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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
|
Sep. 30, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common stock, par value in dollars | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 750,000,000 | 750,000,000 |
| Common stock, shares issued | 360,192,010 | 357,202,750 |
| Common stock, shares outstanding | 360,192,010 | 357,202,750 |