Nine Months Ended September 30, | ||||||||||||||||||||||||||||
2013 | 2014 | 2015 | 2016 | 2017 | 2017 | 2018 | ||||||||||||||||||||||
Income before income tax expense | $ | 416,527 | $ | 333,752 | $ | 439,064 | $ | 414,436 | $ | 491,465 | $ | 378,272 | $ | 367,368 | ||||||||||||||
Add: Fixed charges | 91,182 | 98,404 | 132,048 | 189,717 | 312,396 | 220,979 | 370,592 | |||||||||||||||||||||
Total earnings | $ | 507,709 | $ | 432,156 | $ | 571,112 | $ | 604,153 | $ | 803,861 | $ | 599,251 | $ | 737,960 | ||||||||||||||
Interest expense | $ | 89,085 | $ | 95,815 | $ | 128,619 | $ | 185,908 | $ | 308,082 | $ | 217,777 | $ | 366,942 | ||||||||||||||
Rental expense, net of income | 2,097 | 2,589 | 3,429 | 3,809 | 4,314 | 3,202 | 3,650 | |||||||||||||||||||||
Total fixed charges | 91,182 | 98,404 | 132,048 | 189,717 | 312,396 | 220,979 | 370,592 | |||||||||||||||||||||
Preferred stock dividends | — | 12,933 | 19,595 | 21,204 | 15,714 | 12,577 | 11,441 | |||||||||||||||||||||
Total fixed charges and preferred stock dividends | $ | 91,182 | $ | 111,337 | $ | 151,643 | $ | 210,921 | $ | 328,110 | $ | 233,556 | $ | 382,033 | ||||||||||||||
Ratio of earnings to fixed charges(1) | 5.57 | 4.39 | 4.33 | 3.18 | 2.57 | 2.71 | 1.99 | |||||||||||||||||||||
Ratio of earnings to fixed charges and preferred stock dividends(1) | 5.57 | 3.88 | 3.77 | 2.86 | 2.45 | 2.57 | 1.93 | |||||||||||||||||||||
(1) | For purposes of computing these ratios, earnings represent income before income tax expense plus fixed charges. Fixed charges represent interest expensed and capitalized plus one-third (the proportion deemed representative of the interest factor) of rents, net of income from subleases. |