Earnings per common share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Computations of Basic Earnings Per Common Share

The computations of basic earnings per common share follow:

	Three Months Ended March 31
	2023			2022
	(In thousands, except per share)
Income available to common shareholders:
Net income	$	701,624		$	362,174
Less: Preferred stock dividends		(24,941	)		(21,765	)
Net income available to common equity		676,683			340,409
Less: Income attributable to unvested stock-based    compensation awards		(1,175	)		(820	)
Net income available to common shareholders	$	675,508		$	339,589
Weighted-average shares outstanding:
Common shares outstanding (including common    stock issuable) and unvested stock-based    compensation awards		168,010			129,274
Less: Unvested stock-based compensation awards		(278	)		(329	)
Weighted-average shares outstanding		167,732			128,945
Basic earnings per common share	$	4.03		$	2.63

Computations of Diluted Earnings Per Common Share

The computations of diluted earnings per common share follow:

	Three Months Ended March 31
	2023			2022
	(In thousands, except per share)
Net income available to common equity	$	676,683		$	340,409
Less: Income attributable to unvested stock-based    compensation awards		(1,172	)		(819	)
Net income available to common shareholders	$	675,511		$	339,590
Adjusted weighted-average shares outstanding:
Common and unvested stock-based compensation    awards		168,010			129,274
Less: Unvested stock-based compensation awards		(278	)		(329	)
Plus: Incremental shares from assumed conversion    of stock-based compensation awards and warrants    to purchase common stock		678			471
Adjusted weighted-average shares outstanding		168,410			129,416
Diluted earnings per common share	$	4.01		$	2.62