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CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Statement of Comprehensive Income [Abstract]        
Net income (loss) $ 103 $ (8,131) $ (43) $ (10,144)
Other comprehensive income (loss) items:        
Pension and postretirement gains (losses) [1] (3) 20 49 (91)
Losses on derivatives 0 1 1 1
Other 0 1 0 (1)
Other comprehensive income (loss), net of tax (3) 22 50 (91)
Comprehensive income (loss) attributable to preferred and common stockholders $ 100 $ (8,109) $ 7 $ (10,235)
[1] Net of tax (expense) benefit of $1 million and $(5) million for the three months ended June 30, 2021 and 2020, respectively, and $(14) million and $26 million for the six months ended June 30, 2021 and 2020, respectively.