Equity (Details Textuals 1) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, shares issued	84,000,000				84,000,000				84,000,000	84,000,000
Preferred stock, par value	$ 0.01				$ 0.01				$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	$ 2,100				$ 2,100				$ 2,100	$ 2,100
Fair Value of Stock Issued											$ 2,805,000,000
Redemption premium on convertible preferred stock	0	0	0	0	0	0	0	146,000,000	0	146,000,000	0
Convertible Preferred Stock [Member]
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, shares issued	6,857,000								6,857,000		6,857,000
Preferred stock, par value											$ 0.01
Preferred stock, aggregate liquidation preference											$ 0.01
Fair Value of Stock Issued											0
Redemption premium on convertible preferred stock										146,000,000
Convertible Preferred Stock Redemption Date										Mar. 08, 2011
Redemption of Convertible Preferred Stock					$ 3,000,000,000					$ 3,000,000,000