Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Consolidated Condensed Statements of Comprehensive Income
Net income (loss)		$ 52	$ (50)
Net (income) loss attributable to noncontrolling interest		1
Other comprehensive income items:
Reclassification to income of realized losses on pension and postretirement	[1]	3	3
Total other comprehensive income, net of tax		3	3
Comprehensive income (loss) attributable to common stock		56	(47)
Pension and postretirement income, associated tax		$ 0	$ 0

[1] No associated tax for the three months ended March 31, 2017 and 2016. See Note 10, Retirement and Postretirement Benefit Plans, for additional information.