CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Millions, except Share data, unless otherwise specified	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period at Dec. 31, 2009		$ 575	$ 0	$ 23,119	$ (14,732)	$ (583)
Number of shares at beginning of period at Dec. 31, 2009		575,000	65
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series C preferred stock		1,000
Capital contribution from parent				200
Employee benefit plans, including transfers and other				2
Net loss	(1,916)				(1,916)
Dividends on preferred stock					(37)
Other comprehensive income	92					92
Number of shares of stock issed to parent		1,000	1
Balance at end of period at Dec. 31, 2010	7,720	1,575	0	23,321	(16,685)	(491)
Number of shares at end of period at Dec. 31, 2010		576,000	66
Total common shareholder's equity at end of period at Dec. 31, 2010	6,145
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series C preferred stock		0
Capital contribution from parent				690
Employee benefit plans, including transfers and other				(45)
Net loss	(1,408)				(1,408)
Dividends on preferred stock					(126)
Other comprehensive income	95					95
Number of shares of stock issed to parent		0	2
Balance at end of period at Dec. 31, 2011	6,926	1,575	0	23,966	(18,219)	(396)
Number of shares at end of period at Dec. 31, 2011		576,000	68
Total common shareholder's equity at end of period at Dec. 31, 2011	5,351
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series C preferred stock		0
Capital contribution from parent				0
Employee benefit plans, including transfers and other				8
Net loss	(845)
Dividends on preferred stock					(123)
Other comprehensive income	139					139
Number of shares of stock issed to parent		0	0
Balance at end of period at Dec. 31, 2012	6,105	1,575	0	23,974	(19,187)	(257)
Number of shares at end of period at Dec. 31, 2012		576,000	68
Total common shareholder's equity at end of period at Dec. 31, 2012	$ 4,530