Earnings per common share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Computations of Basic Earnings Per Common Share

The computations of basic earnings per common share follow:

	Three Months Ended June 30						Six Months Ended June 30
	2017			2016			2017			2016
	(In thousands, except per share)
Income available to common shareholders:
Net income	$	381,053			336,031			729,980			634,559
Less: Preferred stock dividends (a)		(18,237	)		(20,317	)		(36,474	)		(40,635	)
Net income available to common equity		362,816			315,714			693,506			593,924
Less: Income attributable to unvested stock-based    compensation awards		(2,158	)		(2,746	)		(4,298	)		(5,227	)
Net income available to common shareholders	$	360,658			312,968			689,208			588,697
Weighted-average shares outstanding:
Common shares outstanding (including common stock    issuable) and unvested stock-based compensation awards		153,770			159,164			154,612			159,692
Less: Unvested stock-based compensation awards		(913	)		(1,362	)		(974	)		(1,424	)
Weighted-average shares outstanding		152,857			157,802			153,638			158,268
Basic earnings per common share	$	2.36			1.98			4.49			3.72

 (a)Including impact of not as yet declared cumulative dividends.

Computations of Diluted Earnings Per Common Share

The computations of diluted earnings per common share follow:

	Three Months Ended June 30						Six Months Ended June 30
	2017			2016			2017			2016
	(In thousands, except per share)
Net income available to common equity	$	362,816			315,714			693,506			593,924
Less: Income attributable to unvested stock-based    compensation awards		(2,154	)		(2,740	)		(4,289	)		(5,217	)
Net income available to common shareholders	$	360,662			312,974			689,217			588,707
Adjusted weighted-average shares outstanding:
Common and unvested stock-based compensation awards		153,770			159,164			154,612			159,692
Less: Unvested stock-based compensation awards		(913	)		(1,362	)		(974	)		(1,424	)
Plus: Incremental shares from assumed conversion of    stock-based compensation awards and warrants to    purchase common stock		419			539			470			493
Adjusted weighted-average shares outstanding		153,276			158,341			154,108			158,761
Diluted earnings per common share	$	2.35			1.98			4.47			3.71