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Earnings per common share (Tables)
 12 Months Ended
Dec. 31, 2018
Earnings Per Share [Abstract]  
Computations of Basic Earnings Per Common Share

The computations of basic earnings per common share follow:

 

 

Year Ended December 31

 

 

 

2019

 

 

2018

 

 

2017

 

 

 

(In thousands, except per share)

 

Income available to common shareholders:

 

 

 

 

 

 

 

 

 

 

 

 

Net income

 

$

1,929,149

 

 

$

1,918,080

 

 

$

1,408,306

 

Less: Preferred stock dividends(a)

 

 

(69,441

)

 

 

(72,521

)

 

 

(72,734

)

Net income available to common equity

 

 

1,859,708

 

 

 

1,845,559

 

 

 

1,335,572

 

Less: Income attributable to unvested stock-based

   compensation awards

 

 

(10,199

)

 

 

(9,531

)

 

 

(8,069

)

Net income available to common shareholders

 

$

1,849,509

 

 

$

1,836,028

 

 

$

1,327,503

 

Weighted-average shares outstanding:

 

 

 

 

 

 

 

 

 

 

 

 

Common shares outstanding (including common stock

   issuable) and unvested stock-based compensation awards

 

 

135,169

 

 

 

144,740

 

 

 

153,092

 

Less: Unvested stock-based compensation awards

 

 

(741

)

 

 

(748

)

 

 

(933

)

Weighted-average shares outstanding

 

 

134,428

 

 

 

143,992

 

 

 

152,159

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic earnings per common share

 

$

13.76

 

 

$

12.75

 

 

$

8.72

 

 

(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:

 

 

Year Ended December 31

 

 

 

2019

 

 

2018

 

 

2017

 

 

 

(In thousands, except per share)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net income available to common equity

 

$

1,859,708

 

 

$

1,845,559

 

 

$

1,335,572

 

Less: Income attributable to unvested stock-based

   compensation awards

 

 

(10,197

)

 

 

(9,524

)

 

 

(8,055

)

Net income available to common shareholders

 

$

1,849,511

 

 

$

1,836,035

 

 

$

1,327,517

 

Adjusted weighted-average shares outstanding:

 

 

 

 

 

 

 

 

 

 

 

 

Common and unvested stock-based compensation awards

 

 

135,169

 

 

 

144,740

 

 

 

153,092

 

Less: Unvested stock-based compensation awards

 

 

(741

)

 

 

(748

)

 

 

(933

)

Plus: Incremental shares from assumed conversion of

   stock-based compensation awards and warrants to

   purchase common stock

 

 

34

 

 

 

159

 

 

 

392

 

Adjusted weighted-average shares outstanding

 

 

134,462

 

 

 

144,151

 

 

 

152,551

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diluted earnings per common share

 

$

13.75

 

 

$

12.74

 

 

$

8.70