EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings per common share
Net income	$ 211,964	$ 150,674	$ 607,425	$ 330,773
Less: Preferred share dividends	7,563	7,563	15,125	15,125
Net income available to common shareholders	$ 204,401	$ 143,111	$ 592,300	$ 315,648
Weighted average common shares outstanding (in shares)	84,475	85,207	84,677	85,036
Earnings per common share (in usd per share)	$ 2.42	$ 1.68	$ 6.99	$ 3.71
Earnings per diluted common share
Net income available to common shareholders	$ 204,401	$ 143,111	$ 592,300	$ 315,648
Weighted average common shares outstanding (in shares)	84,475	85,207	84,677	85,036
Share-based compensation plans (in shares)	851	605	832	797
Weighted average diluted common shares outstanding (in shares)	85,326	85,812	85,509	85,833
Earnings per diluted common share (in usd per share)	$ 2.40	$ 1.67	$ 6.93	$ 3.68
Weighted average anti-dilutive shares excluded from the dilutive computation (in shares)	6	736	377	770