|
CONDENSED CONSOLIDATED BALANCE SHEETS-Unaudited (Parenthetical) (USD $)
|
3 Months Ended |
12 Months Ended |
|
Mar. 31, 2015
|
Dec. 31, 2014
|
| Class of Stock [Line Items] |
|
|
| Common stock, par value (in dollars per share) |
$ 0.01 |
0.01 |
| Common stock, shares authorized |
1,000,000,000 |
1,000,000,000 |
| Common stock, shares issued |
425,883,631 |
399,508,751 |
| Common stock, shares outstanding |
423,073,605 |
396,698,725 |
| Treasury stock, shares |
2,810,026 |
2,810,026 |
| Preferred Stock |
|
|
| Class of Stock [Line Items] |
|
|
| Preferred stock, par value (in dollars per share) |
$ 0.01 |
0.01 |
| Preferred stock, shares authorized |
20,000,000 |
20,000,000 |
| Series A Preferred Stock |
|
|
| Class of Stock [Line Items] |
|
|
| Preferred stock, par value (in dollars per share) |
$ 0.01 |
|
| Preferred stock, shares issued |
6,000,000 |
6,000,000 |
| Preferred stock, shares outstanding |
6,000,000 |
6,000,000 |
| Preferred Stock, Dividend Rate, Percentage |
5.25% |
5.25% |
| Series B Preferred Stock |
|
|
| Class of Stock [Line Items] |
|
|
| Preferred stock, shares issued |
1,375,000 |
0 |
| Preferred stock, shares outstanding |
1,375,000 |
0 |
| Preferred Stock, Dividend Rate, Percentage |
5.50% |
5.50% |