Annual report pursuant to Section 13 and 15(d)

OTHER COMPREHENSIVE (LOSS) INCOME (Details 2)

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OTHER COMPREHENSIVE (LOSS) INCOME (Details 2) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Pension and other postretirement benefits adjustments      
Reclassification from accumulated other comprehensive loss      
Income tax expense $ (14) $ 11  
Pension and other postretirement benefits adjustments | Amount reclassified      
Reclassification from accumulated other comprehensive loss      
Total before tax (69) (59) $ (84)
Income tax expense 14 11 23
Net of tax (55) (48) (61)
Prior Service Credit | Amount reclassified      
Reclassification from accumulated other comprehensive loss      
Total before tax 10 9 8
Actuarial loss | Amount reclassified      
Reclassification from accumulated other comprehensive loss      
Total before tax (79) (55) (80)
Actuarial loss | Amount reclassified | Discontinued Operations      
Reclassification from accumulated other comprehensive loss      
Total before tax $ 6 4 6
Settlement loss | Amount reclassified      
Reclassification from accumulated other comprehensive loss      
Total before tax   $ (13) $ (12)