Earnings per common share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Computations of Basic Earnings Per Common Share

The computations of basic earnings per common share follow:

	Three Months Ended September 30						Nine Months Ended September 30
	2020			2019			2020			2019
	(In thousands, except per share)
Income available to common shareholders:
Net income	$	372,136			480,081			882,012			1,436,083
Less: Preferred stock dividends		(17,050	)		(16,103	)		(51,178	)		(52,364	)
Net income available to common equity		355,086			463,978			830,834			1,383,719
Less: Income attributable to unvested stock-based    compensation awards		(1,687	)		(2,568	)		(3,631	)		(7,591	)
Net income available to common shareholders	$	353,399			461,410			827,203			1,376,128
Weighted-average shares outstanding:
Common shares outstanding (including common stock    issuable) and unvested stock-based compensation    awards		129,061			133,703			129,518			136,156
Less: Unvested stock-based compensation awards		(776	)		(738	)		(768	)		(745	)
Weighted-average shares outstanding		128,285			132,965			128,750			135,411
Basic earnings per common share	$	2.75			3.47			6.42			10.16

Computations of Diluted Earnings Per Common Share

The computations of diluted earnings per common share follow:

	Three Months Ended September 30						Nine Months Ended September 30
	2020			2019			2020			2019
	(In thousands, except per share)
Net income available to common equity	$	355,086			463,978			830,834			1,383,719
Less: Income attributable to unvested stock-based    compensation awards		(1,686	)		(2,568	)		(3,630	)		(7,590	)
Net income available to common shareholders	$	353,400			461,410			827,204			1,376,129
Adjusted weighted-average shares outstanding:
Common and unvested stock-based compensation    awards		129,061			133,703			129,518			136,156
Less: Unvested stock-based compensation awards		(776	)		(738	)		(768	)		(745	)
Plus: Incremental shares from assumed conversion of    stock-based compensation awards and warrants to    purchase common stock		70			34			63			32
Adjusted weighted-average shares outstanding		128,355			132,999			128,813			135,443
Diluted earnings per common share	$	2.75			3.47			6.42			10.16