CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
Net income (loss)		$ 507	$ (139)	$ 624	$ (61)
Other comprehensive income (loss) items:
Foreign currency translation gains				1	1
Unrealized gains (losses) on derivatives	[1]	1	(3)	6	(13)
Pension and postretirement gains (losses)	[2]	(1)	7	8	12
Reclassification to income of realized (gains) losses on derivatives	[3]	1	1	(1)	8
Other comprehensive income, net of tax		1	5	14	8
Comprehensive income (loss)		$ 508	$ (134)	$ 638	$ (53)

[1] Net of tax of zero and $1 for the three months ended June 30, 2017 and 2016, respectively, and $(3) and $7 for the six months ended June 30, 2017, and 2016, respectively.

[2] Net of tax of $1 and $(4) for the three months ended June 30, 2017 and 2016, respectively, and $(4) and $(7) for the six months ended June 30, 2017, and 2016, respectively.

[3] Net of tax of zero for the three months ended June 30, 2017 and 2016, respectively, and $1 and $(4) for the six months ended June 30, 2017, and 2016, respectively.