Equity (Schedule Of Preferred Stock) (Details) (USD $)				9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Aug. 19, 2013	Dec. 31, 2012	Sep. 30, 2013 Series F-2 Preferred Stock [Member]	Dec. 31, 2012 Series F-2 Preferred Stock [Member]	Sep. 30, 2013 Series A Preferred Stock [Member]	Dec. 31, 2012 Series A Preferred Stock [Member]	Sep. 30, 2013 Series G Preferred Stock [Member]	Dec. 31, 2012 Series G Preferred Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Mandatorily convertible preferred stock held by U.S. Department of Treasury	$ 5,685,000,000		$ 5,685,000,000	$ 5,685,000,000	$ 5,685,000,000
Preferred stock	1,255,000,000		1,255,000,000			1,021,000,000	1,021,000,000	234,000,000	234,000,000
Preferred stock par value (per share)				$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Liquidation preference (per share)				$ 50	$ 50	$ 25	$ 25	$ 1,000	$ 1,000
Preferred Stock, Shares Authorized				228,750,000	228,750,000	160,870,560	160,870,560	2,576,601	2,576,601
Preferred Stock, Shares Issued and Outstanding				118,750,000	118,750,000	40,870,560	40,870,560	2,576,601	2,576,601
Preferred Stock, Dividend Rate, Percentage				9.00%	9.00%	8.50%	8.50%	7.00%	7.00%
Preferred Stock, Dividend Payment Rate, Variable						Three month LIBOR + 6.243%	Three month LIBOR + 6.243%
Redemption/call feature				Perpetual (b)	Perpetual (b)	Perpetual (c)	Perpetual (c)	Perpetual (e)	Perpetual (e)
Conversion rate of MCP to common stock after December 30, 2016	0.00432
Common share value of MCP to common stock after December 30, 2016	$ 11,574
Aggregate shares of commont stock agreed to issue and sell in a private placement, if certain considerations are met		166,667
Common Stock, Par or Stated Value Per Share		$ 0.01
The cash inflow associated with the amount that will be received from entity's raising of capital via private rather than public placement if certain considerations are met.		$ 1,000,000,000