CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 791,320	$ 655,185
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	81,980	116,371
Amortization of premiums and accretion of discount, net	26,336	17,392
Stock compensation costs	29,338	24,047
Deferred income tax (benefit) expense	(6,107)	787
Provision for (reversal of) credit losses	48,500	(25,000)
Net gains on sales of loans	(5,968)	(6,601)
Gains on sales of AFS debt securities	(1,306)	(1,178)
Loans held-for-sale:
Originations and purchases	(447)	(9,323)
Proceeds from sales and paydowns/payoffs of loans originally classified as held-for-sale	461	11,337
Proceeds from distributions received from equity method investees	5,642	7,624
Net change in accrued interest receivable and other assets	56,958	(78,649)
Net change in accrued expenses and other liabilities	584,655	30,179
Other operating activities, net	5,057	3,660
Total adjustments	825,099	90,646
Net cash provided by operating activities	1,616,419	745,831
CASH FLOWS FROM INVESTING ACTIVITIES
Investments in qualified affordable housing partnerships, tax credit and other investments	(91,710)	(141,882)
Interest-bearing deposits with banks	105,479	4,576
Resale agreements:
Proceeds from paydowns and maturities	1,719,076	698,274
Purchases	(258,559)	(1,834,416)
AFS debt securities:
Proceeds from sales	129,181	236,967
Proceeds from repayments, maturities and redemptions	711,950	1,346,839
Purchases	(769,007)	(5,884,389)
HTM debt securities:
Proceeds from repayments, maturities and redemptions	60,140	0
Purchases	(50,000)	0
Loans held-for-investment:
Proceeds from sales of loans originally classified as held-for-investment	453,315	416,426
Purchases	(599,660)	(746,395)
Other changes in loans held-for-investment, net	(5,675,012)	(1,798,011)
Proceeds from sales of OREO	0	28,560
Purchase of bank-owned life insurance	0	(150,000)
Proceeds from distributions received from equity method investees	13,557	5,626
Other investing activities, net	920	(61)
Net cash used in investing activities	(4,250,330)	(7,817,886)
CASH FLOWS FROM FINANCING ACTIVITIES
Net change in deposits	623,025	8,486,734
Net change in federal funds purchased and short-term borrowings	200,006	(21,143)
FHLB advances:
Proceeds	4,600,200	0
Repayment	(4,525,200)	(405,000)
Repurchase agreements:
Proceeds from repurchase agreements	311,785	0
Long-term debt and lease liabilities:
Repayment of long-term debt and lease liabilities	(710)	(909)
Common stock:
Repurchase of common stocks pursuant to the Stock Repurchase Program	(99,990)	0
Proceeds from issuance pursuant to various stock compensation plans and agreements	1,444	1,180
Stocks tendered for payment of withholding taxes	(18,983)	(15,508)
Cash dividends paid	(171,991)	(141,911)
Net cash provided by financing activities	919,586	7,903,443
Effect of exchange rate changes on cash and cash equivalents	(35,257)	3,542
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(1,749,582)	834,930
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	3,912,935	4,017,971
CASH AND CASH EQUIVALENTS, END OF PERIOD	2,163,353	4,852,901
Cash paid during the period for:
Interest	107,146	70,833
Income taxes, net	233,082	137,452
Noncash investing and financing activities:
Securities transferred from AFS to HTM debt securities	3,010,003	0
Loans transferred from held-for-investment to held-for-sale	463,769	411,416
Loans transferred to other real estate owned (“OREO”) and other foreclosed assets	$ 0	$ 49,122