Equity (Convertible Preferred Stock - Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, shares issued	84,000,000	84,000,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, aggregate liquidation preference	$ 2,100	$ 2,100
Fair Value of Stock Issued			$ 2,805,000,000
Redemption premium on convertible preferred stock	0	0	146,000,000
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
Preferred stock, par value		$ 0.01
Preferred stock, aggregate liquidation preference		$ 0.01
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