|
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
|
Jun. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common stock, par value per share (in USD per share) | $ 0.01 | $ 0.01 |
| Common stock, shares issued | 399,030,681 | 370,570,565 |
| Common stock, shares outstanding | 398,812,745 | 370,363,803 |