Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Undesignated preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	9,000,000,000	9,000,000,000
Common stock, shares issued (in shares)	6,442,718,811	5,262,440,085
Common stock, shares outstanding (in shares)	6,433,648,535	5,262,440,085
Treasury stock, shares (in shares)	9,070,276	0
Convertible Perpetual Preferred Stock, Series B-1
Preferred stock, liquidation preference (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares issued (in shares)	0	6,250,100
Preferred stock, shares outstanding (in shares)	0	6,250,100