Earnings per common share (Tables)

6 Months Ended

Jun. 30, 2019

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
	2019			2018			2019			2018
	(In thousands, except per share)
Income available to common shareholders:
Net income	$	473,260			493,160			956,002			845,770
Less: Preferred stock dividends (a)		(18,130	)		(18,130	)		(36,260	)		(36,260	)
Net income available to common equity		455,130			475,030			919,742			809,510
Less: Income attributable to unvested stock-based    compensation awards		(2,498	)		(2,432	)		(5,024	)		(4,172	)
Net income available to common shareholders	$	452,632			472,598			914,718			805,338
Weighted-average shares outstanding:
Common shares outstanding (including common stock    issuable) and unvested stock-based compensation awards		136,182			145,571			137,403			147,510
Less: Unvested stock-based compensation awards		(749	)		(746	)		(749	)		(764	)
Weighted-average shares outstanding		135,433			144,825			136,654			146,746
Basic earnings per common share	$	3.34			3.26			6.69			5.49

 (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
	2019			2018			2019			2018
	(In thousands, except per share)
Net income available to common equity	$	455,130			475,030			919,742			809,510
Less: Income attributable to unvested stock-based    compensation awards		(2,497	)		(2,430	)		(5,023	)		(4,168	)
Net income available to common shareholders	$	452,633			472,600			914,719			805,342
Adjusted weighted-average shares outstanding:
Common and unvested stock-based compensation awards		136,182			145,571			137,403			147,510
Less: Unvested stock-based compensation awards		(749	)		(746	)		(749	)		(764	)
Plus: Incremental shares from assumed conversion of    stock-based compensation awards and warrants to    purchase common stock		31			173			31			195
Adjusted weighted-average shares outstanding		135,464			144,998			136,685			146,941
Diluted earnings per common share	$	3.34			3.26			6.69			5.48