Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Consolidated Condensed Statements of Comprehensive Income
Net income / (loss)		$ (68)	$ 246	$ (168)	$ 469
Other comprehensive income / (loss) items:
Unrealized losses on derivatives	[1]				(2)
Pension and postretirement (losses) / gains	[2]	(3)		(3)	1
Reclassification to income of realized losses on derivatives	[3]				3
Reclassification to income of realized losses on pension and postretirement	[4]	5		5
Other comprehensive income / (loss), net of tax		2		2	2
Comprehensive income/(loss)		$ (66)	$ 246	$ (166)	$ 471

[1] No tax for the three months ended June 30, 2015 and 2014. Net of tax of zero and $1 million for the six months ended June 30, 2015 and 2014, respectively.

[2] Net of tax of $2 million and zero for the three months ended June 30, 2015 and 2014, respectively. Net of tax of $2 million and zero for the six months ended June 30, 2015 and 2014, respectively. See Note 10, Retirement and Postretirement Benefit Plans, for additional information.

[3] No tax for the three months ended June 30, 2015 and 2014. Net of tax of Zero and ($2) million for the six months ended June 30, 2015 and 2014, respectively.

[4] Net of tax of ($3) million and zero for the three months ended June 30, 2015 and 2014, respectively. Net of tax of ($3) million and zero for the six months ended June 30, 2015 and 2014, respectively. See Note 10, Retirement and Postretirement Benefit Plans, for additional information.