Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (USD $) In Millions, unless otherwise specified	Total	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive loss	Preferred Stock
Balance at beginning and end of period at Dec. 31, 2010					$ 1,575
Balance at beginning of period at Dec. 31, 2010		23,321	(16,685)	(491)
Net loss	(69)		(69)
Dividends:
Preferred stock			(65)
Other comprehensive income	63			63
Total shareholders' equity at end of period at Jun. 30, 2011	7,649				1,575
Balance at end of period at Jun. 30, 2011	6,074	23,321	(16,819)	(428)
Balance at beginning and end of period at Dec. 31, 2011	6,926				1,575
Balance at beginning of period at Dec. 31, 2011	5,351	23,966	(18,219)	(396)
Employee benefit plans, including transfers and other		1
Net loss	(413)		(413)
Dividends:
Preferred stock			(61)
Other comprehensive income	58			58
Total shareholders' equity at end of period at Jun. 30, 2012	6,511				1,575
Balance at end of period at Jun. 30, 2012	$ 4,936	$ 23,967	$ (18,693)	$ (338)