CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
Balance at Dec. 31, 2011	$ 11,427	$ 5,992	$ 46,716	$ (40,489)	$ (792)
Balance (in shares) at Dec. 31, 2011		2,996
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,004)			(3,004)
Other Comprehensive Income, Net of Tax	26				26
Stock Issued During Period, Shares, New Issues		7
Stock Issued During Period, Value, New Issues	21	15	6
Share-based compensation expense	30		30
Stockholders' Equity, Other	(1)			(1)
Balance at Sep. 30, 2012	$ 8,499	$ 6,007	$ 46,752	$ (43,494)	$ (766)
Balance (in shares) at Sep. 30, 2012		3,003