Consolidated Statement of Stockholders' Equity (Unaudited) (USD $) In Millions	Total	Total Stockholders' Equity	Common Stock	Treasury Stock	Additional Paid In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Noncontrolling Interest	Comprehensive Income
Ending balance at Dec. 31, 2010	$ 11,596	$ 11,535	$ 30	$ 0	$ 9,837	$ 1,587	$ 81	$ 61
Warrants exercised		403	1	0	402	0	0	0
Shares purchased		(133)	0	(133)	0	0	0	0
Share-based compensation		31	0	5	26	0	0	0
Net income (loss)		2,362	0	0	0	2,362	0	(4)	2,358
Cash dividends ($0.30 per share)		(171)	0	0	0	(171)	0	0	0
Changes in unrecognized employee benefits gains and losses, net of tax of less than $1		2	0	0	0	0	2	0	2
Foreign currency translations, net of tax of less than $1		(4)	0	0	0	0	(4)	0	(4)
Comprehensive income									2,356
Ending balance at Sep. 30, 2011	$ 14,082	$ 14,025	$ 31	$ (128)	$ 10,265	$ 3,778	$ 79	$ 57