Exhibit 12.1

Ratio of Earnings to Fixed Charges and Preferred Stock Dividends

	Three Months
	Ended		Year Ended December 31,
	March 31, 2018		2017		2016		2015		2014		2013
	(In thousands, except ratio amounts)
Income from continuing operations before income taxes	$	338,593	$	297,757	$	330,235	$	475,512	$	93,401	$	659,451
Fixed charges (interest expenses and preferred stock dividends)	110,307		375,310		213,284		141,790		107,450		100,407
Earnings adjusted	448,900		673,067		543,519		617,302		200,851		759,858
Ratio of earnings to fixed charges and preferred stock dividends	4.1		1.8		2.5		4.4		1.9		7.6