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CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME        
Unrealized losses on derivatives, tax $ 1   $ 7  
Pension and postretirement gains, tax (4) $ (1) (7) $ (2)
Reclassification to income of realized losses on derivatives, tax 0   (4)  
Other comprehensive income (loss) related to noncontrolling interests $ 0 $ 0 $ 0 $ 0