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	(863)			(863)
Other Comprehensive Income, Net of Tax	17				17
Stock Issued During Period, Shares, New Issues		1
Stock Issued During Period, Value, New Issues	3	3
Share-based compensation expense	7		7
Balance at Mar. 31, 2012	$ 10,591	$ 5,995	$ 46,723	$ (41,352)	$ (775)
Balance (in shares) at Mar. 31, 2012		2,997