CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE 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 loss	$ (53)	$ (70)	$ (135)	$ (208)
Net impact of interest rate derivative instruments, net of tax	5	8	16	27
Comprehensive loss	$ (48)	$ (62)	$ (119)	$ (181)