CONSOLIDATED 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
Statement of Income and Comprehensive Income
Net income (loss)	$ (6)	$ 16	$ 25	$ (19)
Other comprehensive income (loss), net of tax:
Actuarial gain (loss) relating to postretirement benefits	0	0	1	(1)
Total other comprehensive income, net of tax	0	0	1	(1)
Comprehensive income (loss)	$ (6)	$ 16	$ 26	$ (20)