Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 79	$ 118	$ 207	$ (270)
Other Comprehensive Income from Continuing Operations
Losses on treasury rate locks reclassified into income				1
Pension and other postretirement benefit plans	2	1		2
Other comprehensive income, before income taxes	2	1		3
Income tax (benefit) expense related to other comprehensive income			(1)	1
Other comprehensive income from continuing operations, net of income taxes	2	1	1	2
Other Comprehensive Income from Discontinued Operations, Net of Income Taxes				6
Comprehensive Income (Loss)	$ 81	$ 119	$ 208	$ (262)