Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income (loss)	$ 4	$ 130	$ 137	$ (224)
Foreign currency translation adjustment	(2)	(6)	(8)	(3)
Net change in unrealized gains and losses on derivative financial instruments, net of tax	(28)	43	(55)	118
Net change in certain retirement plans	0	0	(1)	0
Total other comprehensive income (loss)	(30)	37	(64)	115
Total comprehensive income (loss)	$ (26)	$ 167	$ 73	$ (109)