INVESTMENTS (DERIVATIVES 1) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Cash and securities collateral for derivative contract	$ 655	$ 1,225
Collateralized derivative transactions	5	28
Cash and securities collateral	5	$ 36
S&P 500, Russell 1000, NASDAQ 100 and Emerging Market Indices [Member]
Exchange Traded Future Contract [Line Items]
Initial margin requirement	276
Us Treasury Notes Ultra Long Bonds And Euro Dollar [Member]
Exchange Traded Future Contract [Line Items]
Initial margin requirement	33
Euro Stoxx, FTSE100, EAFE And Topix Indices [Member]
Exchange Traded Future Contract [Line Items]
Initial margin requirement	$ 49