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INCOME TAXES (Details 3) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Deferred tax asset valuation allowances      
Balance at beginning of year $ 649    
Balance at end of year 477 $ 649  
Net increase or (decrease) in valuation allowances (172) 63 $ 99
Valuation Allowance of Deferred Tax Assets [Member]      
Deferred tax asset valuation allowances      
Balance at beginning of year 649 586 487
Additions 42 104 169
(Decrease) due to transfer to assets held for sale (163) 0 0
Deductions (51) (41) (70)
Balance at end of year $ 477 $ 649 $ 586