Three Months Ended March 31, 2018 | Year Ended December 31, 2017 | Year Ended December 31, 2016 | Year Ended December 31, 2015 | Year Ended December 31, 2014 | Year Ended December 31, 2013 | |||||||||||||||||||
Net income from continuing operations, less preferred distributions | $ | 73,524 | $ | 290,592 | $ | 298,421 | $ | 188,248 | $ | 196,219 | $ | 45,338 | ||||||||||||
Preferred distributions | — | — | — | — | 24,943 | 31,616 | ||||||||||||||||||
Interest expense from continuing operations | 20,000 | 87,003 | 112,757 | 138,258 | 162,108 | 168,327 | ||||||||||||||||||
Earnings before fixed charges, continuing operations | $ | 93,524 | $ | 377,595 | $ | 411,178 | $ | 326,506 | $ | 383,270 | $ | 245,281 | ||||||||||||
Interest expense from discontinued operations | — | 14,736 | 28,819 | 40,911 | 58,426 | 71,496 | ||||||||||||||||||
Earnings before fixed charges | $ | 93,524 | $ | 392,331 | $ | 439,997 | $ | 367,417 | $ | 441,696 | $ | 316,777 | ||||||||||||
Interest expense from continuing operations | $ | 20,000 | $ | 87,003 | $ | 112,757 | $ | 138,258 | $ | 162,108 | $ | 168,327 | ||||||||||||
Interest costs capitalized | 8,094 | 18,885 | 16,099 | 16,764 | 17,620 | 16,756 | ||||||||||||||||||
Total fixed charges, continuing operations | 28,094 | 105,888 | 128,856 | 155,022 | 179,728 | 185,083 | ||||||||||||||||||
Interest expense from discontinued operations | — | 14,736 | 28,819 | 40,911 | 58,426 | 71,496 | ||||||||||||||||||
Total fixed charges | 28,094 | 120,624 | 157,675 | 195,933 | 238,154 | 256,579 | ||||||||||||||||||
Preferred distributions | — | — | — | — | 24,943 | 31,616 | ||||||||||||||||||
Total fixed charges and preferred distributions, continuing operations | $ | 28,094 | $ | 105,888 | $ | 128,856 | $ | 155,022 | $ | 204,671 | $ | 216,699 | ||||||||||||
Total fixed charges and preferred distributions | $ | 28,094 | $ | 120,624 | $ | 157,675 | $ | 195,933 | $ | 263,097 | $ | 288,195 | ||||||||||||
Ratio of earnings to fixed charges, continuing operations | 3.33 | 3.57 | 3.19 | 2.11 | 2.13 | 1.33 | ||||||||||||||||||
Ratio of earnings to fixed charges and preferred distributions, continuing operations | 3.33 | 3.57 | 3.19 | 2.11 | 1.87 | 1.13 | ||||||||||||||||||
Ratio of earnings to fixed charges | 3.33 | 3.25 | 2.79 | 1.88 | 1.85 | 1.23 | ||||||||||||||||||
Ratio of earnings to fixed charges and preferred distributions | 3.33 | 3.25 | 2.79 | 1.88 | 1.68 | 1.10 |