Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Consolidated Condensed Statements of Comprehensive Income
Net income / (loss)		$ (104)	$ 188	$ (272)	$ 657
Other comprehensive income / (loss) items:
Unrealized losses on derivatives	[1]				(2)
Pension and postretirement (losses) / gains	[2]	(4)		(7)	1
Reclassification to income of realized losses on derivatives	[3]				3
Reclassification to income of realized losses on pension and postretirement	[4]	6		11
Other comprehensive income / (loss), net of tax		2		4	2
Comprehensive income/(loss)		$ (102)	$ 188	$ (268)	$ 659

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

[2] Net of tax of $3 million and zero for the three months ended September 30, 2015 and 2014, respectively. Net of tax of $5 million and zero for the nine months ended September 30, 2015 and 2014, respectively. See Note 10, Retirement and Postretirement Benefit Plans, for additional information.

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

[4] Net of tax of ($4) million and zero for the three months ended September 30, 2015 and 2014, respectively. Net of tax of ($7) million and zero for the nine months ended September 30, 2015 and 2014, respectively. See Note 10, Retirement and Postretirement Benefit Plans, for additional information.