Consolidated Statements Of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements Of Comprehensive Loss [Abstract]
Net loss	$ (186)	$ (51)
Other comprehensive income, net of tax (see Note 12)	6	3
Comprehensive loss	$ (180)	$ (48)