Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income (loss)	$ 616	$ (16)
Other comprehensive income (loss), net of income taxes:
Defined benefit and other postretirement plans adjustments	3	4
Other	1	2
Other comprehensive income (loss), net of income taxes	4	6
Comprehensive income (loss)	620	(10)
Comprehensive (income) loss attributable to noncontrolling interest	6	(3)
Comprehensive income (loss) attributable to company shareholders	$ 626	$ (13)