EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings per common share
Net income	$ 223,358	$ 211,964	$ 417,427	$ 607,425
Less: Preferred share dividends	7,563	7,563	15,125	15,125
Net income available to common shareholders	$ 215,795	$ 204,401	$ 402,302	$ 592,300
Weighted average common shares outstanding (in shares)	78,378	84,475	79,757	84,677
Earnings per common share (in usd per share)	$ 2.75	$ 2.42	$ 5.04	$ 6.99
Earnings per diluted common share
Net income available to common shareholders	$ 215,795	$ 204,401	$ 402,302	$ 592,300
Weighted average common shares outstanding (in shares)	78,378	84,475	79,757	84,677
Share-based compensation plans (in shares)	951	851	1,088	832
Weighted average diluted common shares outstanding (in shares)	79,329	85,326	80,845	85,509
Earnings per diluted common share (in usd per share)	$ 2.72	$ 2.40	$ 4.98	$ 6.93
Weighted average anti-dilutive shares excluded from the dilutive computation (in shares)	7	6	3	377