CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 285,075	$ 322,439
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	25,000	20,000
Depreciation and amortization	50,998	32,567
Amortization of premiums (accretion of discount), net	648	(4,497)
Stock compensation costs	12,988	11,075
Deferred income tax (benefit) expense	(6,905)	609
Net losses on sales of loans	41	22
Net (gains) losses on AFS debt securities	(49)	10,000
Loans held-for-sale:
Originations and purchases	(850)	0
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	992	0
Distributions received from equity method investees	978	1,718
Net change in accrued interest receivable and other assets	75,815	(75,163)
Net change in accrued expenses and other liabilities	(177,732)	(93,948)
Other operating activities, net	(760)	(1,921)
Total adjustments	(18,836)	(99,538)
Net cash provided by operating activities	266,239	222,901
Net (increase) decrease in:
Affordable housing partnership, tax credit and CRA investments	(106,536)	(27,358)
Interest-bearing deposits with banks	(14,252)	128,772
Assets purchased under resale agreements:
Proceeds from paydowns and maturities	300,000	150,629
Purchases	0	(12,725)
AFS debt securities:
Proceeds from sales	537,195	0
Proceeds from repayments, maturities and redemptions	577,750	321,913
Purchases	(3,337,121)	(532,758)
HTM debt securities:
Proceeds from repayments, maturities and redemptions	11,270	12,387
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	241,907	179,237
Purchases	(108,174)	(155,016)
Other changes in loans held-for-investment, net	110,120	(695,646)
Redemption of trust preferred securities	3,558	0
Proceeds from sales of other real estate owned (“OREO”) and other foreclosed assets	0	1,976
Distributions received from equity method investees	847	2,244
Purchases of FHLB stock	(84,294)	0
Other investing activities, net	(3,846)	(6,501)
Net cash used in investing activities	(1,871,576)	(632,846)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	2,475,059	(1,246,189)
Net change in short-term borrowings	(4,480,827)	4,500,017
FHLB advances:
Proceeds	3,500,000	6,000,000
Repayment	0	(6,000,000)
Repurchase agreements:
Repayment	0	(300,000)
Extinguishment cost	0	(3,872)
Long-term debt and lease liabilities:
Repayment of junior subordinated debt and lease liabilities	(116,798)	(203)
Common stock:
Stock tendered for payment of withholding taxes	(13,702)	(21,791)
Repurchase of common stocks pursuant to the stock repurchase program	(82,441)	0
Cash dividends paid	(79,304)	(70,776)
Net cash provided by financing activities	1,201,987	2,857,186
Effect of exchange rate changes on cash and cash equivalents	(833)	5,169
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(404,183)	2,452,410
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	4,614,984	3,481,784
CASH AND CASH EQUIVALENTS, END OF PERIOD	4,210,801	5,934,194
Cash paid during the period for:
Interest	600,438	227,504
Income taxes, net	38,619	0
Noncash investing and financing activities:
Loans transferred from held-for-investment to held-for-sale	199,974	$ 160,476
Loans transferred to OREO and other foreclosed assets	$ 5,551