CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net income (loss)	$ 124,070	$ 202,159
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for (reversal of) credit losses	53,980	32,154
Depreciation, amortization, and accretion, net	17,854	20,088
Deferred income tax expense (benefit)	2,446	706
Originations of loans held for sale	(468,414)	(143,149)
Proceeds from sales and payments on loans held for sale	392,753	275,274
Gain on sales of loans held for sale, net	(2,419)	(2,716)
(Increase) decrease in other assets	(81,810)	(63,174)
Increase (decrease) in other liabilities	(22,298)	25,417
Investment securities (gains) losses, net	0	(1,030)
Share-based compensation expense	7,914	8,711
Net cash provided by (used in) operating activities	24,076	354,440
Investing Activities
Proceeds from maturities and principal collections of investment securities available for sale	196,020	205,098
Proceeds from sales of investment securities available for sale	0	82,595
Purchases of investment securities available for sale	(258,482)	(193,009)
Net proceeds from sales of loans	2,548	1,505
Net (increase) decrease in loans	28,830	(773,103)
Net (purchases) redemptions of Federal Home Loan Bank stock	(16,626)	(7,439)
Net (purchases) redemptions of Federal Reserve Bank stock	(12,144)	(7,108)
Net proceeds from settlement (purchases) of bank-owned life insurance policies	0	2,514
Net increase in premises, equipment and software	(18,490)	(6,519)
Other	0	3,015
Net cash provided by (used in) investing activities	(78,344)	(692,451)
Financing Activities
Net increase (decrease) in deposits	(157,277)	1,070,206
Net increase (decrease) in federal funds purchased and securities sold under repurchase agreements	(60,830)	49,107
Net increase (decrease) in other short-term borrowings	248,973	(350,232)
Proceeds from long-term debt, net	100,000	1,020,912
Dividends paid to common shareholders	(55,733)	(49,465)
Dividends paid to preferred shareholders	(9,685)	(8,291)
Repurchases of common stock	(30,015)	0
Issuances, net of taxes paid, under equity compensation plans	(9,091)	(6,606)
Net cash provided by (used in) financing activities	26,342	1,725,631
Increase (decrease) in cash and cash equivalents including restricted cash	(27,926)	1,387,620
Cash, cash equivalents, and restricted cash, at beginning of period	2,451,426	1,977,780
Cash, cash equivalents, and restricted cash at end of period	2,423,500	3,365,400
Supplemental Disclosures:
Income taxes paid	28,798	52,157
Interest paid	385,188	206,624
Non-cash Activities
Loans foreclosed and transferred to other real estate	$ 21,210	$ 0