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EMPLOYEE BENEFIT PLANS - EXPECTED AMORTIZATION FROM AOCI (DETAILS) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Qualified Defined Benefit [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
Prior service credit $ (1)
Net loss 43
Nonqualified Defined Benefit [Member]
 
Defined Benefit Plan Disclosure [Line Items]  
Expected amortization from AOCL (pretax) $ (1)