CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
Net income (loss)		$ 190	$ (241)	$ 814	$ (302)
Other comprehensive income (loss) items:
Foreign currency translation gains		2		3	1
Unrealized gains (losses) on derivatives	[1]	8	1	14	(12)
Pension and postretirement gains	[2]	4	4	12	16
Reclassification to income of realized (gains) losses on derivatives	[3]			(1)	8
Other comprehensive income, net of tax		14	5	28	13
Comprehensive income (loss)		$ 204	$ (236)	$ 842	$ (289)

[1] Net of tax of $(5) and $(1) for the three months ended September 30, 2017, and 2016, respectively, and $(8) and $6 for the nine months ended September 30, 2017, and 2016, respectively.

[2] Net of tax of $(3) and $(2) for the three months ended September 30, 2017, and 2016, respectively, and $(7) and $(9) for the nine months ended September 30, 2017, and 2016, respectively.

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