CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 845,502	$ 728,825
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses (benefit)	33,499	(160,414)
Goodwill impairment losses	9,000	0
Amortization of intangibles	2,481	3,089
Depreciation and amortization of premises and equipment	41,207	41,416
Net accretion of discounts and amortization of premiums and deferred fees	39,142	(21,773)
Interest capitalized on loans subject to the temporary payment moratorium or loss mitigation alternatives	(9,249)	(12,735)
Share-based compensation	14,822	16,186
Impairment losses on right-of-use and long-lived assets	688	303
Fair value adjustments on mortgage servicing rights	(2,776)	11,706
Fair value adjustment for contingent consideration	(9,241)	0
Adjustments to indemnity reserves on loans sold	(1,140)	(3,008)
Earnings from investments under the equity method, net of dividends or distributions	(22,011)	(39,135)
Deferred income tax expense	50,460	198,110
(Gain) loss on:
Disposition of premises and equipment and other productive assets	(7,221)	(18,292)
Sale of debt securities	0	(23)
Sale of loans, including valuation adjustments on loans held-for-sale and mortgage banking activities	374	(16,183)
Disposition of stock as part of the Evertec Transactions	(240,412)	0
Sale of foreclosed assets, including write-downs	(24,339)	(23,622)
Acquisitions of loans held-for-sale	(118,368)	(191,591)
Proceeds from sale of loans held-for-sale	51,468	73,362
Net originations on loans held-for-sale	(191,570)	(413,258)
Net decrease (increase) in:
Trading debt securities	338,166	535,835
Equity securities	3,633	(1,621)
Accrued income receivable	(21,236)	8,584
Other assets	46,812	2,379
Net decrease in:
Interest payable	(4,936)	(10,483)
Pension and other postretirement benefits obligation	(2,252)	(3,078)
Other liabilities	(9,095)	(6,605)
Total adjustments	(32,094)	(30,851)
Net cash provided by operating activities	813,408	697,974
Cash flows from investing activities:
Net decrease (increase) in money market investments	13,562,791	(5,884,981)
Purchases of investment securities:
Available-for-sale	(18,142,424)	(12,117,969)
Held-to-maturity	(1,879,443)	0
Equity	(34,029)	(11,648)
Proceeds from calls, paydowns, maturities and redemptions of investment securities:
Available-for-sale	12,066,879	7,903,982
Held-to-maturity	9,185	8,869
Proceeds from sale of investment securities:
Available-for-sale	0	235,992
Equity	34,450	2,688
Net (disbursements) repayments on loans	(1,762,828)	680,937
Proceeds from sale of loans	56,611	99,680
Acquisition of loan portfolios	(580,625)	(213,804)
Payments to acquire other intangible	0	(1,185)
Return of capital from equity method investments	0	3,616
Payments to acquire equity method investments	(1,625)	0
Proceeds from Evertec Stock Sale	219,883	0
Acquisition of premises and equipment	(67,887)	(50,809)
Proceeds from sale of:
Premises and equipment and other productive assets	8,963	19,874
Foreclosed assets	75,719	69,456
Net cash provided by (used in) investing activities	3,565,620	(9,255,302)
Net (decrease) increase in:
Deposits	(2,177,088)	9,148,635
Assets sold under agreements to repurchase	70,847	(34,833)
Other short-term borrowings	175,000	0
Payment of notes payable	(101,000)	(49,009)
Principal payments of finance leases	(2,363)	(2,262)
Proceeds from issuance of common stock	4,285	3,461
Dividends paid	(121,190)	(104,808)
Net payments for repurchase of common stock	(631,749)	(350,521)
Payments related to tax witholding for share-based compensation	(5,771)	(5,050)
Net cash (used in) provided by financing activities	(2,789,029)	8,605,613
Net increase in cash and due from banks, and restricted cash	1,589,999	48,285
Cash and due from banks and restricted cash at beginning of period	434,512	497,094
Cash and due from banks and restricted cash at end of period	$ 2,024,511	$ 545,379