BOK Financial (BOKF) 10-Q 3 May 23 2023 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information	3 Months Ended
	Mar. 31, 2023 shares
Document and Entity Information [Abstract]
Entity Incorporation, State or Country Code	OK
Entity Tax Identification Number	73-1373454
Entity Address, Address Line One	Boston Avenue at Second Street
Entity Address, City or Town	Tulsa,
Entity Address, State or Province	OK
Document Transition Report	false
Document Quarterly Report	true
Entity Registrant Name	BOK FINANCIAL CORP
Entity Central Index Key	0000875357
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	66,600,833
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Document Type	10-Q
Entity File Number	001-37811
Amendment Flag	false
Document Period End Date	Mar. 31, 2023
City Area Code	918
Local Phone Number	588-6000
Entity Address, Postal Zip Code	74192
Current Fiscal Year End Date	--12-31

Consolidated Statements of Earn

Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest revenue [Abstract]
Loans	$ 367,870	$ 178,373
Residential mortgage loans held for sale	979	1,394
Trading securities	34,009	40,975
Investment securities	8,928	2,354
Available for sale securities	88,736	57,932
Fair value option securities	3,893	491
Restricted equity securities	5,808	1,107
Interest-bearing cash and cash equivalents	6,506	473
Total interest revenue	516,729	283,099
Interest expense [Abstract]
Deposits	95,274	7,598
Borrowed funds	67,038	5,788
Subordinated debentures	2,069	1,302
Total interest expense	164,381	14,688
Net interest revenue	352,348	268,411
Provision for credit losses	16,000	0
Net interest revenue after provision for credit losses	336,348	268,411
Total fees and commissions	185,979	97,635
Other gains (losses), net	2,251	(1,644)
Loss on derivatives, net	(1,344)	(46,981)
Loss on fair value option securities, net	(2,962)	(11,201)
Change in fair value of mortgage servicing rights	(6,059)	49,110
Gain on available for sale securities, net	0	937
Total other operating revenue	177,865	87,856
Other operating expense [Abstract]
Personnel	182,145	159,228
Business promotion	8,569	6,513
Professional fees and services	13,048	11,413
Net occupancy and equipment	28,459	30,855
Insurance	7,315	4,283
Data processing and communications	44,802	39,836
Printing, postage and supplies	3,893	3,689
Amortization of intangible assets	3,391	3,964
Mortgage banking costs	5,782	7,877
Other expense	8,408	9,960
Total other operating expense	305,812	277,618
Net income before taxes	208,401	78,649
Federal and state income taxes	45,905	16,197
Net income	162,496	62,452
Net income (loss) attributable to non-controlling interests	128	(36)
Net income attributable to BOK Financial Corporation shareholders	$ 162,368	$ 62,488
Earnings Per Share [Abstract]
Basic	$ 2.43	$ 0.91
Diluted	$ 2.43	$ 0.91
Average shares used in computation: [Abstract]
Basic	66,331,775	67,812,400
Diluted	66,331,775	67,813,851
Dividends declared per share	$ 0.54	$ 0.53
Brokerage and trading revenue [Member]
Total fees and commissions	$ 52,396	$ (27,079)
Transaction card revenue [Member]
Total fees and commissions	25,621	24,216
Fiduciary and asset management revenue [Member]
Total fees and commissions	50,657	46,399
Deposit service charges and fees [Member]
Total fees and commissions	25,968	27,004
Mortgage banking revenue [Member]
Total fees and commissions	14,367	16,650
Other revenue [Member]
Total fees and commissions	$ 16,970	$ 10,445

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 162,496	$ 62,452
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change in unrealized gain (loss)	124,045	(639,041)
Reclassification Adjustments Included in Earnings [Abstract]
Interest revenue, Investment securities	16,051	0
Gain on available for sale securities, net	0	(937)
Other comprehensive income (loss) before income taxes	140,096	(639,978)
Federal and state income taxes	31,695	(149,781)
Other comprehensive income (loss), net of income taxes	108,401	(490,197)
Comprehensive income (loss)	270,897	(427,745)
Comprehensive income (loss) attributable to non-controlling interests	128	(36)
Comprehensive income (loss) attributable to BOK Financial Corp. shareholders	$ 270,769	$ (427,709)

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets [Abstract]
Cash and due from banks	$ 792,371	$ 943,810
Interest-bearing cash and cash equivalents	571,613	457,906
Trading securities	2,294,358	4,464,161
Investment securities, net of allowance	2,448,136	2,513,687
Available for sale securities	11,937,841	11,493,860
Fair value option securities	326,390	296,590
Restricted equity securities	288,181	299,651
Residential mortgage loans held for sale	74,175	75,272
Loans	22,750,053	22,557,150
Allowance for loan losses	(249,460)	(235,704)
Loans, net of allowance	22,500,593	22,321,446
Premises and equipment, net	623,112	565,175
Receivables	265,680	273,815
Goodwill	1,044,749	1,044,749
Intangible assets, net	72,689	76,131
Mortgage servicing rights	299,803	277,608
Real estate and other repossessed assets, net of allowance	12,651	14,304
Derivative contracts, net	394,291	880,343
Cash surrender value of bank-owned life insurance	408,614	406,751
Receivable on unsettled securities sales	18,186	31,004
Other assets	1,150,689	1,354,379
Total assets	45,524,122	47,790,642
Deposits [Abstract]
Noninterest-bearing demand deposits	11,606,975	13,395,337
Interest-bearing deposits: [Abstract]
Transaction	18,434,489	18,659,115
Savings	962,673	964,411
Time	1,576,610	1,461,842
Total deposits	32,580,747	34,480,705
Funds purchased and repurchase agreements	1,599,724	2,270,377
Other borrowings	4,735,885	4,736,908
Subordinated debentures	131,148	131,205
Accrued interest, taxes and expense	268,449	296,870
Derivative contracts, net	510,483	554,900
Due on unsettled securities purchases	262,492	147,470
Other liabilities	557,167	484,849
Total liabilities	40,646,095	43,103,284
Shareholders' equity: [Abstract]
Common stock	5	5
Capital surplus	1,397,096	1,390,395
Retained earnings	4,950,176	4,824,164
Treasury stock	(743,937)	(694,960)
Accumulated other comprehensive income (loss)	(728,554)	(836,955)
Total shareholders' equity	4,874,786	4,682,649
Non-controlling interests	3,241	4,709
Total equity	4,878,027	4,687,358
Total liabilities and equity	$ 45,524,122	$ 47,790,642

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Investment securities [Abstract]
Investment Securities, Fair Value	$ 2,307,686	$ 2,346,768
Real estate and other repossessed assets, allowance	$ (4,406)	$ (10,115)
Shareholders' equity: [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.00006	$ 0.00006
Common Stock, Shares Authorized	2,500,000,000	2,500,000,000
Common Stock, Shares, Issued	(76,555,507)	(76,423,345)
Common Stock, Shares, Outstanding	(76,555,507)	(76,423,345)
Treasury stock, shares at cost (in shares)	9,954,674	9,464,711

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock, Common	Accumulated Other Comprehensive Income (Loss) [Member]	Total Shareholders' Equity [Member]	Non-Controlling Interests [Member]
Balance, beginning of period (in shares) at Dec. 31, 2021		76,254			7,786
Balance, beginning of period at Dec. 31, 2021	$ 5,368,371	$ 5	$ 1,378,794	$ 4,447,691	$ (535,129)	$ 72,371	$ 5,363,732	$ 4,639
Net income	62,452			62,488			62,488	(36)
Other comprehensive income (loss)	(490,197)					(490,197)	(490,197)
Repurchase of common stock (in shares)					476
Repurchase of common stock	(48,074)				$ (48,074)		(48,074)
Stock options exercised (in shares)		1
Stock options exercised	37		37				37
Non-vested shares awarded, net (in shares)		157
Vesting of non-vested shares (in shares)					46
Vesting of non-vested shares	(4,944)				$ (4,944)		(4,944)
Share-based compensation	2,835		2,835				2,835
Cash dividends on common stock	(36,295)			(36,295)			(36,295)
Capital calls and distributions, net	(661)							(661)
Balance, end of period (in shares) at Mar. 31, 2022		76,412			8,308
Balance, end of period at Mar. 31, 2022	4,853,524	$ 5	1,381,666	4,473,884	$ (588,147)	(417,826)	4,849,582	3,942
Balance, beginning of period (in shares) at Dec. 31, 2022		76,423			9,465
Balance, beginning of period at Dec. 31, 2022	4,687,358	$ 5	1,390,395	4,824,164	$ (694,960)	(836,955)	4,682,649	4,709
Net income	162,496			162,368			162,368	128
Other comprehensive income (loss)	108,401					108,401	108,401
Repurchase of common stock (in shares)					447
Repurchase of common stock	(44,476)				$ (44,476)		(44,476)
Stock options exercised (in shares)		0
Stock options exercised	0		0				0
Non-vested shares awarded, net (in shares)		133
Vesting of non-vested shares (in shares)					43
Vesting of non-vested shares	(4,501)				$ (4,501)		(4,501)
Share-based compensation	6,701		6,701				6,701
Cash dividends on common stock	(36,356)			(36,356)			(36,356)
Capital calls and distributions, net	(1,596)							(1,596)
Balance, end of period (in shares) at Mar. 31, 2023		76,556			9,955
Balance, end of period at Mar. 31, 2023	$ 4,878,027	$ 5	$ 1,397,096	$ 4,950,176	$ (743,937)	$ (728,554)	$ 4,874,786	$ 3,241

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows From Operating Activities: [Abstract]
Net income	$ 162,496	$ 62,452
Adjustments to reconcile net income to net cash used in operating activities: [Abstract]
Provision for credit losses	16,000	0
Change in fair value of mortgage servicing rights due to market assumption changes	6,059	(49,110)
Change in the fair value of mortgage servicing rights due to principal payments	5,382	7,960
Net unrealized (gains) losses from derivative contracts	61,704	(31,298)
Share-based compensation	6,701	2,835
Depreciation and amortization	26,885	26,091
Net amortization of discounts and premiums	(4,163)	3,216
Net losses (gains) on financial instruments and other losses (gains), net	(2,009)	706
Net loss (gain) on mortgage loans held for sale	1,361	(1,056)
Mortgage loans originated for sale	(138,624)	(418,866)
Proceeds from sale of mortgage loans held for sale	139,088	446,742
Capitalized mortgage servicing rights	(2,498)	(5,215)
Change in trading and fair value option securities	2,140,101	4,104,453
Change in receivables	11,032	(88,559)
Change in other assets	6,721	(19,589)
Change in other liabilities	28,544	(107,508)
Net cash provided by (used in) operating activities	2,464,780	3,933,254
Cash Flows From Investing Activities: [Abstract]
Proceeds from maturities or redemptions of investment securities	64,514	26,363
Proceeds from maturities or redemptions of available for sale securities	313,935	723,730
Purchases of available for sale securities	(631,168)	(1,161,606)
Proceeds from sales of available for sale securities	0	55,185
Change in amount receivable on unsettled available for sale securities transactions	9,864	(99,944)
Loans originated, net of principal collected	(187,088)	(460,128)
Net payments on derivative asset contracts	156,522	34,855
Net change in restricted equity securities	11,470	5,724
Proceeds from disposition of assets	7,401	9,708
Purchases of assets	(58,710)	(37,569)
Net cash provided by (used in) investing activities	(313,260)	(903,682)
Cash Flows From Financing Activities: [Abstract]
Net change in demand deposits, transaction deposits and savings accounts	(2,014,726)	(1,626,196)
Net change in time deposits	114,768	(189,912)
Net change in other borrowed funds	(677,232)	(1,271,195)
Net proceeds on derivative liability contracts	(158,021)	(30,779)
Net change in derivative margin accounts	579,188	(1,274,645)
Change in amount due on unsettled available for sale securities transactions	52,104	(17,198)
Issuance of common and treasury stock, net	(4,501)	(4,907)
Repurchase of common stock	(44,476)	(48,074)
Dividends paid	(36,356)	(36,295)
Net cash provided by (used in) financing activities	(2,189,252)	(4,499,201)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	(37,732)	(1,469,629)
Cash and cash equivalents at beginning of period	1,401,716	2,837,410
Cash and cash equivalents at end of period	1,363,984	1,367,781
Supplemental Cash Flow Information: [Abstract]
Cash paid for interest	163,960	13,982
Cash paid for taxes	733	858
Net loans and bank premises transferred to repossessed real estate and other assets	225	64
Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period	5,556	12,568
Conveyance of other real estate owned guaranteed by U.S. government agencies	1,150	1,812
Right-of-use assets obtained in exchange for operating lease liabilities	$ 63,521	$ 9,241

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	Basis of Presentation The accompanying unaudited consolidated financial statements of BOK Financial Corporation ("BOK Financial" or "the Company") have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The unaudited consolidated financial statements include accounts of BOK Financial and its subsidiaries, principally BOKF, NA ("the Bank"), BOK Financial Securities, Inc., and BOK Financial Private Wealth, Inc. Operating divisions of the Bank include Bank of Albuquerque, Bank of Oklahoma, Bank of Texas, BOK Financial in Arizona, Arkansas, Colorado and Kansas/Missouri, BOK Financial Mortgage and the TransFund electronic funds network. Certain reclassifications have been made to conform to the current period presentation. The financial information should be read in conjunction with BOK Financial's 2022 Form 10-K filed with the Securities and Exchange Commission, which contains audited financial statements. Amounts presented as of December 31, 2022 have been derived from the audited financial statements included in BOK Financial's 2022 Form 10-K but do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. Operating results for the three-month period ended March 31, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023. Newly Adopted and Pending Accounting Policies Financial Accounting Standards Board ("FASB") FASB Accounting Standards Update No. 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures ("ASU 2022-02") On March 31, 2022, the FASB issued ASU 2022-02 which eliminates the accounting guidance on troubled debt restructurings ("TDRs") for creditors in ASC 310-40, while also no longer requiring an entity to consider renewals, modifications, and extensions that result from reasonably expected TDRs in their calculation of the allowance for credit losses. For receivables for which there has been a modification in their contractual cash flows, ASU 2022-02 requires disclosure, by class of financing receivable, of the types of modifications, the financial effects of those modifications, and the performance of these modified receivables, along with receivables that had a payment default during the current period and had modifications to the contractual cash flows within 12 months prior to the default. Further, ASU 2022-02 requires entities to disclose gross write-offs recorded in the current period by year of origination in the vintage disclosures on a year-to-date basis. ASU 2022-02 was effective for the Company January 1, 2023. Amendments related to TDR recognition and measurement and vintage disclosures were applied prospectively and are included in Note 4 to the consolidated financial statements. Adoption of this standard did not have a material effect on the Company's financial condition or results of operations.

Securities

Securities	3 Months Ended
	Mar. 31, 2023
Marketable Securities [Abstract]
Securities [Text Block]	Securities Trading Securities The fair value and net unrealized gain (loss) included in trading securities are as follows (in thousands): March 31, 2023 December 31, 2022 Fair Value Net Unrealized Gain (Loss) Fair Value Net Unrealized Gain (Loss) U.S. government securities $ 5,618 $ (6) $ 9,823 $ (16) Residential agency mortgage-backed securities 2,210,721 12,289 4,406,848 4 Municipal securities 37,455 45 21,484 (136) Asset-backed securities 10,194 10 — — Other trading securities 30,370 228 26,006 (175) Total trading securities $ 2,294,358 $ 12,566 $ 4,464,161 $ (323) Investment Securities The amortized cost and fair values of investment securities are as follows (in thousands): March 31, 2023 Amortized Carrying Fair Gross Unrealized Cost Value 1 Value Gain Loss Municipal securities $ 153,739 $ 153,739 $ 160,866 $ 7,321 $ (194) Mortgage-backed securities: Residential agency 2,472,291 2,264,922 2,118,538 163 (146,547) Commercial agency 17,259 15,684 14,861 — (823) Other debt securities 14,288 14,288 13,421 — (867) Total investment securities 2,657,577 2,448,633 2,307,686 7,484 (148,431) Allowance for credit losses (497) (497) — — — Investment securities, net of allowance $ 2,657,080 $ 2,448,136 $ 2,307,686 $ 7,484 $ (148,431) 1 Carrying value includes $209 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following. December 31, 2022 Amortized Carrying Fair Gross Unrealized Cost Value 1 Value Gain Loss Municipal securities $ 170,629 $ 170,629 $ 176,621 $ 6,456 $ (464) Mortgage-backed securities: Residential agency 2,538,565 2,315,219 2,143,360 155 (172,014) Commercial agency 17,259 15,609 14,588 — (1,021) Other debt securities 12,788 12,788 12,199 — (589) Total investment securities 2,739,241 2,514,245 2,346,768 6,611 (174,088) Allowance for credit losses (558) (558) — — — Investment securities, net of allowance $ 2,738,683 $ 2,513,687 $ 2,346,768 $ 6,611 $ (174,088) 1 Carrying value includes $225 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following. The amortized cost and fair values of investment securities at March 31, 2023, by contractual maturity, are as shown in the following table (dollars in thousands): Less than One to Six to Over Total Weighted Average Maturity 1 Fixed maturity debt securities: Carrying value $ 24,634 $ 92,723 $ 66,341 $ 13 $ 183,711 3.94 Fair value 24,917 99,241 64,977 13 189,148 Residential mortgage-backed securities: Carrying value $ 2,264,922 2 Fair value 2,118,538 Total investment securities: Carrying value $ 2,448,633 Fair value 2,307,686 1 Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty. 2 The average expected lives of residential mortgage-backed securities were 5.3 years years based upon current prepayment assumptions. Temporarily Impaired Investment Securities (dollars in thousands): March 31, 2023 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Investment: Municipal securities 9 $ — $ — $ 6,594 $ 194 $ 6,594 $ 194 Mortgage-backed securities: Residential agency 116 2,115,733 146,464 1,599 83 2,117,332 146,547 Commercial agency 2 14,861 823 — — 14,861 823 Other debt securities 3 9,153 847 255 20 9,408 867 Total investment securities 130 $ 2,139,747 $ 148,134 $ 8,448 $ 297 $ 2,148,195 $ 148,431 December 31, 2022 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Investment: Municipal securities 22 $ 18,037 $ 406 $ 544 $ 58 $ 18,581 $ 464 Mortgage-backed securities: Residential agency 116 2,142,114 172,014 — — 2,142,114 172,014 Commercial agency 2 14,588 1,021 — — 14,588 1,021 Other debt securities 3 9,428 571 257 18 9,685 589 Total investment securities 143 $ 2,184,167 $ 174,012 $ 801 $ 76 $ 2,184,968 $ 174,088 Available for Sale Securities The amortized cost and fair value of available for sale securities are as follows (in thousands): March 31, 2023 Amortized Fair Gross Unrealized Cost Value Gain Loss U.S. Treasury $ 1,000 $ 914 $ — $ (86) Municipal securities 685,963 634,207 1,338 (53,094) Mortgage-backed securities: Residential agency 6,311,728 6,022,708 15,379 (304,399) Residential non-agency 690,345 651,351 11,271 (50,265) Commercial agency 4,989,813 4,628,188 5,738 (367,363) Other debt securities 500 473 — (27) Total available for sale securities $ 12,679,349 $ 11,937,841 $ 33,726 $ (775,234) December 31, 2022 Amortized Fair Gross Unrealized Cost Value Gain Loss U.S. Treasury $ 1,000 $ 898 $ — $ (102) Municipal securities 687,875 624,500 321 (63,696) Mortgage-backed securities: Residential agency 6,161,358 5,814,496 13,085 (359,947) Residential non-agency 616,423 577,576 11,776 (50,623) Commercial agency 4,892,257 4,475,917 3,479 (419,819) Other debt securities 500 473 — (27) Total available for sale securities $ 12,359,413 $ 11,493,860 $ 28,661 $ (894,214) The amortized cost and fair values of available for sale securities at March 31, 2023, by contractual maturity, are as shown in the following table (dollars in thousands): Less than One to Six to Over Total Weighted Average Maturity 1 Fixed maturity debt securities: Amortized cost $ 148,742 $ 2,665,838 $ 2,360,090 $ 502,606 $ 5,677,276 5.82 Fair value 146,996 2,510,112 2,131,783 474,891 5,263,782 Residential mortgage-backed securities: Amortized cost $ 7,002,073 2 Fair value 6,674,059 Total available for sale securities: Amortized cost $ 12,679,349 Fair value 11,937,841 1 Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty. 2 The average expected lives of residential mortgage-backed securities were 4.4 years years based upon current prepayment assumptions. Sales of available for sale securities resulted in gains and losses as follows (in thousands): Three Months Ended 2023 2022 Proceeds $ — $ 55,185 Gross realized gains — 1,933 Gross realized losses — (996) Related federal and state income tax expense — 219 The fair value of debt securities pledged as collateral for repurchase agreements, public trust funds on deposit and for other purposes, as required by law was $9.9 billion at March 31, 2023 and $11.2 billion at December 31, 2022. The secured parties do not have the right to sell or repledge these securities. Temporarily Impaired Available for Sale Securities (Dollars in thousands) March 31, 2023 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Available for sale: U.S. Treasury 1 $ — $ — $ 914 $ 86 $ 914 $ 86 Municipal securities 215 61,983 767 487,032 52,327 549,015 53,094 Mortgage-backed securities: Residential agency 618 1,531,016 37,020 3,240,193 267,379 4,771,209 304,399 Residential non-agency 30 230,541 8,648 343,580 41,617 574,121 50,265 Commercial agency 288 824,751 14,313 3,413,042 353,050 4,237,793 367,363 Other debt securities 1 — — 473 27 473 27 Total available for sale securities 1,153 $ 2,648,291 $ 60,748 $ 7,485,234 $ 714,486 $ 10,133,525 $ 775,234 December 31, 2022 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Available for sale: U.S. Treasury 1 $ — $ — $ 899 $ 102 $ 899 $ 102 Municipal securities 227 146,634 5,301 428,248 58,395 574,882 63,696 Mortgage-backed securities: Residential agency 613 3,879,582 256,973 863,732 102,974 4,743,314 359,947 Residential non-agency 26 499,716 50,623 — — 499,716 50,623 Commercial agency 285 1,647,778 63,701 2,535,816 356,118 4,183,594 419,819 Other debt securities 1 — — 473 27 473 27 Total available for sale securities 1,153 $ 6,173,710 $ 376,598 $ 3,829,168 $ 517,616 $ 10,002,878 $ 894,214 Based on evaluations of impaired securities as of March 31, 2023, the Company does not intend to sell any impaired available for sale debt securities before fair value recovers to the current amortized cost, and it is more-likely-than-not that the Company will not be required to sell impaired securities before fair value recovers, which may be maturity. Fair Value Option Securities Fair value option securities represent securities which the Company has elected to carry at fair value and are separately identified on the Consolidated Balance Sheets. Changes in the fair value are recognized in earnings as they occur. Certain securities are held as an economic hedge of the mortgage servicing rights. The fair value and net unrealized gain (loss) included in fair value option securities is as follows (in thousands): March 31, 2023 December 31, 2022 Fair Value Net Unrealized Gain (Loss) Fair Value Net Unrealized Gain (Loss) U.S. Treasury $ 106,307 $ 359 $ — $ — Residential agency mortgage-backed securities 220,083 250 296,590 338 Total $ 326,390 $ 609 $ 296,590 $ 338

Derivatives

Derivatives	3 Months Ended
	Mar. 31, 2023
Derivative Instrument Detail [Abstract]
Derivatives [Text Block]	Derivatives Derivative instruments may be used by the Company as part of its internal risk management programs or may be offered to customers. All derivative instruments are carried at fair value, and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customer or other counterparties reduce the fair value of asset contracts. Deterioration of our credit rating could decrease the fair value of our derivative liabilities. When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis. Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral in the event of default is reasonably assured. None of these derivative contracts have been designated as hedging instruments for accounting purposes. Customer Risk Management Programs BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, interest rates and foreign exchange rates with derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize the risk of changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to customer contracts, except for a fixed pricing spread or fee paid to BOK Financial as profit and compensation for administrative costs and credit risk which is recognized over the life of the contracts and included in Other operating revenue – Brokerage and trading revenue in the Consolidated Statements of Earnings. Trading BOK Financial may offer derivative instruments such as to-be-announced securities to mortgage banking customers to enable them to manage their market risk or to mitigate the Company's market risk of holding trading securities. Changes in the fair value of derivative instruments for trading purposes or used to mitigate the market risk of holding trading securities are included in Other operating revenue – Brokerage and trading revenue. Internal Risk Management Programs BOK Financial may use derivative contracts in managing its interest rate sensitivity, as part of its economic hedge of the change in the fair value of mortgage servicing rights. Changes in the fair value of derivative instruments used in managing interest rate sensitivity and as part of the economic hedge of changes in the fair value of mortgage servicing rights are included in Other operating revenue – Gain (loss) on derivatives, net in the Consolidated Statements of Earnings. As discussed in Note 5, certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 5 for additional discussion of notional, fair value and impact on earnings of these contracts. The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at March 31, 2023 (in thousands): Assets Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,691,550 $ 121,481 $ (3,303) $ 118,178 $ (98,143) $ 20,035 Energy contracts 7,456,604 988,149 (592,276) 395,873 (121,612) 274,261 Foreign exchange contracts 59,321 57,431 — 57,431 (1,560) 55,871 Equity option contracts 12,286 116 — 116 (95) 21 Total customer risk management programs 10,219,761 1,167,177 (595,579) 571,598 (221,410) 350,188 Trading 14,507,221 87,395 (45,420) 41,975 (1,439) 40,536 Internal risk management programs 165,207 5,253 (1,686) 3,567 — 3,567 Total derivative contracts $ 24,892,189 $ 1,259,825 $ (642,685) $ 617,140 $ (222,849) $ 394,291 Liabilities Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,691,550 $ 121,040 $ (3,303) $ 117,737 $ — $ 117,737 Energy contracts 7,564,737 997,077 (592,276) 404,801 (80,146) 324,655 Foreign exchange contracts 57,909 55,828 — 55,828 — 55,828 Equity option contracts 12,286 116 — 116 — 116 Total customer risk management programs 10,326,482 1,174,061 (595,579) 578,482 (80,146) 498,336 Trading 16,042,176 116,109 (45,420) 70,689 (59,941) 10,748 Internal risk management programs 135,415 3,085 (1,686) 1,399 — 1,399 Total derivative contracts $ 26,504,073 $ 1,293,255 $ (642,685) $ 650,570 $ (140,087) $ 510,483 1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract. The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at December 31, 2022 (in thousands): Assets Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,629,318 $ 158,825 $ — $ 158,825 $ (114,955) $ 43,870 Energy contracts 7,918,020 1,232,283 (594,543) 637,740 (67,024) 570,716 Foreign exchange contracts 219,791 216,569 — 216,569 — 216,569 Equity option contracts 21,102 193 — 193 (109) 84 Total customer risk management programs 10,788,231 1,607,870 (594,543) 1,013,327 (182,088) 831,239 Trading 17,400,037 126,910 (74,647) 52,263 (4,646) 47,617 Internal risk management programs 85,000 1,500 (13) 1,487 — 1,487 Total derivative contracts $ 28,273,268 $ 1,736,280 $ (669,203) $ 1,067,077 $ (186,734) $ 880,343 Liabilities Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,629,122 $ 158,816 $ — $ 158,816 $ — $ 158,816 Energy contracts 8,696,060 1,242,058 (594,543) 647,515 (484,319) 163,196 Foreign exchange contracts 214,855 211,233 — 211,233 (7) 211,226 Equity option contracts 21,102 193 — 193 — 193 Total customer risk management programs 11,561,139 1,612,300 (594,543) 1,017,757 (484,326) 533,431 Trading 14,038,906 94,958 (74,647) 20,311 (423) 19,888 Internal risk management programs 178,806 1,594 (13) 1,581 — 1,581 Total derivative contracts $ 25,778,851 $ 1,708,852 $ (669,203) $ 1,039,649 $ (484,749) $ 554,900 1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract. The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands): Three Months Ended March 31, 2023 March 31, 2022 Brokerage Gain (Loss) on Derivatives, Net Brokerage Gain (Loss) on Derivatives, Net Customer risk management programs: Interest rate contracts $ 1,770 $ — $ 6,342 $ — Energy contracts 6,553 — 4,449 — Foreign exchange contracts 31 — 148 — Equity option contracts — — — — Total customer risk management programs 8,354 — 10,939 — Trading 1 (63,093) — 31,074 — Internal risk management programs — (1,344) — (46,981) Total derivative contracts $ (54,739) $ (1,344) $ 42,013 $ (46,981) 1 Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.

Loans and Allowances for Credit

Loans and Allowances for Credit Losses	3 Months Ended
	Mar. 31, 2023
Loans and Leases Receivable, Net Amount [Abstract]
Loans [Text Block]	Loans Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower's difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential mortgage loans guaranteed by U.S. government agencies, are as follows. Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when more than 90 days past due or within 60 days of being notified of the borrower's bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Accrued but not paid interest receivable is included in Receivables in the Consolidated Balance Sheets. Payments on nonaccruing loans are applied to principal or recognized as interest income, according to management's judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower's financial condition or a sustained period of performance. For loans acquired with no evidence of credit deterioration, discounts are accreted on either an individual basis for loans with unique characteristics or on a pool basis for groups of homogeneous loans. Accretion is discontinued when a loan with an individually attributed discount is placed on nonaccruing status. Modifications of loans to existing borrowers generally consist of interest rate reductions, extension of payment terms, or a combination of these. Modifications may arise either voluntarily through negotiations with the borrower or involuntarily through court order. Payment deferrals up to six months are generally considered to be short-term modifications. Generally, principal and accrued but unpaid interest is not voluntarily forgiven. A change to the allowance for credit losses is generally not recorded upon modification because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance methodology. Performing loans may be renewed under the current collateral value, debt service ratio and other underwriting standards. Nonaccruing loans may be renewed and will remain classified as nonaccruing. Occasionally, loans, other than residential mortgage loans, may be held for sale in order to manage credit concentration. These loans are carried at the lower of cost or fair value with gains or losses recognized in Other gains (losses), net in the Consolidated Statements of Earnings. All loans are charged off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a modification. The charge-off amount is determined through a quarterly evaluation of available cash resources and collateral values. Internally risk graded loans are evaluated quarterly, and charge-offs are taken in the quarter in which the loss is identified. Non-risk graded loans that are past due between 60 days and 180 days, based on the loan product type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status. Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable. Amortization does not anticipate loan prepayments. Net unamortized fees are recognized in full at time of payoff. Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company may have the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheets. We do not expect to receive all principal and interest based on the loan's contractual terms. A portion of the principal balance continues to be guaranteed; however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of the expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in accordance with U.S. government agency guidelines. Interest continues to accrue based on the modified rate. Guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors. Loans are disaggregated into portfolio segments and further disaggregated into classes. The portfolio segment is the level at which the Company develops and documents a systematic method for determining its allowance for credit losses. Classes are a further disaggregation of portfolio segments based on the risk characteristics of the loans and the Company's method for monitoring and assessing credit risk. Portfolio segments of the loan portfolio are as follows (in thousands): March 31, 2023 December 31, 2022 Fixed Variable Non-accrual Total Fixed Variable Non-accrual Total Commercial $ 3,427,345 $ 10,735,572 $ 54,432 $ 14,217,349 $ 3,392,422 $ 10,759,780 $ 60,297 $ 14,212,499 Commercial real estate 879,806 3,913,842 21,668 4,815,316 874,716 3,715,491 16,570 4,606,777 Loans to individuals 2,125,020 1,548,173 44,195 3,717,388 2,099,165 1,593,779 44,930 3,737,874 Total $ 6,432,171 $ 16,197,587 $ 120,295 $ 22,750,053 $ 6,366,303 $ 16,069,050 $ 121,797 $ 22,557,150 Credit Commitments Commitments to extend credit are agreements to lend to a customer as long as there is no violation of conditions established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. At March 31, 2023, outstanding commitments totaled $15.1 billion. Because some commitments are expected to expire before being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. BOK Financial uses the same credit policies in making commitments as it does loans. The amount of collateral obtained, if deemed necessary, is based upon management's credit evaluation of the borrower. Standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Because the credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loan commitments, BOK Financial uses the same credit policies in evaluating the creditworthiness of the customer. Additionally, BOK Financial uses the same evaluation process in obtaining collateral on standby letters of credit as it does for loan commitments. The term of these standby letters of credit is defined in each commitment and typically corresponds with the underlying loan commitment. At March 31, 2023, outstanding standby letters of credit totaled $790 million. Allowances for Credit Losses and Accrual for Off-balance Sheet Credit Risk from Unfunded Loans Commitments The allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments represent the portion of the amortized cost basis of loans that we do not expect to collect over the asset's contractual life, considering past events, current conditions, and reasonable and supportable forecasts of future economic conditions. The appropriateness of the allowance for credit losses, including industry and product adjustments, is assessed quarterly by a senior management Allowance Committee. This review is based on an on-going evaluation of the estimated expected credit losses in the portfolio and on unused commitments to provide financing. A well-documented methodology has been developed and is applied by an independent Credit Administration department to assure consistency across the Company. The allowance for loan losses consists of specific allowances attributed to certain individual loans, generally nonaccruing loans, with dissimilar risk characteristics that have not yet been charged down to amounts we expect to recover and general allowances for estimated credit losses on pools of loans that share similar risk characteristics. When full collection of principal or interest is uncertain, the loan's risk characteristics have changed, and we exclude the loan from the general allowance pool, typically designating it as nonaccruing. For these loans, a specific allowance reflects the expected credit loss. We measure specific allowances for loans excluded from the general allowance pool by an evaluation of estimated future cash flows discounted at the loan's initial effective interest rate or the fair value of collateral for certain collateral dependent loans. For a non-collateral dependent loan, the specific allowance is the amount by which the loan's amortized cost basis exceeds its net realizable value. We measure the specific allowance for collateral dependent loans as the amount by which the loan's amortized cost basis exceeds its fair value. When repayment is expected to be provided substantially through the sale of collateral, we deduct estimated selling costs from the collateral's fair value. Generally, for real property held as collateral for loans, third party appraisals that conform to Uniform Standards of Professional Appraisal Practice serve as the basis for the fair value of real property held as collateral. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. For energy loans, our internal staff of engineers generally determines collateral value of mineral rights based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. For real property held as collateral for other loans, third party appraisals that conform to Uniform Standards of Professional Appraisal Practice generally serve as the basis for the fair value. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. Our special assets staff generally determines the value of other collateral based on projected liquidation cash flows under current market conditions. We evaluate collateral values and available cash resources quarterly. Historical statistics may be used to estimate specific allowances in limited situations, such as when a collateral dependent loan is removed from the general allowance pool near the end of a reporting period until an appraisal of collateral value is received or a full assessment of future cash flows is completed. General allowances estimate expected credit losses on pools of loans sharing similar risk characteristics that are expected to occur over the loan's estimated remaining life. The loan's estimated remaining life represents the contractual term adjusted for amortization, estimates of prepayments, and borrower-owned extension options. Approximately 90 percent of the committed dollars in the loan portfolio is risk graded loans with general allowance model inputs that include probability of default, loss given default, and exposure at default. Probability of default is based on the migration of loans from performing to nonperforming using historical life of loan analysis periods. Loss given default is based on the aggregate losses incurred, net of estimated recoveries. Exposure at default represents an estimate of the outstanding amount of credit exposure at the time a default may occur. Charge-off migration is used to calculate the general allowance for the majority of non-risk graded loans to individuals. The expected credit loss on less than 10 percent of the committed dollars in the portfolio is calculated using charge-off migration. The expected credit loss on approximately 1 percent of the committed dollars in the portfolio is calculated using a non-modeled approach. Specifically, the calculation applies a long-term net charge-off rate to the loan balances, adjusted for the weighted average remaining maturity of each portfolio. In estimating the expected credit losses for general allowances on performing risk-graded loans, each portfolio class is assigned relevant economic loss drivers which best explain variations in portfolio net loss rates. The probability of default estimates for each portfolio class are adjusted for current and forecasted economic conditions. The result is applied to the exposure at default and loss given default to calculate the lifetime expected credit loss estimate. Selection of relevant economic loss drivers is re-evaluated periodically and involves statistical analysis as well as management judgment. The unemployment rate factors significantly in the allowance for loan losses calculation, affecting commercial and loans to individuals segments. Other primary factors impacting the commercial portfolio include BBB corporate spreads, real gross domestic product growth rate, and energy commodity prices. The primary commercial real estate variables are vacancy rate and BBB corporate spreads. In addition to the unemployment rate, the forecast for loans to individuals is tied to a home price index. The forecasts may include regional economic factors when localized conditions diverge from national conditions. An Economic Forecast Committee, consisting of senior management with members largely independent of the allowance process develops a twelve-month forward-looking forecast for the relevant economic loss drivers. Management develops these forecasts based on external data as well as a view of future economic conditions which may include adjustments for regional conditions. The forecast includes three economic scenarios and probability weights for each scenario. The base forecast represents management's view of the most likely outcome, while the downside forecast reflects reasonably possible worsening economic conditions, and the upside forecast projects reasonably possible improving conditions. At the end of the one-year reasonable and supportable forecast period, we transition from shorter-term expected losses to long-term loss averages for the loan's estimated remaining life. The difference between short-term loss forecasts and long-term loss averages is run-off over the reversion horizon, up to three years, depending on the forecasted economic scenarios. General allowances also consider the estimated impact of factors that are not captured in the modeled results or historical experience. These factors may increase or decrease modeled results by amounts determined by the Allowance Committee. Factors not captured in modeled results or historical experience may include for example, new lines of business, market conditions that have not been previously encountered, observed changes in credit risk that are not yet reflected in macro-economic factors, or economic conditions that impact loss given default assumptions. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit or guarantees that are not unconditionally cancelable by the bank. This accrual is included in other liabilities in the Consolidated Balance Sheets. The appropriateness of the accrual is determined in the same manner as the allowance for loan losses, with the added consideration of commitment usage over the remaining life for those loans that the bank can not unconditionally cancel. A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain an appropriate Allowance for Credit Losses. Recoveries of loans previously charged off are added to the allowance when received. The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands): Three Months Ended March 31, 2023 Commercial Commercial Real Estate Loans to Individuals Total Allowance for loan losses: Beginning balance $ 131,586 $ 57,648 $ 46,470 $ 235,704 Provision for loan losses 6,330 10,426 (2,231) 14,525 Loans charged off (12) (2,208) (1,447) (3,667) Recoveries of loans previously charged off 1,994 137 767 2,898 Ending balance $ 139,898 $ 66,003 $ 43,559 $ 249,460 Allowance for off-balance sheet credit risk from unfunded loan commitments: Beginning balance $ 18,246 $ 40,490 $ 2,183 $ 60,919 Provision for off-balance sheet credit risk 2,362 (279) (59) 2,024 Ending balance $ 20,608 $ 40,211 $ 2,124 $ 62,943 Three Months Ended March 31, 2022 Commercial Commercial Real Estate Loans to Individuals Total Allowance for loan losses: Beginning balance $ 162,056 $ 58,553 $ 35,812 $ 256,421 Provision for loan losses (5,118) 468 683 (3,967) Loans charged off (6,081) (191) (1,533) (7,805) Recoveries of loans previously charged off 591 144 1,089 1,824 Ending balance $ 151,448 $ 58,974 $ 36,051 $ 246,473 Allowance for off-balance sheet credit risk from unfunded loan commitments: Beginning balance $ 13,812 $ 17,442 $ 1,723 $ 32,977 Provision for off-balance sheet credit risk 154 3,023 91 3,268 Ending balance $ 13,966 $ 20,465 $ 1,814 $ 36,245 A $16.0 million provision for credit losses was necessary for the first quarter of 2023, as key economic assumptions in the base case, including projected WTI oil prices and commercial real estate vacancy rates, were less favorable to economic growth. The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at March 31, 2023 is as follows (in thousands): Collectively Measured Individually Measured Total Recorded Investment Related Allowance Recorded Investment Related Allowance Recorded Investment Related Commercial $ 14,162,917 $ 137,415 $ 54,432 $ 2,483 $ 14,217,349 $ 139,898 Commercial real estate 4,793,648 64,453 21,668 1,550 4,815,316 66,003 Loans to individuals 3,673,193 43,559 44,195 — 3,717,388 43,559 Total $ 22,629,758 $ 245,427 $ 120,295 $ 4,033 $ 22,750,053 $ 249,460 The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2022 is as follows (in thousands): Collectively Measured Individually Measured Total Recorded Investment Related Allowance Recorded Investment Related Allowance Recorded Investment Related Commercial $ 14,152,202 $ 127,566 $ 60,297 $ 4,020 $ 14,212,499 $ 131,586 Commercial real estate 4,590,207 56,098 16,570 1,550 4,606,777 57,648 Loans to individuals 3,692,944 46,470 44,930 — 3,737,874 46,470 Total $ 22,435,353 $ 230,134 $ 121,797 $ 5,570 $ 22,557,150 $ 235,704 Credit Quality Indicators The Company utilizes risk grading as primary credit quality indicators as it influences the probability of default which is a key attribute in the expected credit losses calculation. Substantially all commercial as well as commercial real estate loans and certain loans to individuals are risk graded based on a quarterly evaluation of the borrowers' ability to repay the loans. Certain commercial loans and most loans to individuals are small, homogeneous pools that are not risk-graded. The credit quality of these loans is based on past due days in accordance with regulatory guidelines. We have included in the credit quality indicator "pass" loans that are in compliance with the original terms of the agreement and currently exhibit no factors that cause management to have doubts about the borrowers' ability to remain in compliance with the original terms of the agreement, which is consistent with the regulatory guideline of "pass". This also includes past due residential mortgages that are guaranteed by agencies of the U.S. government that continue to accrue interest based on criteria of the guarantors' programs. Other loans especially mentioned ("Special Mention") are currently performing in compliance with the original terms of the agreement but may have a potential weakness that deserves management's close attention, consistent with regulatory guidelines. Non-graded loans 30 to 59 days past due are categorized as Special Mention. The risk grading process identifies certain loans that have a well-defined weakness (for example, inadequate debt service coverage or liquidity or marginal capitalization; repayment may depend on collateral or other risk mitigation) that may jeopardize liquidation of the debt and represent a greater risk due to deterioration in the financial condition of the borrower. This is consistent with the regulatory guideline for "substandard". Because the borrowers are still performing in accordance with the original terms of the loan agreements, these loans remain on accruing status. Non-graded loans 60 to 89 days past due are categorized as Accruing Substandard. Nonaccruing loans represent loans for which full collection of principal and interest is uncertain. This includes certain loans considered "substandard" and all loans considered "doubtful" by regulatory guidelines. Non-graded loans 90 or more days past due are categorized as Nonaccrual. Probability of default is lowest for pass graded loans and increases for each credit quality indicator, Special Mention, and Accruing Substandard. Vintage represents the year of origination, except for revolving loans which are considered in aggregate. Loans that were once revolving but have converted to term loans without additional underwriting appear in a separate vintage column. The following table summarizes the Company’s loan portfolio at March 31, 2023 by the risk grade categories and vintage (in thousands): Origination Year 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial: Energy Pass $ 12,973 $ 146,448 $ 66,052 $ 8,865 $ 11,301 $ 11,408 $ 3,119,103 $ — $ 3,376,150 Accruing Substandard — — — — 658 1,060 20,062 — 21,780 Nonaccrual — — — — — 127 — — 127 Total energy 12,973 146,448 66,052 8,865 11,959 12,595 3,139,165 — 3,398,057 Loans charged-off, year-to-date — — — — — — — — — Healthcare Pass 175,703 876,440 615,643 479,575 386,837 1,027,229 220,992 19 3,782,438 Special Mention — — 204 429 21,767 45,663 60 — 68,123 Accruing Substandard — — — 2,178 1,456 7,899 — — 11,533 Nonaccrual — — — — 26,137 11,110 — — 37,247 Total healthcare 175,703 876,440 615,847 482,182 436,197 1,091,901 221,052 19 3,899,341 Loans charged-off, year-to-date — — — — — — — — — Services Pass 216,237 759,320 470,813 275,065 171,904 805,240 799,522 506 3,498,607 Special Mention — 19,077 1,365 219 672 2,521 6,246 — 30,100 Accruing Substandard — 397 86 — 2,232 2,599 21,499 84 26,897 Nonaccrual — — 5,281 376 — — 2,441 — 8,098 Total services 216,237 778,794 477,545 275,660 174,808 810,360 829,708 590 3,563,702 Loans charged-off, year-to-date — — — — — — 5 — 5 General business Pass 288,367 607,548 320,451 162,810 147,988 355,227 1,336,404 2,193 3,220,988 Special Mention — 7,515 8,200 87 70 1,762 31,903 25 49,562 Accruing Substandard 5,516 38,443 6,841 56 4,013 7,940 13,929 — 76,738 Nonaccrual — — — 1,030 14 68 7,842 7 8,961 Total general business 293,883 653,506 335,492 163,983 152,085 364,997 1,390,078 2,225 3,356,249 Loans charged-off, year-to-date — — — — — 3 — 4 7 Total commercial 698,796 2,455,188 1,494,936 930,690 775,049 2,279,853 5,580,003 2,834 14,217,349 Origination Year 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial real estate: Pass 46,900 1,383,300 1,187,644 540,129 644,511 832,101 148,063 — 4,782,648 Special Mention — — — — — 11,000 — — 11,000 Nonaccrual — — — — 7,459 14,209 — — 21,668 Total commercial real estate 46,900 1,383,300 1,187,644 540,129 651,970 857,310 148,063 — 4,815,316 Loans charged-off, year-to-date — — — — — 2,208 — — 2,208 Loans to individuals: Residential mortgage Pass 71,000 348,697 371,044 380,908 61,409 285,877 351,428 21,242 1,891,605 Special Mention — 68 — 1,355 — 309 2,843 — 4,575 Accruing Substandard — — — — — 7 147 — 154 Nonaccrual — 1,184 1,738 2,851 649 20,547 1,994 730 29,693 Total residential mortgage 71,000 349,949 372,782 385,114 62,058 306,740 356,412 21,972 1,926,027 Loans charged-off, year-to-date — — — — — 4 — 1 5 Residential mortgage guaranteed by U.S. government agencies Pass — 1,021 2,321 7,321 8,963 190,825 — — 210,451 Nonaccrual — — — 299 1,005 12,998 — — 14,302 Total residential mortgage guaranteed by U.S. government agencies — 1,021 2,321 7,620 9,968 203,823 — — 224,753 Personal: Pass 24,231 236,041 190,370 156,515 181,332 220,604 550,478 253 1,559,824 Special Mention — 115 109 47 2 — 6,055 39 6,367 Accruing Substandard — 17 40 — 160 — — — 217 Nonaccrual — 69 5 10 19 19 78 — 200 Total personal 24,231 236,242 190,524 156,572 181,513 220,623 556,611 292 1,566,608 Loans charged-off, year-to-date — — — — — 1,437 1 4 1,442 Total loans to individuals 95,231 587,212 565,627 549,306 253,539 731,186 913,023 22,264 3,717,388 Total loans $ 840,927 $ 4,425,700 $ 3,248,207 $ 2,020,125 $ 1,680,558 $ 3,868,349 $ 6,641,089 $ 25,098 $ 22,750,053 The following table summarizes the Company's loan portfolio at December 31, 2022 by the risk grade categories and vintage (in thousands): Origination Year 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial: Energy Pass $ 157,745 $ 76,951 $ 30,284 $ 12,783 $ 5,992 $ 4,980 $ 3,104,906 $ — $ 3,393,641 Special Mention — — — — — — — — — Accruing Substandard — — — 664 385 683 28,018 — 29,750 Nonaccrual — — — — — 159 1,240 — 1,399 Total energy 157,745 76,951 30,284 13,447 6,377 5,822 3,134,164 — 3,424,790 Healthcare Pass 932,097 604,886 476,854 404,204 464,989 618,163 245,898 20 3,747,111 Special Mention — — — 20,071 — 18,859 4 — 38,934 Accruing Substandard — — — — — 14,304 3,634 — 17,938 Nonaccrual — — — 26,480 6,373 8,181 — — 41,034 Total healthcare 932,097 604,886 476,854 450,755 471,362 659,507 249,536 20 3,845,017 Services Pass 821,785 496,510 286,085 193,481 156,736 696,300 722,371 639 3,373,907 Special Mention 502 5,139 989 771 894 1,345 8,668 — 18,308 Accruing Substandard — — — 2,459 43 2,789 17,665 122 23,078 Nonaccrual — 5,570 449 — — 2,389 7,820 — 16,228 Total services 822,287 507,219 287,523 196,711 157,673 702,823 756,524 761 3,431,521 General business Pass 725,894 361,839 198,274 172,878 139,140 283,694 1,570,536 2,329 3,454,584 Special Mention 17,759 13,065 208 71 7 2,291 7,094 26 40,521 Accruing Substandard — 2,169 66 4,130 4,680 3,287 94 4 14,430 Nonaccrual — — 1,052 14 72 5 485 8 1,636 Total general business 743,653 377,073 199,600 177,093 143,899 289,277 1,578,209 2,367 3,511,171 Total commercial 2,655,782 1,566,129 994,261 838,006 779,311 1,657,429 5,718,433 3,148 14,212,499 Commercial real estate: Pass 1,188,483 1,158,002 552,616 641,102 247,625 633,304 161,616 — 4,582,748 Special Mention — — — — — — — — — Accruing Substandard — — — 7,459 — — — — 7,459 Nonaccrual — — — — — 16,570 — — 16,570 Total commercial real estate 1,188,483 1,158,002 552,616 648,561 247,625 649,874 161,616 — 4,606,777 Origination Year 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Loans to individuals: Residential mortgage Pass 354,497 373,190 393,002 63,142 40,525 260,625 352,126 22,176 1,859,283 Special Mention — 81 42 — 142 388 527 87 1,267 Accruing Substandard — — 187 — — 138 117 1 443 Nonaccrual 32 1,656 2,717 362 1,904 20,139 2,216 765 29,791 Total residential mortgage 354,529 374,927 395,948 63,504 42,571 281,290 354,986 23,029 1,890,784 Residential mortgage guaranteed by U.S. government agencies Pass 289 2,254 9,000 10,722 17,244 191,426 — — 230,935 Nonaccrual — — 299 1,460 2,319 10,927 — — 15,005 Total residential mortgage guaranteed by U.S. government agencies 289 2,254 9,299 12,182 19,563 202,353 — — 245,940 Personal: Pass 254,497 193,095 154,887 172,114 68,871 201,278 549,187 332 1,594,261 Special Mention 47 28 40 12 17 — 6,003 4 6,151 Accruing Substandard — 444 — 160 — — — — 604 Nonaccrual 38 7 12 22 14 18 23 — 134 Total personal 254,582 193,574 154,939 172,308 68,902 201,296 555,213 336 1,601,150 Total loans to individuals 609,400 570,755 560,186 247,994 131,036 684,939 910,199 23,365 3,737,874 Total loans $ 4,453,665 $ 3,294,886 $ 2,107,063 $ 1,734,561 $ 1,157,972 $ 2,992,242 $ 6,790,248 $ 26,513 $ 22,557,150 Nonaccruing Loans A summary of nonaccruing loans at March 31, 2023 follows (in thousands): As of March 31, 2023 Total With No With Allowance Related Allowance Commercial: Energy $ 127 $ 127 $ — $ — Healthcare 37,247 37,247 — — Services 8,097 387 7,710 2,483 General business 8,961 8,961 — — Total commercial 54,432 46,722 7,710 2,483 Commercial real estate 21,668 7,628 14,040 1,550 Loans to individuals: Residential mortgage 29,693 29,693 — — Residential mortgage guaranteed by U.S. government agencies 14,302 14,302 — — Personal 200 200 — — Total loans to individuals 44,195 44,195 — — Total $ 120,295 $ 98,545 $ 21,750 $ 4,033 A summary of nonaccruing loans at December 31, 2022 follows (in thousands): As of December 31, 2022 Total With No With Allowance Related Allowance Commercial: Energy $ 1,399 $ 1,399 $ — $ — Healthcare 41,034 34,661 6,373 946 Services 16,228 7,835 8,393 3,074 General business 1,636 1,636 — — Total commercial 60,297 45,531 14,766 4,020 Commercial real estate 16,570 393 16,177 1,550 Loans to individuals: Residential mortgage 29,791 29,791 — — Residential mortgage guaranteed by U.S. government agencies 15,005 15,005 — — Personal 134 134 — — Total loans to individuals 44,930 44,930 — — Total $ 121,797 $ 90,854 $ 30,943 $ 5,570 Loan Modifications to Borrowers Experiencing Financial Difficulty At March 31, 2023 the Company had $35 million of loan modifications to borrowers experiencing financial difficulty, including $26 million of healthcare loans and $8.4 million of residential mortgage loans guaranteed by U.S. government agencies. Modifications generally consist of interest rate reductions, an other than insignificant payment delay, term extension or a combination. During the three months ended March 31, 2023, $511 thousand of residential mortgage loans guaranteed by U.S. government agencies were modified and subsequently defaulted. A payment default is defined as being 30 or more days past due after modification. Past Due Loans Past due status for all loan classes is based on the actual number of days since the last payment was due according to the contractual terms of the loans, as modified for short-term payment deferral forbearance. A summary of loans currently performing and past due as of March 31, 2023 is as follows (in thousands): Past Due Past Due 90 Days or More and Accruing Current 30 to 59 60 to 89 Days 90 Days Total Commercial: Energy $ 3,398,057 $ — $ — $ — $ 3,398,057 $ — Healthcare 3,866,921 — — 32,420 3,899,341 45 Services 3,556,753 6,844 45 60 3,563,702 — General business 3,355,731 492 17 9 3,356,249 9 Total commercial 14,177,462 7,336 62 32,489 14,217,349 54 Commercial real estate 4,806,306 8,965 45 — 4,815,316 — Loans to individuals: Residential mortgage 1,910,799 8,315 363 6,550 1,926,027 22 Residential mortgage guaranteed by U.S. government agencies 103,992 48,833 — 71,928 224,753 64,980 Personal 1,565,875 567 143 23 1,566,608 — Total loans to individuals 3,580,666 57,715 506 78,501 3,717,388 65,002 Total $ 22,564,434 $ 74,016 $ 613 $ 110,990 $ 22,750,053 $ 65,056 A summary of loans currently performing and past due as of December 31, 2022 is as follows (in thousands): Past Due Past Due 90 Days

Mortgage Banking Activities

Mortgage Banking Activities	3 Months Ended
	Mar. 31, 2023
Mortgage Banking [Abstract]
Mortgage Banking Activities [Text Block]	Mortgage Banking Activities Residential Mortgage Loan Production The Company originates, markets and services conventional and government-sponsored residential mortgage loans. Generally, conforming fixed rate residential mortgage loans are held for sale in the secondary market, and non-conforming and adjustable-rate residential mortgage loans are retained for investment. Residential mortgage loans originated for sale by the Company are carried at fair value based on sales commitments and market quotes. Changes in the fair value of mortgage loans held for sale are included in Other operating revenue – Mortgage banking revenue. Residential mortgage loans held for sale also includes the fair value of residential mortgage loan commitments and forward sales commitments, which are considered derivative contracts that have not been designated as hedging instruments for accounting purposes. The volume of mortgage loans originated for sale and secondary market prices are the primary drivers of originating and marketing revenue. Residential mortgage loan commitments are generally outstanding for 60 to 90 days, which represents the typical period from commitment to originate a residential mortgage loan to when the closed loan is sold to an investor. Residential mortgage loan commitments are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales of residential mortgage-backed securities and forward sales contracts. These latter contracts set the price for loans that will be delivered in the next 60 to 90 days. The unpaid principal balance of residential mortgage loans held for sale, notional amounts of derivative contracts related to residential mortgage loan commitments and forward contract sales and their related fair values included in Mortgage loans held for sale on the Consolidated Balance Sheets were (in thousands): March 31, 2023 December 31, 2022 Unpaid Principal Balance/ Fair Value Unpaid Principal Balance/ Fair Value Residential mortgage loans held for sale $ 72,746 $ 72,113 $ 74,941 $ 73,938 Residential mortgage loan commitments 71,693 2,694 45,492 1,054 Forward sales contracts 127,427 (632) 109,469 280 $ 74,175 $ 75,272 No residential mortgage loans held for sale were 90 days or more past due or considered impaired as of March 31, 2023 or December 31, 2022. No credit losses were recognized on residential mortgage loans held for sale for the three month period ended March 31, 2023 and 2022. Mortgage banking revenue was as follows (in thousands): Three Months Ended 2023 2022 Production revenue: Net realized gains (losses) on sale of mortgage loans $ (1,731) $ 6,883 Net change in unrealized gain (loss) on mortgage loans held for sale 370 (5,827) Net change in the fair value of mortgage loan commitments 1,640 (3,298) Net change in the fair value of forward sales contracts (912) 7,297 Total production revenue (633) 5,055 Servicing revenue 15,000 11,595 Total mortgage banking revenue $ 14,367 $ 16,650 Production revenue includes gain (loss) on residential mortgage loans held for sale and changes in the fair value of derivative contracts not designated as hedging instruments for accounting purposes related to residential mortgage loan commitments and forward sales contracts. Servicing revenue includes servicing fee income and late charges on loans serviced for others. Residential Mortgage Servicing Mortgage servicing rights may be originated or purchased. Both originated and purchased mortgage servicing rights are initially recognized at fair value. The Company has elected to carry all mortgage servicing rights at fair value. Changes in the fair value are recognized in earnings as they occur. The unpaid principal balance of loans serviced for others is the primary driver of servicing revenue. The following represents a summary of mortgage servicing rights (dollars in thousands): March 31, 2023 December 31, 2022 Number of residential mortgage loans serviced for others 118,303 110,541 Outstanding principal balance of residential mortgage loans serviced for others $ 21,009,762 $ 18,863,201 Weighted average interest rate 3.55 % 3.59 % Remaining term (in months) 285 283 The following represents activity in capitalized mortgage servicing rights (in thousands) Three Months Ended March 31, 2023 2022 Beginning Balance $ 277,608 $ 163,198 Additions 2,500 5,215 Acquisitions 31,138 — Change in fair value due to principal payments (5,384) (7,960) Change in fair value due to market assumption changes (6,059) 49,110 Ending Balance $ 299,803 $ 209,563 Changes in the fair value of mortgage servicing rights due to market assumption changes are included in Other operating revenue in the Consolidated Statements of Earnings. Changes in fair value due to principal payments are included in Mortgage banking costs. Mortgage servicing rights are not traded in active markets. Fair value is determined by discounting the projected net cash flows. Significant market assumptions used to determine fair value based on significant unobservable inputs were as follows: March 31, 2023 December 31, 2022 Discount rate – risk-free rate plus a market premium 8.95% 9.51% Prepayment rate - based upon loan interest rate, original term and loan type 7.43% 7.54% Loan servicing costs – annually per loan based upon loan type: Performing loans $69 - $94 $69 - $94 Delinquent loans $150 - $500 $150 - $500 Loans in foreclosure $875 - $8,000 $875 - $8,000 Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life 3.66% 4.06% Primary/secondary mortgage rate spread 105 bps 105 bps Delinquency rate 1.40% 2.33% Changes in primary residential mortgage interest rates directly affect the prepayment speeds used in valuing our mortgage servicing rights. A separate third party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. The prepayment model is updated periodically for changes in market conditions and adjusted to better correlate with actual performance of BOK Financia's servicing portfolio.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities [Text Block]	Commitments and Contingent Liabilities Litigation Contingencies On June 24, 2015, BOKF, NA received a complaint that an employee had colluded with a bond issuer and an individual in misusing revenues pledged to municipal bonds for which BOKF, NA served as trustee under the bond indenture. The Company conducted an investigation and concluded that employees in one of its Corporate Trust offices had, with respect to a single group of affiliated bond issuances, violated Company policies and procedures. The relationship manager was terminated. The Company reported the circumstances to, and cooperated with an investigation by, the Securities and Exchange Commission ("SEC"). On September 7, 2016, BOKF, NA agreed to, and the SEC entered, a consent order finding that BOKF, NA had violated Section 17(a) of the Securities Act of 1933 and Section 10(b) of the Securities Exchange Act and required BOKF, NA to disgorge $1,067,721 of fees and pay a civil penalty of $600,000. BOKF, NA disgorged the fees and paid the penalty. On August 26, 2016, BOKF, NA was sued in the United States District Court for New Jersey by two bondholders in a putative class action alleging BOKF, NA participated in the fraudulent sale of securities by the principals. The action remains stayed with no current deadlines pending. On September 14, 2016, BOKF, NA was sued in the District Court of Tulsa County, Oklahoma by 19 bondholders also alleging BOKF, NA participated in the fraudulent sale of securities by the principals. The plaintiffs' recently filed a Fourth Amended Petition to which BOKF is preparing to respond. Management is advised by counsel that, in the Tulsa County District Court action, a loss is not probable and that the loss, if any, cannot be reasonably estimated. On December 28, 2015, in an action brought by the SEC, the New Jersey District Court entered a judgment against the principals involved in issuing the bonds. On January 8, 2020, the Court entered judgment against the principal individual and his wife for $36,805,051 in principal amount and $10,937,831 in pre-judgment interest. The SEC continues to aggressively pursue collection of the judgment. If the individual principal and his wife cannot pay the bonds, a bondholder loss could become probable. Management has been advised by counsel that BOKF, NA has valid defenses to claims of bondholders and that no loss to the Company is probable. No provision for losses has been made at this time. BOKF, NA estimates that, upon sale of all remaining collateral securing payment of the bonds, approximately $25 million in principal will remain outstanding. A reasonable estimate cannot be made of the amount of any bondholder loss, though the amount of bondholder loss could be material to the Company in the event a loss to the Company becomes probable. In the ordinary course of business, BOK Financial and its subsidiaries are subject to legal actions and complaints. Management believes, based upon the opinion of counsel, that the actions and liability or loss, if any, resulting from the final outcomes of the proceedings, will not have a material effect on the Company's financial condition, results of operations or cash flows. Alternative Investment Commitments The Company invests in several tax credit entities and other funds as permitted by banking regulations. Consolidation of these investments is based on the variable interest model.

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2023
Stockholders' Equity Note [Abstract]
Shareholders' Equity [Text Block]	Shareholders' Equity On May 2, 2023, the Company declared a quarterly cash dividend of $0.54 per common share payable on or about May 30, 2023 to shareholders of record as of May 15, 2023. Dividends declared were $0.54 per share during the three months ended March 31, 2023 and $0.53 per share during the three months ended March 31, 2022. Accumulated Other Comprehensive Income (Loss) AOCI includes unrealized gains and losses on available for sale ("AFS") securities. AOCI also includes unrealized losses on AFS securities that were transferred from AFS to investment securities in the second quarter of 2022. Such amounts are being amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization of premium on the transferred securities. Gains and losses in AOCI are net of deferred income taxes. A rollforward of the components of accumulated other comprehensive income (loss) is included as follows (in thousands): Unrealized Gain (Loss) on Available for Sale Securities Investment Securities Transferred from AFS Employee Benefit Plans Total Balance, Dec. 31, 2021 $ 69,775 $ — $ 2,596 $ 72,371 Net change in unrealized gain (loss) (639,041) — — (639,041) Reclassification adjustments included in earnings: Gain on available for sale securities, net (937) — — (937) Other comprehensive loss, before income taxes (639,978) — — (639,978) Federal and state income taxes (149,781) — — (149,781) Other comprehensive loss, net of income taxes (490,197) — — (490,197) Balance, March 31, 2022 $ (420,422) $ — $ 2,596 $ (417,826) Balance, Dec. 31, 2022 $ (664,618) $ (172,337) $ — $ (836,955) Net change in unrealized gain (loss) 124,045 — — 124,045 Interest revenue, Investment securities — 16,051 — 16,051 Other comprehensive loss, before income taxes 124,045 16,051 — 140,096 Federal and state income taxes 28,179 3,516 — 31,695 Other comprehensive income, net of income taxes 95,866 12,535 — 108,401 Balance, March 31, 2023 $ (568,752) $ (159,802) $ — $ (728,554)

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Earnings Per Share (In thousands, except share and per share amounts) Three Months Ended March 31, 2023 2022 Numerator: Net income attributable to BOK Financial Corp. shareholders $ 162,368 $ 62,488 Less: Earnings allocated to participating securities 1,255 451 Numerator for basic earnings per share – income available to common shareholders 161,113 62,037 Effect of reallocating undistributed earnings of participating securities — — Numerator for diluted earnings per share – income available to common shareholders $ 161,113 $ 62,037 Denominator: Weighted average shares outstanding 66,849,288 68,306,107 Less: Participating securities included in weighted average shares outstanding 517,513 493,707 Denominator for basic earnings per common share 66,331,775 67,812,400 Dilutive effect of employee stock compensation plans — 1,451 Denominator for diluted earnings per common share 66,331,775 67,813,851 Basic earnings per share $ 2.43 $ 0.91 Diluted earnings per share $ 2.43 $ 0.91

Reportable Segments

Reportable Segments	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Reportable Segments [Text Block]	Reportable Segments Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended March 31, 2023 is as follows (in thousands): Commercial Consumer Wealth Funds Management and Other BOK Net interest revenue from external sources $ 287,646 $ 21,146 $ 20,940 $ 22,616 $ 352,348 Net interest revenue (expense) from internal sources (21,101) 88,235 33,166 (100,300) — Net interest revenue (expense) 266,545 109,381 54,106 (77,684) 352,348 Net loans charged off and provision for credit losses 76 1,184 (24) 14,764 16,000 Net interest revenue after provision for credit losses 266,469 108,197 54,130 (92,448) 336,348 Other operating revenue 56,845 30,610 108,911 (18,501) 177,865 Other operating expense 73,504 50,198 82,039 100,071 305,812 Net direct contribution 249,810 88,609 81,002 (211,020) 208,401 Gain (loss) on financial instruments, net (58) (4,673) — 4,731 — Change in fair value of mortgage servicing rights — (6,059) — 6,059 — Gain (loss) on repossessed assets, net 859 14 — (873) — Corporate expense allocations 17,729 11,618 12,386 (41,733) — Net income (loss) before taxes 232,882 66,273 68,616 (159,370) 208,401 Federal and state income taxes 56,335 15,586 16,189 (42,205) 45,905 Net income (loss) 176,547 50,687 52,427 (117,165) 162,496 Net income attributable to non-controlling interests — — — 128 128 Net income (loss) attributable to BOK Financial Corp. shareholders $ 176,547 $ 50,687 $ 52,427 $ (117,293) $ 162,368 Average assets $ 28,162,934 $ 9,934,511 $ 11,663,096 $ (3,778,073) $ 45,982,468 Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended March 31, 2022 is as follows (in thousands): Commercial Consumer Wealth Funds Management and Other BOK Net interest revenue from external sources $ 147,590 $ 16,915 $ 56,231 $ 47,675 $ 268,411 Net interest revenue (expense) from internal sources (10,579) 10,292 (465) 752 — Net interest revenue 137,011 27,207 55,766 48,427 268,411 Net loans charged off and provision for credit losses 5,343 1,112 (71) (6,384) — Net interest revenue after provision for credit losses 131,668 26,095 55,837 54,811 268,411 Other operating revenue 57,427 33,961 25,018 (28,550) 87,856 Other operating expense 65,114 48,789 74,620 89,095 277,618 Net direct contribution 123,981 11,267 6,235 (62,834) 78,649 Gain (loss) on financial instruments, net (204) (57,895) — 58,099 — Change in fair value of mortgage servicing rights — 49,110 — (49,110) — Gain (loss) on repossessed assets, net 1,793 45 — (1,838) — Corporate expense allocations 16,246 12,080 12,071 (40,397) — Net income before taxes 109,324 (9,553) (5,836) (15,286) 78,649 Federal and state income taxes 26,980 (2,236) (1,315) (7,232) 16,197 Net income 82,344 (7,317) (4,521) (8,054) 62,452 Net loss attributable to non-controlling interests — — — (36) (36) Net income attributable to BOK Financial Corp. shareholders $ 82,344 $ (7,317) $ (4,521) $ (8,018) $ 62,488 Average assets $ 29,823,905 $ 10,273,890 $ 21,323,795 $ (10,860,516) $ 50,561,074

Fees and Commissions Revenue Fe

Fees and Commissions Revenue Fees and Commissions Revenue	3 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Fees and Commissions Revenue [Text Block]	Fees and Commissions Revenue Fees and commissions revenue is generated through the sales of products, consisting primarily of financial instruments, and the performance of services for customers under contractual obligations. Revenue from providing services for customers is recognized at the time services are provided in an amount that reflects the consideration we expect to be entitled to for those services. Revenue is recognized based on the application of five steps: • Identify the contract with a customer • Identify the performance obligations in the contract • Determine the transaction price • Allocate the transaction price to the performance obligations in the contract • Recognize revenue when (or as) the Company satisfies a performance obligation For contracts with multiple performance obligations, individual performance obligations are accounted for separately if the customer can benefit from the good or service on its own or with other resources readily available to the customer, and the promise to transfer goods and services to the customer is separately identifiable in the contract. The transaction price is allocated to the performance obligations based on relative standalone selling prices. Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and have discretion in establishing the price for the services or products. Revenue is recognized on a net basis whenever we act as an agent for products or services of others. Brokerage and trading revenue includes revenues from trading, customer hedging, retail brokerage and investment banking. Trading revenue includes net realized and unrealized gains primarily related to sales of securities to institutional customers and related derivative contracts. Customer hedging revenue includes realized and unrealized changes in the fair value of derivative contracts held for customer risk management programs including credit valuation adjustments, as necessary. We offer commodity, interest rate, foreign exchange and equity derivatives to our customers. These customer contracts are offset with contracts with selected counterparties and exchanges to minimize changes in market risk from changes in commodity prices, interest rates or foreign exchange rates. Retail brokerage revenue represents fees and commissions earned on sales of fixed income securities, annuities, mutual funds and other financial instruments to retail customers. Investment banking revenue includes fees earned upon completion of underwriting and financial advisory services. Investment banking revenue also includes fees earned in conjunction with loan syndications. Insurance brokerage revenues represents fees and commissions earned on placement of insurance products with carriers for property and casualty and health coverage. Transaction card revenue includes merchant discount fees and electronic funds transfer network fees, net of interchange fees paid to card issuers and assessments paid to card networks. Merchant discount fees represent fees paid by customers for account management and electronic processing of card transactions. Merchant discount fees are recognized at the time the customer's transactions are processed or other services are performed. The Company also maintains the TransFund electronic funds transfer network for the benefit of its members, which includes the Bank. Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members. Fiduciary and asset management revenue includes fees from asset management, custody, recordkeeping, investment advisory and administration services. Revenue is recognized on an accrual basis at the time the services are performed and may be based on either the fair value of the account or the service provided. Deposit service charges and fees include commercial account service charges, overdraft fees, check card fee revenue and automated service charge and other deposit service fees. Fees are recognized at least quarterly in accordance with published deposit account agreements and disclosure statements for retail accounts or contractual agreements for commercial accounts. Item charges for overdraft or non-sufficient funds items are recognized as items are presented for payment. Account balance charges and activity fees are accrued monthly and collected in arrears. Commercial account activity fees may be offset by an earnings credit based on account balances. Check card fees represent interchange fees paid by a merchant bank for transactions processed from cards issued by the Company. Check card fees are recognized when transactions are processed. Mortgage banking revenue includes revenues recognized in conjunction with the origination, marketing and servicing of conventional and government-sponsored residential mortgage loans. Mortgage production revenue includes net realized gains (losses) on sales of residential mortgage loans in the secondary market and the net change in unrealized gains (losses) on residential mortgage loans held for sale. Mortgage production revenue also includes changes in the fair value of derivative contracts not designated as hedging instruments related to residential mortgage loan commitments and forward sales contracts. Mortgage servicing revenue includes servicing fee income and late charges on loans serviced for others. Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended March 31, 2023. Commercial Consumer Wealth Management Funds Management & Other Consolidated Out of Scope 1 In Scope 2 Trading revenue $ — $ — $ 27,598 $ — $ 27,598 $ 27,598 $ — Customer hedging revenue 6,487 — 100 1,767 8,354 8,354 — Retail brokerage revenue — — 3,844 — 3,844 — 3,844 Insurance brokerage revenue — — 3,306 — 3,306 — 3,306 Investment banking revenue 3,698 — 5,596 — 9,294 3,598 5,696 Brokerage and trading revenue 10,185 — 40,444 1,767 52,396 39,550 12,846 TransFund EFT network revenue 20,499 908 (17) 2 21,392 — 21,392 Merchant services revenue 2,150 8 — — 2,158 — 2,158 Corporate card revenue 1,785 — 177 109 2,071 — 2,071 Transaction card revenue 24,434 916 160 111 25,621 — 25,621 Personal trust revenue — — 23,945 — 23,945 — 23,945 Corporate trust revenue — — 7,660 — 7,660 — 7,660 Institutional trust & retirement plan services revenue — — 12,835 — 12,835 — 12,835 Investment management services and other revenue — — 6,238 (21) 6,217 — 6,217 Fiduciary and asset management revenue — — 50,678 (21) 50,657 — 50,657 Commercial account service charge revenue 12,871 499 477 — 13,847 — 13,847 Overdraft fee revenue 25 4,828 20 — 4,873 — 4,873 Check card revenue — 5,638 — 1 5,639 — 5,639 Automated service charge and other deposit fee revenue 237 1,313 59 — 1,609 — 1,609 Deposit service charges and fees 13,133 12,278 556 1 25,968 — 25,968 Mortgage production revenue — (633) — — (633) (633) — Mortgage servicing revenue — 15,558 — (558) 15,000 15,000 — Mortgage banking revenue — 14,925 — (558) 14,367 14,367 — Other revenue 8,083 2,462 17,073 (10,648) 16,970 8,560 8,410 Total fees and commissions revenue $ 55,835 $ 30,581 $ 108,911 $ (9,348) $ 185,979 $ 62,477 $ 123,502 1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended March 31, 2022. Commercial Consumer Wealth Management Funds Management & Other Consolidated Out of Scope 1 In Scope 2 Trading revenue $ — $ — $ (54,048) $ — $ (54,048) $ (54,048) $ — Customer hedging revenue 12,979 — 817 (2,858) 10,938 10,938 — Retail brokerage revenue — — 4,610 — 4,610 — 4,610 Insurance brokerage revenue — — 3,738 — 3,738 — 3,738 Investment banking revenue 3,358 — 4,325 — 7,683 3,099 4,584 Brokerage and trading revenue 16,337 — (40,558) (2,858) (27,079) (40,011) 12,932 TransFund EFT network revenue 18,153 886 (17) 1 19,023 — 19,023 Merchant services revenue 3,641 10 — — 3,651 — 3,651 Corporate card revenue 1,376 — 76 90 1,542 — 1,542 Transaction card revenue 23,170 896 59 91 24,216 — 24,216 Personal trust revenue — — 24,797 — 24,797 — 24,797 Corporate trust revenue — — 3,958 — 3,958 — 3,958 Institutional trust & retirement plan services revenue — — 12,567 — 12,567 — 12,567 Investment management services and other revenue — — 5,121 (44) 5,077 — 5,077 Fiduciary and asset management revenue — — 46,443 (44) 46,399 — 46,399 Commercial account service charge revenue 13,131 450 513 — 14,094 — 14,094 Overdraft fee revenue 31 6,193 23 — 6,247 — 6,247 Check card revenue — 5,545 — — 5,545 — 5,545 Automated service charge and other deposit fee revenue 23 1,107 (14) 2 1,118 — 1,118 Deposit service charges and fees 13,185 13,295 522 2 27,004 — 27,004 Mortgage production revenue — 5,055 — — 5,055 5,055 — Mortgage servicing revenue — 12,076 — (481) 11,595 11,595 — Mortgage banking revenue — 17,131 — (481) 16,650 16,650 — Other revenue 4,272 2,655 18,557 (15,039) 10,445 7,275 3,170 Total fees and commissions revenue $ 56,964 $ 33,977 $ 25,023 $ (18,329) $ 97,635 $ (16,086) $ 113,721 1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements [Text Block]	Fair Value Measurements Fair value is defined by applicable accounting guidance as the price to sell an asset or transfer a liability in an orderly transaction between market participants in the principal market for the given asset or liability at the measurement date based on market conditions at that date. An orderly transaction assumes exposure to the market for a customary period for marketing activities prior to the measurement date and not a forced liquidation or distressed sale. Certain assets and liabilities are recorded in the Compan's financial statements at fair value. Some are recorded on a recurring basis and some on a non-recurring basis. For some assets and liabilities, observable market transactions and market information might be available. For other assets and liabilities, observable market transactions and market information might not be available. A hierarchy for fair value has been established which categorizes into three levels the inputs to valuation techniques used to measure fair value. The three levels are as follows: Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) - Fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities. Significant Other Observable Inputs (Level 2) - Fair value is based on significant other observable inputs which are generally determined based on a single price for each financial instrument provided to us by an applicable third-party pricing service and is based on one or more of the following: • Quoted prices for similar, but not identical, assets or liabilities in active markets; • Quoted prices for identical or similar assets or liabilities in inactive markets; • Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates; • Other inputs derived from or corroborated by observable market inputs. Significant Unobservable Inputs (Level 3) - Fair value is based upon model-based valuation techniques for which at least one significant assumption is not observable in the market. Transfers between levels are recognized as of the end of the reporting period. There were no transfers in or out of quoted prices in active markets for identical instruments to significant other observable inputs or significant unobservable inputs during the three months ended March 31, 2023 and 2022, respectively. Transfers between significant other observable inputs and significant unobservable inputs during the three months ended March 31, 2023 and 2022 were immaterial. The underlying methods used by the third-party pricing services are considered in determining the primary inputs used to determine fair values. Management has evaluated the methodologies employed by the third-party pricing services by comparing the price provided by the pricing service with other sources, including brokers' quotes, sales or purchases of similar instruments and discounted cash flows to establish a basis for reliance on the pricing service values. Significant differences between the pricing service provided value and other sources are discussed with the pricing service to understand the basis for their values. Based on all observable inputs, management may adjust prices obtained from third-party pricing services to more appropriately reflect the prices that would be received to sell assets or paid to transfer liabilities in orderly transactions in the current market. No significant adjustments were made to prices provided by third-party pricing services at March 31, 2023 or December 31, 2022. Assets and Liabilities Measured at Fair Value on a Recurring Basis The fair value of financial assets and liabilities measured on a recurring basis was as follows as of March 31, 2023 (in thousands): Total Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs Assets: Trading securities: U.S. government securities $ 5,618 $ 4,878 $ 740 $ — Residential agency mortgage-backed securities 2,210,721 — 2,210,721 — Municipal securities 37,455 — 37,455 — Asset-backed securities 10,194 — 10,194 — Other trading securities 30,370 — 30,370 — Total trading securities 2,294,358 4,878 2,289,480 — Available for sale securities: U.S. Treasury 914 914 — — Municipal securities 634,207 — 634,207 — Residential agency mortgage-backed securities 6,022,708 — 6,022,708 — Residential non-agency mortgage-backed securities 651,351 — 651,351 — Commercial agency mortgage-backed securities 4,628,188 — 4,628,188 — Other debt securities 473 — — 473 Total available for sale securities 11,937,841 914 11,936,454 473 Fair value option securities: U.S. Treasury 106,307 106,307 — — Residential agency mortgage-backed securities 220,083 — 220,083 — Total fair value option securities 326,390 106,307 220,083 — Residential mortgage loans held for sale 1 74,175 — 67,024 7,151 Mortgage servicing rights 2 299,803 — — 299,803 Derivative contracts, net of cash collateral 3 394,291 303 393,988 — Liabilities: Derivative contracts, net of cash collateral 3 510,483 3,822 506,661 — 1 Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.43% of the unpaid principal balance. 2 A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3 See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes . The fair value of financial assets and liabilities measured on a recurring basis was as follows as of December 31, 2022 (in thousands): Total Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs Assets: Trading securities: U.S. government securities $ 9,823 $ 4,970 $ 4,853 $ — Residential agency mortgage-backed securities 4,406,848 — 4,406,848 — Municipal securities 21,484 — 21,484 — Other trading securities 26,006 — 26,006 — Total trading securities 4,464,161 4,970 4,459,191 — Available for sale securities: U.S. Treasury 898 898 — — Municipal securities 624,500 — 624,500 — Residential agency mortgage-backed securities 5,814,496 — 5,814,496 — Residential non-agency mortgage-backed securities 577,576 — 577,576 — Commercial agency mortgage-backed securities 4,475,917 — 4,475,917 — Other debt securities 473 — — 473 Total available for sale securities 11,493,860 898 11,492,489 473 Fair value option securities — Residential agency mortgage-backed securities 296,590 — 296,590 — Residential mortgage loans held for sale 1 75,272 — 68,054 7,218 Mortgage servicing rights 2 277,608 — — 277,608 Derivative contracts, net of cash collateral 3 880,343 2,110 878,233 — Liabilities: Derivative contracts, net of cash collateral 3 554,900 16 554,884 — 1 Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.55% of the unpaid principal balance. 2 A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3 See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes. Following is a description of the Company's valuation methodologies used for assets and liabilities measured on a recurring basis: Securities The fair values of trading, available for sale and fair value option securities are based on quoted prices for identical instruments in active markets, when available. If quoted prices for identical instruments are not available, fair values are based on significant other observable inputs such as quoted prices of comparable instruments or interest rates and credit spreads, yield curves, volatilities, prepayment speeds and loss severities. The Company has elected to carry all residential mortgage-backed securities guaranteed by U.S. government agencies held as economic hedges against changes in the fair value of mortgage servicing rights at fair value with changes in the fair value recognized in earnings. The fair value of certain available for sale municipal and other debt securities may be based on significant unobservable inputs. These significant unobservable inputs include limited observed trades, projected cash flows, current credit rating of the issuers and, when applicable, the insurers of the debt and observed trades of similar debt. Discount rates are primarily based on references to interest rate spreads on comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies adjusted for a lack of trading volume. Significant unobservable inputs are developed by investment securities professionals involved in the active trading of similar securities. A summary of significant inputs used to value these securities follows. A management committee composed of senior members from the Company's Capital Markets, Risk Management and Finance departments assesses the appropriateness of these inputs quarterly. Derivatives All derivative instruments are carried on the balance sheet at fair value. Fair values for exchange-traded contracts are based on quoted prices. Fair values for over-the-counter interest rate, commodity and foreign exchange contracts are based on valuations provided either by third-party dealers in the contracts, quotes provided by independent pricing services, or a third-party provided pricing model that uses significant other observable market inputs. Credit risk is considered in determining the fair value of derivative instruments. Management determines fair value adjustments based on various risk factors including, but not limited to, current fair value, probability of default and loss given default. We also consider our own credit risk in determining the fair value of derivative contracts. Changes in our credit rating would affect the fair value of our derivative liabilities. In the event of a credit downgrade, the fair value of our derivative liabilities would increase. Residential Mortgage Loans Held for Sale Residential mortgage loans held for sale are carried on the balance sheet at fair value. The Company has elected to carry all residential mortgage loans originated for sale at fair value. Changes in the fair value of these financial instruments are recognized in earnings. The fair values of residential mortgage loans held for sale are based upon quoted market prices of such loans sold in securitization transactions, including related unfunded loan commitments and forward sales contracts. The fair value of mortgage loans that were unable to be sold to U.S. government agencies were determined using quoted prices of loans that are sold in securitization transactions with a liquidity discount applied. Fair Value of Assets and Liabilities Measured on a Non-Recurring Basis Assets measured at fair value on a non-recurring basis include collateral for certain nonaccruing loans and real property and other assets acquired to satisfy loans, which are based primarily on comparisons to completed sales of similar assets. The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at March 31, 2023 for which the fair value was adjusted during the three months ended March 31, 2023: Fair Value Adjustments for the Carrying Value at March 31, 2023 Three Months Ended Quoted Prices Significant Significant Gross charge-offs against allowance for loan losses Other gains (losses), net Nonaccruing loans $ — $ — $ 14,040 $ 1,991 $ — Real estate and other repossessed assets — 547 — — (101) The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at March 31, 2022 for which the fair value was adjusted during the three months ended March 31, 2022: Fair Value Adjustments for the Carrying Value at March 31, 2022 Three Months Ended Quoted Prices Significant Significant Gross charge-offs against allowance for loan losses Other gains (losses), net Nonaccruing loans $ — $ 4,168 $ 244 $ 818 $ — Real estate and other repossessed assets — 1,412 400 — 106 The fair value of collateral-dependent nonaccruing loans secured by real estate and real estate and other repossessed assets and the related fair value adjustments are generally based on unadjusted third-party appraisals. Our appraisal review policies require appraised values to be supported by observed inputs derived principally from or corroborated by observable market data. Appraisals that are not based on observable inputs or that require significant adjustments or fair value measurements that are not based on third-party appraisals are considered to be based on significant unobservable inputs. Non-recurring fair value measurements of collateral-dependent nonaccruing loans and real estate and other repossessed assets based on significant unobservable inputs are generally due to estimates of current fair values between appraisal dates. Significant unobservable inputs include listing prices for the same or comparable assets, uncorroborated expert opinions or management's knowledge of the collateral or industry. Non-recurring fair value measurements of collateral dependent loans secured by mineral rights are generally determined by our internal staff of engineers on projected cash flows under current market conditions and are based on significant unobservable inputs. Projected cash flows are discounted according to risk characteristics of the underlying oil and gas properties. Assets are evaluated to demonstrate with reasonable certainty that crude oil, natural gas and natural gas liquids can be recovered from known oil and gas reservoirs under existing economic and operating conditions at current prices with existing conventional equipment, operating methods and costs. Significant unobservable inputs are developed by asset management and workout professionals and approved by senior Credit Administration executives. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of March 31, 2023 follows (in thousands): Fair Value Valuation Technique(s) Unobservable Input Range Nonaccruing loans $ 14,040 Discounted cash flows Management knowledge of industry and non-real estate collateral including, but not limited to, recoverable oil and gas reserves, forward-looking commodity prices, estimated operating costs 88% - 88% (88%) 1 1 Represents fair value as a percentage of the unpaid principal balance. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of March 31, 2022 follows (in thousands): Fair Value Valuation Technique(s) Unobservable Input Range Nonaccruing loans $ 244 Discounted cash flows Management knowledge of industry and non-real estate collateral including, but not limited to, recoverable oil and gas reserves, forward-looking commodity prices, estimated operating costs 3% - 25% (5%) 1 Real estate and other repossessed assets 400 Discounted cash flows Marketability adjustments off appraised value. 2 75% - 75% (75%) 1 Represents fair value as a percentage of the unpaid principal balance. 2 Marketability adjustments include consideration of estimated costs to sell which is approximately 10% of the fair value. Fair Value of Financial Instruments The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or are measured at fair value on a non-recurring basis as of March 31, 2023 (dollars in thousands): Carrying Estimated Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs Cash and due from banks $ 792,371 $ 792,371 $ 792,371 $ — $ — Interest-bearing cash and cash equivalents 571,613 571,613 571,613 — — Trading securities: U.S. government securities 5,618 5,618 4,878 740 — Residential agency mortgage-backed securities 2,210,721 2,210,721 — 2,210,721 — Municipal securities 37,455 37,455 — 37,455 — Asset-backed securities 10,194 10,194 — 10,194 — Other trading securities 30,370 30,370 — 30,370 — Total trading securities 2,294,358 2,294,358 4,878 2,289,480 — Investment securities: Municipal securities 153,739 160,866 — 33,158 127,708 Residential agency mortgage-backed securities 2,264,922 2,118,538 — 2,118,538 — Commercial agency mortgage-backed securities 15,684 14,861 — 14,861 — Other debt securities 14,288 13,421 — 13,421 — Total investment securities 2,448,633 2,307,686 — 2,179,978 127,708 Allowance for credit losses (497) — — — — Investment securities, net of allowance 2,448,136 2,307,686 — 2,179,978 127,708 Available for sale securities: U.S. Treasury 914 914 914 — — Municipal securities 634,207 634,207 — 634,207 — Residential agency mortgage-backed securities 6,022,708 6,022,708 — 6,022,708 — Residential non-agency mortgage-backed securities 651,351 651,351 — 651,351 — Commercial agency mortgage-backed securities 4,628,188 4,628,188 — 4,628,188 — Other debt securities 473 473 — — 473 Total available for sale securities 11,937,841 11,937,841 914 11,936,454 473 Fair value option securities: U.S. Treasury 106,307 106,307 106,307 — — Residential agency mortgage-backed securities 220,083 220,083 — 220,083 — Total fair value option securities 326,390 326,390 106,307 220,083 — Residential mortgage loans held for sale 74,175 74,175 — 67,024 7,151 Loans: Commercial 14,217,349 14,129,311 — — 14,129,311 Commercial real estate 4,815,316 4,703,787 — — 4,703,787 Loans to individuals 3,717,388 3,547,326 — — 3,547,326 Total loans 22,750,053 22,380,424 — — 22,380,424 Allowance for loan losses (249,460) — — — — Loans, net of allowance 22,500,593 22,380,424 — — 22,380,424 Mortgage servicing rights 299,803 299,803 — — 299,803 Derivative instruments with positive fair value, net of cash collateral 394,291 394,291 303 393,988 — Deposits with no stated maturity 31,004,137 31,004,137 — — 31,004,137 Time deposits 1,576,610 1,547,154 — — 1,547,154 Other borrowed funds 6,335,609 6,333,599 — — 6,333,599 Subordinated debentures 131,148 125,077 — 125,077 — Derivative instruments with negative fair value, net of cash collateral 510,483 510,483 3,822 506,661 — The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or are measured at fair value on a non-recurring basis as of December 31, 2022 (dollars in thousands): Carrying Estimated Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs Cash and due from banks $ 943,810 $ 943,810 $ 943,810 $ — $ — Interest-bearing cash and cash equivalents 457,906 457,906 457,906 — — Trading securities: U.S. government securities 9,823 9,823 4,970 4,853 — Residential agency mortgage-backed securities 4,406,848 4,406,848 — 4,406,848 — Municipal securities 21,484 21,484 — 21,484 — Other trading securities 26,006 26,006 — 26,006 — Total trading securities 4,464,161 4,464,161 4,970 4,459,191 — Investment securities: Municipal securities 170,629 176,621 — 38,106 138,515 Residential agency mortgage-backed securities 2,315,219 2,143,360 — 2,143,360 — Commercial agency mortgage-backed securities 15,609 14,588 — 14,588 — Other debt securities 12,788 12,199 — 12,199 — Total investment securities 2,514,245 2,346,768 — 2,208,253 138,515 Allowance for credit losses (558) — — — — Investment securities, net of allowance 2,513,687 2,346,768 — 2,208,253 138,515 Available for sale securities: U.S. Treasury 898 898 898 — — Municipal securities 624,500 624,500 — 624,500 — Residential agency mortgage-backed securities 5,814,496 5,814,496 — 5,814,496 — Residential non-agency mortgage-backed securities 577,576 577,576 — 577,576 — Commercial agency mortgage-backed securities 4,475,917 4,475,917 — 4,475,917 — Other debt securities 473 473 — — 473 Total available for sale securities 11,493,860 11,493,860 898 11,492,489 473 Fair value option securities — Residential agency mortgage-backed securities 296,590 296,590 — 296,590 — Residential mortgage loans held for sale 75,272 75,272 — 68,054 7,218 Loans: Commercial 14,212,499 13,905,765 — — 13,905,765 Commercial real estate 4,606,777 4,454,048 — — 4,454,048 Loans to individuals 3,737,874 3,531,410 — — 3,531,410 Total loans 22,557,150 21,891,223 — — 21,891,223 Allowance for loan losses (235,704) — — — — Loans, net of allowance 22,321,446 21,891,223 — — 21,891,223 Mortgage servicing rights 277,608 277,608 — — 277,608 Derivative instruments with positive fair value, net of cash collateral 880,343 880,343 2,110 878,233 — Deposits with no stated maturity 33,018,863 33,018,863 — — 33,018,863 Time deposits 1,461,842 1,431,245 — — 1,431,245 Other borrowed funds 7,007,285 7,005,305 — — 7,005,305 Subordinated debentures 131,205 121,497 — 121,497 — Derivative instruments with negative fair value, net of cash collateral 554,900 554,900 16 554,884 — Because no market exists for certain of these financial instruments and management does not intend to sell these financial instruments, the fair values shown in the tables above may not represent values at which the respective financial instruments could be sold individually or in the aggregate at the given reporting date.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2023
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events The Company evaluated events from the date of the consolidated financial statements on March 31, 2023 through the issuance of those consolidated financial statements included in this Quarterly Report on Form 10-Q. No events were identified requiring recognition in and/or disclosure in the consolidated financial statements.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2023
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	The accompanying unaudited consolidated financial statements of BOK Financial Corporation ("BOK Financial" or "the Company") have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.
Principles of Consolidation [Policy Text Block]	The unaudited consolidated financial statements include accounts of BOK Financial and its subsidiaries, principally BOKF, NA ("the Bank"), BOK Financial Securities, Inc., and BOK Financial Private Wealth, Inc. Operating divisions of the Bank include Bank of Albuquerque, Bank of Oklahoma, Bank of Texas, BOK Financial in Arizona, Arkansas, Colorado and Kansas/Missouri, BOK Financial Mortgage and the TransFund electronic funds network.
Reclassification, Policy [Policy Text Block]	Certain reclassifications have been made to conform to the current period presentation.
Newly Adopted and Pending Accounting Policies [Policy Text Block]	Newly Adopted and Pending Accounting Policies Financial Accounting Standards Board ("FASB") FASB Accounting Standards Update No. 2022-02, Financial Instruments - Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures ("ASU 2022-02") On March 31, 2022, the FASB issued ASU 2022-02 which eliminates the accounting guidance on troubled debt restructurings ("TDRs") for creditors in ASC 310-40, while also no longer requiring an entity to consider renewals, modifications, and extensions that result from reasonably expected TDRs in their calculation of the allowance for credit losses. For receivables for which there has been a modification in their contractual cash flows, ASU 2022-02 requires disclosure, by class of financing receivable, of the types of modifications, the financial effects of those modifications, and the performance of these modified receivables, along with receivables that had a payment default during the current period and had modifications to the contractual cash flows within 12 months prior to the default. Further, ASU 2022-02 requires entities to disclose gross write-offs recorded in the current period by year of origination in the vintage disclosures on a year-to-date basis. ASU 2022-02 was effective for the Company January 1, 2023. Amendments related to TDR recognition and measurement and vintage disclosures were applied prospectively and are included in Note 4 to the consolidated financial statements. Adoption of this standard did not have a material effect on the Company's financial condition or results of operations. FASB Accounting Standards Update No. 2023-01, Leases (Topic 842): Common Control Arrangements ("ASU 2023-01") On March 27, 2023, the FASB issued ASU 2023-01 which, in part, amends the accounting for leasehold improvement in common-control arrangements. Under previous guidance, a lessee is generally required to amortize leasehold improvements that it owns over the shorter of the useful life of those improvements or the lease term. However, due to the nature of leasehold improvements made under leases between entities under common control, ASU 2023-01 requires a lessee in a common-control arrangement to amortize such leasehold improvements that it owns over the improvements' useful life to the common control group, regardless of the lease term. ASU 2023-01 is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Adoption of ASU 2023-01 is not expected to have a material impact on the Company's financial statements. FASB Accounting Standards Update No. 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method ("ASU 2023-02") On March 29, 2023, the FASB issued ASU 2023-02 which amends previous guidance to allow entities to account for qualifying tax equity investments using the proportional amortization method regardless of the program giving rise to the related income tax credits, as opposed to only being allowed to apply this method to qualifying tax equity investments in low-income housing tax credit structures as was the case under previous guidance. ASU 2023-02 is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Adoption of ASU 2023-02 is not expected to have a material impact on the Company's financial statements.
Derivatives, Policy [Policy Text Block]	Derivative instruments may be used by the Company as part of its internal risk management programs or may be offered to customers. All derivative instruments are carried at fair value, and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customer or other counterparties reduce the fair value of asset contracts. Deterioration of our credit rating could decrease the fair value of our derivative liabilities. When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis. Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral in the event of default is reasonably assured. None of these derivative contracts have been designated as hedging instruments for accounting purposes. Customer Risk Management Programs BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, interest rates and foreign exchange rates with derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize the risk of changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to customer contracts, except for a fixed pricing spread or fee paid to BOK Financial as profit and compensation for administrative costs and credit risk which is recognized over the life of the contracts and included in Other operating revenue – Brokerage and trading revenue in the Consolidated Statements of Earnings. Trading BOK Financial may offer derivative instruments such as to-be-announced securities to mortgage banking customers to enable them to manage their market risk or to mitigate the Company's market risk of holding trading securities. Changes in the fair value of derivative instruments for trading purposes or used to mitigate the market risk of holding trading securities are included in Other operating revenue – Brokerage and trading revenue. Internal Risk Management Programs BOK Financial may use derivative contracts in managing its interest rate sensitivity, as part of its economic hedge of the change in the fair value of mortgage servicing rights. Changes in the fair value of derivative instruments used in managing interest rate sensitivity and as part of the economic hedge of changes in the fair value of mortgage servicing rights are included in Other operating revenue – Gain (loss) on derivatives, net in the Consolidated Statements of Earnings.
Loans and Allowances for Credit Losses, Loans [Policy Text Block]	Loans Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower's difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential mortgage loans guaranteed by U.S. government agencies, are as follows. Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when more than 90 days past due or within 60 days of being notified of the borrower's bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Accrued but not paid interest receivable is included in Receivables in the Consolidated Balance Sheets. Payments on nonaccruing loans are applied to principal or recognized as interest income, according to management's judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower's financial condition or a sustained period of performance. For loans acquired with no evidence of credit deterioration, discounts are accreted on either an individual basis for loans with unique characteristics or on a pool basis for groups of homogeneous loans. Accretion is discontinued when a loan with an individually attributed discount is placed on nonaccruing status. Modifications of loans to existing borrowers generally consist of interest rate reductions, extension of payment terms, or a combination of these. Modifications may arise either voluntarily through negotiations with the borrower or involuntarily through court order. Payment deferrals up to six months are generally considered to be short-term modifications. Generally, principal and accrued but unpaid interest is not voluntarily forgiven. A change to the allowance for credit losses is generally not recorded upon modification because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance methodology. Performing loans may be renewed under the current collateral value, debt service ratio and other underwriting standards. Nonaccruing loans may be renewed and will remain classified as nonaccruing. Occasionally, loans, other than residential mortgage loans, may be held for sale in order to manage credit concentration. These loans are carried at the lower of cost or fair value with gains or losses recognized in Other gains (losses), net in the Consolidated Statements of Earnings. All loans are charged off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a modification. The charge-off amount is determined through a quarterly evaluation of available cash resources and collateral values. Internally risk graded loans are evaluated quarterly, and charge-offs are taken in the quarter in which the loss is identified. Non-risk graded loans that are past due between 60 days and 180 days, based on the loan product type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status. Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable. Amortization does not anticipate loan prepayments. Net unamortized fees are recognized in full at time of payoff. Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company may have the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheets. We do not expect to receive all principal and interest based on the loan's contractual terms. A portion of the principal balance continues to be guaranteed; however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of the expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in accordance with U.S. government agency guidelines. Interest continues to accrue based on the modified rate. Guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors.
Loans and Allowances for Credit Losses, Allowances for Credit Losses [Policy Text Block]	Allowances for Credit Losses and Accrual for Off-balance Sheet Credit Risk from Unfunded Loans Commitments The allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments represent the portion of the amortized cost basis of loans that we do not expect to collect over the asset's contractual life, considering past events, current conditions, and reasonable and supportable forecasts of future economic conditions. The appropriateness of the allowance for credit losses, including industry and product adjustments, is assessed quarterly by a senior management Allowance Committee. This review is based on an on-going evaluation of the estimated expected credit losses in the portfolio and on unused commitments to provide financing. A well-documented methodology has been developed and is applied by an independent Credit Administration department to assure consistency across the Company. The allowance for loan losses consists of specific allowances attributed to certain individual loans, generally nonaccruing loans, with dissimilar risk characteristics that have not yet been charged down to amounts we expect to recover and general allowances for estimated credit losses on pools of loans that share similar risk characteristics. When full collection of principal or interest is uncertain, the loan's risk characteristics have changed, and we exclude the loan from the general allowance pool, typically designating it as nonaccruing. For these loans, a specific allowance reflects the expected credit loss. We measure specific allowances for loans excluded from the general allowance pool by an evaluation of estimated future cash flows discounted at the loan's initial effective interest rate or the fair value of collateral for certain collateral dependent loans. For a non-collateral dependent loan, the specific allowance is the amount by which the loan's amortized cost basis exceeds its net realizable value. We measure the specific allowance for collateral dependent loans as the amount by which the loan's amortized cost basis exceeds its fair value. When repayment is expected to be provided substantially through the sale of collateral, we deduct estimated selling costs from the collateral's fair value. Generally, for real property held as collateral for loans, third party appraisals that conform to Uniform Standards of Professional Appraisal Practice serve as the basis for the fair value of real property held as collateral. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. For energy loans, our internal staff of engineers generally determines collateral value of mineral rights based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. For real property held as collateral for other loans, third party appraisals that conform to Uniform Standards of Professional Appraisal Practice generally serve as the basis for the fair value. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. Our special assets staff generally determines the value of other collateral based on projected liquidation cash flows under current market conditions. We evaluate collateral values and available cash resources quarterly. Historical statistics may be used to estimate specific allowances in limited situations, such as when a collateral dependent loan is removed from the general allowance pool near the end of a reporting period until an appraisal of collateral value is received or a full assessment of future cash flows is completed. General allowances estimate expected credit losses on pools of loans sharing similar risk characteristics that are expected to occur over the loan's estimated remaining life. The loan's estimated remaining life represents the contractual term adjusted for amortization, estimates of prepayments, and borrower-owned extension options. Approximately 90 percent of the committed dollars in the loan portfolio is risk graded loans with general allowance model inputs that include probability of default, loss given default, and exposure at default. Probability of default is based on the migration of loans from performing to nonperforming using historical life of loan analysis periods. Loss given default is based on the aggregate losses incurred, net of estimated recoveries. Exposure at default represents an estimate of the outstanding amount of credit exposure at the time a default may occur. Charge-off migration is used to calculate the general allowance for the majority of non-risk graded loans to individuals. The expected credit loss on less than 10 percent of the committed dollars in the portfolio is calculated using charge-off migration. The expected credit loss on approximately 1 percent of the committed dollars in the portfolio is calculated using a non-modeled approach. Specifically, the calculation applies a long-term net charge-off rate to the loan balances, adjusted for the weighted average remaining maturity of each portfolio. In estimating the expected credit losses for general allowances on performing risk-graded loans, each portfolio class is assigned relevant economic loss drivers which best explain variations in portfolio net loss rates. The probability of default estimates for each portfolio class are adjusted for current and forecasted economic conditions. The result is applied to the exposure at default and loss given default to calculate the lifetime expected credit loss estimate. Selection of relevant economic loss drivers is re-evaluated periodically and involves statistical analysis as well as management judgment. The unemployment rate factors significantly in the allowance for loan losses calculation, affecting commercial and loans to individuals segments. Other primary factors impacting the commercial portfolio include BBB corporate spreads, real gross domestic product growth rate, and energy commodity prices. The primary commercial real estate variables are vacancy rate and BBB corporate spreads. In addition to the unemployment rate, the forecast for loans to individuals is tied to a home price index. The forecasts may include regional economic factors when localized conditions diverge from national conditions. An Economic Forecast Committee, consisting of senior management with members largely independent of the allowance process develops a twelve-month forward-looking forecast for the relevant economic loss drivers. Management develops these forecasts based on external data as well as a view of future economic conditions which may include adjustments for regional conditions. The forecast includes three economic scenarios and probability weights for each scenario. The base forecast represents management's view of the most likely outcome, while the downside forecast reflects reasonably possible worsening economic conditions, and the upside forecast projects reasonably possible improving conditions. At the end of the one-year reasonable and supportable forecast period, we transition from shorter-term expected losses to long-term loss averages for the loan's estimated remaining life. The difference between short-term loss forecasts and long-term loss averages is run-off over the reversion horizon, up to three years, depending on the forecasted economic scenarios. General allowances also consider the estimated impact of factors that are not captured in the modeled results or historical experience. These factors may increase or decrease modeled results by amounts determined by the Allowance Committee. Factors not captured in modeled results or historical experience may include for example, new lines of business, market conditions that have not been previously encountered, observed changes in credit risk that are not yet reflected in macro-economic factors, or economic conditions that impact loss given default assumptions. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit or guarantees that are not unconditionally cancelable by the bank. This accrual is included in other liabilities in the Consolidated Balance Sheets. The appropriateness of the accrual is determined in the same manner as the allowance for loan losses, with the added consideration of commitment usage over the remaining life for those loans that the bank can not unconditionally cancel.
Revenue [Policy Text Block]	Fees and commissions revenue is generated through the sales of products, consisting primarily of financial instruments, and the performance of services for customers under contractual obligations. Revenue from providing services for customers is recognized at the time services are provided in an amount that reflects the consideration we expect to be entitled to for those services. Revenue is recognized based on the application of five steps: • Identify the contract with a customer • Identify the performance obligations in the contract • Determine the transaction price • Allocate the transaction price to the performance obligations in the contract • Recognize revenue when (or as) the Company satisfies a performance obligation For contracts with multiple performance obligations, individual performance obligations are accounted for separately if the customer can benefit from the good or service on its own or with other resources readily available to the customer, and the promise to transfer goods and services to the customer is separately identifiable in the contract. The transaction price is allocated to the performance obligations based on relative standalone selling prices. Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and have discretion in establishing the price for the services or products. Revenue is recognized on a net basis whenever we act as an agent for products or services of others. Brokerage and trading revenue includes revenues from trading, customer hedging, retail brokerage and investment banking. Trading revenue includes net realized and unrealized gains primarily related to sales of securities to institutional customers and related derivative contracts. Customer hedging revenue includes realized and unrealized changes in the fair value of derivative contracts held for customer risk management programs including credit valuation adjustments, as necessary. We offer commodity, interest rate, foreign exchange and equity derivatives to our customers. These customer contracts are offset with contracts with selected counterparties and exchanges to minimize changes in market risk from changes in commodity prices, interest rates or foreign exchange rates. Retail brokerage revenue represents fees and commissions earned on sales of fixed income securities, annuities, mutual funds and other financial instruments to retail customers. Investment banking revenue includes fees earned upon completion of underwriting and financial advisory services. Investment banking revenue also includes fees earned in conjunction with loan syndications. Insurance brokerage revenues represents fees and commissions earned on placement of insurance products with carriers for property and casualty and health coverage. Transaction card revenue includes merchant discount fees and electronic funds transfer network fees, net of interchange fees paid to card issuers and assessments paid to card networks. Merchant discount fees represent fees paid by customers for account management and electronic processing of card transactions. Merchant discount fees are recognized at the time the customer's transactions are processed or other services are performed. The Company also maintains the TransFund electronic funds transfer network for the benefit of its members, which includes the Bank. Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members. Fiduciary and asset management revenue includes fees from asset management, custody, recordkeeping, investment advisory and administration services. Revenue is recognized on an accrual basis at the time the services are performed and may be based on either the fair value of the account or the service provided. Deposit service charges and fees include commercial account service charges, overdraft fees, check card fee revenue and automated service charge and other deposit service fees. Fees are recognized at least quarterly in accordance with published deposit account agreements and disclosure statements for retail accounts or contractual agreements for commercial accounts. Item charges for overdraft or non-sufficient funds items are recognized as items are presented for payment. Account balance charges and activity fees are accrued monthly and collected in arrears. Commercial account activity fees may be offset by an earnings credit based on account balances. Check card fees represent interchange fees paid by a merchant bank for transactions processed from cards issued by the Company. Check card fees are recognized when transactions are processed.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities (Policies)	3 Months Ended
	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives, Policy [Policy Text Block]	Derivative instruments may be used by the Company as part of its internal risk management programs or may be offered to customers. All derivative instruments are carried at fair value, and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customer or other counterparties reduce the fair value of asset contracts. Deterioration of our credit rating could decrease the fair value of our derivative liabilities. When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis. Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral in the event of default is reasonably assured. None of these derivative contracts have been designated as hedging instruments for accounting purposes. Customer Risk Management Programs BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, interest rates and foreign exchange rates with derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize the risk of changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to customer contracts, except for a fixed pricing spread or fee paid to BOK Financial as profit and compensation for administrative costs and credit risk which is recognized over the life of the contracts and included in Other operating revenue – Brokerage and trading revenue in the Consolidated Statements of Earnings. Trading BOK Financial may offer derivative instruments such as to-be-announced securities to mortgage banking customers to enable them to manage their market risk or to mitigate the Company's market risk of holding trading securities. Changes in the fair value of derivative instruments for trading purposes or used to mitigate the market risk of holding trading securities are included in Other operating revenue – Brokerage and trading revenue. Internal Risk Management Programs BOK Financial may use derivative contracts in managing its interest rate sensitivity, as part of its economic hedge of the change in the fair value of mortgage servicing rights. Changes in the fair value of derivative instruments used in managing interest rate sensitivity and as part of the economic hedge of changes in the fair value of mortgage servicing rights are included in Other operating revenue – Gain (loss) on derivatives, net in the Consolidated Statements of Earnings.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2023
Marketable Securities [Abstract]
Trading Securities, [Table Text Block]	The fair value and net unrealized gain (loss) included in trading securities are as follows (in thousands): March 31, 2023 December 31, 2022 Fair Value Net Unrealized Gain (Loss) Fair Value Net Unrealized Gain (Loss) U.S. government securities $ 5,618 $ (6) $ 9,823 $ (16) Residential agency mortgage-backed securities 2,210,721 12,289 4,406,848 4 Municipal securities 37,455 45 21,484 (136) Asset-backed securities 10,194 10 — — Other trading securities 30,370 228 26,006 (175) Total trading securities $ 2,294,358 $ 12,566 $ 4,464,161 $ (323)
Investment Securities (Held-to-Maturity) [Table Text Block]	The amortized cost and fair values of investment securities are as follows (in thousands): March 31, 2023 Amortized Carrying Fair Gross Unrealized Cost Value 1 Value Gain Loss Municipal securities $ 153,739 $ 153,739 $ 160,866 $ 7,321 $ (194) Mortgage-backed securities: Residential agency 2,472,291 2,264,922 2,118,538 163 (146,547) Commercial agency 17,259 15,684 14,861 — (823) Other debt securities 14,288 14,288 13,421 — (867) Total investment securities 2,657,577 2,448,633 2,307,686 7,484 (148,431) Allowance for credit losses (497) (497) — — — Investment securities, net of allowance $ 2,657,080 $ 2,448,136 $ 2,307,686 $ 7,484 $ (148,431) 1 Carrying value includes $209 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following. December 31, 2022 Amortized Carrying Fair Gross Unrealized Cost Value 1 Value Gain Loss Municipal securities $ 170,629 $ 170,629 $ 176,621 $ 6,456 $ (464) Mortgage-backed securities: Residential agency 2,538,565 2,315,219 2,143,360 155 (172,014) Commercial agency 17,259 15,609 14,588 — (1,021) Other debt securities 12,788 12,788 12,199 — (589) Total investment securities 2,739,241 2,514,245 2,346,768 6,611 (174,088) Allowance for credit losses (558) (558) — — — Investment securities, net of allowance $ 2,738,683 $ 2,513,687 $ 2,346,768 $ 6,611 $ (174,088) 1 Carrying value includes $225 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following. The amortized cost and fair values of investment securities at March 31, 2023, by contractual maturity, are as shown in the following table (dollars in thousands): Less than One to Six to Over Total Weighted Average Maturity 1 Fixed maturity debt securities: Carrying value $ 24,634 $ 92,723 $ 66,341 $ 13 $ 183,711 3.94 Fair value 24,917 99,241 64,977 13 189,148 Residential mortgage-backed securities: Carrying value $ 2,264,922 2 Fair value 2,118,538 Total investment securities: Carrying value $ 2,448,633 Fair value 2,307,686 1 Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty. 2 The average expected lives of residential mortgage-backed securities were 5.3 years years based upon current prepayment assumptions. Temporarily Impaired Investment Securities (dollars in thousands): March 31, 2023 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Investment: Municipal securities 9 $ — $ — $ 6,594 $ 194 $ 6,594 $ 194 Mortgage-backed securities: Residential agency 116 2,115,733 146,464 1,599 83 2,117,332 146,547 Commercial agency 2 14,861 823 — — 14,861 823 Other debt securities 3 9,153 847 255 20 9,408 867 Total investment securities 130 $ 2,139,747 $ 148,134 $ 8,448 $ 297 $ 2,148,195 $ 148,431 December 31, 2022 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Investment: Municipal securities 22 $ 18,037 $ 406 $ 544 $ 58 $ 18,581 $ 464 Mortgage-backed securities: Residential agency 116 2,142,114 172,014 — — 2,142,114 172,014 Commercial agency 2 14,588 1,021 — — 14,588 1,021 Other debt securities 3 9,428 571 257 18 9,685 589 Total investment securities 143 $ 2,184,167 $ 174,012 $ 801 $ 76 $ 2,184,968 $ 174,088
Available For Sale Securities [Table Text Block]	The amortized cost and fair value of available for sale securities are as follows (in thousands): March 31, 2023 Amortized Fair Gross Unrealized Cost Value Gain Loss U.S. Treasury $ 1,000 $ 914 $ — $ (86) Municipal securities 685,963 634,207 1,338 (53,094) Mortgage-backed securities: Residential agency 6,311,728 6,022,708 15,379 (304,399) Residential non-agency 690,345 651,351 11,271 (50,265) Commercial agency 4,989,813 4,628,188 5,738 (367,363) Other debt securities 500 473 — (27) Total available for sale securities $ 12,679,349 $ 11,937,841 $ 33,726 $ (775,234) December 31, 2022 Amortized Fair Gross Unrealized Cost Value Gain Loss U.S. Treasury $ 1,000 $ 898 $ — $ (102) Municipal securities 687,875 624,500 321 (63,696) Mortgage-backed securities: Residential agency 6,161,358 5,814,496 13,085 (359,947) Residential non-agency 616,423 577,576 11,776 (50,623) Commercial agency 4,892,257 4,475,917 3,479 (419,819) Other debt securities 500 473 — (27) Total available for sale securities $ 12,359,413 $ 11,493,860 $ 28,661 $ (894,214) The amortized cost and fair values of available for sale securities at March 31, 2023, by contractual maturity, are as shown in the following table (dollars in thousands): Less than One to Six to Over Total Weighted Average Maturity 1 Fixed maturity debt securities: Amortized cost $ 148,742 $ 2,665,838 $ 2,360,090 $ 502,606 $ 5,677,276 5.82 Fair value 146,996 2,510,112 2,131,783 474,891 5,263,782 Residential mortgage-backed securities: Amortized cost $ 7,002,073 2 Fair value 6,674,059 Total available for sale securities: Amortized cost $ 12,679,349 Fair value 11,937,841 1 Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty. 2 The average expected lives of residential mortgage-backed securities were 4.4 years years based upon current prepayment assumptions. Sales of available for sale securities resulted in gains and losses as follows (in thousands): Three Months Ended 2023 2022 Proceeds $ — $ 55,185 Gross realized gains — 1,933 Gross realized losses — (996) Related federal and state income tax expense — 219
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]	March 31, 2023 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Available for sale: U.S. Treasury 1 $ — $ — $ 914 $ 86 $ 914 $ 86 Municipal securities 215 61,983 767 487,032 52,327 549,015 53,094 Mortgage-backed securities: Residential agency 618 1,531,016 37,020 3,240,193 267,379 4,771,209 304,399 Residential non-agency 30 230,541 8,648 343,580 41,617 574,121 50,265 Commercial agency 288 824,751 14,313 3,413,042 353,050 4,237,793 367,363 Other debt securities 1 — — 473 27 473 27 Total available for sale securities 1,153 $ 2,648,291 $ 60,748 $ 7,485,234 $ 714,486 $ 10,133,525 $ 775,234 December 31, 2022 Number of Securities Less Than 12 Months 12 Months or Longer Total Fair Unrealized Fair Unrealized Fair Unrealized Available for sale: U.S. Treasury 1 $ — $ — $ 899 $ 102 $ 899 $ 102 Municipal securities 227 146,634 5,301 428,248 58,395 574,882 63,696 Mortgage-backed securities: Residential agency 613 3,879,582 256,973 863,732 102,974 4,743,314 359,947 Residential non-agency 26 499,716 50,623 — — 499,716 50,623 Commercial agency 285 1,647,778 63,701 2,535,816 356,118 4,183,594 419,819 Other debt securities 1 — — 473 27 473 27 Total available for sale securities 1,153 $ 6,173,710 $ 376,598 $ 3,829,168 $ 517,616 $ 10,002,878 $ 894,214
Fair Value Option Securities [Table Text Block]	The fair value and net unrealized gain (loss) included in fair value option securities is as follows (in thousands): March 31, 2023 December 31, 2022 Fair Value Net Unrealized Gain (Loss) Fair Value Net Unrealized Gain (Loss) U.S. Treasury $ 106,307 $ 359 $ — $ — Residential agency mortgage-backed securities 220,083 250 296,590 338 Total $ 326,390 $ 609 $ 296,590 $ 338

Derivatives (Tables)

Derivatives (Tables)	3 Months Ended
	Mar. 31, 2023
Derivative Instrument Detail [Abstract]
Derivative Contracts [Table Text Block]	The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at March 31, 2023 (in thousands): Assets Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,691,550 $ 121,481 $ (3,303) $ 118,178 $ (98,143) $ 20,035 Energy contracts 7,456,604 988,149 (592,276) 395,873 (121,612) 274,261 Foreign exchange contracts 59,321 57,431 — 57,431 (1,560) 55,871 Equity option contracts 12,286 116 — 116 (95) 21 Total customer risk management programs 10,219,761 1,167,177 (595,579) 571,598 (221,410) 350,188 Trading 14,507,221 87,395 (45,420) 41,975 (1,439) 40,536 Internal risk management programs 165,207 5,253 (1,686) 3,567 — 3,567 Total derivative contracts $ 24,892,189 $ 1,259,825 $ (642,685) $ 617,140 $ (222,849) $ 394,291 Liabilities Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,691,550 $ 121,040 $ (3,303) $ 117,737 $ — $ 117,737 Energy contracts 7,564,737 997,077 (592,276) 404,801 (80,146) 324,655 Foreign exchange contracts 57,909 55,828 — 55,828 — 55,828 Equity option contracts 12,286 116 — 116 — 116 Total customer risk management programs 10,326,482 1,174,061 (595,579) 578,482 (80,146) 498,336 Trading 16,042,176 116,109 (45,420) 70,689 (59,941) 10,748 Internal risk management programs 135,415 3,085 (1,686) 1,399 — 1,399 Total derivative contracts $ 26,504,073 $ 1,293,255 $ (642,685) $ 650,570 $ (140,087) $ 510,483 1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract. The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at December 31, 2022 (in thousands): Assets Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,629,318 $ 158,825 $ — $ 158,825 $ (114,955) $ 43,870 Energy contracts 7,918,020 1,232,283 (594,543) 637,740 (67,024) 570,716 Foreign exchange contracts 219,791 216,569 — 216,569 — 216,569 Equity option contracts 21,102 193 — 193 (109) 84 Total customer risk management programs 10,788,231 1,607,870 (594,543) 1,013,327 (182,088) 831,239 Trading 17,400,037 126,910 (74,647) 52,263 (4,646) 47,617 Internal risk management programs 85,000 1,500 (13) 1,487 — 1,487 Total derivative contracts $ 28,273,268 $ 1,736,280 $ (669,203) $ 1,067,077 $ (186,734) $ 880,343 Liabilities Notional 1 Gross Fair Value Netting Adjustments Net Fair Value Before Cash Collateral Cash Collateral Fair Value Net of Cash Collateral Customer risk management programs: Interest rate contracts $ 2,629,122 $ 158,816 $ — $ 158,816 $ — $ 158,816 Energy contracts 8,696,060 1,242,058 (594,543) 647,515 (484,319) 163,196 Foreign exchange contracts 214,855 211,233 — 211,233 (7) 211,226 Equity option contracts 21,102 193 — 193 — 193 Total customer risk management programs 11,561,139 1,612,300 (594,543) 1,017,757 (484,326) 533,431 Trading 14,038,906 94,958 (74,647) 20,311 (423) 19,888 Internal risk management programs 178,806 1,594 (13) 1,581 — 1,581 Total derivative contracts $ 25,778,851 $ 1,708,852 $ (669,203) $ 1,039,649 $ (484,749) $ 554,900 1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
Derivative Instruments, Gain (Loss) in Statement of Earnings [Table Text Block]	The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands): Three Months Ended March 31, 2023 March 31, 2022 Brokerage Gain (Loss) on Derivatives, Net Brokerage Gain (Loss) on Derivatives, Net Customer risk management programs: Interest rate contracts $ 1,770 $ — $ 6,342 $ — Energy contracts 6,553 — 4,449 — Foreign exchange contracts 31 — 148 — Equity option contracts — — — — Total customer risk management programs 8,354 — 10,939 — Trading 1 (63,093) — 31,074 — Internal risk management programs — (1,344) — (46,981) Total derivative contracts $ (54,739) $ (1,344) $ 42,013 $ (46,981) 1 Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.

Loans and Allowances for Cred_2

Loans and Allowances for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2023
Loans and Leases Receivable, Net Amount [Abstract]
Schedule of Loans by Portfolio Segment [Table Text Block]	Portfolio segments of the loan portfolio are as follows (in thousands): March 31, 2023 December 31, 2022 Fixed Variable Non-accrual Total Fixed Variable Non-accrual Total Commercial $ 3,427,345 $ 10,735,572 $ 54,432 $ 14,217,349 $ 3,392,422 $ 10,759,780 $ 60,297 $ 14,212,499 Commercial real estate 879,806 3,913,842 21,668 4,815,316 874,716 3,715,491 16,570 4,606,777 Loans to individuals 2,125,020 1,548,173 44,195 3,717,388 2,099,165 1,593,779 44,930 3,737,874 Total $ 6,432,171 $ 16,197,587 $ 120,295 $ 22,750,053 $ 6,366,303 $ 16,069,050 $ 121,797 $ 22,557,150
Rollforward of Allowance For Loan Losses And Accrual for Off-Balance Sheet Credit Losses [Table Text Block]	The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands): Three Months Ended March 31, 2023 Commercial Commercial Real Estate Loans to Individuals Total Allowance for loan losses: Beginning balance $ 131,586 $ 57,648 $ 46,470 $ 235,704 Provision for loan losses 6,330 10,426 (2,231) 14,525 Loans charged off (12) (2,208) (1,447) (3,667) Recoveries of loans previously charged off 1,994 137 767 2,898 Ending balance $ 139,898 $ 66,003 $ 43,559 $ 249,460 Allowance for off-balance sheet credit risk from unfunded loan commitments: Beginning balance $ 18,246 $ 40,490 $ 2,183 $ 60,919 Provision for off-balance sheet credit risk 2,362 (279) (59) 2,024 Ending balance $ 20,608 $ 40,211 $ 2,124 $ 62,943 Three Months Ended March 31, 2022 Commercial Commercial Real Estate Loans to Individuals Total Allowance for loan losses: Beginning balance $ 162,056 $ 58,553 $ 35,812 $ 256,421 Provision for loan losses (5,118) 468 683 (3,967) Loans charged off (6,081) (191) (1,533) (7,805) Recoveries of loans previously charged off 591 144 1,089 1,824 Ending balance $ 151,448 $ 58,974 $ 36,051 $ 246,473 Allowance for off-balance sheet credit risk from unfunded loan commitments: Beginning balance $ 13,812 $ 17,442 $ 1,723 $ 32,977 Provision for off-balance sheet credit risk 154 3,023 91 3,268 Ending balance $ 13,966 $ 20,465 $ 1,814 $ 36,245 A $16.0 million provision for credit losses was necessary for the first quarter of 2023, as key economic assumptions in the base case, including projected WTI oil prices and commercial real estate vacancy rates, were less favorable to economic growth. The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at March 31, 2023 is as follows (in thousands): Collectively Measured Individually Measured Total Recorded Investment Related Allowance Recorded Investment Related Allowance Recorded Investment Related Commercial $ 14,162,917 $ 137,415 $ 54,432 $ 2,483 $ 14,217,349 $ 139,898 Commercial real estate 4,793,648 64,453 21,668 1,550 4,815,316 66,003 Loans to individuals 3,673,193 43,559 44,195 — 3,717,388 43,559 Total $ 22,629,758 $ 245,427 $ 120,295 $ 4,033 $ 22,750,053 $ 249,460 The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2022 is as follows (in thousands): Collectively Measured Individually Measured Total Recorded Investment Related Allowance Recorded Investment Related Allowance Recorded Investment Related Commercial $ 14,152,202 $ 127,566 $ 60,297 $ 4,020 $ 14,212,499 $ 131,586 Commercial real estate 4,590,207 56,098 16,570 1,550 4,606,777 57,648 Loans to individuals 3,692,944 46,470 44,930 — 3,737,874 46,470 Total $ 22,435,353 $ 230,134 $ 121,797 $ 5,570 $ 22,557,150 $ 235,704
Schedule of Credit Quality Indicators [Table Text Block]	The following table summarizes the Company’s loan portfolio at March 31, 2023 by the risk grade categories and vintage (in thousands): Origination Year 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial: Energy Pass $ 12,973 $ 146,448 $ 66,052 $ 8,865 $ 11,301 $ 11,408 $ 3,119,103 $ — $ 3,376,150 Accruing Substandard — — — — 658 1,060 20,062 — 21,780 Nonaccrual — — — — — 127 — — 127 Total energy 12,973 146,448 66,052 8,865 11,959 12,595 3,139,165 — 3,398,057 Loans charged-off, year-to-date — — — — — — — — — Healthcare Pass 175,703 876,440 615,643 479,575 386,837 1,027,229 220,992 19 3,782,438 Special Mention — — 204 429 21,767 45,663 60 — 68,123 Accruing Substandard — — — 2,178 1,456 7,899 — — 11,533 Nonaccrual — — — — 26,137 11,110 — — 37,247 Total healthcare 175,703 876,440 615,847 482,182 436,197 1,091,901 221,052 19 3,899,341 Loans charged-off, year-to-date — — — — — — — — — Services Pass 216,237 759,320 470,813 275,065 171,904 805,240 799,522 506 3,498,607 Special Mention — 19,077 1,365 219 672 2,521 6,246 — 30,100 Accruing Substandard — 397 86 — 2,232 2,599 21,499 84 26,897 Nonaccrual — — 5,281 376 — — 2,441 — 8,098 Total services 216,237 778,794 477,545 275,660 174,808 810,360 829,708 590 3,563,702 Loans charged-off, year-to-date — — — — — — 5 — 5 General business Pass 288,367 607,548 320,451 162,810 147,988 355,227 1,336,404 2,193 3,220,988 Special Mention — 7,515 8,200 87 70 1,762 31,903 25 49,562 Accruing Substandard 5,516 38,443 6,841 56 4,013 7,940 13,929 — 76,738 Nonaccrual — — — 1,030 14 68 7,842 7 8,961 Total general business 293,883 653,506 335,492 163,983 152,085 364,997 1,390,078 2,225 3,356,249 Loans charged-off, year-to-date — — — — — 3 — 4 7 Total commercial 698,796 2,455,188 1,494,936 930,690 775,049 2,279,853 5,580,003 2,834 14,217,349 Origination Year 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial real estate: Pass 46,900 1,383,300 1,187,644 540,129 644,511 832,101 148,063 — 4,782,648 Special Mention — — — — — 11,000 — — 11,000 Nonaccrual — — — — 7,459 14,209 — — 21,668 Total commercial real estate 46,900 1,383,300 1,187,644 540,129 651,970 857,310 148,063 — 4,815,316 Loans charged-off, year-to-date — — — — — 2,208 — — 2,208 Loans to individuals: Residential mortgage Pass 71,000 348,697 371,044 380,908 61,409 285,877 351,428 21,242 1,891,605 Special Mention — 68 — 1,355 — 309 2,843 — 4,575 Accruing Substandard — — — — — 7 147 — 154 Nonaccrual — 1,184 1,738 2,851 649 20,547 1,994 730 29,693 Total residential mortgage 71,000 349,949 372,782 385,114 62,058 306,740 356,412 21,972 1,926,027 Loans charged-off, year-to-date — — — — — 4 — 1 5 Residential mortgage guaranteed by U.S. government agencies Pass — 1,021 2,321 7,321 8,963 190,825 — — 210,451 Nonaccrual — — — 299 1,005 12,998 — — 14,302 Total residential mortgage guaranteed by U.S. government agencies — 1,021 2,321 7,620 9,968 203,823 — — 224,753 Personal: Pass 24,231 236,041 190,370 156,515 181,332 220,604 550,478 253 1,559,824 Special Mention — 115 109 47 2 — 6,055 39 6,367 Accruing Substandard — 17 40 — 160 — — — 217 Nonaccrual — 69 5 10 19 19 78 — 200 Total personal 24,231 236,242 190,524 156,572 181,513 220,623 556,611 292 1,566,608 Loans charged-off, year-to-date — — — — — 1,437 1 4 1,442 Total loans to individuals 95,231 587,212 565,627 549,306 253,539 731,186 913,023 22,264 3,717,388 Total loans $ 840,927 $ 4,425,700 $ 3,248,207 $ 2,020,125 $ 1,680,558 $ 3,868,349 $ 6,641,089 $ 25,098 $ 22,750,053 The following table summarizes the Company's loan portfolio at December 31, 2022 by the risk grade categories and vintage (in thousands): Origination Year 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial: Energy Pass $ 157,745 $ 76,951 $ 30,284 $ 12,783 $ 5,992 $ 4,980 $ 3,104,906 $ — $ 3,393,641 Special Mention — — — — — — — — — Accruing Substandard — — — 664 385 683 28,018 — 29,750 Nonaccrual — — — — — 159 1,240 — 1,399 Total energy 157,745 76,951 30,284 13,447 6,377 5,822 3,134,164 — 3,424,790 Healthcare Pass 932,097 604,886 476,854 404,204 464,989 618,163 245,898 20 3,747,111 Special Mention — — — 20,071 — 18,859 4 — 38,934 Accruing Substandard — — — — — 14,304 3,634 — 17,938 Nonaccrual — — — 26,480 6,373 8,181 — — 41,034 Total healthcare 932,097 604,886 476,854 450,755 471,362 659,507 249,536 20 3,845,017 Services Pass 821,785 496,510 286,085 193,481 156,736 696,300 722,371 639 3,373,907 Special Mention 502 5,139 989 771 894 1,345 8,668 — 18,308 Accruing Substandard — — — 2,459 43 2,789 17,665 122 23,078 Nonaccrual — 5,570 449 — — 2,389 7,820 — 16,228 Total services 822,287 507,219 287,523 196,711 157,673 702,823 756,524 761 3,431,521 General business Pass 725,894 361,839 198,274 172,878 139,140 283,694 1,570,536 2,329 3,454,584 Special Mention 17,759 13,065 208 71 7 2,291 7,094 26 40,521 Accruing Substandard — 2,169 66 4,130 4,680 3,287 94 4 14,430 Nonaccrual — — 1,052 14 72 5 485 8 1,636 Total general business 743,653 377,073 199,600 177,093 143,899 289,277 1,578,209 2,367 3,511,171 Total commercial 2,655,782 1,566,129 994,261 838,006 779,311 1,657,429 5,718,433 3,148 14,212,499 Commercial real estate: Pass 1,188,483 1,158,002 552,616 641,102 247,625 633,304 161,616 — 4,582,748 Special Mention — — — — — — — — — Accruing Substandard — — — 7,459 — — — — 7,459 Nonaccrual — — — — — 16,570 — — 16,570 Total commercial real estate 1,188,483 1,158,002 552,616 648,561 247,625 649,874 161,616 — 4,606,777 Origination Year 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Loans to individuals: Residential mortgage Pass 354,497 373,190 393,002 63,142 40,525 260,625 352,126 22,176 1,859,283 Special Mention — 81 42 — 142 388 527 87 1,267 Accruing Substandard — — 187 — — 138 117 1 443 Nonaccrual 32 1,656 2,717 362 1,904 20,139 2,216 765 29,791 Total residential mortgage 354,529 374,927 395,948 63,504 42,571 281,290 354,986 23,029 1,890,784 Residential mortgage guaranteed by U.S. government agencies Pass 289 2,254 9,000 10,722 17,244 191,426 — — 230,935 Nonaccrual — — 299 1,460 2,319 10,927 — — 15,005 Total residential mortgage guaranteed by U.S. government agencies 289 2,254 9,299 12,182 19,563 202,353 — — 245,940 Personal: Pass 254,497 193,095 154,887 172,114 68,871 201,278 549,187 332 1,594,261 Special Mention 47 28 40 12 17 — 6,003 4 6,151 Accruing Substandard — 444 — 160 — — — — 604 Nonaccrual 38 7 12 22 14 18 23 — 134 Total personal 254,582 193,574 154,939 172,308 68,902 201,296 555,213 336 1,601,150 Total loans to individuals 609,400 570,755 560,186 247,994 131,036 684,939 910,199 23,365 3,737,874 Total loans $ 4,453,665 $ 3,294,886 $ 2,107,063 $ 1,734,561 $ 1,157,972 $ 2,992,242 $ 6,790,248 $ 26,513 $ 22,557,150
Financing Receivable, Nonaccrual [Table Text Block]	A summary of nonaccruing loans at March 31, 2023 follows (in thousands): As of March 31, 2023 Total With No With Allowance Related Allowance Commercial: Energy $ 127 $ 127 $ — $ — Healthcare 37,247 37,247 — — Services 8,097 387 7,710 2,483 General business 8,961 8,961 — — Total commercial 54,432 46,722 7,710 2,483 Commercial real estate 21,668 7,628 14,040 1,550 Loans to individuals: Residential mortgage 29,693 29,693 — — Residential mortgage guaranteed by U.S. government agencies 14,302 14,302 — — Personal 200 200 — — Total loans to individuals 44,195 44,195 — — Total $ 120,295 $ 98,545 $ 21,750 $ 4,033 A summary of nonaccruing loans at December 31, 2022 follows (in thousands): As of December 31, 2022 Total With No With Allowance Related Allowance Commercial: Energy $ 1,399 $ 1,399 $ — $ — Healthcare 41,034 34,661 6,373 946 Services 16,228 7,835 8,393 3,074 General business 1,636 1,636 — — Total commercial 60,297 45,531 14,766 4,020 Commercial real estate 16,570 393 16,177 1,550 Loans to individuals: Residential mortgage 29,791 29,791 — — Residential mortgage guaranteed by U.S. government agencies 15,005 15,005 — — Personal 134 134 — — Total loans to individuals 44,930 44,930 — — Total $ 121,797 $ 90,854 $ 30,943 $ 5,570
Summary of Loans by Aging Status [Table Text Block]	A summary of loans currently performing and past due as of March 31, 2023 is as follows (in thousands): Past Due Past Due 90 Days or More and Accruing Current 30 to 59 60 to 89 Days 90 Days Total Commercial: Energy $ 3,398,057 $ — $ — $ — $ 3,398,057 $ — Healthcare 3,866,921 — — 32,420 3,899,341 45 Services 3,556,753 6,844 45 60 3,563,702 — General business 3,355,731 492 17 9 3,356,249 9 Total commercial 14,177,462 7,336 62 32,489 14,217,349 54 Commercial real estate 4,806,306 8,965 45 — 4,815,316 — Loans to individuals: Residential mortgage 1,910,799 8,315 363 6,550 1,926,027 22 Residential mortgage guaranteed by U.S. government agencies 103,992 48,833 — 71,928 224,753 64,980 Personal 1,565,875 567 143 23 1,566,608 — Total loans to individuals 3,580,666 57,715 506 78,501 3,717,388 65,002 Total $ 22,564,434 $ 74,016 $ 613 $ 110,990 $ 22,750,053 $ 65,056 A summary of loans currently performing and past due as of December 31, 2022 is as follows (in thousands): Past Due Past Due 90 Days or More and Accruing Current 30 to 59 60 to 89 Days 90 Days Total Commercial: Energy $ 3,424,766 $ 24 $ — $ — $ 3,424,790 $ — Healthcare 3,812,164 5,914 26,480 459 3,845,017 — Services 3,423,042 1,060 2,461 4,958 3,431,521 — General business 3,509,094 257 1,424 396 3,511,171 396 Total commercial 14,169,066 7,255 30,365 5,813 14,212,499 396 Commercial real estate 4,606,029 531 — 217 4,606,777 — Loans to individuals: Residential mortgage 1,872,155 10,632 1,828 6,169 1,890,784 114 Residential mortgage guaranteed by U.S. government agencies 108,019 36,119 19,400 82,402 245,940 75,604 Personal 1,600,595 502 21 32 1,601,150 — Total loans to individuals 3,580,769 47,253 21,249 88,603 3,737,874 75,718 Total $ 22,355,864 $ 55,039 $ 51,614 $ 94,633 $ 22,557,150 $ 76,114

Mortgage Banking Activities (Ta

Mortgage Banking Activities (Tables)	3 Months Ended
	Mar. 31, 2023
Mortgage Banking [Abstract]
Components of Residential Mortgage Loans Held For Sale [Table Text Block]	March 31, 2023 December 31, 2022 Unpaid Principal Balance/ Fair Value Unpaid Principal Balance/ Fair Value Residential mortgage loans held for sale $ 72,746 $ 72,113 $ 74,941 $ 73,938 Residential mortgage loan commitments 71,693 2,694 45,492 1,054 Forward sales contracts 127,427 (632) 109,469 280 $ 74,175 $ 75,272
Mortgage Banking Revenue [Table Text Block]	Mortgage banking revenue was as follows (in thousands): Three Months Ended 2023 2022 Production revenue: Net realized gains (losses) on sale of mortgage loans $ (1,731) $ 6,883 Net change in unrealized gain (loss) on mortgage loans held for sale 370 (5,827) Net change in the fair value of mortgage loan commitments 1,640 (3,298) Net change in the fair value of forward sales contracts (912) 7,297 Total production revenue (633) 5,055 Servicing revenue 15,000 11,595 Total mortgage banking revenue $ 14,367 $ 16,650
Summary of Mortgage Servicing Rights [Table Text Block]	The following represents a summary of mortgage servicing rights (dollars in thousands): March 31, 2023 December 31, 2022 Number of residential mortgage loans serviced for others 118,303 110,541 Outstanding principal balance of residential mortgage loans serviced for others $ 21,009,762 $ 18,863,201 Weighted average interest rate 3.55 % 3.59 % Remaining term (in months) 285 283
Activity in Capitalized Mortgage Servicing Rights [Table Text Block]	The following represents activity in capitalized mortgage servicing rights (in thousands) Three Months Ended March 31, 2023 2022 Beginning Balance $ 277,608 $ 163,198 Additions 2,500 5,215 Acquisitions 31,138 — Change in fair value due to principal payments (5,384) (7,960) Change in fair value due to market assumption changes (6,059) 49,110 Ending Balance $ 299,803 $ 209,563
Assumptions to Value Mortgage Servicing Rights [Table Text Block]	Mortgage servicing rights are not traded in active markets. Fair value is determined by discounting the projected net cash flows. Significant market assumptions used to determine fair value based on significant unobservable inputs were as follows: March 31, 2023 December 31, 2022 Discount rate – risk-free rate plus a market premium 8.95% 9.51% Prepayment rate - based upon loan interest rate, original term and loan type 7.43% 7.54% Loan servicing costs – annually per loan based upon loan type: Performing loans $69 - $94 $69 - $94 Delinquent loans $150 - $500 $150 - $500 Loans in foreclosure $875 - $8,000 $875 - $8,000 Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life 3.66% 4.06% Primary/secondary mortgage rate spread 105 bps 105 bps Delinquency rate 1.40% 2.33%

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2023
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Income (Loss) [Table Text Block]	A rollforward of the components of accumulated other comprehensive income (loss) is included as follows (in thousands): Unrealized Gain (Loss) on Available for Sale Securities Investment Securities Transferred from AFS Employee Benefit Plans Total Balance, Dec. 31, 2021 $ 69,775 $ — $ 2,596 $ 72,371 Net change in unrealized gain (loss) (639,041) — — (639,041) Reclassification adjustments included in earnings: Gain on available for sale securities, net (937) — — (937) Other comprehensive loss, before income taxes (639,978) — — (639,978) Federal and state income taxes (149,781) — — (149,781) Other comprehensive loss, net of income taxes (490,197) — — (490,197) Balance, March 31, 2022 $ (420,422) $ — $ 2,596 $ (417,826) Balance, Dec. 31, 2022 $ (664,618) $ (172,337) $ — $ (836,955) Net change in unrealized gain (loss) 124,045 — — 124,045 Interest revenue, Investment securities — 16,051 — 16,051 Other comprehensive loss, before income taxes 124,045 16,051 — 140,096 Federal and state income taxes 28,179 3,516 — 31,695 Other comprehensive income, net of income taxes 95,866 12,535 — 108,401 Balance, March 31, 2023 $ (568,752) $ (159,802) $ — $ (728,554)

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share [Abstract]
Earnings Per Share [Table Text Block]	(In thousands, except share and per share amounts) Three Months Ended March 31, 2023 2022 Numerator: Net income attributable to BOK Financial Corp. shareholders $ 162,368 $ 62,488 Less: Earnings allocated to participating securities 1,255 451 Numerator for basic earnings per share – income available to common shareholders 161,113 62,037 Effect of reallocating undistributed earnings of participating securities — — Numerator for diluted earnings per share – income available to common shareholders $ 161,113 $ 62,037 Denominator: Weighted average shares outstanding 66,849,288 68,306,107 Less: Participating securities included in weighted average shares outstanding 517,513 493,707 Denominator for basic earnings per common share 66,331,775 67,812,400 Dilutive effect of employee stock compensation plans — 1,451 Denominator for diluted earnings per common share 66,331,775 67,813,851 Basic earnings per share $ 2.43 $ 0.91 Diluted earnings per share $ 2.43 $ 0.91

Reportable Segments (Tables)

Reportable Segments (Tables)	3 Months Ended
	Mar. 31, 2023
Segment Reporting [Abstract]
Reportable Segments [Table Text Block]	Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended March 31, 2023 is as follows (in thousands): Commercial Consumer Wealth Funds Management and Other BOK Net interest revenue from external sources $ 287,646 $ 21,146 $ 20,940 $ 22,616 $ 352,348 Net interest revenue (expense) from internal sources (21,101) 88,235 33,166 (100,300) — Net interest revenue (expense) 266,545 109,381 54,106 (77,684) 352,348 Net loans charged off and provision for credit losses 76 1,184 (24) 14,764 16,000 Net interest revenue after provision for credit losses 266,469 108,197 54,130 (92,448) 336,348 Other operating revenue 56,845 30,610 108,911 (18,501) 177,865 Other operating expense 73,504 50,198 82,039 100,071 305,812 Net direct contribution 249,810 88,609 81,002 (211,020) 208,401 Gain (loss) on financial instruments, net (58) (4,673) — 4,731 — Change in fair value of mortgage servicing rights — (6,059) — 6,059 — Gain (loss) on repossessed assets, net 859 14 — (873) — Corporate expense allocations 17,729 11,618 12,386 (41,733) — Net income (loss) before taxes 232,882 66,273 68,616 (159,370) 208,401 Federal and state income taxes 56,335 15,586 16,189 (42,205) 45,905 Net income (loss) 176,547 50,687 52,427 (117,165) 162,496 Net income attributable to non-controlling interests — — — 128 128 Net income (loss) attributable to BOK Financial Corp. shareholders $ 176,547 $ 50,687 $ 52,427 $ (117,293) $ 162,368 Average assets $ 28,162,934 $ 9,934,511 $ 11,663,096 $ (3,778,073) $ 45,982,468 Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended March 31, 2022 is as follows (in thousands): Commercial Consumer Wealth Funds Management and Other BOK Net interest revenue from external sources $ 147,590 $ 16,915 $ 56,231 $ 47,675 $ 268,411 Net interest revenue (expense) from internal sources (10,579) 10,292 (465) 752 — Net interest revenue 137,011 27,207 55,766 48,427 268,411 Net loans charged off and provision for credit losses 5,343 1,112 (71) (6,384) — Net interest revenue after provision for credit losses 131,668 26,095 55,837 54,811 268,411 Other operating revenue 57,427 33,961 25,018 (28,550) 87,856 Other operating expense 65,114 48,789 74,620 89,095 277,618 Net direct contribution 123,981 11,267 6,235 (62,834) 78,649 Gain (loss) on financial instruments, net (204) (57,895) — 58,099 — Change in fair value of mortgage servicing rights — 49,110 — (49,110) — Gain (loss) on repossessed assets, net 1,793 45 — (1,838) — Corporate expense allocations 16,246 12,080 12,071 (40,397) — Net income before taxes 109,324 (9,553) (5,836) (15,286) 78,649 Federal and state income taxes 26,980 (2,236) (1,315) (7,232) 16,197 Net income 82,344 (7,317) (4,521) (8,054) 62,452 Net loss attributable to non-controlling interests — — — (36) (36) Net income attributable to BOK Financial Corp. shareholders $ 82,344 $ (7,317) $ (4,521) $ (8,018) $ 62,488 Average assets $ 29,823,905 $ 10,273,890 $ 21,323,795 $ (10,860,516) $ 50,561,074

Fees and Commissions Revenue _2

Fees and Commissions Revenue Fees and Commissions Rvenue (Tables)	3 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Disaggregation of Fees and Commissions Revenue [Table Text Block]	Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended March 31, 2023. Commercial Consumer Wealth Management Funds Management & Other Consolidated Out of Scope 1 In Scope 2 Trading revenue $ — $ — $ 27,598 $ — $ 27,598 $ 27,598 $ — Customer hedging revenue 6,487 — 100 1,767 8,354 8,354 — Retail brokerage revenue — — 3,844 — 3,844 — 3,844 Insurance brokerage revenue — — 3,306 — 3,306 — 3,306 Investment banking revenue 3,698 — 5,596 — 9,294 3,598 5,696 Brokerage and trading revenue 10,185 — 40,444 1,767 52,396 39,550 12,846 TransFund EFT network revenue 20,499 908 (17) 2 21,392 — 21,392 Merchant services revenue 2,150 8 — — 2,158 — 2,158 Corporate card revenue 1,785 — 177 109 2,071 — 2,071 Transaction card revenue 24,434 916 160 111 25,621 — 25,621 Personal trust revenue — — 23,945 — 23,945 — 23,945 Corporate trust revenue — — 7,660 — 7,660 — 7,660 Institutional trust & retirement plan services revenue — — 12,835 — 12,835 — 12,835 Investment management services and other revenue — — 6,238 (21) 6,217 — 6,217 Fiduciary and asset management revenue — — 50,678 (21) 50,657 — 50,657 Commercial account service charge revenue 12,871 499 477 — 13,847 — 13,847 Overdraft fee revenue 25 4,828 20 — 4,873 — 4,873 Check card revenue — 5,638 — 1 5,639 — 5,639 Automated service charge and other deposit fee revenue 237 1,313 59 — 1,609 — 1,609 Deposit service charges and fees 13,133 12,278 556 1 25,968 — 25,968 Mortgage production revenue — (633) — — (633) (633) — Mortgage servicing revenue — 15,558 — (558) 15,000 15,000 — Mortgage banking revenue — 14,925 — (558) 14,367 14,367 — Other revenue 8,083 2,462 17,073 (10,648) 16,970 8,560 8,410 Total fees and commissions revenue $ 55,835 $ 30,581 $ 108,911 $ (9,348) $ 185,979 $ 62,477 $ 123,502 1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended March 31, 2022. Commercial Consumer Wealth Management Funds Management & Other Consolidated Out of Scope 1 In Scope 2 Trading revenue $ — $ — $ (54,048) $ — $ (54,048) $ (54,048) $ — Customer hedging revenue 12,979 — 817 (2,858) 10,938 10,938 — Retail brokerage revenue — — 4,610 — 4,610 — 4,610 Insurance brokerage revenue — — 3,738 — 3,738 — 3,738 Investment banking revenue 3,358 — 4,325 — 7,683 3,099 4,584 Brokerage and trading revenue 16,337 — (40,558) (2,858) (27,079) (40,011) 12,932 TransFund EFT network revenue 18,153 886 (17) 1 19,023 — 19,023 Merchant services revenue 3,641 10 — — 3,651 — 3,651 Corporate card revenue 1,376 — 76 90 1,542 — 1,542 Transaction card revenue 23,170 896 59 91 24,216 — 24,216 Personal trust revenue — — 24,797 — 24,797 — 24,797 Corporate trust revenue — — 3,958 — 3,958 — 3,958 Institutional trust & retirement plan services revenue — — 12,567 — 12,567 — 12,567 Investment management services and other revenue — — 5,121 (44) 5,077 — 5,077 Fiduciary and asset management revenue — — 46,443 (44) 46,399 — 46,399 Commercial account service charge revenue 13,131 450 513 — 14,094 — 14,094 Overdraft fee revenue 31 6,193 23 — 6,247 — 6,247 Check card revenue — 5,545 — — 5,545 — 5,545 Automated service charge and other deposit fee revenue 23 1,107 (14) 2 1,118 — 1,118 Deposit service charges and fees 13,185 13,295 522 2 27,004 — 27,004 Mortgage production revenue — 5,055 — — 5,055 5,055 — Mortgage servicing revenue — 12,076 — (481) 11,595 11,595 — Mortgage banking revenue — 17,131 — (481) 16,650 16,650 — Other revenue 4,272 2,655 18,557 (15,039) 10,445 7,275 3,170 Total fees and commissions revenue $ 56,964 $ 33,977 $ 25,023 $ (18,329) $ 97,635 $ (16,086) $ 113,721 1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value Assets And Liabilities Measured On A Recurring Basis [Table Text Block]	The fair value of financial assets and liabilities measured on a recurring basis was as follows as of March 31, 2023 (in thousands): Total Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs Assets: Trading securities: U.S. government securities $ 5,618 $ 4,878 $ 740 $ — Residential agency mortgage-backed securities 2,210,721 — 2,210,721 — Municipal securities 37,455 — 37,455 — Asset-backed securities 10,194 — 10,194 — Other trading securities 30,370 — 30,370 — Total trading securities 2,294,358 4,878 2,289,480 — Available for sale securities: U.S. Treasury 914 914 — — Municipal securities 634,207 — 634,207 — Residential agency mortgage-backed securities 6,022,708 — 6,022,708 — Residential non-agency mortgage-backed securities 651,351 — 651,351 — Commercial agency mortgage-backed securities 4,628,188 — 4,628,188 — Other debt securities 473 — — 473 Total available for sale securities 11,937,841 914 11,936,454 473 Fair value option securities: U.S. Treasury 106,307 106,307 — — Residential agency mortgage-backed securities 220,083 — 220,083 — Total fair value option securities 326,390 106,307 220,083 — Residential mortgage loans held for sale 1 74,175 — 67,024 7,151 Mortgage servicing rights 2 299,803 — — 299,803 Derivative contracts, net of cash collateral 3 394,291 303 393,988 — Liabilities: Derivative contracts, net of cash collateral 3 510,483 3,822 506,661 — 1 Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.43% of the unpaid principal balance. 2 A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3 See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes . The fair value of financial assets and liabilities measured on a recurring basis was as follows as of December 31, 2022 (in thousands): Total Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs Assets: Trading securities: U.S. government securities $ 9,823 $ 4,970 $ 4,853 $ — Residential agency mortgage-backed securities 4,406,848 — 4,406,848 — Municipal securities 21,484 — 21,484 — Other trading securities 26,006 — 26,006 — Total trading securities 4,464,161 4,970 4,459,191 — Available for sale securities: U.S. Treasury 898 898 — — Municipal securities 624,500 — 624,500 — Residential agency mortgage-backed securities 5,814,496 — 5,814,496 — Residential non-agency mortgage-backed securities 577,576 — 577,576 — Commercial agency mortgage-backed securities 4,475,917 — 4,475,917 — Other debt securities 473 — — 473 Total available for sale securities 11,493,860 898 11,492,489 473 Fair value option securities — Residential agency mortgage-backed securities 296,590 — 296,590 — Residential mortgage loans held for sale 1 75,272 — 68,054 7,218 Mortgage servicing rights 2 277,608 — — 277,608 Derivative contracts, net of cash collateral 3 880,343 2,110 878,233 — Liabilities: Derivative contracts, net of cash collateral 3 554,900 16 554,884 — 1 Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.55% of the unpaid principal balance. 2 A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3 See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes.
Fair Value Assets Measured on Nonrecurring Basis [Table Text Block]	The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at March 31, 2023 for which the fair value was adjusted during the three months ended March 31, 2023: Fair Value Adjustments for the Carrying Value at March 31, 2023 Three Months Ended Quoted Prices Significant Significant Gross charge-offs against allowance for loan losses Other gains (losses), net Nonaccruing loans $ — $ — $ 14,040 $ 1,991 $ — Real estate and other repossessed assets — 547 — — (101) The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at March 31, 2022 for which the fair value was adjusted during the three months ended March 31, 2022: Fair Value Adjustments for the Carrying Value at March 31, 2022 Three Months Ended Quoted Prices Significant Significant Gross charge-offs against allowance for loan losses Other gains (losses), net Nonaccruing loans $ — $ 4,168 $ 244 $ 818 $ — Real estate and other repossessed assets — 1,412 400 — 106
Fair Value Inputs, Fair Value Measured On a Nonrecurring Basis, Quantitative Information [Table Text Block]	A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of March 31, 2023 follows (in thousands): Fair Value Valuation Technique(s) Unobservable Input Range Nonaccruing loans $ 14,040 Discounted cash flows Management knowledge of industry and non-real estate collateral including, but not limited to, recoverable oil and gas reserves, forward-looking commodity prices, estimated operating costs 88% - 88% (88%) 1 1 Represents fair value as a percentage of the unpaid principal balance. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of March 31, 2022 follows (in thousands): Fair Value Valuation Technique(s) Unobservable Input Range Nonaccruing loans $ 244 Discounted cash flows Management knowledge of industry and non-real estate collateral including, but not limited to, recoverable oil and gas reserves, forward-looking commodity prices, estimated operating costs 3% - 25% (5%) 1 Real estate and other repossessed assets 400 Discounted cash flows Marketability adjustments off appraised value. 2 75% - 75% (75%) 1 Represents fair value as a percentage of the unpaid principal balance. 2 Marketability adjustments include consideration of estimated costs to sell which is approximately 10% of the fair value.
Fair Value of Financial Instruments [Table Text Block]	The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or are measured at fair value on a non-recurring basis as of March 31, 2023 (dollars in thousands): Carrying Estimated Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs Cash and due from banks $ 792,371 $ 792,371 $ 792,371 $ — $ — Interest-bearing cash and cash equivalents 571,613 571,613 571,613 — — Trading securities: U.S. government securities 5,618 5,618 4,878 740 — Residential agency mortgage-backed securities 2,210,721 2,210,721 — 2,210,721 — Municipal securities 37,455 37,455 — 37,455 — Asset-backed securities 10,194 10,194 — 10,194 — Other trading securities 30,370 30,370 — 30,370 — Total trading securities 2,294,358 2,294,358 4,878 2,289,480 — Investment securities: Municipal securities 153,739 160,866 — 33,158 127,708 Residential agency mortgage-backed securities 2,264,922 2,118,538 — 2,118,538 — Commercial agency mortgage-backed securities 15,684 14,861 — 14,861 — Other debt securities 14,288 13,421 — 13,421 — Total investment securities 2,448,633 2,307,686 — 2,179,978 127,708 Allowance for credit losses (497) — — — — Investment securities, net of allowance 2,448,136 2,307,686 — 2,179,978 127,708 Available for sale securities: U.S. Treasury 914 914 914 — — Municipal securities 634,207 634,207 — 634,207 — Residential agency mortgage-backed securities 6,022,708 6,022,708 — 6,022,708 — Residential non-agency mortgage-backed securities 651,351 651,351 — 651,351 — Commercial agency mortgage-backed securities 4,628,188 4,628,188 — 4,628,188 — Other debt securities 473 473 — — 473 Total available for sale securities 11,937,841 11,937,841 914 11,936,454 473 Fair value option securities: U.S. Treasury 106,307 106,307 106,307 — — Residential agency mortgage-backed securities 220,083 220,083 — 220,083 — Total fair value option securities 326,390 326,390 106,307 220,083 — Residential mortgage loans held for sale 74,175 74,175 — 67,024 7,151 Loans: Commercial 14,217,349 14,129,311 — — 14,129,311 Commercial real estate 4,815,316 4,703,787 — — 4,703,787 Loans to individuals 3,717,388 3,547,326 — — 3,547,326 Total loans 22,750,053 22,380,424 — — 22,380,424 Allowance for loan losses (249,460) — — — — Loans, net of allowance 22,500,593 22,380,424 — — 22,380,424 Mortgage servicing rights 299,803 299,803 — — 299,803 Derivative instruments with positive fair value, net of cash collateral 394,291 394,291 303 393,988 — Deposits with no stated maturity 31,004,137 31,004,137 — — 31,004,137 Time deposits 1,576,610 1,547,154 — — 1,547,154 Other borrowed funds 6,335,609 6,333,599 — — 6,333,599 Subordinated debentures 131,148 125,077 — 125,077 — Derivative instruments with negative fair value, net of cash collateral 510,483 510,483 3,822 506,661 — The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or are measured at fair value on a non-recurring basis as of December 31, 2022 (dollars in thousands): Carrying Estimated Quoted Prices in Active Markets for Identical Instruments (Level 1) Significant Other Observable Inputs Significant Unobservable Inputs Cash and due from banks $ 943,810 $ 943,810 $ 943,810 $ — $ — Interest-bearing cash and cash equivalents 457,906 457,906 457,906 — — Trading securities: U.S. government securities 9,823 9,823 4,970 4,853 — Residential agency mortgage-backed securities 4,406,848 4,406,848 — 4,406,848 — Municipal securities 21,484 21,484 — 21,484 — Other trading securities 26,006 26,006 — 26,006 — Total trading securities 4,464,161 4,464,161 4,970 4,459,191 — Investment securities: Municipal securities 170,629 176,621 — 38,106 138,515 Residential agency mortgage-backed securities 2,315,219 2,143,360 — 2,143,360 — Commercial agency mortgage-backed securities 15,609 14,588 — 14,588 — Other debt securities 12,788 12,199 — 12,199 — Total investment securities 2,514,245 2,346,768 — 2,208,253 138,515 Allowance for credit losses (558) — — — — Investment securities, net of allowance 2,513,687 2,346,768 — 2,208,253 138,515 Available for sale securities: U.S. Treasury 898 898 898 — — Municipal securities 624,500 624,500 — 624,500 — Residential agency mortgage-backed securities 5,814,496 5,814,496 — 5,814,496 — Residential non-agency mortgage-backed securities 577,576 577,576 — 577,576 — Commercial agency mortgage-backed securities 4,475,917 4,475,917 — 4,475,917 — Other debt securities 473 473 — — 473 Total available for sale securities 11,493,860 11,493,860 898 11,492,489 473 Fair value option securities — Residential agency mortgage-backed securities 296,590 296,590 — 296,590 — Residential mortgage loans held for sale 75,272 75,272 — 68,054 7,218 Loans: Commercial 14,212,499 13,905,765 — — 13,905,765 Commercial real estate 4,606,777 4,454,048 — — 4,454,048 Loans to individuals 3,737,874 3,531,410 — — 3,531,410 Total loans 22,557,150 21,891,223 — — 21,891,223 Allowance for loan losses (235,704) — — — — Loans, net of allowance 22,321,446 21,891,223 — — 21,891,223 Mortgage servicing rights 277,608 277,608 — — 277,608 Derivative instruments with positive fair value, net of cash collateral 880,343 880,343 2,110 878,233 — Deposits with no stated maturity 33,018,863 33,018,863 — — 33,018,863 Time deposits 1,461,842 1,431,245 — — 1,431,245 Other borrowed funds 7,007,285 7,005,305 — — 7,005,305 Subordinated debentures 131,205 121,497 — 121,497 — Derivative instruments with negative fair value, net of cash collateral 554,900 554,900 16 554,884 —

Significant Accounting Polici_3

Significant Accounting Policies Loans and Allowance for Credit Losses (Details)	3 Months Ended
	Mar. 31, 2023
Loans and Allowance for Credit Losses [Abstract]
Loans, Number of Days Past Due for a Non-Risk Graded Loan to be Placed on Nonaccruing Status	90 days
Loans, Number of Days After Notification of Chapter 7 Bankruptcy Non-Risk Graded Loan is Placed on Nonaccruing Status	60 days
Loans and Allowances for Credit Losses, Minimum No of Days After Which Past Due Non-Risk Graded Loans Are Charged Off	60 days
Loans and Allowances for Credit Losses, Maximum No of Days After Which Past Due Non-Risk Graded Loans Are Charged Off	180 days
Loans, Number of Days After Notification of Chapter 7 Bankruptcy Non-Risk Graded Loan is Charged Off	60 days

Trading Securities (Details)

Trading Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Trading Securities [Line Items]
Trading securities	$ 2,294,358	$ 4,464,161
Trading Securities, Net Unrealized Gain (Loss)	12,566	(323)
U.S. government securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	5,618	9,823
Trading Securities, Net Unrealized Gain (Loss)	(6)	(16)
Residential agency mortgage-backed securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	2,210,721	4,406,848
Trading Securities, Net Unrealized Gain (Loss)	12,289	4
Municipal securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	37,455	21,484
Trading Securities, Net Unrealized Gain (Loss)	45	(136)
Asset-backed securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	10,194	0
Trading Securities, Net Unrealized Gain (Loss)	10	0
Other trading securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	30,370	26,006
Trading Securities, Net Unrealized Gain (Loss)	$ 228	$ (175)

Investment (Held-to-Maturity) S

Investment (Held-to-Maturity) Securities (Details) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		$ 2,657,577		$ 2,739,241
Investment Securities, Gross Carrying Value		2,448,633	[1]	2,514,245	[2]
Investment securities, Allowance for Credit Loss		(497)	[1]	(558)	[2]
Investment Securities, Amortized Cost, After Allowance for Credit Loss		2,657,080		2,738,683
Investment Securities, Carrying Value, after Allowance for Credit Loss		2,448,136	[1]	2,513,687	[2]
Investment Securities, Fair Value		2,307,686		2,346,768
Investment Securities, Gross Unrealized Gain		7,484		6,611
Investment Securities, Gross Unrealized Loss		(148,431)		(174,088)
Debt Securities, Net Unrealized Loss Remaining in AOCI included in Carrying Value for AFS Securities Transferred to Investment Securities		$ (209,000)		$ (225,000)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		130		143
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 2,139,747		$ 2,184,167
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		8,448		801
Investment Securities, Continuous Unrealized Loss Position, Fair Value		2,148,195		2,184,968
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		148,134		174,012
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		297		76
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		148,431		174,088
Fixed Maturity Securities [Member]
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
Investment Securities, Debt Maturities, Less than One Year, Net Carrying Value		24,634
Investment Securities, Debt Maturities, One to Five Years, Net Carrying Value		92,723
Investment Securities, Debt Maturities, Six to Ten Years, Net Carrying Value		66,341
Investment Securities, Debt Maturities, Over Ten Years, Net Carrying Value		13
Investment Securities, Debt Maturities, Single Maturity Date, Net Carrying Value		183,711
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
Investment Securities, Debt Maturities, Less Than One Year, Fair Value		24,917
Investment Securities, Debt Maturities, One to Five Years, Fair Value		99,241
Investment Securities, Debt Maturities, Six to Ten Years, Fair Value		64,977
Investment Securities, Debt Maturities, Over Ten Years, Fair Value		13
Investment Securities, Debt Maturities, Single Maturity Date, Fair Value		$ 189,148
Investment Securities, Debt Maturities, Weighted Average Maturity	[3]	3.94
Municipal securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		$ 153,739		170,629
Investment Securities, Gross Carrying Value		153,739	[1]	170,629	[2]
Investment Securities, Fair Value		160,866		176,621
Investment Securities, Gross Unrealized Gain		7,321		6,456
Investment Securities, Gross Unrealized Loss		$ (194)		$ (464)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		9		22
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0		$ 18,037
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		6,594		544
Investment Securities, Continuous Unrealized Loss Position, Fair Value		6,594		18,581
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0		406
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		194		58
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		194		464
Residential agency mortgage-backed securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		2,472,291		2,538,565
Investment Securities, Gross Carrying Value		2,264,922	[1]	2,315,219	[2]
Investment Securities, Fair Value		2,118,538		2,143,360
Investment Securities, Gross Unrealized Gain		163		155
Investment Securities, Gross Unrealized Loss		(146,547)		$ (172,014)
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
Investment Securities, Debt Maturities, without Single Maturity Date, Net Carrying Value	[4]	2,264,922
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
Investment Securities, Debt Maturities, without Single Maturity Date, Fair Value		$ 2,118,538
Investment Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities		5 years 3 months 18 days
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		116		116
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 2,115,733		$ 2,142,114
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		1,599		0
Investment Securities, Continuous Unrealized Loss Position, Fair Value		2,117,332		2,142,114
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		146,464		172,014
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		83		0
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		146,547		172,014
Commercial agency mortgage-backed securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		17,259		17,259
Investment Securities, Gross Carrying Value		15,684	[1]	15,609	[2]
Investment Securities, Fair Value		14,861		14,588
Investment Securities, Gross Unrealized Gain		0		0
Investment Securities, Gross Unrealized Loss		$ (823)		$ (1,021)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		2		2
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 14,861		$ 14,588
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		0		0
Investment Securities, Continuous Unrealized Loss Position, Fair Value		14,861		14,588
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		823		1,021
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0		0
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		823		1,021
Other debt securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		14,288		12,788
Investment Securities, Gross Carrying Value		14,288	[1]	12,788	[2]
Investment Securities, Fair Value		13,421		12,199
Investment Securities, Gross Unrealized Gain		0		0
Investment Securities, Gross Unrealized Loss		$ (867)		$ (589)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		3		3
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 9,153		$ 9,428
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		255		257
Investment Securities, Continuous Unrealized Loss Position, Fair Value		9,408		9,685
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		847		571
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		20		18
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ 867		$ 589
[1]Carrying value includes $209 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.[2]Carrying value includes $225 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.[3]Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.[4]The average expected lives of residential mortgage-backed securities were 5.3 years years based upon current prepayment assumptions.

Available for Sale Securities (

Available for Sale Securities (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		$ 12,679,349		$ 12,359,413
Available-for-sale Securities, Fair Value		11,937,841		11,493,860
Available-for-sale Securities, Gross Unrealized Gain		33,726		28,661
Available-for-sale Securities, Gross Unrealized Loss		(775,234)		$ (894,214)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale Securities, Proceeds		0	$ 55,185
Available-for-sale Securities, Gross realized gains		0	1,933
Available-for-sale Securities, Gross realized losses		0	(996)
Available-for-sale Securities, Related federal and state income tax expense (benefit)		$ 0	$ 219
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		1,153		1,153
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 2,648,291		$ 6,173,710
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		60,748		376,598
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		7,485,234		3,829,168
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		714,486		517,616
Debt Securities, Available-for-sale, Unrealized Loss Position		10,133,525		10,002,878
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		775,234		894,214
Asset Pledged as Collateral with Right
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Pledged Securities		9,900,000		11,200,000
Fixed Maturity Securities [Member]
Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Less than One Year, Amortized Cost Basis		148,742
Available-for-sale Securities, Debt Maturities, One to Five Years, Amortized Cost Basis		2,665,838
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Amortized Cost Basis		2,360,090
Available-for-sale Securities, Debt Maturities, Over Ten Years, Amortized Cost Basis		502,606
Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Amortized Cost		5,677,276
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Less than One Year, Fair Value		146,996
Available-for-sale Securities, Debt Maturities, One to Five Years, Fair Value		2,510,112
Available-for-sale Securities, Debt Maturities, Six to Ten Years, Fair Value		2,131,783
Available-for-sale Securities, Debt Maturities, Over Ten Years, Fair Value		474,891
Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Fair Value		$ 5,263,782
Available-for-sale Securities, Debt Maturities, Weighted Average Maturity	[1]	5.82
U.S. Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		$ 1,000		1,000
Available-for-sale Securities, Fair Value		914		898
Available-for-sale Securities, Gross Unrealized Gain		0		0
Available-for-sale Securities, Gross Unrealized Loss		$ (86)		$ (102)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		1		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0		$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		914		899
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		86		102
Debt Securities, Available-for-sale, Unrealized Loss Position		914		899
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		86		102
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		685,963		687,875
Available-for-sale Securities, Fair Value		634,207		624,500
Available-for-sale Securities, Gross Unrealized Gain		1,338		321
Available-for-sale Securities, Gross Unrealized Loss		$ (53,094)		$ (63,696)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		215		227
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 61,983		$ 146,634
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		767		5,301
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		487,032		428,248
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		52,327		58,395
Debt Securities, Available-for-sale, Unrealized Loss Position		549,015		574,882
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		53,094		63,696
Commercial agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		4,989,813		4,892,257
Available-for-sale Securities, Fair Value		4,628,188		4,475,917
Available-for-sale Securities, Gross Unrealized Gain		5,738		3,479
Available-for-sale Securities, Gross Unrealized Loss		$ (367,363)		$ (419,819)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		288		285
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 824,751		$ 1,647,778
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		14,313		63,701
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		3,413,042		2,535,816
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		353,050		356,118
Debt Securities, Available-for-sale, Unrealized Loss Position		4,237,793		4,183,594
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		367,363		419,819
Other debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		500		500
Available-for-sale Securities, Fair Value		473		473
Available-for-sale Securities, Gross Unrealized Gain		0		0
Available-for-sale Securities, Gross Unrealized Loss		$ (27)		$ (27)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		1		1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0		$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		473		473
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		27		27
Debt Securities, Available-for-sale, Unrealized Loss Position		473		473
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		27		27
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost	[2]	7,002,073
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value		$ 6,674,059
Available-for-sale Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities		4 years 4 months 24 days
Residential agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		$ 6,311,728		6,161,358
Available-for-sale Securities, Fair Value		6,022,708		5,814,496
Available-for-sale Securities, Gross Unrealized Gain		15,379		13,085
Available-for-sale Securities, Gross Unrealized Loss		$ (304,399)		$ (359,947)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		618		613
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 1,531,016		$ 3,879,582
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		37,020		256,973
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		3,240,193		863,732
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		267,379		102,974
Debt Securities, Available-for-sale, Unrealized Loss Position		4,771,209		4,743,314
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		304,399		359,947
Residential non-agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		690,345		616,423
Available-for-sale Securities, Fair Value		651,351		577,576
Available-for-sale Securities, Gross Unrealized Gain		11,271		11,776
Available-for-sale Securities, Gross Unrealized Loss		$ (50,265)		$ (50,623)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		30		26
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 230,541		$ 499,716
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		8,648		50,623
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		343,580		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		41,617		0
Debt Securities, Available-for-sale, Unrealized Loss Position		574,121		499,716
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		$ 50,265		$ 50,623
[1]Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.[2]The average expected lives of residential mortgage-backed securities were 4.4 years years based upon current prepayment assumptions.

Securities Debt Securities, Ava

Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value (Details) $ in Thousands	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1,153	1,153
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 2,648,291	$ 6,173,710
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	7,485,234	3,829,168
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	10,133,525	10,002,878
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	60,748	376,598
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	714,486	517,616
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 775,234	$ 894,214
U.S. Treasury [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 0	$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	914	899
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	914	899
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	86	102
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 86	$ 102
Municipal securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	215	227
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 61,983	$ 146,634
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	487,032	428,248
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	549,015	574,882
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	767	5,301
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	52,327	58,395
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 53,094	$ 63,696
Residential agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	618	613
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 1,531,016	$ 3,879,582
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,240,193	863,732
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	4,771,209	4,743,314
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	37,020	256,973
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	267,379	102,974
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 304,399	$ 359,947
Residential non-agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	30	26
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 230,541	$ 499,716
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	343,580	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	574,121	499,716
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	8,648	50,623
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	41,617	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 50,265	$ 50,623
Commercial agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	288	285
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 824,751	$ 1,647,778
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,413,042	2,535,816
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	4,237,793	4,183,594
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	14,313	63,701
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	353,050	356,118
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 367,363	$ 419,819
Other debt securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 0	$ 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	473	473
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	473	473
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	27	27
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 27	$ 27

Securities Fair Value Option Se

Securities Fair Value Option Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value Option Securities [Line Items]
Fair value option securities, Fair Value	$ 326,390	$ 296,590
Fair value option securities, Net Unrealized Gain (Loss)	609	338
U.S. Treasury [Member]
Fair Value Option Securities [Line Items]
Fair value option securities, Fair Value	106,307	0
Fair value option securities, Net Unrealized Gain (Loss)	359	0
Residential agency mortgage-backed securities [Member]
Fair Value Option Securities [Line Items]
Fair value option securities, Fair Value	220,083	296,590
Fair value option securities, Net Unrealized Gain (Loss)	$ 250	$ 338

Derivatives, Fair Value of Deri

Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022
Derivative Assets, Fair Value, Net [Abstract]
Derviative contracts, net of cash collateral, Assets, Fair value	$ 394,291		$ 880,343
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Fair Value, Net of Cash Collateral	510,483		554,900
Not Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	24,892,189	[1]	28,273,268	[2]
Derivative Liabilities, Notional	26,504,073	[1]	25,778,851	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	1,259,825		1,736,280
Derivative Assets, Netting Adjustments	(642,685)		(669,203)
Derivative Assets, Net Fair Value Before Cash Collateral	617,140		1,067,077
Derivative Assets, Cash Collateral	(222,849)		(186,734)
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	1,293,255		1,708,852
Derivative Liabilities, Netting Adjustments	(642,685)		(669,203)
Derivative Liabilities, Net Fair Value Before Cash Collateral	650,570		1,039,649
Derivative Liabilities, Cash Collateral	(140,087)		(484,749)
Derivative Liabilities, Fair Value, Net of Cash Collateral	510,483		554,900
Not Designated as Hedging Instrument [Member] | Total customer risk management programs
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	10,219,761	[1]	10,788,231	[2]
Derivative Liabilities, Notional	10,326,482	[1]	11,561,139	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	1,167,177		1,607,870
Derivative Assets, Netting Adjustments	(595,579)		(594,543)
Derivative Assets, Net Fair Value Before Cash Collateral	571,598		1,013,327
Derivative Assets, Cash Collateral	(221,410)		(182,088)
Derviative contracts, net of cash collateral, Assets, Fair value	350,188		831,239
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	1,174,061		1,612,300
Derivative Liabilities, Netting Adjustments	(595,579)		(594,543)
Derivative Liabilities, Net Fair Value Before Cash Collateral	578,482		1,017,757
Derivative Liabilities, Cash Collateral	(80,146)		(484,326)
Derivative Liabilities, Fair Value, Net of Cash Collateral	498,336		533,431
Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	2,691,550	[1]	2,629,318	[2]
Derivative Liabilities, Notional	2,691,550	[1]	2,629,122	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	121,481		158,825
Derivative Assets, Netting Adjustments	(3,303)		0
Derivative Assets, Net Fair Value Before Cash Collateral	118,178		158,825
Derivative Assets, Cash Collateral	(98,143)		(114,955)
Derviative contracts, net of cash collateral, Assets, Fair value	20,035		43,870
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	121,040		158,816
Derivative Liabilities, Netting Adjustments	(3,303)		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	117,737		158,816
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	117,737		158,816
Not Designated as Hedging Instrument [Member] | Energy contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	7,456,604	[1]	7,918,020	[2]
Derivative Liabilities, Notional	7,564,737	[1]	8,696,060	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	988,149		1,232,283
Derivative Assets, Netting Adjustments	(592,276)		(594,543)
Derivative Assets, Net Fair Value Before Cash Collateral	395,873		637,740
Derivative Assets, Cash Collateral	(121,612)		(67,024)
Derviative contracts, net of cash collateral, Assets, Fair value	274,261		570,716
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	997,077		1,242,058
Derivative Liabilities, Netting Adjustments	(592,276)		(594,543)
Derivative Liabilities, Net Fair Value Before Cash Collateral	404,801		647,515
Derivative Liabilities, Cash Collateral	(80,146)		(484,319)
Derivative Liabilities, Fair Value, Net of Cash Collateral	324,655		163,196
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	59,321	[1]	219,791	[2]
Derivative Liabilities, Notional	57,909	[1]	214,855	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	57,431		216,569
Derivative Assets, Netting Adjustments	0		0
Derivative Assets, Net Fair Value Before Cash Collateral	57,431		216,569
Derivative Assets, Cash Collateral	(1,560)		0
Derviative contracts, net of cash collateral, Assets, Fair value	55,871		216,569
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	55,828		211,233
Derivative Liabilities, Netting Adjustments	0		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	55,828		211,233
Derivative Liabilities, Cash Collateral	0		(7)
Derivative Liabilities, Fair Value, Net of Cash Collateral	55,828		211,226
Not Designated as Hedging Instrument [Member] | Equity option contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	12,286	[1]	21,102	[2]
Derivative Liabilities, Notional	12,286	[1]	21,102	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	116		193
Derivative Assets, Netting Adjustments	0		0
Derivative Assets, Net Fair Value Before Cash Collateral	116		193
Derivative Assets, Cash Collateral	(95)		(109)
Derviative contracts, net of cash collateral, Assets, Fair value	21		84
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	116		193
Derivative Liabilities, Netting Adjustments	0		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	116		193
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	116		193
Not Designated as Hedging Instrument [Member] | Trading [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	14,507,221	[1]	17,400,037	[2]
Derivative Liabilities, Notional	16,042,176	[1]	14,038,906	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	87,395		126,910
Derivative Assets, Netting Adjustments	(45,420)		(74,647)
Derivative Assets, Net Fair Value Before Cash Collateral	41,975		52,263
Derivative Assets, Cash Collateral	(1,439)		(4,646)
Derviative contracts, net of cash collateral, Assets, Fair value	40,536		47,617
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	116,109		94,958
Derivative Liabilities, Netting Adjustments	(45,420)		(74,647)
Derivative Liabilities, Net Fair Value Before Cash Collateral	70,689		20,311
Derivative Liabilities, Cash Collateral	(59,941)		(423)
Derivative Liabilities, Fair Value, Net of Cash Collateral	10,748		19,888
Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	165,207	[1]	85,000	[2]
Derivative Liabilities, Notional	135,415	[1]	178,806	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	5,253		1,500
Derivative Assets, Netting Adjustments	(1,686)		(13)
Derivative Assets, Net Fair Value Before Cash Collateral	3,567		1,487
Derivative Assets, Cash Collateral	0		0
Derviative contracts, net of cash collateral, Assets, Fair value	3,567		1,487
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	3,085		1,594
Derivative Liabilities, Netting Adjustments	(1,686)		(13)
Derivative Liabilities, Net Fair Value Before Cash Collateral	1,399		1,581
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	$ 1,399		$ 1,581
[1]Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.[2]Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.

Derivatives, Derivatives Instru

Derivatives, Derivatives Instruments Gain (Loss) in Income Statement (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		$ (54,739)	$ 42,013
Gain (Loss) on Derivatives, Net		(1,344)	(46,981)
Total customer risk management programs
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		8,354	10,939
Gain (Loss) on Derivatives, Net		0	0
Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		1,770	6,342
Gain (Loss) on Derivatives, Net		0	0
Energy contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		6,553	4,449
Gain (Loss) on Derivatives, Net		0	0
Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		31	148
Gain (Loss) on Derivatives, Net		0	0
Equity option contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		0	0
Gain (Loss) on Derivatives, Net		0	0
Trading [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	[1]	(63,093)	31,074
Gain (Loss) on Derivatives, Net	[1]	0	0
Internal risk management programs [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue		0	0
Gain (Loss) on Derivatives, Net		$ (1,344)	$ (46,981)
[1]Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses, Loans by Portfolio Type (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	$ 6,432,171	$ 6,366,303
Loans, variable rate of interest	16,197,587	16,069,050
Loans, non-accrual	120,295	121,797
Total	22,750,053	22,557,150
Credit Commitments [Abstract]
Outstanding commitments to extend credit	15,100,000
Outstanding standby letters of credit	790,000
Commercial [Member]
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	3,427,345	3,392,422
Loans, variable rate of interest	10,735,572	10,759,780
Loans, non-accrual	54,432	60,297
Total	14,217,349	14,212,499
Commercial real estate [Member]
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	879,806	874,716
Loans, variable rate of interest	3,913,842	3,715,491
Loans, non-accrual	21,668	16,570
Total	4,815,316	4,606,777
Loans to individuals [Member]
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	2,125,020	2,099,165
Loans, variable rate of interest	1,548,173	1,593,779
Loans, non-accrual	44,195	44,930
Total	$ 3,717,388	$ 3,737,874

Loans and Allowances for Cred_3

Loans and Allowances for Credit Losses, Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 235,704	$ 256,421
Provision for loan losses	14,525	(3,967)
Loans charged off	(3,667)	(7,805)
Recoveries of loans previously charged off	2,898	1,824
Ending balance	249,460	246,473
Provision Details [Abstract]
Provision for credit losses	16,000	0
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	60,919	32,977
Provision for off-balance sheet credit risk	2,024	3,268
Ending balance	62,943	36,245
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	22,629,758		$ 22,435,353
Individually measured for impairment, recorded investment	120,295		121,797
Total	22,750,053		22,557,150
Related allowance [Abstract]
Collectively measured for impairment, related allowance	245,427		230,134
Individually measured for impairment, related allowance	4,033		5,570
Total	249,460		235,704
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	131,586	162,056
Provision for loan losses	6,330	(5,118)
Loans charged off	(12)	(6,081)
Recoveries of loans previously charged off	1,994	591
Ending balance	139,898	151,448
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	18,246	13,812
Provision for off-balance sheet credit risk	2,362	154
Ending balance	20,608	13,966
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	14,162,917		14,152,202
Individually measured for impairment, recorded investment	54,432		60,297
Total	14,217,349		14,212,499
Related allowance [Abstract]
Collectively measured for impairment, related allowance	137,415		127,566
Individually measured for impairment, related allowance	2,483		4,020
Total	139,898		131,586
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	57,648	58,553
Provision for loan losses	10,426	468
Loans charged off	(2,208)	(191)
Recoveries of loans previously charged off	137	144
Ending balance	66,003	58,974
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	40,490	17,442
Provision for off-balance sheet credit risk	(279)	3,023
Ending balance	40,211	20,465
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	4,793,648		4,590,207
Individually measured for impairment, recorded investment	21,668		16,570
Total	4,815,316		4,606,777
Related allowance [Abstract]
Collectively measured for impairment, related allowance	64,453		56,098
Individually measured for impairment, related allowance	1,550		1,550
Total	66,003		57,648
Loans to individuals [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	46,470	35,812
Provision for loan losses	(2,231)	683
Loans charged off	(1,447)	(1,533)
Recoveries of loans previously charged off	767	1,089
Ending balance	43,559	36,051
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	2,183	1,723
Provision for off-balance sheet credit risk	(59)	91
Ending balance	2,124	$ 1,814
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	3,673,193		3,692,944
Individually measured for impairment, recorded investment	44,195		44,930
Total	3,717,388		3,737,874
Related allowance [Abstract]
Collectively measured for impairment, related allowance	43,559		46,470
Individually measured for impairment, related allowance	0		0
Total	$ 43,559		$ 46,470

Loans and Allowances for Cred_4

Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	$ 840,927		$ 4,453,665
Financing Receivable, Originated, Year Two	4,425,700		3,294,886
Financing Receivable, Originated, Year Three	3,248,207		2,107,063
Financing Receivable, Originated, Year Four	2,020,125		1,734,561
Financing Receivable, Originated, Year Five	1,680,558		1,157,972
Financing Receivable, Originated, More Than Five Years	3,868,349		2,992,242
Financing Receivable, Revolving	6,641,089		6,790,248
Financing Receivable, Revolving, Converted to Term Loan	25,098		26,513
Total	22,750,053		22,557,150
Financing Receivable, Allowance for Credit Loss, Writeoff	3,667	$ 7,805
Commercial [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	698,796		2,655,782
Financing Receivable, Originated, Year Two	2,455,188		1,566,129
Financing Receivable, Originated, Year Three	1,494,936		994,261
Financing Receivable, Originated, Year Four	930,690		838,006
Financing Receivable, Originated, Year Five	775,049		779,311
Financing Receivable, Originated, More Than Five Years	2,279,853		1,657,429
Financing Receivable, Revolving	5,580,003		5,718,433
Financing Receivable, Revolving, Converted to Term Loan	2,834		3,148
Total	14,217,349		14,212,499
Financing Receivable, Allowance for Credit Loss, Writeoff	12	6,081
Commercial [Member] | Energy [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	12,973		157,745
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	146,448		76,951
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	66,052		30,284
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	8,865		13,447
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	11,959		6,377
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	12,595		5,822
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Revolving	3,139,165		3,134,164
Financing Receivable Revolving Writeoff	0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Financing Receivable Revolving Converted to Term Writeoff	0
Total	3,398,057		3,424,790
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Commercial [Member] | Healthcare [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	175,703		932,097
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	876,440		604,886
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	615,847		476,854
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	482,182		450,755
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	436,197		471,362
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	1,091,901		659,507
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Revolving	221,052		249,536
Financing Receivable Revolving Writeoff	0
Financing Receivable, Revolving, Converted to Term Loan	19		20
Financing Receivable Revolving Converted to Term Writeoff	0
Total	3,899,341		3,845,017
Financing Receivable, Allowance for Credit Loss, Writeoff	0
Commercial [Member] | Services [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	216,237		822,287
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	778,794		507,219
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	477,545		287,523
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	275,660		196,711
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	174,808		157,673
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	810,360		702,823
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Revolving	829,708		756,524
Financing Receivable Revolving Writeoff	5
Financing Receivable, Revolving, Converted to Term Loan	590		761
Financing Receivable Revolving Converted to Term Writeoff	0
Total	3,563,702		3,431,521
Financing Receivable, Allowance for Credit Loss, Writeoff	5
Commercial [Member] | General business [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	293,883		743,653
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	653,506		377,073
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	335,492		199,600
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	163,983		177,093
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	152,085		143,899
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	364,997		289,277
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	3
Financing Receivable, Revolving	1,390,078		1,578,209
Financing Receivable Revolving Writeoff	0
Financing Receivable, Revolving, Converted to Term Loan	2,225		2,367
Financing Receivable Revolving Converted to Term Writeoff	4
Total	3,356,249		3,511,171
Financing Receivable, Allowance for Credit Loss, Writeoff	7
Commercial real estate [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	46,900		1,188,483
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	1,383,300		1,158,002
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	1,187,644		552,616
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	540,129		648,561
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	651,970		247,625
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	857,310		649,874
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	2,208
Financing Receivable, Revolving	148,063		161,616
Financing Receivable Revolving Writeoff	0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Financing Receivable Revolving Converted to Term Writeoff	0
Total	4,815,316		4,606,777
Financing Receivable, Allowance for Credit Loss, Writeoff	2,208	191
Loans to individuals [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	95,231		609,400
Financing Receivable, Originated, Year Two	587,212		570,755
Financing Receivable, Originated, Year Three	565,627		560,186
Financing Receivable, Originated, Year Four	549,306		247,994
Financing Receivable, Originated, Year Five	253,539		131,036
Financing Receivable, Originated, More Than Five Years	731,186		684,939
Financing Receivable, Revolving	913,023		910,199
Financing Receivable, Revolving, Converted to Term Loan	22,264		23,365
Total	3,717,388		3,737,874
Financing Receivable, Allowance for Credit Loss, Writeoff	1,447	$ 1,533
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	71,000		354,529
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	349,949		374,927
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	372,782		395,948
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	385,114		63,504
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	62,058		42,571
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	306,740		281,290
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	4
Financing Receivable, Revolving	356,412		354,986
Financing Receivable Revolving Writeoff	0
Financing Receivable, Revolving, Converted to Term Loan	21,972		23,029
Financing Receivable Revolving Converted to Term Writeoff	1
Total	1,926,027		1,890,784
Financing Receivable, Allowance for Credit Loss, Writeoff	5
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		289
Financing Receivable, Originated, Year Two	1,021		2,254
Financing Receivable, Originated, Year Three	2,321		9,299
Financing Receivable, Originated, Year Four	7,620		12,182
Financing Receivable, Originated, Year Five	9,968		19,563
Financing Receivable, Originated, More Than Five Years	203,823		202,353
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	224,753		245,940
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	24,231		254,582
Financing Receivable Year One Originated Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Two	236,242		193,574
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Three	190,524		154,939
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Four	156,572		172,308
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, Year Five	181,513		68,902
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff	0
Financing Receivable, Originated, More Than Five Years	220,623		201,296
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff	1,437
Financing Receivable, Revolving	556,611		555,213
Financing Receivable Revolving Writeoff	1
Financing Receivable, Revolving, Converted to Term Loan	292		336
Financing Receivable Revolving Converted to Term Writeoff	4
Total	1,566,608		1,601,150
Financing Receivable, Allowance for Credit Loss, Writeoff	1,442
Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	12,973		157,745
Financing Receivable, Originated, Year Two	146,448		76,951
Financing Receivable, Originated, Year Three	66,052		30,284
Financing Receivable, Originated, Year Four	8,865		12,783
Financing Receivable, Originated, Year Five	11,301		5,992
Financing Receivable, Originated, More Than Five Years	11,408		4,980
Financing Receivable, Revolving	3,119,103		3,104,906
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	3,376,150		3,393,641
Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One			0
Financing Receivable, Originated, Year Two			0
Financing Receivable, Originated, Year Three			0
Financing Receivable, Originated, Year Four			0
Financing Receivable, Originated, Year Five			0
Financing Receivable, Originated, More Than Five Years			0
Financing Receivable, Revolving			0
Financing Receivable, Revolving, Converted to Term Loan			0
Total			0
Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		0
Financing Receivable, Originated, Year Four	0		664
Financing Receivable, Originated, Year Five	658		385
Financing Receivable, Originated, More Than Five Years	1,060		683
Financing Receivable, Revolving	20,062		28,018
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	21,780		29,750
Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	175,703		932,097
Financing Receivable, Originated, Year Two	876,440		604,886
Financing Receivable, Originated, Year Three	615,643		476,854
Financing Receivable, Originated, Year Four	479,575		404,204
Financing Receivable, Originated, Year Five	386,837		464,989
Financing Receivable, Originated, More Than Five Years	1,027,229		618,163
Financing Receivable, Revolving	220,992		245,898
Financing Receivable, Revolving, Converted to Term Loan	19		20
Total	3,782,438		3,747,111
Performing [Member] | Commercial [Member] | Healthcare [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	204		0
Financing Receivable, Originated, Year Four	429		20,071
Financing Receivable, Originated, Year Five	21,767		0
Financing Receivable, Originated, More Than Five Years	45,663		18,859
Financing Receivable, Revolving	60		4
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	68,123		38,934
Performing [Member] | Commercial [Member] | Healthcare [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		0
Financing Receivable, Originated, Year Four	2,178		0
Financing Receivable, Originated, Year Five	1,456		0
Financing Receivable, Originated, More Than Five Years	7,899		14,304
Financing Receivable, Revolving	0		3,634
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	11,533		17,938
Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	216,237		821,785
Financing Receivable, Originated, Year Two	759,320		496,510
Financing Receivable, Originated, Year Three	470,813		286,085
Financing Receivable, Originated, Year Four	275,065		193,481
Financing Receivable, Originated, Year Five	171,904		156,736
Financing Receivable, Originated, More Than Five Years	805,240		696,300
Financing Receivable, Revolving	799,522		722,371
Financing Receivable, Revolving, Converted to Term Loan	506		639
Total	3,498,607		3,373,907
Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		502
Financing Receivable, Originated, Year Two	19,077		5,139
Financing Receivable, Originated, Year Three	1,365		989
Financing Receivable, Originated, Year Four	219		771
Financing Receivable, Originated, Year Five	672		894
Financing Receivable, Originated, More Than Five Years	2,521		1,345
Financing Receivable, Revolving	6,246		8,668
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	30,100		18,308
Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	397		0
Financing Receivable, Originated, Year Three	86		0
Financing Receivable, Originated, Year Four	0		2,459
Financing Receivable, Originated, Year Five	2,232		43
Financing Receivable, Originated, More Than Five Years	2,599		2,789
Financing Receivable, Revolving	21,499		17,665
Financing Receivable, Revolving, Converted to Term Loan	84		122
Total	26,897		23,078
Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	288,367		725,894
Financing Receivable, Originated, Year Two	607,548		361,839
Financing Receivable, Originated, Year Three	320,451		198,274
Financing Receivable, Originated, Year Four	162,810		172,878
Financing Receivable, Originated, Year Five	147,988		139,140
Financing Receivable, Originated, More Than Five Years	355,227		283,694
Financing Receivable, Revolving	1,336,404		1,570,536
Financing Receivable, Revolving, Converted to Term Loan	2,193		2,329
Total	3,220,988		3,454,584
Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		17,759
Financing Receivable, Originated, Year Two	7,515		13,065
Financing Receivable, Originated, Year Three	8,200		208
Financing Receivable, Originated, Year Four	87		71
Financing Receivable, Originated, Year Five	70		7
Financing Receivable, Originated, More Than Five Years	1,762		2,291
Financing Receivable, Revolving	31,903		7,094
Financing Receivable, Revolving, Converted to Term Loan	25		26
Total	49,562		40,521
Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	5,516		0
Financing Receivable, Originated, Year Two	38,443		2,169
Financing Receivable, Originated, Year Three	6,841		66
Financing Receivable, Originated, Year Four	56		4,130
Financing Receivable, Originated, Year Five	4,013		4,680
Financing Receivable, Originated, More Than Five Years	7,940		3,287
Financing Receivable, Revolving	13,929		94
Financing Receivable, Revolving, Converted to Term Loan	0		4
Total	76,738		14,430
Performing [Member] | Commercial real estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	46,900		1,188,483
Financing Receivable, Originated, Year Two	1,383,300		1,158,002
Financing Receivable, Originated, Year Three	1,187,644		552,616
Financing Receivable, Originated, Year Four	540,129		641,102
Financing Receivable, Originated, Year Five	644,511		247,625
Financing Receivable, Originated, More Than Five Years	832,101		633,304
Financing Receivable, Revolving	148,063		161,616
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	4,782,648		4,582,748
Performing [Member] | Commercial real estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		0
Financing Receivable, Originated, Year Four	0		0
Financing Receivable, Originated, Year Five	0		0
Financing Receivable, Originated, More Than Five Years	11,000		0
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	11,000		0
Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One			0
Financing Receivable, Originated, Year Two			0
Financing Receivable, Originated, Year Three			0
Financing Receivable, Originated, Year Four			7,459
Financing Receivable, Originated, Year Five			0
Financing Receivable, Originated, More Than Five Years			0
Financing Receivable, Revolving			0
Financing Receivable, Revolving, Converted to Term Loan			0
Total			7,459
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	71,000		354,497
Financing Receivable, Originated, Year Two	348,697		373,190
Financing Receivable, Originated, Year Three	371,044		393,002
Financing Receivable, Originated, Year Four	380,908		63,142
Financing Receivable, Originated, Year Five	61,409		40,525
Financing Receivable, Originated, More Than Five Years	285,877		260,625
Financing Receivable, Revolving	351,428		352,126
Financing Receivable, Revolving, Converted to Term Loan	21,242		22,176
Total	1,891,605		1,859,283
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	68		81
Financing Receivable, Originated, Year Three	0		42
Financing Receivable, Originated, Year Four	1,355		0
Financing Receivable, Originated, Year Five	0		142
Financing Receivable, Originated, More Than Five Years	309		388
Financing Receivable, Revolving	2,843		527
Financing Receivable, Revolving, Converted to Term Loan	0		87
Total	4,575		1,267
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		187
Financing Receivable, Originated, Year Four	0		0
Financing Receivable, Originated, Year Five	0		0
Financing Receivable, Originated, More Than Five Years	7		138
Financing Receivable, Revolving	147		117
Financing Receivable, Revolving, Converted to Term Loan	0		1
Total	154		443
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		289
Financing Receivable, Originated, Year Two	1,021		2,254
Financing Receivable, Originated, Year Three	2,321		9,000
Financing Receivable, Originated, Year Four	7,321		10,722
Financing Receivable, Originated, Year Five	8,963		17,244
Financing Receivable, Originated, More Than Five Years	190,825		191,426
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	210,451		230,935
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	24,231		254,497
Financing Receivable, Originated, Year Two	236,041		193,095
Financing Receivable, Originated, Year Three	190,370		154,887
Financing Receivable, Originated, Year Four	156,515		172,114
Financing Receivable, Originated, Year Five	181,332		68,871
Financing Receivable, Originated, More Than Five Years	220,604		201,278
Financing Receivable, Revolving	550,478		549,187
Financing Receivable, Revolving, Converted to Term Loan	253		332
Total	1,559,824		1,594,261
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		47
Financing Receivable, Originated, Year Two	115		28
Financing Receivable, Originated, Year Three	109		40
Financing Receivable, Originated, Year Four	47		12
Financing Receivable, Originated, Year Five	2		17
Financing Receivable, Originated, More Than Five Years	0		0
Financing Receivable, Revolving	6,055		6,003
Financing Receivable, Revolving, Converted to Term Loan	39		4
Total	6,367		6,151
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	17		444
Financing Receivable, Originated, Year Three	40		0
Financing Receivable, Originated, Year Four	0		160
Financing Receivable, Originated, Year Five	160		0
Financing Receivable, Originated, More Than Five Years	0		0
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	217		604
Nonperforming Financial Instruments [Member] | Commercial [Member] | Energy [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		0
Financing Receivable, Originated, Year Four	0		0
Financing Receivable, Originated, Year Five	0		0
Financing Receivable, Originated, More Than Five Years	127		159
Financing Receivable, Revolving	0		1,240
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	127		1,399
Nonperforming Financial Instruments [Member] | Commercial [Member] | Healthcare [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		0
Financing Receivable, Originated, Year Four	0		26,480
Financing Receivable, Originated, Year Five	26,137		6,373
Financing Receivable, Originated, More Than Five Years	11,110		8,181
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	37,247		41,034
Nonperforming Financial Instruments [Member] | Commercial [Member] | Services [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		5,570
Financing Receivable, Originated, Year Three	5,281		449
Financing Receivable, Originated, Year Four	376		0
Financing Receivable, Originated, Year Five	0		0
Financing Receivable, Originated, More Than Five Years	0		2,389
Financing Receivable, Revolving	2,441		7,820
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	8,098		16,228
Nonperforming Financial Instruments [Member] | Commercial [Member] | General business [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		1,052
Financing Receivable, Originated, Year Four	1,030		14
Financing Receivable, Originated, Year Five	14		72
Financing Receivable, Originated, More Than Five Years	68		5
Financing Receivable, Revolving	7,842		485
Financing Receivable, Revolving, Converted to Term Loan	7		8
Total	8,961		1,636
Nonperforming Financial Instruments [Member] | Commercial real estate [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		0
Financing Receivable, Originated, Year Four	0		0
Financing Receivable, Originated, Year Five	7,459		0
Financing Receivable, Originated, More Than Five Years	14,209		16,570
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	21,668		16,570
Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		32
Financing Receivable, Originated, Year Two	1,184		1,656
Financing Receivable, Originated, Year Three	1,738		2,717
Financing Receivable, Originated, Year Four	2,851		362
Financing Receivable, Originated, Year Five	649		1,904
Financing Receivable, Originated, More Than Five Years	20,547		20,139
Financing Receivable, Revolving	1,994		2,216
Financing Receivable, Revolving, Converted to Term Loan	730		765
Total	29,693		29,791
Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0
Financing Receivable, Originated, Year Two	0		0
Financing Receivable, Originated, Year Three	0		299
Financing Receivable, Originated, Year Four	299		1,460
Financing Receivable, Originated, Year Five	1,005		2,319
Financing Receivable, Originated, More Than Five Years	12,998		10,927
Financing Receivable, Revolving	0		0
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	14,302		15,005
Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Personal [Member] | Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		38
Financing Receivable, Originated, Year Two	69		7
Financing Receivable, Originated, Year Three	5		12
Financing Receivable, Originated, Year Four	10		22
Financing Receivable, Originated, Year Five	19		14
Financing Receivable, Originated, More Than Five Years	19		18
Financing Receivable, Revolving	78		23
Financing Receivable, Revolving, Converted to Term Loan	0		0
Total	$ 200		$ 134

Loans and Allowances for Cred_5

Loans and Allowances for Credit Losses Loans and Allowances for Credit Losses, Nonaccrual (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	$ 120,295	$ 121,797
Financing Receivable, Nonaccrual, No Allowance	98,545	90,854
Financing Receivable, Nonaccrual, With Allowance	21,750	30,943
Financing Receivable, Nonaccrual, Related Allowance	4,033	5,570
Commercial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	54,432	60,297
Financing Receivable, Nonaccrual, No Allowance	46,722	45,531
Financing Receivable, Nonaccrual, With Allowance	7,710	14,766
Financing Receivable, Nonaccrual, Related Allowance	2,483	4,020
Commercial [Member] | Energy [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	127	1,399
Financing Receivable, Nonaccrual, No Allowance	127	1,399
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Commercial [Member] | Healthcare [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	37,247	41,034
Financing Receivable, Nonaccrual, No Allowance	37,247	34,661
Financing Receivable, Nonaccrual, With Allowance	0	6,373
Financing Receivable, Nonaccrual, Related Allowance	0	946
Commercial [Member] | Services [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	8,097	16,228
Financing Receivable, Nonaccrual, No Allowance	387	7,835
Financing Receivable, Nonaccrual, With Allowance	7,710	8,393
Financing Receivable, Nonaccrual, Related Allowance	2,483	3,074
Commercial [Member] | General business [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	8,961	1,636
Financing Receivable, Nonaccrual, No Allowance	8,961	1,636
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Commercial real estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	21,668	16,570
Financing Receivable, Nonaccrual, No Allowance	7,628	393
Financing Receivable, Nonaccrual, With Allowance	14,040	16,177
Financing Receivable, Nonaccrual, Related Allowance	1,550	1,550
Loans to individuals [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	44,195	44,930
Financing Receivable, Nonaccrual, No Allowance	44,195	44,930
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	29,693	29,791
Financing Receivable, Nonaccrual, No Allowance	29,693	29,791
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	200	134
Financing Receivable, Nonaccrual, No Allowance	200	134
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
US Government Agency Insured Loans [Member] | Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	14,302	15,005
Financing Receivable, Nonaccrual, No Allowance	14,302	15,005
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	$ 0	$ 0

Loans and Allowances for Cred_6

Loans and Allowances for Credit Losses, Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	$ 35,000
Healthcare [Member] | Commercial [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified in Period, Amount	26,000
US Government Agency Insured Loans [Member] | Residential mortgage [Member] | Loans to individuals [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modified, Subsequent Default	511
Financing Receivable, Modified in Period, Amount	$ 8,400

Loans and Allowances for Cred_7

Loans and Allowances for Credit Losses, By Aging Category (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	$ 65,056	$ 76,114
Current and Past Due Performing Loans	22,750,053	22,557,150
30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	74,016	55,039
60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	613	51,614
90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	110,990	94,633
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	22,564,434	22,355,864
Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	54	396
Current and Past Due Performing Loans	14,217,349	14,212,499
Commercial [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	7,336	7,255
Commercial [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	62	30,365
Commercial [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	32,489	5,813
Commercial [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	14,177,462	14,169,066
Commercial [Member] | Energy [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	0
Current and Past Due Performing Loans	3,398,057	3,424,790
Commercial [Member] | Energy [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	24
Commercial [Member] | Energy [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	0
Commercial [Member] | Energy [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	0
Commercial [Member] | Energy [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,398,057	3,424,766
Commercial [Member] | Healthcare [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	45	0
Current and Past Due Performing Loans	3,899,341	3,845,017
Commercial [Member] | Healthcare [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	5,914
Commercial [Member] | Healthcare [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	26,480
Commercial [Member] | Healthcare [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	32,420	459
Commercial [Member] | Healthcare [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,866,921	3,812,164
Commercial [Member] | Services [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	0
Current and Past Due Performing Loans	3,563,702	3,431,521
Commercial [Member] | Services [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	6,844	1,060
Commercial [Member] | Services [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	45	2,461
Commercial [Member] | Services [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	60	4,958
Commercial [Member] | Services [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,556,753	3,423,042
Commercial [Member] | General business [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	9	396
Current and Past Due Performing Loans	3,356,249	3,511,171
Commercial [Member] | General business [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	492	257
Commercial [Member] | General business [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	17	1,424
Commercial [Member] | General business [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	9	396
Commercial [Member] | General business [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,355,731	3,509,094
Commercial real estate [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	0
Current and Past Due Performing Loans	4,815,316	4,606,777
Commercial real estate [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	8,965	531
Commercial real estate [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	45	0
Commercial real estate [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	217
Commercial real estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	4,806,306	4,606,029
Loans to individuals [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	65,002	75,718
Current and Past Due Performing Loans	3,717,388	3,737,874
Loans to individuals [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	57,715	47,253
Loans to individuals [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	506	21,249
Loans to individuals [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	78,501	88,603
Loans to individuals [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,580,666	3,580,769
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	22	114
Current and Past Due Performing Loans	1,926,027	1,890,784
Loans to individuals [Member] | Residential mortgage [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	8,315	10,632
Loans to individuals [Member] | Residential mortgage [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	363	1,828
Loans to individuals [Member] | Residential mortgage [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	6,550	6,169
Loans to individuals [Member] | Residential mortgage [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	1,910,799	1,872,155
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	64,980	75,604
Current and Past Due Performing Loans	224,753	245,940
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	48,833	36,119
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	19,400
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	71,928	82,402
Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	103,992	108,019
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	0
Current and Past Due Performing Loans	1,566,608	1,601,150
Loans to individuals [Member] | Personal [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	567	502
Loans to individuals [Member] | Personal [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	143	21
Loans to individuals [Member] | Personal [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	23	32
Loans to individuals [Member] | Personal [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	$ 1,565,875	$ 1,600,595

Mortgage Banking Activities, Co

Mortgage Banking Activities, Components of Loans Held For Sale (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
Number of days for past due for loan to be considered nonperforming (in days)	90 days	90 days
Residential mortgage loans held for sale, nonperforming	$ 0		$ 0
Credit losses recognized on residential mortgage loans held for sale	0	$ 0
Components of Residential Mortgage Loans Held for Sale [Abstract]
Unpaid principal balance	72,746		74,941
Residential mortgage loans held for sale, Fair value	72,113		73,938
Residential mortgage loans held for sale	$ 74,175		$ 75,272
Residential Mortgage Loan Commitments [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
General number of days outstanding for residential mortgage commitments, minimum (in days)	60 days		60 days
General number of days outstanding for residential mortgage commitments, maximum (in days)	90 days		90 days
Components of Residential Mortgage Loans Held for Sale [Abstract]
Derivative, Notional Amount	$ 71,693		$ 45,492
Derivative, Net fair value	$ 2,694		$ 1,054
Forward sales contracts [Member] | Not Designated as Hedging Instrument [Member]
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
General number of days for delivery of loans, for which the price is set by forward sales contracts, minimum (in days)	60 days		60 days
General number of days for delivery for loans, for which the price is set by forward sales contracts, maximum (in days)	90 days		90 days
Components of Residential Mortgage Loans Held for Sale [Abstract]
Derivative, Notional Amount	$ 127,427		$ 109,469
Derivative, Net fair value	$ (632)		$ 280

Mortgage Banking Activities Mor

Mortgage Banking Activities Mortgage Banking Activities, Mortgage Banking Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Mortgage Banking Revenue [Abstract]
Net realized gains (losses) on sale of mortgage loans	$ (1,731)	$ 6,883
Net change in unrealized gain (loss) on mortgage loans held for sale	370	(5,827)
Net change in the fair value of mortgage loan commitments	1,640	(3,298)
Net change in the fair value of forward sales contracts	(912)	7,297
Total production revenue	(633)	5,055
Servicing revenue	15,000	11,595
Total mortgage banking revenue	$ 14,367	$ 16,650

Mortgage Banking Activities, Mo

Mortgage Banking Activities, Mortgage Servicing Rights (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Summary of Mortgage Servicing Rights [Abstract]
Number of residential mortgage loans serviced for others	118,303		110,541
Outstanding principal balance of residential mortgage loans serviced for others	$ 21,009,762,000		$ 18,863,201,000
Weighted average interest rate	3.55%		3.59%
Remaining term (in months)	285 months		283 months
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	$ 277,608,000	$ 163,198,000	$ 163,198,000
Additions	2,500,000	5,215,000
Acquisitions	31,138,000	0
Changes due to principal payments	(5,384,000)	(7,960,000)
Change in fair value due to market assumption changes	(6,059,000)	49,110,000
Ending balance	$ 299,803,000	$ 209,563,000	$ 277,608,000
Servicing Assets at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Discount rate - risk-free rate plus a market premium (in hundredths)	8.95%		9.51%
Prepayment rate - based upon loan interest rate, original term and loan type	7.43%		7.54%
Loan servicing costs - annually per loan based upon loan type, performing, minimum (in dollars per loan)	$ 69		$ 69
Loan servicing costs - annually per loan based upon loan type, performing, maximum (in dollars per loan)	94		94
Loan servicing costs - annually per loan based upon loan type, delinquent, minimum (in dollars per loan)	150		150
Loan servicing costs - annually per loan based upon loan type, delinquent, maximum (in dollars per loan)	500		500
Loan servicing costs - annually per loan based upon loan type, foreclosure, minimum (in dollars per loan)	875		875
Loan servicing costs - annually per loan based upon loan type, foreclosure, maximum (in dollars per loan)	$ 8,000		$ 8,000
Escrow earnings rate - indexed to rates paid on deposit accounts with comparable average life (in hundredths)	3.66%		4.06%
Primary secondary mortgage rate spread	105		105
Delinquency rate	1.40%		2.33%

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Details)	3 Months Ended
	Mar. 31, 2023 USD ($)
Judicial Ruling [Member] | Misuse of Revenues Pledged to Municipal Bonds [Member]
Litigation Settlement [Abstract]
Disgorged fees	$ 1,067,721
Litigation Settlement, Amount Awarded to Other Party	$ 600,000
Pending Litigation [Member] | Misuse of Revenues Pledged to Municipal Bonds [Member]
Litigation Settlement [Abstract]
Loss Contingency, Number of Plaintiffs	2
Pending Litigation [Member] | Bank Participation in Fraudulent Sale of Securities by Principals [Member]
Litigation Settlement [Abstract]
Loss Contingency, Number of Plaintiffs	19
Outstanding principal accrued interest and other amounts upon sale of facilities securing payment of the bonds	$ 25,000,000
Principal amount of entered judgment against the principal individual and his wife	36,805,051
Pre-judgment interest amount of entered judgment against the principal individual and his wife	$ 10,937,831

Commitments and Contingent Li_3

Commitments and Contingent Liabilities Variable Interest Entities (Details) $ in Millions	Mar. 31, 2023 USD ($)
Other Assets [Member]
Variable Interest Entity [Line Items]
Amortization Method Qualified Affordable Housing Project Investments	$ 401
Other Liabilities [Member]
Variable Interest Entity [Line Items]
Qualified Affordable Housing Project Investments, Commitment	$ 94

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	May 02, 2023	Mar. 31, 2023	Mar. 31, 2022
Dividends declared (in dollars per share)		$ 0.54	$ 0.53
Schedule of Accumulated Other Income (Loss) [Abstract]
Balance, Beginning of Period		$ (836,955)	$ 72,371
Net change in unrealized gain (loss)		124,045	(639,041)
Gain on available for sale securities, net		0	(937)
Interest revenue, Investment securities		16,051	0
Other comprehensive income, before income taxes		140,096	(639,978)
Federal and state income taxes		31,695	(149,781)
Other comprehensive income, net of income taxes		108,401	(490,197)
Balance, End of Period		(728,554)	(417,826)
Accumulated Net Unrealized Gain (Loss) on Available for Sale Securities [Member]
Schedule of Accumulated Other Income (Loss) [Abstract]
Balance, Beginning of Period		(664,618)	69,775
Net change in unrealized gain (loss)		124,045	(639,041)
Gain on available for sale securities, net			(937)
Interest revenue, Investment securities		0
Other comprehensive income, before income taxes		124,045	(639,978)
Federal and state income taxes		28,179	(149,781)
Other comprehensive income, net of income taxes		95,866	(490,197)
Balance, End of Period		(568,752)	(420,422)
AOCI, Accumulated Gain (Loss), Debt Securities, Investment Securities Transferred from Available-for-sale, Parent
Schedule of Accumulated Other Income (Loss) [Abstract]
Balance, Beginning of Period		(172,337)	0
Net change in unrealized gain (loss)		0	0
Gain on available for sale securities, net			0
Interest revenue, Investment securities		16,051
Other comprehensive income, before income taxes		16,051	0
Federal and state income taxes		3,516	0
Other comprehensive income, net of income taxes		12,535	0
Balance, End of Period		(159,802)	0
Accumulated Unrealized Gain (Loss) on Employee Benefit Plans [Member]
Schedule of Accumulated Other Income (Loss) [Abstract]
Balance, Beginning of Period		0	2,596
Net change in unrealized gain (loss)		0	0
Gain on available for sale securities, net			0
Interest revenue, Investment securities		0
Other comprehensive income, before income taxes		0	0
Federal and state income taxes		0	0
Other comprehensive income, net of income taxes		0	0
Balance, End of Period		$ 0	$ 2,596
Subsequent Event [Member]
Dividends Payable, Date Declared	May 02, 2023
Dividends declared (in dollars per share)	$ 0.54
Dividends Payable, Date to be Paid	May 30, 2023
Dividends Payable, Date of Record	May 15, 2023

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator: [Abstract]
Net income attributable to BOK Financial Corp. shareholders	$ 162,368	$ 62,488
Less: Earnings allocated to participating securities	1,255	451
Numerator for basic earnings per share – income available to common shareholders	161,113	62,037
Effect of reallocating undistributed earnings of participating securities	0	0
Numerator for diluted earnings per share – income available to common shareholders	$ 161,113	$ 62,037
Denominator: [Abstract]
Weighted average shares outstanding (in shares)	66,849,288	68,306,107
Less: Participating securities included in weighted average shares (in shares)	517,513	493,707
Denominator for basic earnings per common share (in shares)	66,331,775	67,812,400
Dilutive effect of employee stock compensation plans (in shares)	0	1,451
Denominator for diluted earnings per common share (in shares)	66,331,775	67,813,851
Basic earnings per share	$ 2.43	$ 0.91
Diluted earnings per share	$ 2.43	$ 0.91

Reportable Segments (Details)

Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net interest revenue from external sources	$ 352,348	$ 268,411
Net interest revenue (expense) from internal sources	0	0
Net interest revenue	352,348	268,411
Provision for credit losses	16,000	0
Net interest revenue after provision for credit losses	336,348	268,411
Other operating revenue	177,865	87,856
Other operating expense	305,812	277,618
Net direct contribution	208,401	78,649
Gain (loss) on financial instruments, net	0	0
Change in fair value of mortgage servicing rights	0	0
Gain (loss) on repossessed assets, net	0	0
Corporate expense allocations	0	0
Net income before taxes	208,401	78,649
Federal and state income taxes	45,905	16,197
Net income	162,496	62,452
Net income (loss) attributable to non-controlling interests	128	(36)
Net income attributable to BOK Financial Corp. shareholders	162,368	62,488
Average assets	45,982,468	50,561,074
Operating Segments [Member] | Commercial [Member]
Segment Reporting Information [Line Items]
Net interest revenue from external sources	287,646	147,590
Net interest revenue (expense) from internal sources	(21,101)	(10,579)
Net interest revenue	266,545	137,011
Provision for credit losses	76	5,343
Net interest revenue after provision for credit losses	266,469	131,668
Other operating revenue	56,845	57,427
Other operating expense	73,504	65,114
Net direct contribution	249,810	123,981
Gain (loss) on financial instruments, net	(58)	(204)
Change in fair value of mortgage servicing rights	0	0
Gain (loss) on repossessed assets, net	859	1,793
Corporate expense allocations	17,729	16,246
Net income before taxes	232,882	109,324
Federal and state income taxes	56,335	26,980
Net income	176,547	82,344
Net income (loss) attributable to non-controlling interests	0	0
Net income attributable to BOK Financial Corp. shareholders	176,547	82,344
Average assets	28,162,934	29,823,905
Operating Segments [Member] | Consumer [Member]
Segment Reporting Information [Line Items]
Net interest revenue from external sources	21,146	16,915
Net interest revenue (expense) from internal sources	88,235	10,292
Net interest revenue	109,381	27,207
Provision for credit losses	1,184	1,112
Net interest revenue after provision for credit losses	108,197	26,095
Other operating revenue	30,610	33,961
Other operating expense	50,198	48,789
Net direct contribution	88,609	11,267
Gain (loss) on financial instruments, net	(4,673)	(57,895)
Change in fair value of mortgage servicing rights	(6,059)	49,110
Gain (loss) on repossessed assets, net	14	45
Corporate expense allocations	11,618	12,080
Net income before taxes	66,273	(9,553)
Federal and state income taxes	15,586	(2,236)
Net income	50,687	(7,317)
Net income (loss) attributable to non-controlling interests	0	0
Net income attributable to BOK Financial Corp. shareholders	50,687	(7,317)
Average assets	9,934,511	10,273,890
Operating Segments [Member] | Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest revenue from external sources	20,940	56,231
Net interest revenue (expense) from internal sources	33,166	(465)
Net interest revenue	54,106	55,766
Provision for credit losses	(24)	(71)
Net interest revenue after provision for credit losses	54,130	55,837
Other operating revenue	108,911	25,018
Other operating expense	82,039	74,620
Net direct contribution	81,002	6,235
Gain (loss) on financial instruments, net	0	0
Change in fair value of mortgage servicing rights	0	0
Gain (loss) on repossessed assets, net	0	0
Corporate expense allocations	12,386	12,071
Net income before taxes	68,616	(5,836)
Federal and state income taxes	16,189	(1,315)
Net income	52,427	(4,521)
Net income (loss) attributable to non-controlling interests	0	0
Net income attributable to BOK Financial Corp. shareholders	52,427	(4,521)
Average assets	11,663,096	21,323,795
Funds Management and Other [Member]
Segment Reporting Information [Line Items]
Net interest revenue from external sources	22,616	47,675
Net interest revenue (expense) from internal sources	(100,300)	752
Net interest revenue	(77,684)	48,427
Provision for credit losses	14,764	(6,384)
Net interest revenue after provision for credit losses	(92,448)	54,811
Other operating revenue	(18,501)	(28,550)
Other operating expense	100,071	89,095
Net direct contribution	(211,020)	(62,834)
Gain (loss) on financial instruments, net	4,731	58,099
Change in fair value of mortgage servicing rights	6,059	(49,110)
Gain (loss) on repossessed assets, net	(873)	(1,838)
Corporate expense allocations	(41,733)	(40,397)
Net income before taxes	(159,370)	(15,286)
Federal and state income taxes	(42,205)	(7,232)
Net income	(117,165)	(8,054)
Net income (loss) attributable to non-controlling interests	128	(36)
Net income attributable to BOK Financial Corp. shareholders	(117,293)	(8,018)
Average assets	$ (3,778,073)	$ (10,860,516)

Fees and Commissions Revenue _3

Fees and Commissions Revenue Fees and Commissions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023		Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Total fees and commissions	$ 185,979		$ 97,635
Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	185,979		97,635
Fees and commission revenue not from contracts with customers	62,477	[1]	(16,086)	[2]
Fees and commissions revenue from contracts with customers	123,502	[3]	113,721	[4]
Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	52,396		(27,079)
Fees and commission revenue not from contracts with customers	39,550	[1]	(40,011)	[2]
Fees and commissions revenue from contracts with customers	12,846	[3]	12,932	[4]
Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	27,598		(54,048)
Fees and commission revenue not from contracts with customers	27,598	[1]	(54,048)	[2]
Fees and commissions revenue from contracts with customers	0	[3]	0	[4]
Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	8,354		10,938
Fees and commission revenue not from contracts with customers	8,354	[1]	10,938	[2]
Fees and commissions revenue from contracts with customers	0	[3]	0	[4]
Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,844		4,610
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	3,844	[3]	4,610	[4]
Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,306		3,738
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	3,306	[3]	3,738	[4]
Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	9,294		7,683
Fees and commission revenue not from contracts with customers	3,598	[1]	3,099	[2]
Fees and commissions revenue from contracts with customers	5,696	[3]	4,584	[4]
Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	25,621		24,216
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	25,621	[3]	24,216	[4]
TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	21,392		19,023
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	21,392	[3]	19,023	[4]
Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,158		3,651
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	2,158	[3]	3,651	[4]
Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,071		1,542
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	2,071	[3]	1,542	[4]
Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	50,657		46,399
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	50,657	[3]	46,399	[4]
Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	23,945		24,797
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	23,945	[3]	24,797	[4]
Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	7,660		3,958
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	7,660	[3]	3,958	[4]
Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	12,835		12,567
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	12,835	[3]	12,567	[4]
Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	6,217		5,077
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	6,217	[3]	5,077	[4]
Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	25,968		27,004
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	25,968	[3]	27,004	[4]
Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	13,847		14,094
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	13,847	[3]	14,094	[4]
Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	4,873		6,247
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	4,873	[3]	6,247	[4]
Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,639		5,545
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	5,639	[3]	5,545	[4]
Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,609		1,118
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]
Fees and commissions revenue from contracts with customers	1,609	[3]	1,118	[4]
Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	14,367		16,650
Fees and commission revenue not from contracts with customers	14,367	[1]	16,650	[2]
Fees and commissions revenue from contracts with customers	0	[3]	0	[4]
Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(633)		5,055
Fees and commission revenue not from contracts with customers	(633)	[1]	5,055	[2]
Fees and commissions revenue from contracts with customers	0	[3]	0	[4]
Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	15,000		11,595
Fees and commission revenue not from contracts with customers	15,000	[1]	11,595	[2]
Fees and commissions revenue from contracts with customers	0	[3]	0	[4]
Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	16,970		10,445
Fees and commission revenue not from contracts with customers	8,560	[1]	7,275	[2]
Fees and commissions revenue from contracts with customers	8,410	[3]	3,170	[4]
Operating Segments [Member] | Commercial [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	55,835		56,964
Operating Segments [Member] | Commercial [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	10,185		16,337
Operating Segments [Member] | Commercial [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	6,487		12,979
Operating Segments [Member] | Commercial [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,698		3,358
Operating Segments [Member] | Commercial [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	24,434		23,170
Operating Segments [Member] | Commercial [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	20,499		18,153
Operating Segments [Member] | Commercial [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,150		3,641
Operating Segments [Member] | Commercial [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,785		1,376
Operating Segments [Member] | Commercial [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	13,133		13,185
Operating Segments [Member] | Commercial [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	12,871		13,131
Operating Segments [Member] | Commercial [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	25		31
Operating Segments [Member] | Commercial [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	237		23
Operating Segments [Member] | Commercial [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Commercial [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	8,083		4,272
Operating Segments [Member] | Consumer [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	30,581		33,977
Operating Segments [Member] | Consumer [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	916		896
Operating Segments [Member] | Consumer [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	908		886
Operating Segments [Member] | Consumer [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	8		10
Operating Segments [Member] | Consumer [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Consumer [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	12,278		13,295
Operating Segments [Member] | Consumer [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	499		450
Operating Segments [Member] | Consumer [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	4,828		6,193
Operating Segments [Member] | Consumer [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,638		5,545
Operating Segments [Member] | Consumer [Member] | Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,313		1,107
Operating Segments [Member] | Consumer [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	14,925		17,131
Operating Segments [Member] | Consumer [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(633)		5,055
Operating Segments [Member] | Consumer [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	15,558		12,076
Operating Segments [Member] | Consumer [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,462		2,655
Operating Segments [Member] | Wealth Management [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	108,911		25,023
Operating Segments [Member] | Wealth Management [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	40,444		(40,558)
Operating Segments [Member] | Wealth Management [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	27,598		(54,048)
Operating Segments [Member] | Wealth Management [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	100		817
Operating Segments [Member] | Wealth Management [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,844		4,610
Operating Segments [Member] | Wealth Management [Member] | Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,306		3,738
Operating Segments [Member] | Wealth Management [Member] | Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,596		4,325
Operating Segments [Member] | Wealth Management [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	160		59
Operating Segments [Member] | Wealth Management [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(17)		(17)
Operating Segments [Member] | Wealth Management [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Wealth Management [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	177		76
Operating Segments [Member] | Wealth Management [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	50,678		46,443
Operating Segments [Member] | Wealth Management [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	23,945		24,797
Operating Segments [Member] | Wealth Management [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	7,660		3,958
Operating Segments [Member] | Wealth Management [Member] | Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	12,835		12,567
Operating Segments [Member] | Wealth Management [Member] | Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	6,238		5,121
Operating Segments [Member] | Wealth Management [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	556		522
Operating Segments [Member] | Wealth Management [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	477		513
Operating Segments [Member] | Wealth Management [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	20		23
Operating Segments [Member] | Wealth Management [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Wealth Management [Member] | Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	59		(14)
Operating Segments [Member] | Wealth Management [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Wealth Management [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Wealth Management [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Operating Segments [Member] | Wealth Management [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	17,073		18,557
Funds Management and Other [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(9,348)		(18,329)
Funds Management and Other [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,767		(2,858)
Funds Management and Other [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,767		(2,858)
Funds Management and Other [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	111		91
Funds Management and Other [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2		1
Funds Management and Other [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	109		90
Funds Management and Other [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(21)		(44)
Funds Management and Other [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(21)		(44)
Funds Management and Other [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1		2
Funds Management and Other [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1		0
Funds Management and Other [Member] | Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		2
Funds Management and Other [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(558)		(481)
Funds Management and Other [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0
Funds Management and Other [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(558)		(481)
Funds Management and Other [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	$ (10,648)		$ (15,039)
[1]Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance.[2]Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance.[3]In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.[4]In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.

Fair Value Measurements, Fair V

Fair Value Measurements, Fair Value Of Financial Instruments as Measured On a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022		Mar. 31, 2022	Dec. 31, 2021
Assets: [Abstract]
Trading securities	$ 2,294,358		$ 4,464,161
Available for sale securities	11,937,841		11,493,860
Fair value option securities	326,390		296,590
Mortgage servicing rights	299,803		277,608		$ 209,563	$ 163,198
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	510,483		554,900
U.S. government securities [Member]
Assets: [Abstract]
Trading securities	5,618		9,823
Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	2,210,721		4,406,848
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Municipal securities [Member]
Assets: [Abstract]
Trading securities	37,455		21,484
Available for sale securities	634,207		624,500
Asset-backed securities [Member]
Assets: [Abstract]
Trading securities	10,194		0
U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	914		898
Fair value option securities	106,307		0
Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	651,351		577,576
Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	4,628,188		4,475,917
Other debt securities [Member]
Assets: [Abstract]
Trading securities	30,370		26,006
Available for sale securities	473		473
Fair Value, Recurring [Member]
Assets: [Abstract]
Trading securities	2,294,358		4,464,161
Available for sale securities	11,937,841		11,493,860
Fair value option securities	326,390
Residential mortgage loans held for sale	74,175	[1]	75,272	[2]
Mortgage servicing rights	299,803	[3]	277,608	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	510,483		554,900
Fair Value, Recurring [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	5,618		9,823
Fair Value, Recurring [Member] | Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	2,210,721		4,406,848
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Fair Value, Recurring [Member] | Municipal securities [Member]
Assets: [Abstract]
Trading securities	37,455		21,484
Available for sale securities	634,207		624,500
Fair Value, Recurring [Member] | Asset-backed securities [Member]
Assets: [Abstract]
Trading securities	10,194
Fair Value, Recurring [Member] | Other trading securities
Assets: [Abstract]
Trading securities	30,370		26,006
Fair Value, Recurring [Member] | U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	914		898
Fair value option securities	106,307
Fair Value, Recurring [Member] | Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	651,351		577,576
Fair Value, Recurring [Member] | Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	4,628,188		4,475,917
Fair Value, Recurring [Member] | Other debt securities [Member]
Assets: [Abstract]
Available for sale securities	473		473
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets: [Abstract]
Trading securities	4,878		4,970
Available for sale securities	914		898
Fair value option securities	106,307
Residential mortgage loans held for sale	0	[1]	0	[2]
Mortgage servicing rights	0	[3]	0	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	303		2,110
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	3,822		16
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	4,878		4,970
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	0		0
Available for sale securities	0		0
Fair value option securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal securities [Member]
Assets: [Abstract]
Trading securities	0		0
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Asset-backed securities [Member]
Assets: [Abstract]
Trading securities	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other trading securities
Assets: [Abstract]
Trading securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	914		898
Fair value option securities	106,307
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets: [Abstract]
Trading securities	2,289,480		4,459,191
Available for sale securities	11,936,454		11,492,489
Fair value option securities	220,083
Residential mortgage loans held for sale	67,024	[1]	68,054	[2]
Mortgage servicing rights	0	[3]	0	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	393,988		878,233
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	506,661		554,884
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	740		4,853
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	2,210,721		4,406,848
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal securities [Member]
Assets: [Abstract]
Trading securities	37,455		21,484
Available for sale securities	634,207		624,500
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed securities [Member]
Assets: [Abstract]
Trading securities	10,194
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other trading securities
Assets: [Abstract]
Trading securities	30,370		26,006
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair value option securities	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	651,351		577,576
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	4,628,188		4,475,917
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets: [Abstract]
Trading securities	0		0
Available for sale securities	473		473
Fair value option securities	0
Residential mortgage loans held for sale	7,151	[1]	7,218	[2]
Mortgage servicing rights	299,803	[3]	277,608	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	$ 0		$ 0
Liquidity Discount on Mortgage Loans Qualifying for Sale to US Govt Agencies	77.43%		77.55%
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	$ 0		$ 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	0		0
Available for sale securities	0		0
Fair value option securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal securities [Member]
Assets: [Abstract]
Trading securities	0		0
Available for sale securities			0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed securities [Member]
Assets: [Abstract]
Trading securities	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other trading securities
Assets: [Abstract]
Trading securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair value option securities	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities [Member]
Assets: [Abstract]
Available for sale securities	$ 473		$ 473
[1]Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.43% of the unpaid principal balance.[2]Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.55% of the unpaid principal balance.[3]A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3 See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes . 3 See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes.

Fair Value Measurements, Fair_2

Fair Value Measurements, Fair Value Measured On a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other gains (losses), net	$ 2,251	$ (1,644)
Fair Value, Nonrecurring [Member] | Nonaccruing Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross charge-offs against allowance for loan losses	1,991	818
Other gains (losses), net	0	0
Fair Value, Nonrecurring [Member] | Real estate and other repossessed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross charge-offs against allowance for loan losses	0	0
Other gains (losses), net	(101)	106
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Nonaccruing Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real estate and other repossessed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Nonaccruing Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	4,168
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real estate and other repossessed assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 547	$ 1,412

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Measurement, Measured On Non-Recurring Basis, Signfiicant Unobservable Inputs, Quantitative Information (Details) - Fair Value, Nonrecurring [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	Mar. 31, 2023		Mar. 31, 2022
Discounted Cash Flow [Member] | Nonaccruing Loans [Member] | Management knowledge of Industry and non-real estate collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 14,040		$ 244
Discounted Cash Flow [Member] | Real estate and other repossessed assets [Member] | Management knowledge of Industry and non-real estate collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 0
Discounted Cash Flow [Member] | Real estate and other repossessed assets [Member] | Marketability adjustments off appraised value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure			$ 400
Minimum [Member] | Nonaccruing Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance	88%	[1]	3%	[2]
Minimum [Member] | Real estate and other repossessed assets [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketability adjustments off appraised value			75%
Maximum [Member] | Nonaccruing Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance	88%	[1]	25%	[2]
Maximum [Member] | Real estate and other repossessed assets [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketability adjustments off appraised value			75%
Weighted Average [Member] | Nonaccruing Loans [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance	88%	[1]	5%	[2]
Weighted Average [Member] | Real estate and other repossessed assets [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Marketability adjustments off appraised value			75%
[1]Represents fair value as a percentage of the unpaid principal balance.[2]Represents fair value as a percentage of the unpaid principal balance.

Fair Value Measurements, Financ

Fair Value Measurements, Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023		Dec. 31, 2022		Mar. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	$ 2,294,358		$ 4,464,161
Debt Securities, Held-to-maturity, gross	2,657,577		2,739,241
Investment securities, Allowance for Credit Loss	(497)	[1]	(558)	[2]
Investment Securities, Amortized Cost, After Allowance for Credit Loss	2,657,080		2,738,683
Available for sale securities	11,937,841		11,493,860
Fair value option securities	326,390		296,590
Residential mortgage loans held for sale	74,175		75,272
Loans	22,750,053		22,557,150
Allowance for loan losses	(249,460)		(235,704)
Loans, net of allowance	22,500,593		22,321,446
Mortgage servicing rights	299,803		277,608		$ 209,563	$ 163,198
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Time deposits	1,576,610		1,461,842
Subordinated debentures	131,148		131,205
Derivative contracts, net of cash collateral, Liabilities, Fair Value	510,483		554,900
Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	14,217,349		14,212,499
Allowance for loan losses	(139,898)		(131,586)
Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	4,815,316		4,606,777
Allowance for loan losses	(66,003)		(57,648)
Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,717,388		3,737,874
Allowance for loan losses	(43,559)		(46,470)
U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,618		9,823
Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	2,210,721		4,406,848
Debt Securities, Held-to-maturity, gross	2,472,291		2,538,565
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	37,455		21,484
Debt Securities, Held-to-maturity, gross	153,739		170,629
Available for sale securities	634,207		624,500
Asset-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	10,194		0
U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	914		898
Fair value option securities	106,307		0
Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	651,351		577,576
Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	17,259		17,259
Available for sale securities	4,628,188		4,475,917
Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	30,370		26,006
Debt Securities, Held-to-maturity, gross	14,288		12,788
Available for sale securities	473		473
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	792,371		943,810
Interest-bearing cash and cash equivalents	571,613		457,906
Trading securities	2,294,358		4,464,161
Debt Securities, Held-to-maturity, gross	2,448,633		2,514,245
Investment securities, Allowance for Credit Loss	(497)		(558)
Investment Securities, Amortized Cost, After Allowance for Credit Loss	2,448,136		2,513,687
Available for sale securities	11,937,841		11,493,860
Fair value option securities	326,390
Residential mortgage loans held for sale	74,175		75,272
Loans	22,750,053		22,557,150
Allowance for loan losses	(249,460)		(235,704)
Loans, net of allowance	22,500,593		22,321,446
Mortgage servicing rights	299,803		277,608
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Deposits with no stated maturity	31,004,137		33,018,863
Time deposits	1,576,610		1,461,842
Other borrowed funds	6,335,609		7,007,285
Subordinated debentures	131,148		131,205
Derivative contracts, net of cash collateral, Liabilities, Fair Value	510,483		554,900
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	14,217,349		14,212,499
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	4,815,316		4,606,777
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,717,388		3,737,874
Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,618		9,823
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	2,210,721		4,406,848
Debt Securities, Held-to-maturity, gross	2,264,922		2,315,219
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	37,455		21,484
Debt Securities, Held-to-maturity, gross	153,739		170,629
Available for sale securities	634,207		624,500
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Asset-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	10,194
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	30,370		26,006
Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	914		898
Fair value option securities	106,307
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	651,351		577,576
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	15,684		15,609
Available for sale securities	4,628,188		4,475,917
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	14,288		12,788
Available for sale securities	473		473
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	792,371		943,810
Interest-bearing cash and cash equivalents	571,613		457,906
Trading securities	2,294,358		4,464,161
Debt Securities, Held-to-maturity, gross	2,307,686		2,346,768
Investment securities, Allowance for Credit Loss	0		0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	2,307,686		2,346,768
Available for sale securities	11,937,841		11,493,860
Fair value option securities	326,390
Residential mortgage loans held for sale	74,175		75,272
Loans	22,380,424		21,891,223
Allowance for loan losses	0		0
Loans, net of allowance	22,380,424		21,891,223
Mortgage servicing rights	299,803		277,608
Derviative contracts, net of cash collateral, Assets, Fair value	394,291		880,343
Deposits with no stated maturity	31,004,137		33,018,863
Time deposits	1,547,154		1,431,245
Other borrowed funds	6,333,599		7,005,305
Subordinated debentures	125,077		121,497
Derivative contracts, net of cash collateral, Liabilities, Fair Value	510,483		554,900
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	14,129,311		13,905,765
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	4,703,787		4,454,048
Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,547,326		3,531,410
Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,618		9,823
Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	2,210,721		4,406,848
Debt Securities, Held-to-maturity, gross	2,118,538		2,143,360
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	37,455		21,484
Debt Securities, Held-to-maturity, gross	160,866		176,621
Available for sale securities	634,207		624,500
Estimate of Fair Value, Fair Value Disclosure [Member] | Asset-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	10,194
Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	30,370		26,006
Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	914		898
Fair value option securities	106,307
Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	651,351		577,576
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	14,861		14,588
Available for sale securities	4,628,188		4,475,917
Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	13,421		12,199
Available for sale securities	473		473
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	792,371		943,810
Interest-bearing cash and cash equivalents	571,613		457,906
Trading securities	4,878		4,970
Debt Securities, Held-to-maturity, gross	0		0
Investment securities, Allowance for Credit Loss	0		0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	0		0
Available for sale securities	914		898
Fair value option securities	106,307
Residential mortgage loans held for sale	0		0
Loans	0		0
Allowance for loan losses	0		0
Loans, net of allowance	0		0
Mortgage servicing rights	0		0
Derviative contracts, net of cash collateral, Assets, Fair value	303		2,110
Deposits with no stated maturity	0		0
Time deposits	0		0
Other borrowed funds	0		0
Subordinated debentures	0		0
Derivative contracts, net of cash collateral, Liabilities, Fair Value	3,822		16
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	4,878		4,970
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	0		0
Fair value option securities	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Asset-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	914		898
Fair value option securities	106,307
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	0		0
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	0		0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0		0
Interest-bearing cash and cash equivalents	0		0
Trading securities	2,289,480		4,459,191
Debt Securities, Held-to-maturity, gross	2,179,978		2,208,253
Investment securities, Allowance for Credit Loss	0		0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	2,179,978		2,208,253
Available for sale securities	11,936,454		11,492,489
Fair value option securities	220,083
Residential mortgage loans held for sale	67,024		68,054
Loans	0		0
Allowance for loan losses	0		0
Loans, net of allowance	0		0
Mortgage servicing rights	0		0
Derviative contracts, net of cash collateral, Assets, Fair value	393,988		878,233
Deposits with no stated maturity	0		0
Time deposits	0		0
Other borrowed funds	0		0
Subordinated debentures	125,077		121,497
Derivative contracts, net of cash collateral, Liabilities, Fair Value	506,661		554,884
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	0		0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	0		0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	0		0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	740		4,853
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	2,210,721		4,406,848
Debt Securities, Held-to-maturity, gross	2,118,538		2,143,360
Available for sale securities	6,022,708		5,814,496
Fair value option securities	220,083		296,590
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	37,455		21,484
Debt Securities, Held-to-maturity, gross	33,158		38,106
Available for sale securities	634,207		624,500
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Asset-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	10,194
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	30,370		26,006
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	0		0
Fair value option securities	0
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	651,351		577,576
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	14,861		14,588
Available for sale securities	4,628,188		4,475,917
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	13,421		12,199
Available for sale securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0		0
Interest-bearing cash and cash equivalents	0		0
Trading securities	0		0
Debt Securities, Held-to-maturity, gross	127,708		138,515
Investment securities, Allowance for Credit Loss	0		0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	127,708		138,515
Available for sale securities	473		473
Fair value option securities	0
Residential mortgage loans held for sale	7,151		7,218
Loans	22,380,424		21,891,223
Allowance for loan losses	0		0
Loans, net of allowance	22,380,424		21,891,223
Mortgage servicing rights	299,803		277,608
Derviative contracts, net of cash collateral, Assets, Fair value	0		0
Deposits with no stated maturity	31,004,137		33,018,863
Time deposits	1,547,154		1,431,245
Other borrowed funds	6,333,599		7,005,305
Subordinated debentures	0		0
Derivative contracts, net of cash collateral, Liabilities, Fair Value	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	14,129,311		13,905,765
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	4,703,787		4,454,048
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,547,326		3,531,410
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	0		0
Fair value option securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Debt Securities, Held-to-maturity, gross	127,708		138,515
Available for sale securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Asset-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	0		0
Fair value option securities	0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	0		0
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	0		0
Available for sale securities	$ 473		$ 473
[1]Carrying value includes $209 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.[2]Carrying value includes $225 million of net unrealized loss which remains in Accumulated other comprehensive income ("AOCI") in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.