Equity (Deficit) (Details) (USD $) In Millions, except Share data, unless otherwise specified			0 Months Ended	12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended				12 Months Ended			12 Months Ended		12 Months Ended						12 Months Ended			0 Months Ended	12 Months Ended								12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 08, 2008 Series 2008-2 Senior Preferred Stock [Member]	Dec. 31, 2012 Series 2008-2 Senior Preferred Stock [Member]		Dec. 31, 2011 Series 2008-2 Senior Preferred Stock [Member]	Dec. 31, 2012 Series D Preferred Stock [Member]	Dec. 31, 2011 Series D Preferred Stock [Member]	Dec. 31, 2012 Series E Preferred Stock [Member]	Dec. 31, 2011 Series E Preferred Stock [Member]	Dec. 31, 2012 Series F Preferred Stock [Member]		Dec. 31, 2011 Series F Preferred Stock [Member]	Dec. 31, 2012 Series G Preferred Stock [Member]		Dec. 31, 2011 Series G Preferred Stock [Member]	Dec. 31, 2012 Series H Preferred Stock [Member]	Dec. 31, 2011 Series H Preferred Stock [Member]	Dec. 31, 2012 Series I Preferred Stock [Member]	Dec. 31, 2011 Series I Preferred Stock [Member]	Dec. 31, 2012 Series L Preferred Stock [Member]	Dec. 31, 2011 Series L Preferred Stock [Member]	Dec. 31, 2012 Series M Preferred Stock [Member]	Dec. 31, 2011 Series M Preferred Stock [Member]	Dec. 31, 2012 Series N Preferred Stock [Member]	Dec. 31, 2011 Series N Preferred Stock [Member]	Dec. 31, 2012 Series O Preferred Stock [Member]		Dec. 31, 2011 Series O Preferred Stock [Member]	Dec. 31, 2012 Convertible Series 2004-1 Preferred Stock [Member]		Dec. 31, 2011 Convertible Series 2004-1 Preferred Stock [Member]		Dec. 31, 2012 Series P Preferred Stock [Member]		Dec. 31, 2011 Series P Preferred Stock [Member]	Dec. 31, 2012 Series Q Preferred Stock [Member]	Dec. 31, 2011 Series Q Preferred Stock [Member]	Dec. 31, 2012 Series R Preferred Stock [Member]		Dec. 31, 2011 Series R Preferred Stock [Member]		Dec. 14, 2007 Series R Preferred Stock [Member]	Nov. 21, 2007 Series R Preferred Stock [Member]	Dec. 31, 2012 Series S Preferred Stock [Member]		Dec. 31, 2011 Series S Preferred Stock [Member]	May 13, 2011 Mandatory Convertible Series 2008-I [Member]	Dec. 31, 2011 Mandatory Convertible Series 2008-I [Member]	Dec. 31, 2012 Series T Preferred Stock [Member]		Dec. 31, 2011 Series T Preferred Stock [Member]		Jun. 04, 2008 Series T Preferred Stock [Member]	May 22, 2008 Series T Preferred Stock [Member]	May 19, 2008 Series T Preferred Stock [Member]	Dec. 31, 2012 Maximum [Member] Series F Preferred Stock [Member]	Dec. 31, 2012 Maximum [Member] Series G Preferred Stock [Member]	Dec. 31, 2012 Minimum [Member] Series O Preferred Stock [Member]	Dec. 31, 2012 Minimum [Member] Series P Preferred Stock [Member]	Dec. 31, 2012 Minimum [Member] Series S Preferred Stock [Member]	Dec. 31, 2012 Two-year Maturity U.S. Treasury Rate [Member] Series F Preferred Stock [Member]	Dec. 31, 2012 Two-year Maturity U.S. Treasury Rate [Member] Series G Preferred Stock [Member]	Dec. 31, 2012 Ten-year Maturity U.S. Treasury Rate [Member] Series O Preferred Stock [Member]	Dec. 31, 2012 Three-Month LIBOR [Member] Series P Preferred Stock [Member]	Dec. 31, 2012 Three-Month LIBOR [Member] Series S Preferred Stock [Member]
Class of Stock [Line Items]
Stock issued during period, shares, new issues			1,000,000
Senior preferred stock issued, shares	1,000,000	1,000,000				1,000,000
Senior preferred stock outstanding, shares	1,000,000	1,000,000		1,000,000		1,000,000
Senior preferred stock, Amount	$ 117,149	$ 112,578	$ 1,000	$ 117,149		$ 112,578
Senior Preferred Stock, Stated Value per Share			$ 1,000	$ 117,149	[1]
Senior Preferred Stock, Annual Dividend Rate				10.00%	[2]
Preferred Stock, Shares Issued	555,374,922	555,374,922					3,000,000	3,000,000	3,000,000	3,000,000	13,800,000		13,800,000	5,750,000		5,750,000	8,000,000	8,000,000	6,000,000	6,000,000	6,900,000	6,900,000	9,200,000	9,200,000	4,500,000	4,500,000	50,000,000		50,000,000	24,922	[3]	24,922	[3]	40,000,000		40,000,000	15,000,000	15,000,000	21,200,000	[4]	21,200,000	[4]	1,200,000	20,000,000	280,000,000		280,000,000			89,000,000	[5]	89,000,000	[5]	1,000,000	8,000,000	80,000,000
Preferred Stock Issued, Amount	19,130	19,130					150	150	150	150	690		690	288		288	400	400	300	300	345	345	460	460	225	225	2,500		2,500	2,492	[3]	2,492	[3]	1,000		1,000	375	375	530	[4]	530	[4]	30	500	7,000		7,000			2,225	[5]	2,225	[5]	25	200	2,000
Preferred Stock, Shares Outstanding	555,374,922	555,374,922					3,000,000	3,000,000	3,000,000	3,000,000	13,800,000		13,800,000	5,750,000		5,750,000	8,000,000	8,000,000	6,000,000	6,000,000	6,900,000	6,900,000	9,200,000	9,200,000	4,500,000	4,500,000	50,000,000		50,000,000	24,922	[3]	24,922	[3]	40,000,000		40,000,000	15,000,000	15,000,000	21,200,000	[4]	21,200,000	[4]			280,000,000		280,000,000			89,000,000	[5]	89,000,000	[5]
Preferred Stock Outstanding, Amount	$ 19,130	$ 19,130					$ 150	$ 150	$ 150	$ 150	$ 690		$ 690	$ 288		$ 288	$ 400	$ 400	$ 300	$ 300	$ 345	$ 345	$ 460	$ 460	$ 225	$ 225	$ 2,500		$ 2,500	$ 2,492	[3]	$ 2,492	[3]	$ 1,000		$ 1,000	$ 375	$ 375	$ 530	[4]	$ 530	[4]			$ 7,000		$ 7,000			$ 2,225	[5]	$ 2,225	[5]
Preferred Stock, Stated Value per Share							$ 50		$ 50		$ 50			$ 50			$ 50		$ 50		$ 50		$ 50		$ 50		$ 50			$ 100,000	[3]			$ 25			$ 25		$ 25	[4]					$ 25					$ 25	[5]
Preferred Stock, Annual Dividend Rate							5.25%		5.10%		0.23%	[6]		0.08%	[7]		5.81%		5.375%		5.125%		4.75%		5.50%		7.00%	[8]		5.375%	[3]			4.50%	[9]		6.75%		7.625%	[4]					7.75%	[10]		8.75%	8.75%	8.25%	[5]						11.00%	11.00%	7.00%	4.50%	7.75%
Preferred stock dividend rate, basis spread on variable rate																																																														(0.16%)	(0.18%)	2.375%	0.75%	4.23%

[1] Initial Stated Value per share was $1,000. Based on our draws of funds under the Senior Preferred Stock Variable Liquidation Preference agreement with Treasury, the Stated Value per share on December 31, 2012 was $117,149.

[2] Rate effective September 9, 2008 through December 31, 2012.

[3] Issued and outstanding shares were 24,922 as of December 31, 2012 and 2011, respectively.

[4] On November 21, 2007, we issued 20 million shares of preferred stock in the amount of $500 million. Subsequent to the initial issuance, we issued an additional 1.2 million shares in the amount of $30 million on December 14, 2007 under the same terms as the initial issuance.

[5] On May 19, 2008, we issued 80 million shares of preferred stock in the amount of $2.0 billion. Subsequent to the initial issuance, we issued an additional 8 million shares in the amount of $200 million on May 22, 2008 and one million shares in the amount of $25 million on June 4, 2008 under the same terms as the initial issuance.

[6] Rate effective March 31, 2012. Variable dividend rate resets every two years at a per annum rate equal to the two-year Maturity U.S. Treasury Rate (“CMT”) minus 0.16% with a cap of 11% per year. As of December 31, 2012, the annual dividend rate was 0.23%.

[7] Rate effective September 30, 2012. Variable dividend rate resets every two years at a per annum rate equal to the two-year CMT rate minus 0.18% with a cap of 11% per year. As of December 31, 2012, the annual dividend rate was 0.08%.

[8] Rate effective December 31, 2012. Variable dividend rate resets quarterly thereafter at a per annum rate equal to the greater of 7.00% or 10-year CMT rate plus 2.375%. As of December 31, 2012, the annual dividend rate was 7.00%.

[9] Rate effective December 31, 2012. Variable dividend rate resets quarterly thereafter at a per annum rate equal to the greater of 4.50% or 3-Month LIBOR plus 0.75%. As of December 31, 2012, the annual dividend rate was 4.50%.

[10] Rate effective December 31, 2012. Variable dividend rate resets quarterly thereafter at a per annum rate equal to the greater of 7.75% or 3-Month LIBOR plus 4.23%. As of December 31, 2012, the annual dividend rate was 7.75%.