS (Details 3)

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INVESTMENTS (Details 3) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]      
Proceeds from Sale of Available-for-sale Securities $ 14,205 $ 11,540 $ 4,043
Gross realized gains 68 152 103
Gross realized losses (32) (51) $ (42)
Available-for-Sale Securities      
Schedule of Available-for-sale Securities [Line Items]      
Solvency Funds of Insurance Captive $ 1,159 $ 985