CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 32	$ (127)	$ (2)	$ 33
Other comprehensive income, net of tax:
Adjustment to pension and other postretirement plans (net of tax)	0	0	0	0
Other comprehensive income	0	0	0	0
Comprehensive income (loss)	$ 32	$ (127)	$ (2)	$ 33