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INVESTMENTS (DERIVATIVES 1) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 03, 2017
Dec. 31, 2017
Dec. 31, 2016
Exchange Traded Future Contract [Line Items]      
Reduction in Derivative Assets $ 18    
Cash and securities collateral for derivative contract   $ 1,855 $ 755
Collateralized derivative transactions   2 700
Cash and securities collateral   3 $ 820
S&P 500, Russell 1000, NASDAQ 100 and Emerging Market Indices      
Exchange Traded Future Contract [Line Items]      
Initial margin requirement   97  
Us Treasury Notes Ultra Long Bonds And Euro Dollar      
Exchange Traded Future Contract [Line Items]      
Initial margin requirement   10  
Euro Stoxx, FTSE100, EAFE And Topix Indices      
Exchange Traded Future Contract [Line Items]      
Initial margin requirement   $ 13  
Swaps      
Exchange Traded Future Contract [Line Items]      
Credit derivative term   5 years