|
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
|
Mar. 31, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common stock, par value per share | $ 0.01 | $ 0.01 |
| Common stock, shares issued | 370,949,721 | 370,570,565 |
| Common stock, shares outstanding | 370,732,369 | 370,363,803 |