10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One) 

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2024

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____________ to ______________                 

Commission File No. 001-37811

BOK FINANCIAL CORP

(Exact name of registrant as specified in its charter) 

Oklahoma		73-1373454
(State or other jurisdiction of Incorporation or Organization)		(IRS Employer Identification No.)
Bank of Oklahoma Tower
Boston Avenue at Second Street
Tulsa,	Oklahoma	74192
(Address of Principal Executive Offices)		(Zip Code)

(918) 588-6000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, par value $0.00006 per share	BOKF	Nasdaq Stock Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.       Yes  ý  No  ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  ý  No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer  ý       Accelerated filer       ¨            

Non-accelerated filer   ¨    Smaller reporting company ☐

    Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).   Yes  ☐  No  ý

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date: 64,127,824 shares of common stock ($.00006 par value) as of June 30, 2024.

BOK Financial Corporation

Form 10-Q

Quarter Ended June 30, 2024

Index

Glossary of Defined Terms	1
Part I.  Financial Information
Management's Discussion and Analysis (Item 2)	2
Market Risk (Item 3)	39
Controls and Procedures (Item 4)	43
Consolidated Financial Statements – Unaudited (Item 1)	44
Six-Month Financial Summary – Unaudited (Item 2)	94
Quarterly Financial Summary – Unaudited (Item 2)	95
Quarterly Earnings Trend – Unaudited	98
Part II.  Other Information
Item 1.  Legal Proceedings	99
Item 1A. Risk Factors	99
Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds	99
Item 5. Other Information	99
Item 6.  Exhibits	100
Signatures	101

GLOSSARY OF DEFINED TERMS

The following items may be used throughout this report, including the consolidated financial statements and related notes.

Term	Definition
AFS	Available For Sale
AOCI	Accumulated Other Comprehensive Income
ASU	Accounting Standards Update
ATM	Automated Teller Machine
Board	Board of Directors of BOK Financial Corporation
BOK Financial	BOK Financial Corporation
BOKF	BOK Financial Corporation
BOKF Insurance	BOK Financial Insurance, Inc.
BOKFI	BOK Financial Insurance, Inc.
CECL	Current Expected Credit Losses
Company	BOK Financial Corporation
EFT	Electronic Funds Transfer
FASB	Financial Accounting Standards Board
FDIC	Federal Deposit Insurance Corporation
GAAP	Generally Accepted Accounting Principles in the United States of America
GDP	Gross Domestic Product
GNMA	Government National Mortgage Association
MSR	Mortgage Servicing Rights
Nasdaq	National Association of Securities Dealers Automated Quotations
NYMEX	New York Mercantile Exchange
PPNR	Pre-Provision Net Revenue
RMHFS	Residential Mortgages Held for Sale
SEC	Securities and Exchange Commission
SOFR	Secured Overnight Financing Rate
SVaR	Stressed Value at Risk
TransFund	BOKF's electronic funds transfer network
USDC	United States District Court
VA	U.S. Department of Veterans Affairs
VaR	Value at Risk
WTI	West Texas Intermediate

- 1 -

Management's Discussion and Analysis of Financial Condition and Results of Operations

Performance Summary

BOK Financial reported net income of $163.7 million or $2.54 per diluted share for the second quarter of 2024 compared to $83.7 million or $1.29 per diluted share for the first quarter of 2024. Excluding the gain on conversion of Visa shares, the additional FDIC special assessment expense, and the contribution of Visa shares to the BOKF Foundation, net income would have been $131.1 million or $2.02 per share for the second quarter of 2024, both of which are non-GAAP measures1. PPNR1, also a non-GAAP measure, increased $104.1 million to $219.0 million compared to the first quarter of 2024.

Highlights of the second quarter of 2024 compared to the first quarter of 2024 included:

•Net interest income totaled $296.0 million, an increase of $2.4 million over the prior quarter. Net interest margin was 2.56% for the second quarter of 2024 compared to 2.61% for the prior quarter. The pace of demand deposit migration and deposit repricing has slowed compared to the previous quarter and was offset by improving yields on the available for sale securities portfolio. For the second quarter of 2024, our core net interest margin excluding trading activities1, a non-GAAP measure, was 2.94% compared to 2.97% in the prior quarter.

•Fees and commissions revenue totaled $200.0 million, consistent with the prior quarter. Higher fiduciary and asset management revenue and transaction card revenue was offset by lower brokerage and trading revenue.

•Other operating expense totaled $336.7 million, a decrease of $3.7 million. Personnel expense decreased $11.6 million due to lower incentive compensation, including deferred compensation plans, regular compensation, and employee benefits. Non-personnel expense increased $7.9 million, largely due to our contribution of converted Visa shares valued at $10.0 million to the BOKF Foundation.

•Other gains and losses, net increased $53.1 million to $57.4 million. The second quarter of 2024 included a $53.8 million pre-tax gain on the conversion of our Visa B shares under the recently announced exchange offer by Visa, Inc. The gain offsets losses of $45.2 million on the repositioning of the available for sale securities portfolio realized in the first quarter of 2024.

•Period end outstanding loan balances totaled $24.6 billion at June 30, 2024, growing $381 million over March 31, 2024, largely due to growth in commercial loans, partially offset by a reduction in commercial real estate loans. Average loan balances increased $437 million to $24.4 billion.

•The provision for credit losses of $8.0 million in the second quarter of 2024 reflects continued loan growth and a stable economic forecast. Net charge-offs were $6.9 million or 0.11% of average loans on an annualized basis in the second quarter. The resulting combined allowance for credit losses totaled $330 million or 1.34% of outstanding loans at June 30, 2024. The combined allowance for credit losses was $329 million or 1.36% of outstanding loans at March 31, 2024.

•Nonperforming assets not guaranteed by U.S. government agencies were $86 million, a $27 million decrease compared to March 31, 2024. Potential problem loans increased by $6.0 million while other loans especially mentioned increased by $123 million compared to March 31, 2024.

•Period end deposits were $36.2 billion at June 30, 2024, an $858 million increase over March 31, 2024. Average deposits increased $627 million, including an $872 million increase in average interest-bearing deposits, partially offset by a $244 million reduction in demand deposit balances. The loan to deposit ratio was 68% at June 30, 2024, unchanged from the prior quarter.

•Assets under management or administration totaled $107.5 billion at June 30, 2024, increasing $1.9 billion compared to March 31, 2024.

1    See Explanation and Reconciliation of Non-GAAP Measures in "Non-GAAP Measures" section following.

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•The Company's tangible common equity ratio1, a non-GAAP measure, was 8.38% at June 30, 2024 and 8.21% at March 31, 2024. The tangible common equity ratio is primarily based on total shareholders' equity, which includes unrealized gains and losses on available for sale securities. Adjusted for all securities portfolio losses, including the tax adjusted losses in the investment portfolio, the tangible common equity ratio1 would be 8.06% at June 30, 2024 and 7.92% at March 31, 2024.

•The common equity Tier 1 capital ratio at June 30, 2024 was 12.10%. Other regulatory capital ratios include the Tier 1 capital ratio at 12.11%, total capital ratio at 13.25%, and leverage ratio at 9.39%. At March 31, 2024, the common equity Tier 1 capital ratio was 11.99%, the Tier 1 capital ratio was 12.00%, total capital ratio was 13.15%, and leverage ratio was 9.42%.

•The Company repurchased 412,176 shares of common stock at an average price of $90.38 per share in the second quarter of 2024 and 616,630 shares at an average price of $83.89 in the first quarter of 2024. We view share buybacks opportunistically, but within the context of maintaining our strong capital position.

•The Company paid a regular cash dividend of $35.3 million or $0.55 per common share during the second quarter of 2024. On July 30, 2024, the board of directors approved a quarterly cash dividend of $0.55 per common share payable on or about August 30, 2024 to shareholders of record as of August 15, 2024.

Highlights of the six months ended June 30, 2024 compared to the six months ended June 30, 2023 included:

•Net interest income totaled $589.6 million for the six months ended June 30, 2024 and $674.6 million for the six months ended June 30, 2023. Net interest income decreased $71.6 million from changes in interest rates and decreased $13.6 million from changes in earning assets. Net interest margin was 2.59% compared to 3.22%. In response to rising inflation, the Federal Reserve increased the federal funds rate 525 basis points since the beginning of 2022. The resulting impact on market interest rates increased net interest margin at first as our earning assets, led by our significant percentage of variable-rate commercial loans, repriced at a higher rate and faster pace than our interest-bearing liabilities. Throughout 2023 and into the second quarter of 2024, we have experienced margin compression reflecting deposit repricing activity and demand deposit migration into interest-bearing accounts. Loan yields increased 55 basis points while funding costs increased 125 basis points. Average earning assets increased $3.7 billion to $45.4 billion driven largely by higher average loan balances and trading securities balances. Total interest-bearing deposits increased $5.6 billion, offset by a decrease of $3.2 billion in demand deposit balances. Other borrowed funds increased $930 million.

•Fees and commissions revenue totaled $400.6 million for the six months ended June 30, 2024, a $14.1 million increase over the six months ended June 30, 2023. Fiduciary and asset management revenue increased $9.2 million led by growth in trust fees and Cavanal Hill fund fees. Mortgage banking revenue increased $8.1 million, primarily due to higher production volume. Deposit service charges increased $5.2 million due to growth in commercial service charges. Brokerage and trading revenue decreased $5.2 million, largely due to decreased customer hedging revenue, primarily attributed to our energy and interest rate derivative customers. The prior period included $6.2 million of insurance brokerage revenue recognized prior to the sale of BOKFI. This decrease was fully offset by an increase of $6.9 million in investment banking revenue driven by growth in underwriting fees and financial advisory fees. Other revenue decreased $4.3 million, primarily due to a reduction in fees earned on derivative counterparty margin.

•Total operating expense was $677.1 million for the six months ended June 30, 2024, an increase of $52.6 million compared to the six months ended June 30, 2023. Personnel expense increased $20.9 million. Regular compensation increased $11.7 million, largely related to annual merit increases, salary adjustments, and business expansion in 2023. Employee benefits expense increased $5.8 million related to higher employee healthcare costs and retirement plan costs. Incentive compensation expense was up $3.4 million, primarily due to higher loan and trading volumes and deferred compensation expense, which is largely offset by changes in fair value of deferred compensation investments. Non-personnel expense increased $31.6 million to $283.3 million. Charitable contributions to the BOKF Foundation increased $12.5 million, largely due to the donation of Visa shares valued at $10.0 million. FDIC insurance costs grew due to recognition of $7.6 million in additional special assessment expense during 2024. Other expense also increased $6.7 million due to higher operational losses.

•The provision for expected credit losses was $16.0 million for the six months ended June 30, 2024, reflecting growth in loan balances and a stable economic forecast. A $33.0 million provision for expected credit losses was recorded for the six months ended June 30, 2023.

1    See Explanation and Reconciliation of Non-GAAP Measures in "Non-GAAP Measures" section following.

- 3 -

Results of Operations

Net Interest Income and Net Interest Margin

Net interest income is the interest earned on debt securities, loans and other interest-earning assets less interest paid for interest-bearing deposits and other borrowings. The net interest margin is calculated by dividing tax-equivalent net interest income by average interest-earning assets. Net interest spread is the difference between the average rate earned on interest-earning assets and the average rate paid on interest-bearing liabilities. Net interest margin is typically greater than net interest spread due to interest revenue earned on assets funded by non-interest bearing liabilities such as demand deposits and equity.

Tax-equivalent net interest income totaled $298.2 million for the second quarter of 2024, compared to $295.7 million for the prior quarter. Net interest income increased $2.5 million from changes in interest rates and increased $49 thousand from changes in earning assets. Table 1 shows the effect on net interest income from changes in average balances and interest rates for various types of earning assets and interest-bearing liabilities.

Average earning assets increased $1.2 billion compared to the first quarter of 2024. Average loan balances increased $437 million, largely due to growth in commercial loans, partially offset by a reduction in commercial real estate loans. The average balance of available for sale securities, which consists largely of residential and commercial mortgage-backed securities guaranteed by U.S. government agencies, increased $218 million while the average balance of trading securities increased $552 million.

Total average deposits increased $627 million over the first quarter of 2024, including an $872 million increase in interest-bearing deposits, partially offset by a $244 million decrease in demand deposits. Funds purchased and repurchase agreements grew $580 million while other borrowings increased $307 million.

Net interest margin was 2.56% compared to 2.61% in the first quarter of 2024. The pace of demand deposit migration and deposit repricing has slowed compared to the previous quarter and was offset by improving yields on the available for sale securities portfolio. For the second quarter of 2024, our core net interest margin excluding trading activities1, a non-GAAP measure, was 2.94% compared to 2.97% in the prior quarter. The tax-equivalent yield on earning assets was 5.80%, an increase of 7 basis points. The available for sale securities portfolio yield increased 23 basis points to 3.71%. Loan yields grew 1 basis point to 7.41%. The yield on trading securities decreased 6 basis points to 5.06% and the yield on interest-bearing cash and cash equivalents increased 90 basis points to 5.86%.

Funding costs were 4.15%, a 7 basis point increase over the prior quarter. The cost of interest-bearing deposits increased 7 basis points to 3.76%. The cost of funds purchased and repurchase agreements increased 23 basis points to 4.28% while the cost of other borrowings increased 2 basis points to 5.58%. The benefit to net interest margin from assets funded by non-interest liabilities was 91 basis points, a decrease of 5 basis points.

Our overall objective is to manage the Company's balance sheet for changes in interest rates as is further described in the Market Risk section of this report. Approximately 81% of our commercial and commercial real estate loan portfolios are either variable rate or fixed rate that will reprice within one year. These loans are funded primarily by deposit accounts that are either non-interest bearing, or that reprice more slowly than the loans. The result is a balance sheet that is asset sensitive, which means that assets generally reprice more quickly than the liabilities. One of the strategies that we use to manage toward a relative rate-neutral position is to purchase fixed-rate residential mortgage-backed securities issued primarily by U.S. government agencies and fund them with market rate-sensitive liabilities. The liability-sensitive nature of this strategy provides an offset to the asset-sensitive characteristics of our loan portfolio. We also may use derivative instruments to manage our interest rate risk. 

The effectiveness of these strategies is reflected in the overall change in net interest income due to changes in interest rates as shown in Table 1 and in the interest rate sensitivity projections as shown in the Market Risk section of this report.

1    See Explanation and Reconciliation of Non-GAAP Measures in "Non-GAAP Measures" section following.

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Table 1 – Volume/Rate Analysis

(In thousands)

	Three Months Ended June 30, 2024 / Mar. 31, 2024						Six Months Ended June 30, 2024 / 2023
			Change Due To1						Change Due To1
	Change		Volume		Yield/Rate		Change		Volume		Yield/Rate
Tax-equivalent interest revenue:
Interest-bearing cash and cash equivalents	$	771	$	(459)	$	1,230	$	(1,277)	$	(2,841)	$	1,564
Trading securities	6,556		7,358		(802)		61,201		47,624		13,577
Investment securities	(265)		(207)		(58)		(2,233)		(2,041)		(192)
Available for sale securities	10,323		3,014		7,309		53,548		11,811		41,737
Fair value option securities	(1)		(6)		5		(6,620)		(5,504)		(1,116)
Restricted equity securities	334		639		(305)		5,813		4,517		1,296
Residential mortgage loans held for sale	425		380		45		200		(2)		202
Loans	8,558		7,998		560		119,112		53,795		65,317
Total tax-equivalent interest revenue	26,701		18,717		7,984		229,744		107,359		122,385
Interest expense:
Transaction deposits	11,341		6,851		4,490		211,695		61,896		149,799
Savings deposits	(8)		(22)		14		1,662		(195)		1,857
Time deposits	1,296		1,562		(266)		51,580		28,463		23,117
Funds purchased and repurchase agreements	6,880		6,002		878		(24,147)		(24,256)		109
Other borrowings	4,653		4,276		377		73,829		55,064		18,765
Subordinated debentures	(6)		—		(6)		330		5		325
Total interest expense	24,156		18,669		5,487		314,949		120,977		193,972
Tax-equivalent net interest income	2,545		48		2,497		(85,205)		(13,618)		(71,587)
Change in tax-equivalent adjustment	96						(189)
Net interest income	$	2,449					$	(85,016)

1 Changes attributable to both volume and yield/rate are allocated to both volume and yield/rate on an equal basis.

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Other Operating Revenue

Other operating revenue was $259.7 million for the second quarter of 2024, an increase of $98.0 million over the first quarter of 2024. The second quarter of 2024 included $53.8 million pre-tax gain on the conversion of our Visa B shares under the recently announced exchange offer by Visa, Inc. The prior quarter included $45.2 million of losses from repositioning the available for sale securities portfolio.

Table 2 – Other Operating Revenue 

(Dollars in thousands)

	Three Months Ended				Increase (Decrease)		% Increase (Decrease)		Six Months Ended				Increase (Decrease)		% Increase (Decrease)
	June 30, 2024		Mar. 31, 2024						June 30, 2024		June 30, 2023
Brokerage and trading revenue	$	53,017	$	59,179	$	(6,162)	(10)	%	$	112,196	$	117,402	$	(5,206)	(4)	%
Transaction card revenue	27,246		25,493		1,753		7	%	52,739		51,624		1,115		2	%
Fiduciary and asset management revenue	57,576		55,305		2,271		4	%	112,881		103,654		9,227		9	%
Deposit service charges and fees	29,572		28,685		887		3	%	58,257		53,068		5,189		10	%
Mortgage banking revenue	18,628		18,967		(339)		(2)	%	37,595		29,508		8,087		27	%
Other revenue	13,988		12,935		1,053		8	%	26,923		31,220		(4,297)		(14)	%
Total fees and commissions revenue	200,027		200,564		(537)		—	%	400,591		386,476		14,115		4	%
Other gains, net	57,375		4,269		53,106		N/A		61,644		14,869		46,775		N/A
Loss on derivatives, net	(1,091)		(8,633)		7,542		N/A		(9,724)		(9,503)		(221)		N/A
Loss on fair value option securities, net	(94)		(305)		211		N/A		(399)		(5,120)		4,721		N/A
Change in fair value of mortgage servicing rights	3,453		10,977		(7,524)		N/A		14,430		3,202		11,228		N/A
Gain (loss) on available for sale securities, net	34		(45,171)		45,205		N/A		(45,137)		(3,010)		(42,127)		N/A
Total other operating revenue	$	259,704	$	161,701	$	98,003	61	%	$	421,405	$	386,914	$	34,491	9	%

Certain percentage increases (decreases) in non-fees and commissions revenue are not meaningful for comparison purposes based on the nature of the item.

Fees and Commissions Revenue

Diversified sources of fees and commissions revenue are a significant part of our business strategy and represented 40% of combined net interest income before provision for credit losses and fees and commissions revenue for the second quarter of 2024. We believe that a variety of fee revenue sources provides diversification to changes resulting from market or economic conditions such as interest rates, values in the equity markets, commodity prices and consumer spending, all of which can be volatile. Many of the economic factors, such as decreasing interest rates, that we expect will result in a decline in net interest income or fiduciary and asset management revenue may also increase mortgage banking production volumes and related trading. The velocity of changes in market conditions and interest rates may result in timing differences between when offsetting impacts and benefits are realized. Generally, for operating revenues not as directly related to movement in interest rates, we expect growth to come through offering new products and services and by further development of our presence in other markets. However, current and future economic conditions, regulatory constraints, increased competition and saturation in our existing markets could affect the rate of future increases.

Brokerage and Trading Revenue

Brokerage and trading revenue, which includes revenues from trading, customer hedging, retail brokerage and investment banking, decreased $6.2 million compared to the first quarter of 2024.

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Trading revenue includes net realized and unrealized gains and losses primarily related to residential mortgage-backed securities guaranteed by U.S. government agencies and related derivative instruments that enable our mortgage banking customers to manage their production risk. Trading revenue also includes net realized and unrealized gains and losses on municipal securities and other financial instruments that we sell to institutional customers, along with changes in the fair value of financial instruments we hold as economic hedges against market risk of our trading securities. Trading revenue was $27.7 million, a $9.8 million decrease compared to the prior quarter, driven by margin compression due to market conditions in the second quarter of 2024.

Customer hedging revenue is based primarily on realized and unrealized changes in the fair value of derivative contracts held for customer risk management programs. As more fully discussed under Customer Risk Management Programs in Note 3 of the Consolidated Financial Statements, we offer commodity, interest rate, foreign exchange and equity derivatives to our customers. Customer hedging revenue totaled $6.8 million for the second quarter of 2024 and was relatively consistent with the prior quarter. Customer hedging revenue includes credit valuation adjustments of the fair value of derivatives to reflect the risk of counterparty default.

Investment banking, which includes fees earned upon completion of underwriting, financial advisory services and loan syndication fees, totaled $13.7 million, an increase of $3.0 million over the first quarter of 2024, largely related to the timing and volume of completed underwriting and loan syndication transactions.

Transaction Card Revenue

Transaction card revenue includes revenues from processing transactions on behalf of members of our TransFund electronic fund transfer network, merchant services fees paid by customers for account management and electronic processing of card transactions and interchange fees from our corporate card program. Transaction card revenue totaled $27.2 million for the second quarter of 2024, a $1.8 million increase, primarily due to growth in the volume of transactions processed during the quarter.

Fiduciary and Asset Management Revenue

Fiduciary and asset management revenue is earned through managing or holding of assets for customers and executing transactions or providing related services. Fiduciary and asset management revenue is largely based on the fair value of assets. Rates applied to asset values vary based on the nature of the relationship. Fiduciary relationships and managed asset relationships generally have higher fee rates than non-fiduciary and/or managed relationships. Fiduciary and asset management revenue was $57.6 million for the second quarter of 2024, a $2.3 million increase over the first quarter of 2024, led by higher seasonal tax preparation fee income.

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A distribution of assets under management or administration and related fiduciary and asset management revenue follows:

Table 3 – Assets Under Management or Administration

(Dollars in thousands)

	Three Months Ended
	June 30, 2024						March 31, 2024
	Balance1		Revenue2		Margin3		Balance1		Revenue2		Margin3
Managed fiduciary assets:
Personal	$	11,479,779	$	30,098	1.05	%	$	11,288,591	$	27,938	0.99	%
Institutional	20,019,267		8,552		0.17	%	19,680,708		11,770		0.24	%
Total managed fiduciary assets	31,499,046		38,650		0.49	%	30,969,299		39,708		0.51	%
Non-managed assets:
Fiduciary	30,418,648		15,808		0.21	%	29,395,993		12,951		0.18	%
Non-fiduciary	20,031,316		3,118		0.06	%	19,384,953		2,646		0.05	%
Safekeeping and brokerage assets under administration	25,528,020		—		—	%	25,780,658		—		—	%
Total non-managed assets	75,977,984		18,926		0.10	%	74,561,604		15,597		0.08	%
Total assets under management or administration	$	107,477,030	$	57,576	0.21	%	$	105,530,903	$	55,305	0.21	%

	Six Months Ended
	June 30, 2024						June 30, 2023
	Balance1		Revenue2		Margin3		Balance1		Revenue2		Margin3
Managed fiduciary assets:
Personal	$	11,479,779	$	58,036	1.01	%	$	10,687,370	$	51,580	0.97	%
Institutional	20,019,267		20,322		0.20	%	18,705,828		18,326		0.20	%
Total managed fiduciary assets	31,499,046		78,358		0.50	%	29,393,198		69,906		0.48	%
Non-managed assets:
Fiduciary	30,418,648		28,759		0.19	%	28,480,670		28,085		0.20	%
Non-fiduciary	20,031,316		5,764		0.06	%	20,910,245		5,663		0.05	%
Safekeeping and brokerage assets under administration	25,528,020		—		—	%	24,834,827		—		—	%
Total non-managed assets	75,977,984		34,523		0.09	%	74,225,742		33,748		0.09	%
Total assets under management or administration	$	107,477,030	$	112,881	0.21	%	$	103,618,940	$	103,654	0.20	%

1    Assets under management or administration balance excludes certain assets under custody held by a sub-custodian where minimal revenue is recognized. $21 billion, $20 billion, and $19 billion of such assets are excluded from assets under management or administration at June 30, 2024, March 31, 2024, and June 30, 2023, respectively.

2    Fiduciary and asset management revenue includes asset-based and other fees associated with the assets.

3    Annualized revenue divided by period end balance.

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A summary of changes in assets under management or administration for the three and six months ended June 30, 2024 and 2023 follows:

Table 4 – Changes in Assets Under Management or Administration

(In thousands)

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Beginning balance	$	105,530,903	$	102,310,119	$	104,736,999	$	99,735,040
Net inflows (outflows)	532,450		(288,434)		(1,431,258)		(805,352)
Net change in fair value	1,413,677		1,597,255		4,171,289		4,689,252
Ending balance	$	107,477,030	$	103,618,940	$	107,477,030	$	103,618,940

Assets under management as of June 30, 2024 consist of 42% fixed income, 35% equities, 15% cash, and 8% alternative investments.

Deposit Service Charges

Deposit service charges and fees increased $887 thousand or 3% over the first quarter of 2024, primarily due to growth in commercial service charges and check card fees.

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Mortgage Banking Revenue

Mortgage banking revenue was relatively consistent with the first quarter of 2024. Mortgage production volume increased $63 million to $235 million. Production revenue as a percentage of production volume, which includes unrealized gains and losses on our mortgage commitment pipeline and related hedges, decreased 104 basis points to 1.01%.

Table 5 – Mortgage Banking Revenue 

(Dollars in thousands)

	Three Months Ended						Increase (Decrease)			% Increase (Decrease)		Six Months Ended						Increase (Decrease)			% Increase (Decrease)
	June 30, 2024			Mar. 31, 2024								June 30, 2024			June 30, 2023
Mortgage production revenue	$	2,369		$	3,525		$	(1,156)		(33)	%	$	5,894		$	(917)		$	6,811		743	%
Mortgage loans funded for sale	$	240,038		$	139,176							$	379,214		$	353,409
Add: Current period end outstanding commitments	62,960			67,951								62,960			55,031
Less: Prior period end outstanding commitments	67,951			34,783								34,783			45,492
Total mortgage production volume	$	235,047		$	172,344		$	62,703		36	%	$	407,391		$	362,948		$	44,443		12	%
Mortgage loan refinances to mortgage loans funded for sale	7		%	10		%	(300)		bps			8		%	9		%	(100)		bps
Realized margin on funded mortgage loans	0.97		%	1.46		%	(49)		bps			1.15		%	(0.57)		%	172		bps
Production revenue as a percentage of production volume	1.01		%	2.05		%	(104)		bps			1.45		%	(0.25)		%	170		bps
Primary mortgage interest rates:
Average	7.00		%	6.73		%	27		bps			6.86		%	6.45		%	41		bps
Period end	6.86		%	6.79		%	7		bps			6.86		%	6.70		%	16		bps
Mortgage servicing revenue	$	16,259		$	15,442		$	817		5	%	$	31,701		$	30,425		$	1,276		4	%
Average outstanding principal balance of mortgage loans serviced for others	$	22,287,559		$	21,088,898		$	1,198,661		6	%	$	21,688,229		$	20,964,181		$	724,048		3	%
Average mortgage servicing revenue rates	0.29		%	0.29		%	—		bp			0.29		%	0.29		%	—		bp

Primary rates disclosed in Table 5 above represent rates generally available to borrowers on 30 year conforming mortgage loans.

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Net Gains on Other Assets, Securities and Derivatives

Other gains, net, were $57.4 million for the second quarter of 2024 compared to $4.3 million in the first quarter of 2024. The second quarter of 2024 included a $53.8 million pre-tax gain on the conversion of our Visa B shares under the recently announced exchange offer by Visa, Inc. The gain offsets losses of $45.2 million on the repositioning of the available for sale securities portfolio realized in the first quarter of 2024. We donated 35,620 of the converted Visa shares valued at $10.0 million to the BOKF Foundation during the second quarter of 2024, allowing us to further invest in the communities we serve.

As discussed in the Market Risk section following, the fair value of our MSRs changes in response to changes in primary mortgage loan rates and other assumptions. We attempt to mitigate the earnings volatility caused by changes in the fair value of MSRs by designating certain financial instruments as an economic hedge. Changes in the fair value of these instruments are generally expected to partially offset changes in the fair value of MSRs.

Table 6 – Gain (Loss) on Mortgage Servicing Rights

(In thousands)

	Three Months Ended				Six Months Ended
	June 30, 2024		Mar. 31, 2024		June 30, 2024		June 30, 2023
Loss on mortgage hedge derivative contracts, net	$	(3,484)	$	(9,357)	$	(12,841)	$	(9,810)
Loss on fair value option securities, net	(94)		(305)		(399)		(5,120)
Loss on economic hedge of mortgage servicing rights, net	(3,578)		(9,662)		(13,240)		(14,930)
Gain on change in fair value of mortgage servicing rights	3,453		10,977		14,430		3,202
Gain (loss) on changes in fair value of mortgage servicing rights, net of economic hedges included in other operating revenue	(125)		1,315		1,190		(11,728)
Net interest expense on fair value option securities1	(96)		(155)		(251)		(45)
Total economic benefit (cost) of changes in the fair value of mortgage servicing rights, net of economic hedges	$	(221)	$	1,160	$	939	$	(11,773)

1    Actual interest earned on fair value option securities less internal transfer-priced cost of funds.

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Other Operating Expense

Other operating expense for the second quarter of 2024 totaled $336.7 million, a decrease of $3.7 million compared to the first quarter of 2024. Our efficiency ratio1 was 59.83% for the second quarter of 2024, compared to 67.13% in the prior quarter.

Table 7 – Other Operating Expense

(Dollars in thousands)

	Three Months Ended				Increase (Decrease)		% Increase (Decrease)		Six Months Ended				Increase (Decrease)		% Increase (Decrease)
	June 30, 2024		Mar. 31, 2024						June 30, 2024		June 30, 2023
Regular compensation	$	112,056	$	113,913	$	(1,857)	(2)	%	$	225,969	$	214,315	$	11,654	5	%
Incentive compensation:
Cash-based	42,861		49,956		(7,095)		(14)	%	92,817		90,066		2,751		3	%
Share-based	4,989		3,305		1,684		51	%	8,294		9,823		(1,529)		(16)	%
Deferred compensation	2,171		4,450		(2,279)		N/A		6,621		4,395		2,226		N/A
Total incentive compensation	50,021		57,711		(7,690)		(13)	%	107,732		104,284		3,448		3	%
Employee benefits	29,013		31,029		(2,016)		(7)	%	60,042		54,198		5,844		11	%
Total personnel expense	191,090		202,653		(11,563)		(6)	%	393,743		372,797		20,946		6	%
Business promotion	8,250		7,978		272		3	%	16,228		16,209		19		—	%
Charitable contributions to BOKF Foundation	13,610		—		13,610		N/A		13,610		1,142		12,468		N/A
Professional fees and services	13,331		12,010		1,321		11	%	25,341		25,825		(484)		(2)	%
Net occupancy and equipment	30,245		30,293		(48)		—	%	60,538		58,564		1,974		3	%
FDIC and other insurance	7,317		8,740		(1,423)		(16)	%	16,057		14,289		1,768		12	%
FDIC special assessment	1,190		6,454		(5,264)		(82)	%	7,644		—		7,644		N/A
Data processing and communications	46,131		45,564		567		1	%	91,695		90,109		1,586		2	%
Printing, postage and supplies	3,789		3,997		(208)		(5)	%	7,786		7,621		165		2	%
Amortization of intangible assets	2,898		3,003		(105)		(4)	%	5,901		6,865		(964)		(14)	%
Mortgage banking costs	8,532		6,355		2,177		34	%	14,887		14,082		805		6	%
Other expense	10,307		13,337		(3,030)		(23)	%	23,644		16,982		6,662		39	%
Total other operating expense	$	336,690	$	340,384	$	(3,694)	(1)	%	$	677,074	$	624,485	$	52,589	8	%
Average number of employees (full-time equivalent)	4,967		4,936		31		1	%	4,952		4,820		132		3	%

Certain percentage increases (decreases) are not meaningful for comparison purposes.

Personnel Expense

Personnel expense decreased $11.6 million compared to the first quarter of 2024. Cash-based incentive compensation decreased $7.1 million due to a shift in the timing of expense recognition as commercial incentive compensation plans move to being primarily share-based rather than cash-based awards. Deferred compensation, which is offset by changes in the fair value of deferred compensation investments, decreased $2.3 million, directly related to market movements. Employee benefits expense decreased $2.0 million due to a seasonal decrease in payroll taxes, partially offset by higher healthcare costs. Regular compensation decreased $1.9 million. A greater amount of compensation expense was capitalized during the second quarter due to an annual update of standards costs for loan originations coupled with an increase in mortgage loan production volume. Share-based compensation was up $1.7 million reflecting changes in assumptions of certain performance-based equity awards.

1    See Explanation and Reconciliation of Non-GAAP Measures in "Non-GAAP Measures" section following.

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Non-personnel Operating Expense

Non-personnel expense was $145.6 million, an increase of $7.9 million. In addition to the $10.0 million share donation previously mentioned, we also made a $3.6 million contribution to the BOKF Foundation in the second quarter of 2024. Mortgage banking costs increased $2.2 million due to higher seasonal prepayments, and a rise in professional fees and services expense of $1.3 million was primarily due to project related expense. In the second quarter of 2024, we recognized $1.2 million of expense related to the FDIC special assessment compared to $6.5 million of expense in the prior quarter. Other expense decreased $3.0 million due to lower operational losses.

Income Taxes

The effective tax rate was 22.41% for the second quarter of 2024, 21.70% for the first quarter of 2024 and 22.49% for the second quarter of 2023. When compared to the first quarter of 2024, the effective tax rate increased due to higher forecasted and actual pre-tax income. The effective rate for the six months ended June 30, 2024 and June 30, 2023 was 22.17% and 22.25%, respectively.

Lines of Business

We operate three principal lines of business: Commercial Banking, Consumer Banking and Wealth Management. Commercial Banking includes lending, treasury and cash management services and customer risk management products for small businesses, middle market and larger commercial customers. Commercial Banking also includes the TransFund EFT network. Consumer Banking includes retail lending and deposit services, lending and deposit services to small business customers served through our consumer branch network and all mortgage banking activities. Wealth Management provides fiduciary services, private banking services and investment advisory services in all markets. Wealth Management also underwrites state and municipal securities and engages in brokerage and trading activities.

In addition to our lines of business, we have a Funds Management unit. The primary purpose of this unit is to manage our overall liquidity needs and interest rate risk. Each line of business borrows funds from and provides funds to the Funds Management unit as needed to support their operations. Operating results for Funds Management and other include the effect of interest rate risk positions and risk management activities, securities gains and losses including impairment charges, the provision for credit losses in excess of net loans charged off, tax planning strategies and certain executive compensation costs that are not attributed to the lines of business. The Funds Management unit also initially recognizes accruals for loss contingencies when losses become probable. Actual losses are recognized by the lines of business if the accruals are settled.

We allocate resources and evaluate the performance of our lines of business using the net direct contribution, which includes the allocation of funds and capital costs. Credit costs are attributed to the lines of business based on net loans charged off or recovered. The difference between credit costs attributed to the lines of business and the consolidated provision for credit losses is attributed to Funds Management. In addition, we measure the performance of our business lines after allocations of certain indirect expenses and taxes based on statutory rates.

Net interest income in our lines of business reflects our internal funds transfer pricing methodology. The funds transfer pricing methodology is the process by which the Company allocates interest income and expense to the lines of business and transfers the primary interest rate risk and liquidity risk to the Funds Management unit. The funds transfer pricing methodology considers the interest rate and liquidity risk characteristics of assets and liabilities. Periodically, the methodology and assumptions utilized in transfer pricing are adjusted to reflect economic conditions and other factors, which may impact the allocation of net interest income to the lines of business.

Economic capital is assigned to the business units by a capital allocation model that reflects management's assessment of risk. This model assigns capital based upon credit, operating, interest rate and other market risk inherent in our business lines and recognizes the diversification benefits among the units. The level of assigned economic capital is a combination of the risk taken by each business line based on its actual exposures and calibrated to its own loss history where possible. Average invested capital includes economic capital and amounts we have invested in the lines of business.

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As shown in Table 8, net income attributable to our lines of business was consistent with the first quarter of 2024. Net interest income increased $1.9 million largely as a result of deposit repricing activity. Net loans charged off increased $1.4 million to $7.4 million. Operating revenue was relatively unchanged compared to the prior quarter and operating expense decreased $1.4 million. The increase in net income attributed to Funds Management and other is largely due to the $53.8 million pre-tax gain recognized on the conversion of our Visa B shares. The prior quarter included losses of $45.2 million on the repositioning of the available for sale securities portfolio.

Table 8 – Net Income by Line of Business

(Dollars in thousands)

	Three Months Ended				Increase (Decrease)		% Increase (Decrease)		Six Months Ended				Increase (Decrease)		% Increase (Decrease)
	June 30, 2024		Mar. 31, 2024						June 30, 2024		June 30, 2023
Commercial Banking	$	119,563	$	121,797	$	(2,234)	(2)	%	$	241,360	$	287,448	$	(46,088)	(16)	%
Consumer Banking	24,117		24,731		(614)		(2)	%	48,848		44,114		4,734		11	%
Wealth Management	27,497		25,228		2,269		9	%	52,725		83,886		(31,161)		(37)	%
Subtotal	171,177		171,756		(579)		—	%	342,933		415,448		(72,515)		(17)	%
Funds Management and other	(7,464)		(88,053)		80,589		N/A		(95,517)		(101,772)		6,255		N/A
Total	$	163,713	$	83,703	$	80,010	96	%	$	247,416	$	313,676	$	(66,260)	(21)	%

Certain percentage increases (decreases) in non-fees and commissions revenue are not meaningful for comparison purposes based on the nature of the item.

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Commercial Banking

Commercial Banking contributed $119.6 million to consolidated net income in the second quarter of 2024, a decrease of $2.2 million or 2% compared to the first quarter of 2024.

Table 9 – Commercial Banking

(Dollars in thousands)

	Three Months Ended				Increase (Decrease)		% Increase (Decrease)		Six Months Ended				Increase (Decrease)		% Increase (Decrease)
	June 30, 2024		Mar. 31, 2024						June 30, 2024		June 30, 2023
Net interest income from external sources	$	283,328	$	282,756	$	572	—	%	$	566,084	$	587,970	$	(21,886)	(4)	%
Net interest expense from internal sources	(79,593)		(78,761)		(832)		(1)	%	(158,354)		(139,134)		(19,220)		(14)	%
Total net interest income	203,735		203,995		(260)		—	%	407,730		448,836		(41,106)		(9)	%
Net loans charged off	6,134		4,160		1,974		47	%	10,294		6,076		4,218		69	%
Net interest income after net loans charged off	197,601		199,835		(2,234)		(1)	%	397,436		442,760		(45,324)		(10)	%
Fees and commissions revenue	53,720		50,630		3,090		6	%	104,350		115,539		(11,189)		(10)	%
Other gains (losses), net	816		(624)		1,440		231	%	192		10,134		(9,942)		(98)	%
Other operating revenue	54,536		50,006		4,530		9	%	104,542		125,673		(21,131)		(17)	%
Personnel expense	45,964		45,319		645		1	%	91,283		88,874		2,409		3	%
Non-personnel expense	30,150		24,776		5,374		22	%	54,926		61,819		(6,893)		(11)	%
Other operating expense	76,114		70,095		6,019		9	%	146,209		150,693		(4,484)		(3)	%
Net direct contribution	176,023		179,746		(3,723)		(2)	%	355,769		417,740		(61,971)		(15)	%
Gain on financial instruments, net	168		167		1		1	%	335		173		162		94	%
Gain on repossessed assets, net	—		—		—		N/A		—		1,267		(1,267)		N/A
Corporate expense allocations	17,381		18,397		(1,016)		(6)	%	35,778		39,122		(3,344)		(9)	%
Income before taxes	158,810		161,516		(2,706)		(2)	%	320,326		380,058		(59,732)		(16)	%
Federal and state income tax	39,247		39,719		(472)		(1)	%	78,966		92,610		(13,644)		(15)	%
Net income	$	119,563	$	121,797	$	(2,234)	(2)	%	$	241,360	$	287,448	$	(46,088)	(16)	%
Average assets	$	30,305,613	$	29,806,817	$	498,796	2	%	$	30,056,215	$	28,166,923	$	1,889,292	7	%
Average loans	20,403,837		20,067,170		336,667		2	%	20,235,503		18,955,834		1,279,669		7	%
Average deposits	16,189,003		15,730,241		458,762		3	%	15,959,622		15,338,818		620,804		4	%
Average invested capital	2,154,515		2,176,950		(22,435)		(1)	%	2,168,600		2,146,562		22,038		1	%

Certain percentage increases (decreases) in non-fees and commissions revenue are not meaningful for comparison purposes based on the nature of the item.

Net interest income was consistent compared to the first quarter of 2024. Net loans charged-off were $6.1 million in the second quarter of 2024 compared to $4.2 million in the first quarter of 2024.

Fees and commissions revenue increased $3.1 million or 6%. Transaction card revenue increased $1.9 million driven by an increase in transaction volume processed during the quarter. Other gains (losses), net increased $1.4 million related to gains on alternative investments. Operating expense increased $6.0 million or 9% compared to the first quarter of 2024, primarily due to an increase in other expense. Personnel expense was consistent with the prior quarter.

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Average outstanding balance of loans attributed to Commercial Banking increased $337 million or 2% over the first quarter of 2024 to $20.4 billion. See the Loans section of Management's Discussion and Analysis of Financial Condition following for additional discussion of changes in commercial and commercial real estate loans, which are primarily attributed to the Commercial Banking segment. 

Average deposits attributed to Commercial Banking increased $459 million or 3% over the first quarter of 2024 to $16.2 billion. See Management's Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital for further discussion of changes.

Consumer Banking

Consumer Banking provides retail banking services through four primary distribution channels: traditional branches, the 24-hour ExpressBank call center, internet banking and mobile banking. Consumer Banking also conducts mortgage banking activities through offices located outside of our Consumer Banking markets.

Consumer Banking contributed $24.1 million to consolidated net income for the second quarter of 2024, consistent with the prior quarter.

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Table 10 – Consumer Banking

(Dollars in thousands)

	Three Months Ended				Increase (Decrease)		% Increase (Decrease)		Six Months Ended				Increase (Decrease)		% Increase (Decrease)
	June 30, 2024		Mar. 31, 2024						June 30, 2024		June 30, 2023
Net interest income from external sources	$	6,192	$	7,350	$	(1,158)	(16)	%	$	13,542	$	38,974	$	(25,432)	(65)	%
Net interest income from internal sources	58,972		56,785		2,187		4	%	115,757		96,324		19,433		20	%
Total net interest income	65,164		64,135		1,029		2	%	129,299		135,298		(5,999)		(4)	%
Net loans charged off	1,247		1,808		(561)		(31)	%	3,055		2,313		742		32	%
Net interest income after net loans charged off	63,917		62,327		1,590		3	%	126,244		132,985		(6,741)		(5)	%
Fees and commissions revenue	36,252		36,207		45		—	%	72,459		62,942		9,517		15	%
Other losses, net	—		—		—		N/A		—		(55)		55		N/A
Other operating revenue	36,252		36,207		45		—	%	72,459		62,887		9,572		15	%
Personnel expense	24,016		25,236		(1,220)		(5)	%	49,252		43,830		5,422		12	%
Non-personnel expense	31,112		28,211		2,901		10	%	59,323		58,708		615		1	%
Total other operating expense	55,128		53,447		1,681		3	%	108,575		102,538		6,037		6	%
Net direct contribution	45,041		45,087		(46)		—	%	90,128		93,334		(3,206)		(3)	%
Loss on financial instruments, net	(3,577)		(9,663)		6,086		63	%	(13,240)		(14,930)		1,690		11	%
Change in fair value of mortgage servicing rights	3,453		10,977		(7,524)		(69)	%	14,430		3,202		11,228		351	%
Gain on repossessed assets, net	9		107		(98)		(92)	%	116		14		102		729	%
Corporate expense allocations	13,392		14,172		(780)		(6)	%	27,564		23,940		3,624		15	%
Income before taxes	31,534		32,336		(802)		(2)	%	63,870		57,680		6,190		11	%
Federal and state income tax	7,417		7,605		(188)		(2)	%	15,022		13,566		1,456		11	%
Net income	$	24,117	$	24,731	$	(614)	(2)	%	$	48,848	$	44,114	$	4,734	11	%
Average assets	$	9,630,470	$	9,391,981	$	238,489	3	%	$	9,511,225	$	9,765,186	$	(253,961)	(3)	%
Average loans	1,975,106		1,913,586		61,520		3	%	1,944,346		1,754,945		189,401		11	%
Average deposits	8,073,782		7,901,167		172,615		2	%	7,987,475		8,116,885		(129,410)		(2)	%
Average invested capital	307,077		295,202		11,875		4	%	303,479		268,143		35,336		13	%

Certain percentage increases (decreases) in non-fees and commissions revenue are not meaningful for comparison purposes based on the nature of the item.

Net interest income from Consumer Banking activities increased by $1.0 million or 2%. Operating revenue was relatively unchanged from the prior quarter. Operating expense increased $1.7 million or 3%, primarily due to an increase in mortgage banking costs resulting from higher seasonal prepayments.

The net cost of the changes in the fair value of mortgage servicing rights and related economic hedges was $221 thousand compared to a net benefit of $1.2 million for the first quarter of 2024.

Average loans increased $62 million or 3% to $2.0 billion over the previous quarter. Average deposits attributed to the Consumer Banking segment increased $173 million to 2% to $8.1 billion. See Management's Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital for further discussion of the changes.

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Wealth Management

Wealth Management contributed $27.5 million to consolidated net income in the second quarter of 2024, an increase of $2.3 million or 9% compared to the first quarter of 2024.

Table 11 – Wealth Management

(Dollars in thousands)

	Three Months Ended				Increase (Decrease)		% Increase (Decrease)		Six Months Ended				Increase (Decrease)		% Increase (Decrease)
	June 30, 2024		Mar. 31, 2024						June 30, 2024		June 30, 2023
Net interest income from external sources	$	2,612	$	6,999	$	(4,387)	(63)	%	$	9,611	$	25,355	$	(15,744)	(62)	%
Net interest income from internal sources	26,889		21,399		5,490		26	%	48,288		44,087		4,201		10	%
Total net interest income	29,501		28,398		1,103		4	%	57,899		69,442		(11,543)		(17)	%
Net loans recovered	—		(15)		15		100	%	(15)		(69)		54		78	%
Net interest income after net loans recovered	29,501		28,413		1,088		4	%	57,914		69,511		(11,597)		(17)	%
Fees and commissions revenue	113,208		118,704		(5,496)		(5)	%	231,912		231,961		(49)		—	%
Other gains (losses), net	—		—		—		N/A		—		(7)		7		N/A
Other operating revenue	113,208		118,704		(5,496)		(5)	%	231,912		231,954		(42)		—	%
Personnel expense	63,669		63,549		120		—	%	127,218		121,285		5,933		5	%
Non-personnel expense	26,545		35,739		(9,194)		(26)	%	62,284		45,057		17,227		38	%
Other operating expense	90,214		99,288		(9,074)		(9)	%	189,502		166,342		23,160		14	%
Net direct contribution	52,495		47,829		4,666		10	%	100,324		135,123		(34,799)		(26)	%
Corporate expense allocations	16,484		14,779		1,705		12	%	31,263		25,310		5,953		24	%
Income before taxes	36,011		33,050		2,961		9	%	69,061		109,813		(40,752)		(37)	%
Federal and state income tax	8,514		7,822		692		9	%	16,336		25,927		(9,591)		(37)	%
Net income	$	27,497	$	25,228	$	2,269	9	%	$	52,725	$	83,886	$	(31,161)	(37)	%
Average assets	$	16,452,098	$	15,759,328	$	692,770	4	%	$	16,105,713	$	12,309,730	$	3,795,983	31	%
Average loans	2,199,747		2,198,803		944		—	%	2,199,275		2,216,345		(17,070)		(1)	%
Average deposits	9,551,307		9,237,965		313,342		3	%	9,394,636		7,488,587		1,906,049		25	%
Average invested capital	319,376		323,172		(3,796)		(1)	%	325,242		304,200		21,042		7	%

Certain percentage increases (decreases) in non-fees and commissions revenue are not meaningful for comparison purposes based on the nature of the item.

Combined net interest income and fee revenue decreased $4.4 million or 3% compared to the first quarter of 2024. Total revenue from institutional trading activities decreased $7.9 million, largely due to compressed margins driven by market conditions during the second quarter. Other revenue decreased $2.0 million. Investment banking revenue increased $2.7 million, primarily due to increased underwriting fees. Fiduciary and asset management revenue grew $2.3 million driven by seasonal tax preparation fee income. Non-personnel expense decreased $9.2 million as the prior quarter included an increased level of operational losses. Personnel expense was consistent with the prior quarter.

Average outstanding loans attributed to the Wealth Management segment were mostly unchanged from the previous quarter. Average Wealth Management deposits increased $313 million or 3% to $9.6 billion. See Management's Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital for further discussion of the changes.

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Financial Condition

Securities

We maintain a securities portfolio to enhance profitability, manage interest rate risk, provide liquidity and comply with regulatory requirements. Securities are classified as trading, held for investment, or available for sale. See Note 2 to the Consolidated Financial Statements for the composition of the securities portfolio as of June 30, 2024 and December 31, 2023.

We hold an inventory of trading securities in support of sales to a variety of customers, including banks, corporations, insurance companies, money managers and others. Trading securities decreased $228 million to $5.2 billion during the second quarter of 2024. As discussed in the Market Risk section of this report, trading activities involve risk of loss from adverse price movement. We mitigate this risk within board-approved limits through the use of derivative contracts, short-sales and other techniques.

At June 30, 2024, the carrying value of investment (held-to-maturity) securities was $2.1 billion, including a $287 thousand allowance for expected credit losses, compared to $2.2 billion at March 31, 2024 with a $299 thousand allowance for expected credit losses. The fair value of investment securities was $1.9 billion at June 30, 2024, a $76 million decrease compared to the prior quarter. Investment securities consist primarily of residential mortgage-backed securities issued by U.S. government agencies, intermediate and long-term, fixed-rate Oklahoma and Texas municipal bonds, and taxable Texas school construction bonds.

Available for sale securities, which may be sold prior to maturity, are carried at fair value. Unrealized gains or losses, net of deferred taxes, are recorded as accumulated other comprehensive income in shareholders' equity. The amortized cost of available for sale securities totaled $13.4 billion at June 30, 2024, a $147 million increase compared to March 31, 2024. At June 30, 2024, the available for sale securities portfolio consisted primarily of U.S. government agency residential mortgage-backed securities and U.S. government agency commercial mortgage-backed securities. Both residential and commercial mortgage-backed securities have credit risk from delinquency or default of the underlying loans. We mitigate this risk by primarily investing in securities issued by U.S. government agencies. Principal and interest payments on the underlying loans are fully guaranteed. Commercial mortgage-backed securities have prepayment penalties similar to commercial loans.

A primary risk of holding residential mortgage-backed securities comes from extension during periods of rising interest rates or contraction in the form of more rapid prepayments during periods of falling interest rates. We evaluate this risk through extensive modeling of risk both before making an investment and throughout the life of the security. Our best estimate of the duration of the combined residential mortgage-backed securities portfolio held in investment and available for sale securities was 3.4 years as of June 30, 2024, consistent with the measure as of March 31, 2024. Management estimates the duration extends to 4.0 years assuming an immediate 200 basis point upward shock. The estimated duration contracts to 2.5 years assuming a 200 basis point decline in the current rate environment. The duration of the total investment portfolio is 3.1 years, extends to 3.5 years in an upward shock of 200 basis points, and contracts to 2.6 years in a down 200 basis point shock scenario. Management also regularly monitors the impact of interest rate risk on the available for sale securities portfolio on our tangible equity ratio under various shock scenarios.

On January 23, 2024, Visa, Inc. stockholders approved an exchange offer which provided holders of Class B-1 shares an option to convert up to 50% of its Class B-1 shares to Visa Class C shares and subsequently to freely transferable Visa Class A common shares subject to certain restrictions and holding period requirements (the "Exchange Offer"). The Exchange Offer opened on April 8, 2024 and expired on May 3, 2024. The Company tendered all of its 252,233 Class B-1 Visa shares under the Exchange Offer and received the equivalent of 200,212 shares of Visa common stock and 126,116 Visa B-2 shares in return. Following the receipt of the Visa common stock, the Company donated 35,620 shares valued at $10.0 million to the BOKF Foundation. This contribution is reported as Charitable contributions to BOKF Foundation in the Consolidated Statement of Earnings with a corresponding gain of $10.0 million in Other gains, net. The Company also sold 31,120 Visa shares realizing a pre-tax gain of $8.7 million. At June 30, 2024, the Company held the equivalent of 133,472 Visa common shares for which the Company recorded an unrealized gain of $34.9 million. These shares are subject to hold restrictions under the Exchange Offer which expire during the third quarter 2024. The Company also recognized income of $174 thousand for dividends received. The B-2 shares carry over the restrictions associated with the former B-1 shares. See Note 6 to the Consolidated Financial Statements.

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Bank-Owned Life Insurance

We have approximately $412 million of bank-owned life insurance at June 30, 2024. This investment is expected to provide a long-term source of earnings to support existing employee benefit programs. Approximately $317 million is held in separate accounts and $95 million represents the cash surrender value of policies held in general accounts and other amounts due from various insurance companies. Our separate account holdings are invested in diversified portfolios of investment-grade fixed income securities and cash equivalents, including U.S. Treasury and agency securities, residential mortgage-backed securities, corporate debt, asset-backed and commercial mortgage-backed securities. The portfolios are managed by unaffiliated professional managers within parameters established in the portfolio's investment guidelines. The cash surrender value of certain life insurance policies is further supported by a stable value wrap, which protects against changes in the fair value of the investments. As of June 30, 2024, the fair value of investments held in separate accounts covered by the stable value wrap was approximately $286 million. Since the underlying fair value of the investments held in separate accounts at June 30, 2024 was below the net book value of the investments, $29 million of cash surrender value was supported by the stable value wrap. The remaining $2 million of fair value held in separate accounts is not supported by the stable value wrap. The stable value wrap is provided by an investment grade financial institution.

Loans

The aggregate loan portfolio before allowance for loan losses totaled $24.6 billion at June 30, 2024, growing $381 million over March 31, 2024, largely due to growth in commercial loans, partially offset by a reduction in commercial real estate loans.

Table 12 – Loans

(In thousands)

	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Commercial:
Healthcare	$	4,231,058	$	4,245,939	$	4,143,233	$	4,083,134	$	3,991,387
Services	3,577,144		3,529,421		3,576,223		3,566,361		3,585,169
Energy	3,451,485		3,443,719		3,437,101		3,490,602		3,508,752
General business	4,363,722		3,913,788		3,647,212		3,579,742		3,449,208
Total commercial	15,623,409		15,132,867		14,803,769		14,719,839		14,534,516
Commercial real estate:
Multifamily	1,997,282		1,960,839		1,872,760		1,734,688		1,502,971
Industrial	1,214,991		1,343,970		1,475,165		1,432,629		1,349,709
Office	876,897		901,105		909,442		981,876		1,005,660
Retail	547,706		543,735		592,632		608,073		617,886
Residential construction and land development	88,252		83,906		95,052		100,465		106,370
Other commercial real estate	358,447		403,122		392,596		383,569		388,205
Total commercial real estate	5,083,575		5,236,677		5,337,647		5,241,300		4,970,801
Loans to individuals:
Residential mortgage	2,281,226		2,192,584		2,160,640		2,090,992		1,993,690
Residential mortgage guaranteed by U.S. government agencies	131,825		139,456		149,807		161,092		186,170
Personal	1,433,546		1,470,976		1,453,105		1,510,795		1,552,482
Total loans to individuals	3,846,597		3,803,016		3,763,552		3,762,879		3,732,342
Total	$	24,553,581	$	24,172,560	$	23,904,968	$	23,724,018	$	23,237,659

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Commercial

Commercial loans represent loans for working capital, facilities acquisition or expansion, purchases of equipment and other needs of commercial customers primarily located within our geographical footprint. These loans are underwritten individually and represent ongoing relationships based on a thorough knowledge of the customer, the customer's industry and market. While commercial loans are generally secured by the customer's assets including real property, inventory, accounts receivable, operating equipment, interests in mineral rights and other property and may also include personal guarantees of the owners and related parties, the primary source of repayment of the loans is the ongoing cash flow from operations of the customer's business. In addition, revolving lines of credit are generally governed by a borrowing base. Inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with commercial lending policies.

Commercial loans totaled $15.6 billion or 64% of the loan portfolio at June 30, 2024, a $491 million increase over March 31, 2024, primarily due to growth in general business and services loans.

Approximately 70% of loans in this segment are located within our geographic footprint based on collateral location. Loans for which the collateral location is less relevant, such as unsecured loans and reserve-based energy loans, are categorized by the borrower's primary operating location. The largest concentration of loans in this segment outside of our footprint is California, totaling 5% of the segment.

Supporting the energy industry with loans to producers and other energy-related entities has been a hallmark of the Company since its founding and represents a large portion of our commercial loan portfolio. In addition, energy production and related industries have a significant impact on the economy in our primary markets. Loans collateralized by oil and gas properties are subject to a semi-annual engineering review by our internal staff of petroleum engineers. This review is used as the basis for developing the expected cash flows supporting the loan amount. The projected cash flows are discounted according to risk characteristics of the underlying oil and gas properties. Loans 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 pricing levels and with existing conventional equipment and operating methods and costs. As part of our evaluation of credit quality, we analyze rigorous stress tests over a range of commodity prices and take proactive steps to mitigate risk when appropriate.

Outstanding energy loan balances totaled $3.5 billion or 14% of total loans at June 30, 2024, a $7.8 million increase compared to March 31, 2024. Approximately $2.7 billion of energy loans were to oil and gas producers, a $24 million increase over March 31, 2024. The majority of this portfolio is first lien, senior secured, reserve-based lending, which we believe is the lowest risk form of energy lending. Approximately 70% of committed production loans are secured by properties primarily producing oil, and 30% of the committed production loans are secured by properties primarily producing natural gas.

Loans to midstream oil and gas companies totaled $538 million at June 30, 2024, a $67 million decrease compared to March 31, 2024. Loans to borrowers that provide services to the energy industry totaled $220 million at June 30, 2024, an increase of $42 million compared to the prior quarter. Loans to other energy borrowers, including those engaged in wholesale or retail energy sales, totaled $43 million, a $7.5 million increase compared to March 31, 2024.

Unfunded energy loan commitments were $4.4 billion at June 30, 2024, a $20 million increase compared to March 31, 2024.

The healthcare sector of the loan portfolio totaled $4.2 billion or 17% of total loans. Healthcare loans decreased $15 million compared to March 31, 2024. Healthcare sector loans consist primarily of loans for the development and operation of senior housing and care facilities including independent living, assisted living and skilled nursing. Generally we loan to borrowers with a portfolio of multiple facilities that serves to help diversify risks specific to a single facility.

The services sector of the loan portfolio totaled $3.6 billion or 15% of total loans, a $48 million increase compared to the prior quarter. Service sector loans consist of a large number of loans to a variety of businesses including Native American tribal and state and local municipal government entities, Native American tribal casino operations, foundations and not-for-profit organizations, educational services and specialty trade contractors. Approximately $1.6 billion of the services category is made up of loans with individual balances of less than $10 million. Services sector loans are generally secured by the assets of the borrower with repayment coming from the cash flows of ongoing operations of the customer's business.

General business loans totaled $4.4 billion or 18% of total loans, an increase of $450 million compared to the prior quarter. General business loans consist of $2.7 billion of wholesale/retail loans and $1.6 billion of loans from other commercial industries.

- 21 -

We participate in shared national credits when appropriate to obtain or maintain business relationships with local customers. Shared national credits are defined by banking regulators as credits of $100 million or more and with three or more non-affiliated banks as participants. At June 30, 2024, the outstanding principal balance of these loans totaled $6.0 billion, including $2.4 billion of energy loans. Substantially all of these loans are to borrowers with local market relationships. We serve as the agent lender in approximately 21% of our shared national credits, based on dollars committed. We hold shared national credits to the same standard of analysis and perform the same level of review as internally originated credits. Our lending policies generally avoid loans in which we do not have the opportunity to maintain or achieve other business relationships with the customer. In addition to management's quarterly assessment of credit risk, banking regulators annually review a sample of shared national credits for proper risk grading.

Commercial Real Estate

Commercial real estate represents loans for the construction of buildings or other improvements to real estate and property held by borrowers for investment purposes generally within our geographical footprint. We require collateral values in excess of the loan amounts, demonstrated cash flows in excess of expected debt service requirements, equity investment in the project and a portion of the project already sold, leased or permanent financing already secured. The expected cash flows from all significant new or renewed income producing property commitments are stress tested to reflect the risks in varying interest rates, vacancy rates and rental rates. As with commercial loans, inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with applicable lending policies.

Outstanding commercial real estate loan balances totaled $5.1 billion or 21% of total loans at June 30, 2024, a decrease of $153 million compared to March 31, 2024. Loans secured by industrial facilities decreased by $129 million to $1.2 billion. Other commercial real estate loans decreased by $45 million to $358 million and loans secured by office facilities decreased by $24 million to $877 million. The decline in these portfolios was partially offset by a $36 million increase in loans secured by multifamily properties.

Approximately 66% of loans in this segment are in our geographic footprint based on collateral location. The largest concentration of loans in this segment outside our footprint is Utah, totaling 10% of the segment. All other states represent less than 5% individually.

Unfunded commercial real estate loan commitments were $1.6 billion at June 30, 2024, a decrease of $88 million compared to March 31, 2024. We take a disciplined approach to managing our concentration of commercial real estate loan commitments as a percentage of capital.

Loans to Individuals

Loans to individuals include residential mortgage and personal loans. Residential mortgage loans provide funds for our customers to purchase or refinance their primary residence or to borrow against the equity in their home. These loans are secured by a first or second mortgage on the customer's primary residence. Personal loans consist primarily of loans to Wealth Management clients secured by the cash surrender value of insurance policies and marketable securities. Personal loans also include direct loans secured by and for the purchase of automobiles, recreational and marine equipment as well as unsecured loans. These loans are made in accordance with underwriting policies we believe to be conservative and are fully documented. Loans may be individually underwritten or credit scored based on size and other criteria. Credit scoring is assessed based on significant credit characteristics including credit history, residential and employment stability.

In general, we sell the majority of our conforming fixed-rate mortgage loan originations in the secondary market and retain the majority of our non-conforming and adjustable-rate mortgage loans. Our mortgage loan portfolio does not include payment option adjustable-rate mortgage loans or adjustable-rate mortgage loans with initial rates that are below market. Home equity loans are primarily first-lien and fully amortizing.

Residential mortgage loans guaranteed by U.S. government agencies have limited credit exposure because of the agency guarantee. This amount includes residential mortgage loans previously sold into GNMA mortgage pools that the Company may repurchase when certain defined delinquency criteria are met. Because of this repurchase right, the Company is deemed to have regained effective control over these loans and must include them on the Consolidated Balance Sheet.

Loans to individuals totaled $3.8 billion or 16% of the loan portfolio, an increase of $44 million compared to March 31, 2024. Approximately 91% of the loans in this segment are secured by collateral located within our geographical footprint. Loans for which the collateral location is less relevant, such as unsecured loans, are categorized by the borrower's primary location.

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The Company secondarily evaluates loan portfolio performance based on the primary geographical market managing the loan. Loans attributed to a geographical market may not represent the location of the borrower or the collateral. All permanent mortgage loans serviced by our mortgage banking unit and held for investment by the Company are centrally managed by the Oklahoma market.

Table 13 – Loans Managed by Primary Geographical Market

(In thousands)

	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Texas:
Commercial	$	7,879,143	$	7,515,070	$	7,384,107	$	7,249,963	$	7,223,820
Commercial real estate	1,754,087		1,935,728		1,987,037		1,873,477		1,748,796
Loans to individuals	908,920		964,464		914,134		961,299		974,911
Total Texas	10,542,150		10,415,262		10,285,278		10,084,739		9,947,527
Oklahoma:
Commercial	3,619,136		3,478,146		3,275,907		3,384,627		3,251,547
Commercial real estate	556,971		605,419		606,515		601,087		573,559
Loans to individuals	2,273,240		2,176,268		2,147,782		2,100,974		2,079,311
Total Oklahoma	6,449,347		6,259,833		6,030,204		6,086,688		5,904,417
Colorado:
Commercial	2,220,887		2,244,416		2,273,179		2,219,460		2,179,473
Commercial real estate	806,522		766,100		769,329		710,552		683,973
Loans to individuals	217,990		221,291		228,257		227,569		223,200
Total Colorado	3,245,399		3,231,807		3,270,765		3,157,581		3,086,646
Arizona:
Commercial	1,104,875		1,149,394		1,143,682		1,173,491		1,177,778
Commercial real estate	1,045,837		1,007,972		1,003,331		1,014,151		926,750
Loans to individuals	208,419		218,664		248,873		260,282		242,102
Total Arizona	2,359,131		2,376,030		2,395,886		2,447,924		2,346,630
Kansas/Missouri:
Commercial	336,232		320,609		331,179		307,725		309,148
Commercial real estate	482,249		497,036		511,947		547,708		516,299
Loans to individuals	157,750		141,767		144,958		132,137		138,960
Total Kansas/Missouri	976,231		959,412		988,084		987,570		964,407
New Mexico:
Commercial	318,711		317,651		291,736		297,714		287,443
Commercial real estate	367,678		352,559		389,106		405,989		425,472
Loans to individuals	67,747		67,814		67,485		69,418		64,803
Total New Mexico	754,136		738,024		748,327		773,121		777,718
Arkansas:
Commercial	144,425		107,581		103,979		86,859		105,307
Commercial real estate	70,231		71,863		70,382		88,336		95,952
Loans to individuals	12,531		12,748		12,063		11,200		9,055
Total Arkansas	227,187		192,192		186,424		186,395		210,314
Total BOK Financial loans	$	24,553,581	$	24,172,560	$	23,904,968	$	23,724,018	$	23,237,659

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Off-Balance Sheet Commitments

We enter into certain off-balance sheet arrangements in the normal course of business as shown in Table 14. Loan commitments may be unconditional obligations to provide financing or conditional obligations that depend on the borrower's financial condition, collateral value or other factors. Standby letters of credit are unconditional commitments to guarantee the performance of our customer to a third party. Since some of these commitments are expected to expire before being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

We have off-balance sheet commitments related to certain residential mortgage loans sold into mortgage-backed securities as part of our mortgage banking activities. We retain off-balance sheet credit risk related to losses in excess of amounts guaranteed by the VA.

We also have off-balance sheet credit risk related to certain residential mortgage loans primarily originated under community development loan programs that were sold to a U.S. government agency with full recourse prior to 2007. We are obligated to repurchase these loans for the life of these loans in the event of foreclosure for the unpaid principal and interest at the time of foreclosure. The majority of our conforming fixed-rate loan originations are sold in the secondary market, and we only retain repurchase obligations under standard underwriting representations and warranties.

Table 14 – Off-Balance Sheet Credit Commitments

(In thousands)

	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Loan commitments	$	14,114,288	$	14,433,786	$	14,793,025	$	14,404,610	$	14,979,253
Standby letters of credit	736,527		733,903		710,543		759,563		721,908
Unpaid principal balance of residential mortgage loans sold with recourse	36,582		37,891		39,333		40,369		42,041
Unpaid principal balance of residential mortgage loans transferred into mortgage-backed securities guaranteed by U.S. Dept. of Veterans Affairs	942,658		950,115		959,256		970,469		988,212

Customer Hedging Programs

We offer programs that permit our customers to hedge various risks, including fluctuations in energy, interest rates, foreign exchange rates and other commodities with derivative contracts. Each of these programs work essentially the same way. Derivative contracts are executed between the customers and the Company. Offsetting contracts are executed between the Company and selected counterparties to minimize market risk due to changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to the customer contracts except for a fixed pricing spread or a fee paid to us as compensation for administrative costs, credit risk and profit.

The customer hedging programs create credit risk for potential amounts due to the Company from our customers and from the counterparties. Customer credit risk is monitored through existing credit policies and procedures. The effects of changes in commodity prices, interest rates or foreign exchange rates are evaluated across a range of possible scenarios to determine the maximum exposure we are willing to have individually to any customer. Customers may also be required to provide cash margin or other collateral in conjunction with our credit agreements to further limit our credit risk.

Counterparty credit risk is evaluated through existing policies and procedures. This evaluation considers the total relationship between BOK Financial and each of the counterparties. Individual limits are established by management, approved by Credit Administration and reviewed by the Asset/Liability Committee. Margin collateral is required if the exposure between the Company and any counterparty exceeds established limits. Based on declines in the counterparties' credit ratings, these limits may be reduced and additional margin collateral may be required.

A deterioration of the credit standing of one or more of the customers or counterparties to these contracts may result in BOK Financial recognizing a loss as the fair value of the affected contracts may no longer move in tandem with the offsetting contracts. This occurs if the credit standing of the customer or counterparty deteriorates such that either the fair value of underlying collateral no longer supports the contract or the customer or the counterparty's ability to provide margin collateral becomes impaired. Credit losses on customer derivatives reduce brokerage and trading revenue in the Consolidated Statements of Earnings.

- 24 -

Derivative contracts are carried at fair value. At June 30, 2024, the net fair value of derivative contracts, before consideration of cash margin, reported as assets under these programs totaled $339 million compared to $463 million at March 31, 2024. At June 30, 2024, the net fair value of our derivative contracts included $196 million for energy contracts, $107 million for interest rate swaps and $35 million for foreign exchange contracts. The aggregate net fair value of derivative contracts, before consideration of cash margin, held under these programs reported as liabilities totaled $327 million at June 30, 2024 and $460 million at March 31, 2024.

At June 30, 2024, total derivative assets were reduced by $143 million of cash collateral received from counterparties and total derivative liabilities were reduced by $54 million of cash collateral paid to counterparties related to instruments executed with the same counterparty under a master netting agreement. Derivative contracts executed with customers may be secured by non-cash collateral in conjunction with a credit agreement with that customer, such as proven producing oil and gas properties. Access to this collateral in an event of default is reasonably assured.

A table showing the notional and fair value of derivative assets and liabilities on both a gross and net basis is presented in Note 3 to the Consolidated Financial Statements.

The fair value of derivative contracts reported as assets under these programs, net of cash margin held by the Company, by category of debtor at June 30, 2024 follows in Table 15.

Table 15 – Fair Value of Derivative Contracts

(In thousands)

Customers	$	114,636
Banks and other financial institutions	22,496
Exchanges and clearing organizations	58,942
Fair value of customer risk management program asset derivative contracts, net	$	196,074

At June 30, 2024, our largest derivative exposure was to an exchange for $61 million of net derivative positions, net of cash margin.

Our customer hedging program also introduces liquidity and capital risk. We are required to provide cash margin to certain counterparties when the net negative fair value of the contracts exceeds established limits which may incur additional funding costs. Also, changes in commodity prices affect risk-weighted assets and total assets which in turn impacts regulatory capital ratios. These risks are modeled as part of the management of these programs. Based on current prices, a decrease in market prices to an equivalent of $64.01 per barrel of oil would decrease the fair value of derivative assets by $84 million, with lending customers comprising the bulk of the assets. An increase in prices to an equivalent of $99.07 per barrel of oil would increase the fair value of derivative assets by $752 million as asset values rise faster than margin paid. Liquidity requirements of this program may also be affected by our credit rating. At June 30, 2024, a decrease in our credit rating to below investment grade would increase our obligation to post cash margin on existing contracts by approximately $10 million.

The fair value of our to-be-announced residential mortgage-backed securities and interest rate swap derivative contracts is affected by changes in interest rates. Based on our assessment as of June 30, 2024, changes in interest rates would not materially impact regulatory capital or liquidity needed to support this portion of our customer derivative program.

- 25 -

Summary of Credit Loss Experience

Table 16 – Summary of Credit Loss Experience

(Dollars in thousands)

	Three Months Ended
	June 30, 2024			Mar. 31, 2024			Dec. 31, 2023			Sep. 30, 2023			June 30, 2023
Allowance for loan losses:
Beginning balance	$	281,623		$	277,123		$	272,114		$	262,714		$	249,460
Loans charged off	(7,940)			(7,060)			(5,007)			(10,593)			(8,049)
Recoveries of loans previously charged off	995			1,600			911			4,062			1,346
Net loans charged off	(6,945)			(5,460)			(4,096)			(6,531)			(6,703)
Provision for credit losses	13,148			9,960			9,105			15,931			19,957
Ending balance	$	287,826		$	281,623		$	277,123		$	272,114		$	262,714
Accrual for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	47,319		$	48,977		$	52,604		$	59,940		$	62,943
Provision for credit losses	(4,983)			(1,658)			(3,627)			(7,336)			(3,003)
Ending balance	$	42,336		$	47,319		$	48,977		$	52,604		$	59,940
Accrual for off-balance sheet credit risk associated with mortgage banking activities:
Beginning balance	$	3,224		$	3,492		$	2,962		$	4,443		$	4,381
Net loans charged off	(2)			(3)			—			(7)			(16)
Provision for credit losses	(153)			(265)			530			(1,474)			78
Ending balance	$	3,069		$	3,224		$	3,492		$	2,962		$	4,443
Allowance for credit losses related to held-to-maturity (investment) securities:
Beginning balance	$	299		$	336		$	344		$	465		$	497
Provision for credit losses	(12)			(37)			(8)			(121)			(32)
Ending balance	$	287		$	299		$	336		$	344		$	465
Total provision for credit losses	$	8,000		$	8,000		$	6,000		$	7,000		$	17,000
Average loans by portfolio segment :
Commercial	$	15,516,238		$	14,992,639		$	14,680,001		$	14,527,676		$	14,316,474
Commercial real estate	5,048,704			5,188,152			5,293,021			5,172,876			4,896,230
Loans to individuals	3,820,211			3,767,776			3,732,086			3,713,756			3,676,350
Net charge-offs (annualized) to average loans	0.11		%	0.09		%	0.07		%	0.11		%	0.12		%
Net charge-offs (annualized) to average loans by portfolio segment:
Commercial	0.15		%	0.09		%	0.08		%	0.18		%	0.06		%
Commercial real estate	0.01		%	0.10		%	—		%	(0.07)		%	0.32		%
Loans to individuals	0.08		%	0.10		%	0.11		%	0.10		%	0.08		%
Recoveries to gross charge-offs	12.53		%	22.66		%	18.19		%	38.35		%	16.72		%
Provision for loan losses (annualized) to average loans	0.22		%	0.17		%	0.15		%	0.27		%	0.35		%
Allowance for loan losses to loans outstanding at period end	1.17		%	1.17		%	1.16		%	1.15		%	1.13		%
Accrual for unfunded loan commitments to loan commitments	0.30		%	0.33		%	0.33		%	0.37		%	0.40		%
Combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments to loans outstanding at period end	1.34		%	1.36		%	1.36		%	1.37		%	1.39		%

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Allowance for Loan Losses and Accrual for Off-Balance Sheet Credit Risk from Unfunded Loan Commitments

Expected credit losses on assets carried at amortized cost are recognized over their expected lives based on models that measure the probability of default and loss given default over a 12-month reasonable and supportable forecast period. Models incorporate base case, downside and upside macroeconomic variables such as real GDP growth, civilian unemployment rate, commercial real estate vacancy rates and WTI oil prices on a probability weighted basis. See Note 4 to the Consolidated Financial Statements for additional discussion of methodology of allowance for loan losses.

Non-pass grade loans, including loans especially mentioned, accruing substandard and nonaccruing loans, increased $100 million over March 31, 2024. Non-pass grade commercial real estate loans increased $41 million and non-pass grade healthcare loans increased $30 million. Non-pass grade energy loans increased $15 million and non-pass grade general business loans increased $13 million. A summary of outstanding loan balances by risk grade is included in Note 4 to the Consolidated Financial Statements.

The provision for credit losses of $8.0 million in the second quarter of 2024 reflects continued loan growth and a stable economic forecast. The allowance for loan losses totaled $288 million or 1.17% of outstanding loans at June 30, 2024. Excluding residential mortgage loans guaranteed by U.S. government agencies, the allowance for loan losses was 342% of nonaccruing loans. The combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments was $330 million or 1.34% of outstanding loans and 393% of nonaccruing loans at June 30, 2024.

The probability weighting of all scenarios in our reasonable and supportable forecast remained unchanged compared to the prior quarter. The sensitivity to management's economic scenario weighting may be quantified by comparing the results of weighting each economic scenario at 100%. For example, compared to a 100% base case scenario, a 100% downside case would result in an additional $177 million in quantitative reserve, while a 100% upside case would result in $17 million less quantitative reserve at June 30, 2024. Such sensitivity calculations do not necessarily reflect the nature and extent of future changes in the related allowance.

The Company recorded an $8.0 million provision for credit losses in the first quarter of 2024. The allowance for loan losses was $282 million or 1.17% of outstanding loans at March 31, 2024. Excluding residential mortgage loans guaranteed by U.S. government agencies, the allowance for loan losses was 255% of nonaccruing loans. The combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments was $329 million or 1.36% of outstanding loans and 298% of nonaccruing loans.

- 27 -

A summary of macroeconomic variables considered in developing our estimate of expected credit losses at June 30, 2024 follows:

	Base	Downside	Upside
Scenario probability weighting	50%	35%	15%
Economic outlook	Geopolitical conflicts remain isolated. There are two rate cuts over the next four quarters, bringing the federal funds target range to 4.75% to 5.00% by the end of the second quarter of 2025. Core inflation continues to improve from the previous peaks and reaches 2.8% by the second quarter of 2025. Job openings continue to normalize and overall hiring levels decline, causing the national unemployment rate to modestly increase over the next four quarters. Inflation pressures ease and help stabilize real household income. A restrictive credit environment slows economic activity and results in below-trend GDP growth.	Geopolitical conflicts remain isolated. The Federal Reserve is forced to adopt an accommodative monetary policy compared to the base case scenario and cut the federal funds rate significantly to encourage economic activity and job creation. In total, there are ten rate cuts over the next four quarters bringing the target range to 2.75% to 3.00% by the end of the second quarter of 2025. Tight monetary conditions result in declines in consumer spending while a restrictive credit environment decreases private sector investment. This pushes the United States into a recession, with a contraction in economic activity and a sharp increase in the unemployment rate.	Geopolitical conflicts remain isolated. There are four rate cuts over the next four quarters, bringing the target range to 4.25% to 4.50% by the end of the second quarter of 2025. Core inflation continues to improve from the previous peaks and reaches 2.5% by the second quarter of 2025. Labor force participants continue to re-enter the job market to help fill the elevated level of job openings. The increase in employment helps maintain household income above its pre-pandemic trend. This supports consumer spending and produces GDP growth consistent with pre-pandemic levels.
Macro-economic factors	–GDP is forecasted to grow by 1.7% over the next 12 months. –Civilian unemployment rate of 4.0% in the third quarter of 2024 increases to 4.1% by the second quarter of 2025. –WTI oil prices are projected to generally follow the NYMEX forward curve that existed at the end of June 2024 and are expected to average $72.97 per barrel over the next 12 months.	–GDP is forecasted to contract 1.8% over the next twelve months. –Civilian unemployment rate of 4.6% in the third quarter of 2024 increases to 6.3% in the second quarter of 2025. –WTI oil prices are projected to average $50.80 over the next 12 months, with a peak of $57.16 in the third quarter of 2024 and falling 19% over the following three quarters.	–GDP is forecasted to grow by 2.2% over the next 12 months. –Civilian unemployment rate of 3.9% in the third quarter of 2024 increases to 4.0% by the second quarter of 2025. –WTI oil prices are projected to average $72.63 per barrel over the next 12 months.

- 28 -

Net Loans Charged Off

Net loans charged off totaled $6.9 million or 0.11% of average loans in the second quarter. Net charge-offs were primarily composed of a single healthcare loan. Net charge-offs of loans to individuals include deposit account overdraft losses. Net charge-offs were $5.5 million or 0.09% of average loans on an annualized basis in the first quarter of 2024.

Accrual for Off-Balance Sheet Credit Risk Associated with Mortgage Banking Activities

The accrual for off-balance sheet credit risk associated with mortgage banking activities includes consideration of credit risk related to certain residential mortgage loans sold into mortgage-backed securities in excess of amounts guaranteed by the VA and mortgage loans originated under community development loan programs that were sold to a U.S. government agency with full recourse.

We use publicly available long-term national data to estimate total loss given default for our off-balance sheet credit risk related to losses in excess of amounts guaranteed by the VA. This result is combined with probability of default output from our mortgage servicing rights model to estimate total expected loss. Then, we estimate the VA's guarantee percentage to determine our portion of the credit risk. Qualitative adjustment may be used, if necessary.

Allowance for Credit Losses Related to Held-to-Maturity (Investment) Securities

The expected credit losses principles apply to all financial assets measured at cost, including our held-to-maturity (investment) debt securities portfolio. Our investment portfolio includes municipal and other tax-exempt securities and other debt securities. Expected credit losses for these assets are based on the probability of default and loss given default assumptions that align with similarly graded loans. Qualitative adjustment may be used, if necessary.

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Nonperforming Assets

As more fully described in Note 4 to the Consolidated Financial Statements, loans are generally classified as nonaccruing when it becomes probable that we will not collect the full contractual principal and interest. Real estate and other repossessed assets are assets acquired in partial or total forgiveness of loans. The assets are carried at the lower of cost as determined by fair value at the date of foreclosure or current fair value, less estimated selling costs. A summary of nonperforming assets follows in Table 17.

Table 17 – Nonperforming Assets

(Dollars in thousands)

	June 30, 2024			Mar. 31, 2024			Dec. 31, 2023			Sep. 30, 2023			June 30, 2023
Nonaccruing loans:
Commercial:
Healthcare	$	20,845		$	49,307		$	81,529		$	41,836		$	36,753
Energy	28,668			14,991			17,843			19,559			20,037
Services	3,165			3,319			3,616			2,820			4,541
General business	5,756			7,003			7,143			6,483			11,946
Total commercial	58,434			74,620			110,131			70,698			73,277
Commercial real estate	12,883			22,087			7,320			7,418			17,395
Loans to individuals:
Residential mortgage	12,627			13,449			18,056			30,954			29,973
Residential mortgage guaranteed by U.S. government agencies	6,617			9,217			9,709			10,436			11,473
Personal	122			142			253			79			133
Total loans to individuals	19,366			22,808			28,018			41,469			41,579
Total nonaccruing loans	90,683			119,515			145,469			119,585			132,251
Real estate and other repossessed assets	2,334			2,860			2,875			3,753			4,227
Total nonperforming assets	$	93,017		$	122,375		$	148,344		$	123,338		$	136,478
Total nonperforming assets excluding those guaranteed by U.S. government agencies	$	86,400		$	113,158		$	138,635		$	112,902		$	125,005
Allowance for loan losses to nonaccruing loans1	342.38		%	255.33		%	204.13		%	249.31		%	217.52		%
Combined allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments to nonaccruing loans1	392.74		%	298.23		%	240.20		%	297.50		%	267.15		%
Nonperforming assets to outstanding loans and repossessed assets	0.38		%	0.51		%	0.62		%	0.52		%	0.59		%
Nonperforming assets to outstanding loans and repossessed assets1	0.35		%	0.47		%	0.58		%	0.48		%	0.54		%
Nonaccruing loans to outstanding loans	0.37		%	0.49		%	0.61		%	0.50		%	0.57		%
Nonaccruing commercial loans to outstanding commercial loans	0.37		%	0.49		%	0.74		%	0.48		%	0.50		%
Nonaccruing commercial real estate loans to outstanding commercial real estate loans	0.25		%	0.42		%	0.14		%	0.14		%	0.35		%
Nonaccruing loans to individuals to outstanding loans to individuals1	0.34		%	0.37		%	0.51		%	0.86		%	0.85		%

1     Excludes residential mortgages guaranteed by U.S. government agencies.

Nonaccruing loans decreased $29 million compared to March 31, 2024. New nonaccruing loans identified in the second quarter totaled $24 million, offset by $42 million in payments received and $7.9 million of charge-offs. Nonaccruing healthcare loans decreased $28 million and nonaccruing commercial real estate loans decreased $9.2 million, partially offset by a $14 million increase in nonaccruing energy loans. The Company generally retains nonperforming assets to maximize potential recovery, which may cause future nonperforming assets to decrease more slowly.

A rollforward of nonperforming assets for the three and six months ended June 30, 2024 follows in Table 18.

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Table 18 – Rollforward of Nonperforming Assets

(In thousands)

	Three Months Ended
	June 30, 2024
	Nonaccruing Loans								Real Estate and Other Repossessed Assets		Total Nonperforming Assets
	Commercial		Commercial Real Estate		Loan to Individuals		Total
Balance, March 31, 2024	$	74,620	$	22,087	$	22,808	$	119,515	$	2,860	$	122,375
Additions	18,820		2,724		2,818		24,362		—		24,362
Payments	(28,615)		(11,723)		(1,498)		(41,836)		—		(41,836)
Charge-offs	(6,391)		(205)		(1,344)		(7,940)		—		(7,940)
Net gains (losses) and write-downs	—		—		—		—		33		33
Foreclosure of loans guaranteed by U.S. government agencies	—		—		(768)		(768)		—		(768)
Proceeds from sales	—		—		—		—		(559)		(559)
Net transfers to nonaccruing loans	—		—		(1,977)		(1,977)		—		(1,977)
Return to accrual status	—		—		(673)		(673)		—		(673)
Balance, June 30, 2024	$	58,434	$	12,883	$	19,366	$	90,683	$	2,334	$	93,017
	Six Months Ended
	June 30, 2024
	Nonaccruing Loans								Real Estate and Other Repossessed Assets		Total Nonperforming Assets
	Commercial		Commercial Real Estate		Loan to Individuals		Total
Balance, Dec. 31, 2023	$	110,131	$	7,320	$	28,018	$	145,469	$	2,875	$	148,344
Additions	23,762		18,766		6,069		48,597		—		48,597
Payments	(34,731)		(11,748)		(3,931)		(50,410)		—		(50,410)
Charge-offs	(10,631)		(1,455)		(2,914)		(15,000)		—		(15,000)
Net gains (losses) and write-downs	—		—		—		—		142		142
Foreclosure of nonperforming loans	—		—		(77)		(77)		77		—
Foreclosure of loans guaranteed by U.S. government agencies	—		—		(1,326)		(1,326)		—		(1,326)
Proceeds from sales	—		—		—		—		(760)		(760)
Net transfers to nonaccruing loans	—		—		(1,982)		(1,982)		—		(1,982)
Return to accrual status	(30,097)		—		(4,491)		(34,588)		—		(34,588)
Balance, June 30, 2024	$	58,434	$	12,883	$	19,366	$	90,683	$	2,334	$	93,017

We foreclose on loans guaranteed by U.S. government agencies in accordance with agency guidelines. Generally, these loans are not eligible for modification programs or have failed to comply with modified loan terms. Principal is guaranteed by agencies of the U.S. government, subject to limitations, and credit risk is limited. At foreclosure, these amounts are transferred to claims receivable accounts. These properties will be conveyed to the agencies once applicable criteria have been met. 

Real Estate and Other Repossessed Assets

Real estate and other repossessed assets totaled $2.3 million at June 30, 2024, largely unchanged compared to March 31, 2024. Real estate and other repossessed assets were composed primarily of $2.1 million of land for commercial real estate development.

Liquidity and Capital

Our funding sources, which primarily include deposits and borrowings from the Federal Home Loan Banks and other banks, provide adequate liquidity to meet our operating needs. Based on the average balances for the second quarter of 2024, approximately 70% of our funding was provided by deposit accounts, 18% from borrowed funds, 10% from equity and less than 1% from long-term subordinated debt. 

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Subsidiary Bank

Deposits and borrowed funds are the primary sources of liquidity for BOKF, NA, the wholly owned subsidiary bank of BOK Financial. We compete for retail and commercial deposits by offering a broad range of products and services and focusing on customer convenience. Retail deposit growth is supported through personal and small business checking, online bill paying services, mobile banking services, an extensive network of branch locations and ATMs and our ExpressBank call center. Commercial deposit growth is supported by offering treasury management and lockbox services. We also acquire brokered deposits when the cost of funds is advantageous to other funding sources.

Average deposits for the second quarter of 2024 totaled $35.7 billion, a $627 million increase compared to the first quarter of 2024. Interest-bearing transaction account balances grew by $742 million, partially offset by a $244 million decrease in demand deposit balances. Time deposit balances increased $140 million.

Table 19 – Average Deposits by Line of Business

(In thousands)

	Three Months Ended
	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Commercial Banking	$	16,189,003	$	15,730,241	$	15,493,326	$	15,115,313	$	14,822,093
Consumer Banking	8,073,782		7,901,167		7,890,032		7,936,186		7,986,674
Wealth Management	9,551,307		9,237,965		8,085,643		7,886,962		7,544,143
Subtotal	33,814,092		32,869,373		31,469,001		30,938,461		30,352,910
Funds Management and other	1,839,131		2,156,518		2,207,212		2,349,436		2,016,802
Total	$	35,653,223	$	35,025,891	$	33,676,213	$	33,287,897	$	32,369,712

Average Commercial Banking deposit balances increased $459 million compared to the first quarter of 2024. Interest-bearing transaction account balances increased $640 million while demand deposit balances decreased $200 million. Our Commercial deposit portfolio is highly diversified across industries and customers. The highest concentration by industry within our commercial deposit portfolio is our energy customers representing 8% of our total deposits.

Average Consumer Banking deposit balances increased $173 million over the prior quarter. A $244 million increase in time deposit balances was partially offset by a $60 million decrease in interest-bearing transaction deposit balances.

Average Wealth Management deposits increased $313 million over the first quarter of 2024. Interest-bearing transaction account balances increased $246 million and time deposit balances increased $114 million. Demand deposit balances decreased $47 million.

Average brokered deposits were 5% of total deposits during the second quarter of 2024. Excluding the reciprocal component, brokered deposits represented 1% of total deposits. Beginning in the first quarter of 2024, reciprocal deposit balances exceeded the $5 billion general threshold as defined by the FDIC. Reciprocal deposit balances in excess of the $5 billion general threshold are included as brokered deposits for regulatory reporting purposes. Growth in brokered deposits during the quarter was entirely related to reciprocal deposit balances. Average interest-bearing transaction accounts for the second quarter included $1.3 billion of brokered deposits, a $771 million increase over the first quarter of 2024. Average time deposits for the second quarter of 2024 included $384 million of brokered deposits, a $236 million decrease compared to the first quarter of 2024. Period end brokered interest-bearing transaction accounts increased $737 million to $1.6 billion at June 30, 2024 and brokered time deposits decreased $250 million to $242 million at June 30, 2024.

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The distribution of our period end deposit account balances among principal markets follows in Table 20.

Table 20 – Period End Deposits by Principal Market Area

(In thousands)

	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Oklahoma:
Demand	$	3,721,009	$	3,365,529	$	3,586,091	$	4,019,019	$	4,273,136
Interest-bearing:
Transaction	12,115,793		12,362,193		10,929,704		9,970,955		9,979,534
Savings	496,289		509,775		500,313		508,619		531,536
Time	2,157,778		2,136,583		1,984,336		2,019,749		1,945,916
Total interest-bearing	14,769,860		15,008,551		13,414,353		12,499,323		12,456,986
Total Oklahoma	18,490,869		18,374,080		17,000,444		16,518,342		16,730,122
Texas:
Demand	2,448,433		2,201,561		2,306,334		2,599,998		2,876,568
Interest-bearing:
Transaction	5,425,670		5,125,834		5,035,856		5,046,288		4,532,093
Savings	150,812		157,108		155,652		154,863		162,704
Time	626,724		605,526		492,753		436,218		377,424
Total interest-bearing	6,203,206		5,888,468		5,684,261		5,637,369		5,072,221
Total Texas	8,651,639		8,090,029		7,990,595		8,237,367		7,948,789
Colorado:
Demand	1,244,848		1,316,971		1,633,672		1,598,622		1,726,130
Interest-bearing:
Transaction	1,921,671		1,951,232		1,921,605		1,888,026		1,825,295
Savings	61,184		63,675		67,646		63,129		66,968
Time	261,237		237,656		201,393		185,030		148,840
Total interest-bearing	2,244,092		2,252,563		2,190,644		2,136,185		2,041,103
Total Colorado	3,488,940		3,569,534		3,824,316		3,734,807		3,767,233
New Mexico:
Demand	661,677		683,643		794,467		853,571		912,218
Interest-bearing:
Transaction	1,323,750		1,085,946		886,089		1,049,903		712,541
Savings	92,910		95,944		95,453		97,753		102,729
Time	314,133		298,556		258,195		217,535		179,548
Total interest-bearing	1,730,793		1,480,446		1,239,737		1,365,191		994,818
Total New Mexico	2,392,470		2,164,089		2,034,204		2,218,762		1,907,036
Arizona:
Demand	448,587		502,143		524,167		522,142		592,144
Interest-bearing:
Transaction	1,227,895		1,181,539		1,174,715		903,535		800,970
Savings	11,542		12,024		11,636		12,340		14,489
Time	56,102		46,962		41,884		36,689		31,248
Total interest-bearing	1,295,539		1,240,525		1,228,235		952,564		846,707
Total Arizona	1,744,126		1,742,668		1,752,402		1,474,706		1,438,851

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	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Kansas/Missouri:
Demand	291,045		316,041		326,496		351,236		363,534
Interest-bearing:
Transaction	1,040,114		985,706		966,166		981,091		1,014,247
Savings	14,998		13,095		13,821		14,331		16,316
Time	32,921		30,411		23,955		22,437		16,176
Total interest-bearing	1,088,033		1,029,212		1,003,942		1,017,859		1,046,739
Total Kansas/Missouri	1,379,078		1,345,253		1,330,438		1,369,095		1,410,273
Arkansas:
Demand	24,579		28,168		25,266		29,635		38,818
Interest-bearing:
Transaction	52,149		55,735		49,966		57,381		43,301
Savings	2,754		2,776		2,564		2,898		3,195
Time	15,040		11,215		9,506		9,559		7,225
Total interest-bearing	69,943		69,726		62,036		69,838		53,721
Total Arkansas	94,522		97,894		87,302		99,473		92,539
Total BOK Financial deposits	$	36,241,644	$	35,383,547	$	34,019,701	$	33,652,552	$	33,294,843

Estimated uninsured deposits totaled $18.3 billion or 50% of our total deposits at June 30, 2024. In addition to insured deposits, we also hold $4.5 billion of collateralized deposits. Municipalities, Native American tribal governments and certain trust-related deposits are all required to be collateralized. Excluding the impact of collateralized deposits and deposits related to consolidated subsidiaries, our uninsured and uncollateralized deposit level is $13.0 billion or 36% of total deposits at June 30, 2024.

In addition to deposits, liquidity is provided primarily by federal funds purchased, securities repurchase agreements and Federal Home Loan Banks borrowings. Federal funds purchased consist primarily of unsecured, overnight funds acquired from other financial institutions. Funds are primarily purchased from bankers' banks and Federal Home Loan Banks from across the country. The largest single source of wholesale federal funds purchased totaled $250 million at June 30, 2024. Securities repurchase agreements generally mature within 90 days and are secured by certain available for sale and trading securities. Federal Home Loan Banks borrowings are generally short-term and are secured by a blanket pledge of eligible collateral (generally unencumbered U.S. Treasury and agency mortgage-backed securities, 1-4 family residential mortgage loans, multifamily and other qualifying commercial real estate loans). Amounts borrowed from the Federal Home Loan Bank of Topeka averaged $7.1 billion during the quarter, compared to $6.8 billion in the first quarter of 2024.

At June 30, 2024, management estimates a total potential secured borrowing capacity of approximately $24.5 billion. This includes current available secured capacity of $20.4 billion from the use of programs available to U.S. banks from the Federal Home Loan Banks and Federal Reserve Banks and an estimated $4.1 billion of other sources that could be converted into additional secured capacity.

A summary of other borrowings for BOK Financial on a consolidated basis follows in Table 21.

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Table 21 – Borrowed Funds

(Dollars in thousands)

			Three Months Ended June 30, 2024								Three Months Ended Mar. 31, 2023
	June 30, 2024		Average Balance During the Quarter		Rate		Maximum Outstanding At Any Month End During the Quarter		Mar. 31, 2024		Average Balance During the Quarter		Rate		Maximum Outstanding At Any Month End During the Quarter
Funds purchased	$	598,315	$	509,514	4.86	%	$	600,178	$	899,447	$	582,505	4.76	%	$	899,447
Repurchase agreements	215,443		1,328,809		4.05	%	1,627,169		362,070		675,539		3.43	%	362,070
Other borrowings:
Federal Home Loan Banks advances	6,500,000		7,125,275		5.57	%	6,600,000		6,700,000		6,819,232		5.56	%	6,700,000
GNMA repurchase liability	14,722		12,031		4.58	%	14,722		10,414		10,953		4.00	%	10,805
Other	13,816		13,922		6.90	%	14,067		14,238		14,448		5.26	%	14,800
Total other borrowings	6,528,538		7,151,228		5.58	%			6,724,652		6,844,633		5.56	%
Subordinated debentures1	131,156		131,156		7.07	%	131,156		131,154		131,154		7.09	%	131,154
Total other borrowed funds and subordinated debentures	$	7,473,452	$	9,120,707	5.34	%			$	8,117,323	$	8,233,831	5.35	%

1 Parent Company only.

BOKF, NA also has a liability related to the repurchase of certain delinquent residential mortgage loans previously sold into GNMA mortgage pools. Interest is payable monthly at rates contractually due to investors if delinquent loans are not repurchased from the GNMA mortgage pools.

Parent Company

At June 30, 2024, cash and interest-bearing cash and cash equivalents held by the parent company totaled $200 million. The primary sources of liquidity for BOK Financial are cash on hand and dividends from BOKF, NA. Dividends from the bank are limited by various banking regulations to net profits, as defined, for the year plus retained profits for the two preceding years. Dividends are further restricted by minimum capital requirements. At June 30, 2024, based upon the most restrictive limitations as well as management's internal capital policy, BOKF, NA could declare up to $383 million of dividends. Dividend constraints may be alleviated through increases in retained earnings, capital issuances or changes in risk weighted assets. Future losses or increases in required regulatory capital at the bank could affect its ability to pay dividends to the parent company.

Our equity capital at June 30, 2024 was $5.2 billion, a $100 million increase compared to March 31, 2024. Net income less cash dividends paid increased equity $128 million during the second quarter of 2024. Changes in interest rates resulted in a $4.6 million improvement in the accumulated other comprehensive loss compared to March 31, 2024. We also repurchased $37 million of common stock, excluding a 1% excise tax on corporate stock repurchases, during the second quarter of 2024. Capital is managed to maximize long-term value to the shareholders. Factors considered in managing capital include projections of future earnings including expected benefits from lower federal income tax rates, asset growth and acquisition strategies, and regulatory and debt covenant requirements. Capital management may include subordinated debt or perpetual preferred stock issuance, share repurchase and stock and cash dividends.

On November 1, 2022, the board of directors authorized the Company to purchase up to five million common shares, subject to market conditions, securities law and other regulatory compliance limitations. As of June 30, 2024, the Company had repurchased 3,457,020 shares under this authorization. The Company repurchased 412,176 shares of common stock at an average price of $90.38 per share in the second quarter of 2024. We view share buybacks opportunistically, but within the context of maintaining our strong capital position.

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BOK Financial and BOKF, NA are subject to various capital requirements administered by federal agencies. Failure to meet minimum capital requirements can result in certain mandatory and possibly additional discretionary actions by regulators that could have a material impact on operations. These capital requirements include quantitative measures of assets, liabilities and off-balance sheet items. The capital standards are also subject to qualitative judgments by the regulators.

A summary of minimum capital requirements, including a capital conservation buffer follows in Table 22. A bank which falls below these levels, including the capital conservation buffer, would be subject to regulatory restrictions on capital distributions (including, but not limited to, dividends and share repurchases) and executive bonus payments.

In March 2020, in response to the impact on the financial markets by the COVID-19 pandemic, the banking agencies issued an interim final rule permitting banking organizations that implement the CECL model the option to delay for two years an estimate of the CECL methodology's effect on regulatory capital, followed by a three-year transition period. The estimate includes the implementation date adjustment as of January 1, 2020 plus an estimate of the impact of the change for a two year period following implementation of CECL. We elected to delay the regulatory capital impact of the transition in accordance with the interim final rule. Deferral of the impact of CECL added 3 basis points to the Company's common equity Tier 1 capital at June 30, 2024.

Capital and other performance ratios for BOK Financial on a consolidated basis are presented in Table 22.

Table 22 – Capital and Performance Ratios

	Minimum Capital Requirement		Capital Conservation Buffer		Minimum Capital Requirement Including Capital Conservation Buffer		June 30, 2024		Mar. 31, 2024		June 30, 2023
Capital:
Common equity Tier 1	4.50	%	2.50	%	7.00	%	12.10	%	11.99	%	12.12	%
Tier 1 capital	6.00	%	2.50	%	8.50	%	12.11	%	12.00	%	12.13	%
Total capital	8.00	%	2.50	%	10.50	%	13.25	%	13.15	%	13.24	%
Tier 1 Leverage	4.00	%	N/A		4.00	%	9.39	%	9.42	%	9.75	%
Average total equity to average assets							10.06	%	10.30	%	10.32	%
Tangible common equity ratio1							8.38	%	8.21	%	7.79	%
Adjusted common tangible equity ratio1							8.06	%	7.92	%	7.49	%
Performance Ratios:
Return on average equity							12.79	%	6.53	%	12.28	%
Return on average tangible common equity1							16.27	%	8.31	%	15.86	%

1    See Explanation and Reconciliation of Non-GAAP Measures following.

Off-Balance Sheet Arrangements

See Note 4 to the Consolidated Financial Statements for a discussion of the Company's significant off-balance sheet commitments.

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Explanation and Reconciliation of Non-GAAP Measures

Table 23 provides a reconciliation of the non-GAAP measures with financial measures defined by GAAP.

Table 23 – Non-GAAP Measures

(Dollars in thousands)

	June 30, 2024			Mar. 31, 2024			Dec. 31, 2023			Sep. 30, 2023			June 30, 2023
Reconciliation of tangible common equity ratio and adjusted tangible common equity ratio:
Total shareholders' equity	$	5,229,130		$	5,128,751		$	5,142,442		$	4,814,019		$	4,863,854
Less: Goodwill and intangible assets, net	1,098,777			1,101,643			1,104,728			1,110,553			1,113,995
Tangible common equity	$	4,130,353		$	4,027,108		$	4,037,714		$	3,703,466		$	3,749,859
Add: Unrealized loss on investment securities, net	(204,636)			(185,978)			(171,903)			(246,395)			(189,152)
Add: Tax effect on unrealized loss on investment securities, net	48,128			43,740			40,430			57,949			44,486
Adjusted tangible common equity	$	3,973,845		$	3,884,870		$	3,906,241		$	3,515,020		$	3,605,193
Total assets	$	50,403,457		$	50,160,380		$	49,824,830		$	48,931,397		$	49,237,920
Less: Goodwill and intangible assets, net	1,098,777			1,101,643			1,104,728			1,110,553			1,113,995
Tangible assets	$	49,304,680		$	49,058,737		$	48,720,102		$	47,820,844		$	48,123,925
Tangible common equity ratio	8.38		%	8.21		%	8.29		%	7.74		%	7.79		%
Adjusted tangible common equity ratio	8.06		%	7.92		%	8.02		%	7.35		%	7.49		%
Reconciliation of return on average tangible common equity:
Total average shareholders' equity	$	5,146,785		$	5,152,061		$	4,933,917		$	4,902,119		$	4,941,352
Less: Average goodwill and intangible assets, net	1,100,139			1,103,090			1,107,949			1,112,217			1,115,652
Average tangible common equity	$	4,046,646		$	4,048,971		$	3,825,968		$	3,789,902		$	3,825,700
Net Income	$	163,713		$	83,703		$	82,575		$	134,495		$	151,308
Return on average tangible common equity	16.27		%	8.31		%	8.56		%	14.08		%	15.86		%
Reconciliation of pre-provision net revenue:
Net income before taxes	$	211,035		$	106,889		$	111,475		$	167,735		$	195,637
Add: Provision for expected credit losses	8,000			8,000			6,000			7,000			17,000
Less: Net income (loss) attributable to non-controlling interests	19			(9)			(53)			(16)			328
Pre-provision net revenue	$	219,016		$	114,898		$	117,528		$	174,751		$	212,309
Reconciliation of adjusted net income and earnings per share:
Net income	$	163,713		$	83,703		$	82,575		$	134,495		$	151,308
Add: FDIC special assessment, net of tax	910			4,936			33,478			—			—
Less: Gain on converted Visa shares, net of tax	41,160			—			—			—			—
Add: Related contribution of Visa shares to BOKF Foundation, net of tax	7,648			—			—			—			—
Less: Loss on repositioning of available for sale securities, net of tax	—			(34,547)			(21,129)			—			(2,302)
Less: Gain on sale of BOKF Insurance, net of tax	—			—			23,715			—			—
Adjusted net income	$	131,111		$	123,186		$	113,467		$	134,495		$	153,610
Earnings per share	$	2.54		$	1.29		$	1.26		$	2.04		$	2.27
Add: FDIC special assessment, net of tax	0.01			0.08			0.52			—			—
Less: Gain on converted Visa shares, net of tax	0.65			—			—			—			—
Add: Related contribution of Visa shares to BOKF Foundation, net of tax	0.12			—			—			—			—
Less: Loss on repositioning of available for sale securities, net of tax	—			(0.54)			(0.33)			—			(0.03)
Less: Gain on sale of BOKF Insurance, net of tax	—			—			0.37			—			—
Adjusted earnings per share	$	2.02		$	1.91		$	1.74		$	2.04		$	2.30

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	June 30, 2024			Mar. 31, 2024			Dec. 31, 2023			Sep. 30, 2023			June 30, 2023
Calculation of efficiency ratio and efficiency ratio excluding adjustments:
Total other operating expense	$	336,690		$	340,384		$	384,083		$	324,313		$	318,673
Less: Amortization of intangible assets	2,898			3,003			3,543			3,474			3,474
Numerator for efficiency ratio	$	333,792		$	337,381		$	380,540		$	320,839		$	315,199
Less: FDIC special assessment	1,190			6,454			43,773			—			—
Less: Expenses related to sale of BOKF Insurance	—			—			3,436			—			—
Less: Related contribution of converted Visa shares to BOKF Foundation	10,000			—			—			—			—
Adjusted numerator for efficiency ratio	$	322,602		$	330,927		$	333,331		$	320,839		$	315,199
Net interest income	$	296,021		$	293,572		$	296,675		$	300,896		$	322,261
Tax-equivalent adjustment	2,196			2,100			2,112			2,214			2,200
Tax-equivalent net interest income	298,217			295,672			298,787			303,110			324,461
Total other operating revenue	259,704			161,701			204,883			198,152			209,049
Less: Gain (loss) on available for sale securities, net	34			(45,171)			(27,626)			—			(3,010)
Denominator for efficiency ratio	$	557,887		$	502,544		$	531,296		$	501,262		$	536,520
Less: Gain on sale of BOKF Insurance	—			—			31,007			—			—
Less: Gain on converted Visa shares	53,817			—			—			—			—
Adjusted denominator for efficiency ratio	$	504,070		$	502,544		$	500,289		$	501,262		$	536,520
Efficiency ratio	59.83		%	67.13		%	71.62		%	64.01		%	58.75		%
Efficiency ratio excluding adjustments	64.00		%	65.85		%	66.63		%	64.01		%	58.75		%
Information on net interest income and net interest margin excluding trading activities:
Net interest income	$	296,021		$	293,572		$	296,675		$	300,896		$	322,261
Less: Trading activities net interest income	(275)			(498)			(3,305)			(7,343)			(3,461)
Net interest income excluding trading activities	$	296,296		$	294,070		$	299,980		$	308,239		$	325,722
Tax-equivalent adjustment	2,196			2,100			2,112			2,214			2,200
Tax-equivalent net interest income excluding trading activities	$	298,492		$	296,170		$	302,092		$	310,453		$	327,922
Average interest-earning assets	$	46,019,346		$	44,846,886		$	44,327,237		$	44,012,300		$	42,731,533
Less: Average trading activities interest-earning assets	5,922,891			5,371,209			5,448,403			5,444,587			4,274,803
Average interest-earning assets excluding trading activities	$	40,096,455		$	39,475,677		$	38,878,834		$	38,567,713		$	38,456,730
Net interest margin on average interest-earning assets	2.56		%	2.61		%	2.64		%	2.69		%	3.00		%
Net interest margin on average trading activities interest-earning assets	(0.05)		%	(0.07)		%	(0.20)		%	(0.49)		%	(0.34)		%
Net interest margin on average interest-earning assets excluding trading activities	2.94		%	2.97		%	3.03		%	3.14		%	3.36		%

Explanation of Non-GAAP Measures

The tangible common equity ratio and return on average tangible common equity are primarily based on total shareholders' equity, which includes unrealized gains and losses on available for sale securities, less intangible assets and equity that do not benefit common shareholders. The adjusted tangible common equity ratio also includes unrealized gains and losses on the investment portfolio. These measures are valuable indicators of a financial institution's capital strength since they eliminate intangible assets from shareholders' equity and retain the effect of unrealized losses on securities and other components of accumulated other comprehensive income in shareholders' equity.

Pre-provision net revenue is a measure of revenue less expenses and is calculated before provision for credit losses and income tax expense. This financial measure is frequently used by investors and analysts and enables them to assess a company's ability to generate earnings to cover credit losses through a credit cycle. It also provides an additional basis for comparing the results

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of operations between periods by isolating the impact of the provision for credit losses, which can vary significantly between periods.

We believe adjusting net income and earnings per share for notable non-core items enhances comparability of results with prior periods, demonstrates the impact of significant items and provides a useful measure for determining the Company's expenses that are core to our business operations and are expected to recur over time.

The efficiency ratio measures the Company's ability to use its assets and manage its liabilities effectively in the current period.

Net interest income and net interest margin excluding trading activities remove the effect of trading activities on these metrics allowing management and investors to assess the performance of the Company's core lending and deposit activities without the associated volatility from trading activities.

Market Risk

Market risk is a broad term for the risk of economic loss due to adverse changes in the fair value of a financial instrument. These changes may be the result of various factors, including interest rates, foreign exchange rates, commodity prices or equity prices. Financial instruments that are subject to market risk can be classified either as held for trading or held for purposes other than trading. Market risk excludes changes in fair value due to the credit of the individual issuers of financial instruments.

BOK Financial is subject to market risk primarily through the effect of changes in interest rates on both its assets held for purposes other than trading and trading assets. The effects of other changes, such as foreign exchange rates, commodity prices or equity prices do not pose significant market risk to BOK Financial. BOK Financial has no material investments in assets that are affected by changes in foreign exchange rates or equity prices. Energy and agricultural product derivative contracts, which are affected by changes in commodity prices, are matched against offsetting contracts as previously discussed.

The Asset/Liability Committee is responsible for managing market risk in accordance with policy limits established by the Board of Directors. The Committee monitors projected variation in net interest income, net income and economic value of equity due to specified changes in interest rates. These limits also set maximum levels for short-term borrowings, short-term assets, public funds and brokered deposits and establish minimum levels for unpledged assets, among other things. Further, the Board has approved market risk limits for fixed income trading, mortgage pipeline and mortgage servicing assets inclusive of economic hedge benefits. Exposure is measured daily and compliance is reviewed monthly. Deviations from the Board approved limits, which periodically occur throughout the reporting period, may require management to develop and execute plans to reduce exposure. These plans are subject to escalation to and approval by the Board.

The simulations used to manage market risk are based on numerous assumptions regarding the effects of changes in interest rates on the timing and extent of repricing characteristics, future cash flows and customer behavior. These assumptions are inherently uncertain and, as a result, models cannot precisely estimate or precisely predict the impact of higher or lower interest rates. Actual results will differ from simulated results due to timing, magnitude and frequency of interest rate changes, market conditions and management strategies, among other factors.

Interest Rate Risk – Other than Trading

As previously noted in the Net Interest Income section of this report, management has implemented strategies to manage the Company's balance sheet exposure to changes in interest rates over a twelve-month period within established policy limits. The effectiveness of these strategies in managing the overall interest rate risk is evaluated through the use of an asset/liability model. BOK Financial performs a sensitivity analysis to identify more dynamic interest rate risk exposures, including embedded option positions, on net interest income. A simulation model is used to estimate the effect of changes in interest rates on our performance across multiple interest rate scenarios. Our current internal policy limit for net interest income variation due to a 200 basis point parallel change in market interest rates over twelve months is a maximum decline of 6.5%. Management also reviews alternative rate changes and time periods.

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The Company's primary interest rate exposures include the Federal Funds rate, which affects short-term borrowings, and the prime lending rate, SOFR, which is the basis for much of the variable rate loan pricing. Additionally, residential mortgage rates directly affect the prepayment speeds for residential mortgage-backed securities and mortgage servicing rights. Derivative financial instruments and other financial instruments used for purposes other than trading are included in this simulation. In addition, the impact on the level and composition of demand deposit accounts and other core deposit balances resulting from a significant increase in short-term market interest rates and the overall interest rate environment is likely to be material. The simulation incorporates assumptions regarding the effects of such changes based on a combination of historical analysis and expected behavior. The impact of planned growth and new business activities is factored into the simulation model.

The interest rate sensitivity in Table 24 indicates management's estimation of the impact of rate changes on net interest income. Should deposit costs be 10% more sensitive to changes in rates, the variation in net interest income over the next twelve months would be 0.94% or $11.6 million for the 100 basis point decrease scenario. Alternatively, should deposit funding costs be 10% less sensitive to changes in rates, the variation in net interest income over the next twelve months would be (0.27)%, or ($3.3 million) for the 100 basis point decrease scenario. Additionally, in a flattening yield curve scenario where long-term rates increase by 100 basis points and short-term rates increase by 200 basis points, net interest income would decrease approximately 5.99%, or $73.7 million.

Table 24 – Interest Rate Sensitivity

(Dollars in thousands)

	June 30, 2024												Mar. 31, 2024
	200 bp Increase			100 bp Increase			100 bp Decrease			200 bp Decrease			200 bp Increase			100 bp Increase			100 bp Decrease			200 bp Decrease
Anticipated impact over the next twelve months on net interest income	$	(39,800)		$	(9,500)		$	3,000		$	12,300		$	(29,900)		$	(4,600)		$	(2,500)		$	900
	(3.21)		%	(0.76)		%	0.24		%	0.99		%	(2.31)		%	(0.35)		%	(0.20)		%	0.07		%
Anticipated impact over months twelve through twenty-four	$	(23,000)		$	11,100		$	(26,400)		$	(39,900)		$	(3,400)		$	20,800		$	(38,600)		$	(62,500)
	(1.70)		%	0.82		%	(1.95)		%	(2.95)		%	(0.24)		%	1.46		%	(2.70)		%	(4.37)		%

BOK Financial is also subjected to market risk through changes in the fair value of mortgage servicing rights. Changes in the fair value of mortgage servicing rights are highly dependent on changes in primary mortgage rates offered to borrowers, intermediate-term interest rates that affect the value of custodial funds, and assumptions about servicing revenues, servicing costs and discount rates. As primary mortgage rates increase, prepayment speeds slow and the value of our mortgage servicing rights increases. As primary mortgage rates fall, prepayment speeds increase and the value of our mortgage servicing rights decreases.

We maintain a portfolio of financial instruments which may include debt securities issued by the U.S. government or its agencies and interest rate derivative contracts, held as an economic hedge of the changes in the fair value of our mortgage servicing rights. Composition of this portfolio will change based on our assessment of market risk. Changes in the fair value of residential mortgage-backed securities are highly dependent on changes in secondary mortgage rates required by investors, and interest rate derivative contracts are highly dependent on changes in other market interest rates. While primary and secondary mortgage rates generally move in the same direction, the spread between them may widen and narrow due to market conditions and government intervention. Changes in the forward-looking spread between the primary and secondary rates can cause significant earnings volatility.

Management performs a stress test to measure market risk due to changes in interest rates inherent in its MSR portfolio and hedges. The stress test shocks applicable interest rates up and down 50 basis points and calculates an estimated change in fair value, net of economic hedging activity, that may result. The Board has approved a $20 million market risk limit for mortgage servicing rights, net of economic hedges.

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Table 25 – MSR Asset and Hedge Sensitivity Analysis

(In thousands)

	June 30, 2024				Mar. 31, 2024
	Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp
MSR Asset	$	8,731	$	(10,254)	$	8,840	$	(10,181)
MSR Hedge	(8,840)		9,007		(9,131)		9,295
Net Exposure	$	(109)	$	(1,247)	$	(291)	$	(886)

Trading Activities

The Company bears market risk by originating RMHFS. RMHFS are generally outstanding for 60 to 90 days, which represents the typical period from commitment to originate a loan to sale of the closed loan to an investor. Primary mortgage interest rate changes during this period affect the value of RMHFS commitments and loans. We use forward sale contracts to mitigate market risk on all closed mortgage loans held for sale and on an estimate of mortgage loan commitments that are expected to result in closed loans.

A variety of methods are used to monitor market risk of mortgage origination activities. These methods include daily marking of all positions to market value, independent verification of inventory pricing, and revenue sensitivity limits.

Management performs a stress test to measure market risk due to changes in interest rates inherent in the mortgage production pipeline. The stress test shocks applicable interest rates up and down 50 basis points and calculates an estimated change in fair value, net of economic hedging activity that may result. The Board has approved a $7 million market risk limit for the mortgage production pipeline, net of forward sale contracts.

Table 26 – Mortgage Pipeline Sensitivity Analysis

(In thousands)

	Three Months Ended								Six Months Ended June 30,
	June 30, 2024				Mar. 31, 2024				2024				2023
	Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp
Average1	$	(64)	$	(57)	$	(36)	$	(19)	$	(50)	$	(38)	$	(87)	$	(37)
Low2	23		32		93		126		93		126		—		61
High3	(173)		(108)		(240)		(151)		(240)		(151)		(186)		(168)
Period End	(138)		(65)		(154)		52		(138)		(65)		(88)		(99)

1    Average represents the simple average of each daily value observed during the reporting period.

2    Low represents least risk of loss in fair value measured as the smallest negative value or the largest positive value observed daily during the reporting period.

3    High represents the greatest risk of loss in fair value measured as the largest negative value or the smallest positive value observed daily during the reporting period.

BOK Financial enters into trading activities both as an intermediary for customers and for its own account. As an intermediary, we take positions in securities, generally residential mortgage-backed securities, government agency securities and municipal bonds. These securities are purchased for resale to customers, which include individuals, corporations, foundations and financial institutions. On a limited basis, we may also take trading positions in U.S. Treasury securities, residential mortgage-backed securities and municipal bonds to enhance returns on securities portfolios. Both of these activities involve interest rate risk, liquidity risk and price risk.

A variety of methods are used to monitor and manage the market risk of trading activities. These methods include daily marking of all positions to market value, independent verification of inventory pricing, and position limits for each trading activity. Risk management tools include VaR, stress testing and sensitivity analysis. Economic hedges in either the futures or cash markets may be used to reduce the risk associated with some trading programs. Basis risk can result when trading asset values and the instruments used to hedge them move at different rates.

VaR measures the potential loss of a given position or portfolio of positions at a specified confidence level and time horizon. BOK Financial utilizes a historical VaR methodology to measure and aggregate risks across its covered trading positions. For Market Risk Rule purposes, the Company calculates VaR using a historical simulation approach and measures the potential trading losses using a 10-day holding period and a 99% confidence level.

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Due to inherent limitations of the VaR methodology, including its reliance on past market behavior, which might not be indicative of future market performance, VaR is only one of several tools used to measure and manage market risk. Other tools used to actively manage market risk include stress testing (SVaR) and sensitivity analysis.

SVaR is calculated using the same internal models as used for the VaR-based measure. SVaR is calculated over a ten-day holding period at a one-tail, 99% confidence level and employs a historical simulation approach based on a continuous twelve-month historical window selected to reflect a period of significant financial stress for the Company's trading portfolio.

The trading portfolio's VaR and SVaR profiles are influenced by a variety of factors, including the size and composition of the portfolio, market volatility, and the correlation between different positions. A portfolio of trading positions is typically less risky than the sum of the risk from each of the individual sub-portfolios because, under normal market conditions, risk within each category partially offsets the exposure to other risk categories. Table 27 below summarizes certain VaR and SVaR based measures for the three months ended June 30, 2024, March 31, 2024, June 30, 2023 and March 31, 2023.

Table 27 – VaR and SVaR Measures

(In thousands)

	Three Months Ended
	June 30, 2024				Mar. 31, 2024				June 30, 2023				Mar. 31, 2023
	10 day 99% VaR		10 day 99% SVaR		10 day 99% VaR		10 day 99% SVaR		10 day 99% VaR		10 day 99% SVaR		10 day 99% VaR		10 day 99% SVaR
Average1	$	3,711	$	6,232	$	5,053	$	6,388	$	4,429	$	7,239	$	4,059	$	7,461
Low	1,776		3,763		2,634		4,190		3,046		4,171		1,944		3,156
High	6,862		9,751		8,149		8,268		7,913		14,861		8,487		15,571
Period End	2,200		6,795		4,677		4,931		5,863		5,863		4,036		8,907

1    Average represents the simple average of each daily value observed during the reporting period.

The Company monitors the accuracy of internal VaR models and modeling processes by back-testing model performance. The Company updates historical data used by the VaR model on a regular basis, and model validators independent of business lines perform regular validations to access model input, processing and reporting components. These models are required to be independently validated and approved prior to implementation.

Limit Structure

Beyond VaR and SVaR described above, Management also performs a sensitivity analysis to measure market risk from changes in interest rates on its trading portfolio. Applicable interest rates are shocked up and down 50 basis points, calculating an estimated change in fair value, net of economic hedging activity that may result. The Board has approved an $11 million market risk limit for the trading portfolio, net of economic hedges.

Table 28 – Trading Sensitivity Analysis

(In thousands)

	Three Months Ended								Six Months Ended June 30,
	June 30, 2024				Mar. 31, 2024				2024				2023
	Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp		Up 50 bp		Down 50 bp
Average1	$	(3,287)	$	5,130	$	(3,745)	$	5,197	$	(3,516)	$	5,163	$	49	$	477
Low2	3,920		8,936		1,684		8,685		3,920		8,936		4,513		6,202
High3	(6,602)		(1,827)		(6,898)		(59)		(6,898)		(1,827)		(4,758)		(4,538)
Period End	(1,608)		3,479		(5,454)		7,069		(1,608)		3,479		(3,693)		4,886

1    Average represents the simple average of each daily value observed during the reporting period.

2    Low represents least risk of loss in fair value measured as the smallest negative value or the largest positive value observed daily during the reporting period.

3    High represents the greatest risk of loss in fair value measured as the largest negative value or the smallest positive value observed daily during the reporting period.

Model Risk Management

BOK Financial has an internal independent Model Risk Management staff that validates models to verify they are conceptually sound, computationally accurate, are performing as expected and are in line with their intended use. Model Risk Management staff also enforces the Company's model risk governance program that defines roles and responsibilities, including the authority to levy findings requiring remediation and to restrict model usage.

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Model Validation

Model validation staff maintain independence from both the developers and users of the models. Models are validated through an evaluation process that assesses the data, theory, implementation, outcomes and governance of each scenario. Each model receives a model risk score, which determines the frequency and scope of validation activities. Validations comprise an assessment of model performance as well as a model's potential limitations given its particular assumptions or weaknesses. Based on the results of the review, the team determines whether the use case for the model is appropriate. The ultimate validation results may require remediation actions from the business line. Model validation results are communicated with one of the following three outcomes: "Approved for use," "Approved with findings" or "Unapproved."

Controls and Procedures

As required by Rule 13a-15(b), BOK Financial's management, including the Chief Executive Officer and Chief Financial Officer, conducted an evaluation as of the end of the period covered by their reports, of the effectiveness of the Company's disclosure controls and procedures as defined in Exchange Act Rule 13a-15(e). Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures were effective as of the end of the period covered by this report. As required by Rule 13a-15(d), BOK Financial's management, including the Chief Executive Officer and Chief Financial Officer, also conducted an evaluation of the Company's internal controls over financial reporting to determine whether any changes occurred during the quarter covered by this report that have materially affected, or are reasonably likely to materially affect, the Company's internal controls over financial reporting. Based on that evaluation, there has been no such change during the quarter covered by this report.

Forward-Looking Statements

This report contains forward-looking statements that are based on management's beliefs, assumptions, current expectations, estimates and projections about BOK Financial Corporation, the financial services industry, and the economy generally and the related responses of the government, consumers, and others, on our business, financial condition and results of operations. Words such as "anticipates," "believes," "estimates," "expects," "forecasts," "plans," "outlook," "projects," "will," "intends," variations of such words and similar expressions are intended to identify such forward-looking statements. Management judgments relating to and discussion of the provision and allowance for credit losses, allowance for uncertain tax positions, accruals for loss contingencies and valuation of mortgage servicing rights involve judgments as to expected events and are inherently forward-looking statements. Assessments that acquisitions and growth endeavors will be profitable are necessary statements of belief as to the outcome of future events based in part on information provided by others which BOK Financial has not independently verified. These various forward-looking statements are not guarantees of future performance and involve certain risks, uncertainties, and assumptions which are difficult to predict with regard to timing, extent, likelihood and degree of occurrence. Therefore, actual results and outcomes may materially differ from what is expected, implied or forecasted in such forward-looking statements. Internal and external factors that might cause such a difference include, but are not limited to changes in government, consumer or business responses to changes in commodity prices, interest rates and interest rate relationships, inflation, demand for products and services, the degree of competition by traditional and nontraditional competitors, changes in banking regulations, tax laws, prices, levies and assessments, the impact of technological advances, and trends in customer behavior as well as their ability to repay loans. BOK Financial and its affiliates undertake no obligation to update, amend or clarify forward-looking statements, whether as a result of new information, future events, or otherwise.

Annualized, pro forma, projected and estimated numbers are used for illustrative purpose only, are not forecasts and may not reflect actual results.

In this report we may sometimes use non-GAAP financial measures. Please note that although non-GAAP financial measures provide useful insight to analysts, investors and regulators, they should not be considered in isolation or relied upon as a substitute for analysis using GAAP measures. If applicable, we provide GAAP reconciliations for non-GAAP financial measures.

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Consolidated Statements of Earnings (Unaudited)
(In thousands, except share and per share data)	Three Months Ended				Six Months Ended
	June 30,				June 30,
Interest revenue	2024		2023		2024		2023
Loans	$	447,114	$	399,182	$	885,791	$	767,052
Residential mortgage loans held for sale	1,348		1,092		2,271		2,071
Trading securities	74,801		47,821		143,038		81,830
Investment securities	7,564		8,586		15,393		17,514
Available for sale securities	123,828		94,589		237,316		183,325
Fair value option securities	194		3,116		389		7,009
Restricted equity securities	9,192		6,429		18,050		12,237
Interest-bearing cash and cash equivalents	7,776		9,552		14,781		16,058
Total interest revenue	671,817		570,367		1,317,029		1,087,096
Interest expense
Deposits	254,753		136,666		496,877		231,940
Borrowed funds	118,737		109,221		225,941		176,259
Subordinated debentures	2,306		2,219		4,618		4,288
Total interest expense	375,796		248,106		727,436		412,487
Net interest income	296,021		322,261		589,593		674,609
Provision for credit losses	8,000		17,000		16,000		33,000
Net interest income after provision for credit losses	288,021		305,261		573,593		641,609
Other operating revenue
Brokerage and trading revenue	53,017		65,006		112,196		117,402
Transaction card revenue	27,246		26,003		52,739		51,624
Fiduciary and asset management revenue	57,576		52,997		112,881		103,654
Deposit service charges and fees	29,572		27,100		58,257		53,068
Mortgage banking revenue	18,628		15,141		37,595		29,508
Other revenue	13,988		14,250		26,923		31,220
Total fees and commissions	200,027		200,497		400,591		386,476
Other gains, net	57,375		12,618		61,644		14,869
Loss on derivatives, net	(1,091)		(8,159)		(9,724)		(9,503)
Loss on fair value option securities, net	(94)		(2,158)		(399)		(5,120)
Change in fair value of mortgage servicing rights	3,453		9,261		14,430		3,202
Gain (loss) on available for sale securities, net	34		(3,010)		(45,137)		(3,010)
Total other operating revenue	259,704		209,049		421,405		386,914
Other operating expense
Personnel	191,090		190,652		393,743		372,797
Business promotion	8,250		7,640		16,228		16,209
Charitable contributions to BOKF Foundation	13,610		1,142		13,610		1,142
Professional fees and services	13,331		12,777		25,341		25,825
Net occupancy and equipment	30,245		30,105		60,538		58,564
FDIC and other insurance	7,317		6,974		16,057		14,289
FDIC special assessment	1,190		—		7,644		—
Data processing and communications	46,131		45,307		91,695		90,109
Printing, postage and supplies	3,789		3,728		7,786		7,621
Amortization of intangible assets	2,898		3,474		5,901		6,865
Mortgage banking costs	8,532		8,300		14,887		14,082
Other expense	10,307		8,574		23,644		16,982
Total other operating expense	336,690		318,673		677,074		624,485
Net income before taxes	211,035		195,637		317,924		404,038
Federal and state income taxes	47,303		44,001		70,498		89,906
Net income	163,732		151,636		247,426		314,132
Net income attributable to non-controlling interests	19		328		10		456
Net income attributable to BOK Financial Corporation shareholders	$	163,713	$	151,308	$	247,416	$	313,676
Earnings per share:
Basic	$	2.54	$	2.27	$	3.83	$	4.70
Diluted	$	2.54	$	2.27	$	3.83	$	4.70
Average shares used in computation:
Basic	63,714,204		65,994,132		64,002,154		66,162,048
Diluted	63,714,204		65,994,132		64,002,154		66,162,048
Dividends declared per share	$	0.55	$	0.54	$	1.10	$	1.08

See accompanying notes to consolidated financial statements.

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Consolidated Statements of Comprehensive Income (Unaudited)
(In thousands)
	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2024		2023		2024		2023
Net income	$	163,732	$	151,636	$	247,426	$	314,132
Other comprehensive income (loss) before income taxes:
Net change in unrealized gain (loss)	(5,943)		(160,408)		(77,749)		(36,363)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	12,027		16,033		24,210		32,084
Loss (gain) on available for sale securities, net	(34)		3,010		45,137		3,010
Other comprehensive income (loss) before income taxes	6,050		(141,365)		(8,402)		(1,269)
Federal and state income taxes	1,424		(33,247)		(2,000)		(1,552)
Other comprehensive income (loss), net of income taxes	4,626		(108,118)		(6,402)		283
Comprehensive income	168,358		43,518		241,024		314,415
Comprehensive income attributable to non-controlling interests	19		328		10		456
Comprehensive income attributable to BOK Financial Corporation shareholders	$	168,339	$	43,190	$	241,014	$	313,959

See accompanying notes to consolidated financial statements.

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Consolidated Balance Sheets

(In thousands, except share data)

	June 30, 2024		Dec. 31, 2023
	(Unaudited)		(Footnote 1)
Assets
Cash and due from banks	$	897,811	$	947,613
Interest-bearing cash and cash equivalents	178,352		400,652
Trading securities	5,212,791		5,193,505
Investment securities, net of allowance (fair value: June 30, 2024 – $1,924,532; December 31, 2023 – $2,072,586)	2,128,881		2,244,153
Available for sale securities	12,793,784		12,286,681
Fair value option securities	19,050		20,671
Restricted equity securities	475,209		423,099
Residential mortgage loans held for sale	107,465		56,935
Loans	24,553,581		23,904,968
Allowance for loan losses	(287,826)		(277,123)
Loans, net of allowance	24,265,755		23,627,845
Premises and equipment, net	632,388		622,223
Receivables	334,019		317,922
Goodwill	1,044,749		1,044,749
Intangible assets, net	54,028		59,979
Mortgage servicing rights	333,246		293,884
Real estate and other repossessed assets, net of allowance (June 30, 2024 – $5,355; December 31, 2023 – $5,355)	2,334		2,875
Derivative contracts, net	225,076		410,304
Cash surrender value of bank-owned life insurance	412,278		409,548
Receivable on unsettled securities sales	14,673		391,910
Other assets	1,271,568		1,070,282
Total assets	$	50,403,457	$	49,824,830
Liabilities and Equity
Liabilities:
Non-interest bearing demand deposits	$	8,840,178	$	9,196,493
Interest-bearing deposits:
Transaction	23,107,042		20,964,101
Savings	830,489		847,085
Time	3,463,935		3,012,022
Total deposits	36,241,644		34,019,701
Funds purchased and repurchase agreements	813,758		1,122,748
Other borrowings	6,528,538		7,701,552
Subordinated debentures	131,156		131,150
Accrued interest, taxes and expense	305,839		338,996
Derivative contracts, net	287,509		587,473
Due on unsettled securities purchases	347,663		254,057
Other liabilities	515,380		523,734
Total liabilities	45,171,487		44,679,411
Shareholders' equity:
Common stock (0.00006 par value; 2,500,000,000 shares authorized; shares issued and outstanding: June 30, 2024 – 76,822,776; December 31, 2023 – 76,593,292)	5		5
Capital surplus	1,416,807		1,406,745
Retained earnings	5,387,949		5,211,512
Treasury stock (shares at cost: June 30, 2024 – 12,694,952; December 31, 2023 – 11,626,115)	(970,129)		(876,720)
Accumulated other comprehensive income (loss)	(605,502)		(599,100)
Total shareholders' equity	5,229,130		5,142,442
Non-controlling interests	2,840		2,977
Total equity	5,231,970		5,145,419
Total liabilities and equity	$	50,403,457	$	49,824,830

See accompanying notes to consolidated financial statements.

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Consolidated Statements of Changes in Equity (Unaudited)

(In thousands)

	Common Stock			Capital Surplus		Retained Earnings		Treasury Stock			Accumulated Other Comprehensive Income (Loss)		Total Shareholders' Equity		Non- Controlling Interests		Total Equity
	Shares	Amount						Shares	Amount
Balance, March 31, 2024	76,793	$	5	$	1,411,293	$	5,259,646	12,278	$	(932,065)	$	(610,128)	$	5,128,751	$	2,884	$	5,131,635
Net income	—	—		—		163,713		—	—		—		163,713		19		163,732
Other comprehensive income	—	—		—		—		—	—		4,626		4,626		—		4,626
Repurchase of common stock	—	—		—		—		412	(37,626)		—		(37,626)		—		(37,626)
Share-based compensation plans:
Non-vested shares awarded,      net	30	—		—		—		—	—		—		—		—		—
Vesting of non-vested      shares	—	—		—		—		5	(438)		—		(438)		—		(438)
Share-based compensation	—	—		5,514		—		—	—		—		5,514		—		5,514
Cash dividends on common      stock	—	—		—		(35,410)		—	—		—		(35,410)		—		(35,410)
Capital calls and distributions,      net	—	—		—		—		—	—		—		—		(63)		(63)
Balance, June 30, 2024	76,823	$	5	$	1,416,807	$	5,387,949	12,695	$	(970,129)	$	(605,502)	$	5,229,130	$	2,840	$	5,231,970
Balance, December 31, 2023	76,593	$	5	$	1,406,745	$	5,211,512	11,626	$	(876,720)	$	(599,100)	$	5,142,442	$	2,977	$	5,145,419
Net income	—	—		—		247,416		—	—		—		247,416		10		247,426
Other comprehensive loss	—	—		—		—		—	—		(6,402)		(6,402)		—		(6,402)
Repurchase of common stock	—	—		—		—		1,029	(89,779)		—		(89,779)		—		(89,779)
Share-based compensation      plans:
Non-vested shares awarded,      net	230	—		—		—		—	—		—		—		—		—
Vesting of non-vested      shares	—	—		—		—		40	(3,630)		—		(3,630)		—		(3,630)
Share-based compensation	—	—		10,062		—		—	—		—		10,062		—		10,062
Cash dividends on common      stock	—	—		—		(70,979)		—	—		—		(70,979)		—		(70,979)
Capital calls and distributions, net	—	—		—		—		—	—		—		—		(147)		(147)
Balance, June 30, 2024	76,823	$	5	$	1,416,807	$	5,387,949	12,695	$	(970,129)	$	(605,502)	$	5,229,130	$	2,840	$	5,231,970

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	Common Stock			Capital Surplus		Retained Earnings		Treasury Stock			Accumulated Other Comprehensive Income (Loss)		Total Shareholders' Equity		Non- Controlling Interests		Total Equity
	Shares	Amount						Shares	Amount
Balance, March 31, 2023	76,556	$	5	$	1,397,096	$	4,950,176	9,955	$	(743,937)	$	(728,554)	$	4,874,786	$	3,241	$	4,878,027
Net income	—	—		—		151,308		—	—		—		151,308		328		151,636
Other comprehensive loss	—	—		—		—		—	—		(108,118)		(108,118)		—		(108,118)
Repurchase of common stock	—	—		—		—		266	(22,590)		—		(22,590)		—		(22,590)
Share-based compensation      plans:
Non-vested shares awarded,      net	36	—		—		—		—	—		—		—		—		—
Vesting of non-vested      shares	—	—		—		—		2	(194)		—		(194)		—		(194)
Share-based compensation	—	—		4,413		—		—	—		—		4,413		—		4,413
Cash dividends on common      stock	—	—		—		(35,751)		—	—		—		(35,751)		—		(35,751)
Capital calls and distributions,      net	—	—		—		—		—	—		—		—		(26)		(26)
Balance, June 30, 2023	76,592	$	5	$	1,401,509	$	5,065,733	10,223	$	(766,721)	$	(836,672)	$	4,863,854	$	3,543	$	4,867,397
Balance, December 31, 2022	76,423	$	5	$	1,390,395	$	4,824,164	9,465	$	(694,960)	$	(836,955)	$	4,682,649	$	4,709	$	4,687,358
Net income	—	—		—		313,676		—	—		—		313,676		456		314,132
Other comprehensive income	—	—		—		—		—	—		283		283		—		283
Repurchase of common stock	—	—		—		—		713	(67,066)		—		(67,066)		—		(67,066)
Share-based compensation      plans:
Non-vested shares awarded,      net	169	—		—		—		—	—		—		—		—		—
Vesting of non-vested      shares	—	—		—		—		45	(4,695)		—		(4,695)		—		(4,695)
Share-based compensation	—	—		11,114		—		—	—		—		11,114		—		11,114
Cash dividends on common      stock	—	—		—		(72,107)		—	—		—		(72,107)		—		(72,107)
Capital calls and distributions,      net	—	—		—		—		—	—		—		—		(1,622)		(1,622)
Balance, June 30, 2023	76,592	$	5	$	1,401,509	$	5,065,733	10,223	$	(766,721)	$	(836,672)	$	4,863,854	$	3,543	$	4,867,397

See accompanying notes to consolidated financial statements.

- 48 -

Consolidated Statements of Cash Flows (Unaudited)

(In thousands)

	Six Months Ended
	June 30,
	2024		2023
Cash Flows From Operating Activities:
Net income	$	247,426	$	314,132
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses	16,000		33,000
Change in fair value of mortgage servicing rights due to market assumption changes	(14,430)		(3,202)
Change in the fair value of mortgage servicing rights due to principal payments	13,459		13,829
Net unrealized (gains) losses from derivative contracts	(108,051)		(25,310)
Share-based compensation	10,062		11,114
Depreciation and amortization	52,076		56,583
Net amortization of discounts and premiums	(20,111)		(8,733)
Net losses (gains) on financial instruments and other losses (gains), net	(16,615)		(11,617)
Net loss (gain) on mortgage loans held for sale	(4,613)		2,153
Mortgage loans originated for sale	(379,214)		(353,409)
Proceeds from sale of mortgage loans held for sale	334,578		332,944
Capitalized mortgage servicing rights	(6,970)		(6,603)
Charitable contributions to BOKF Foundation	13,610		—
Change in trading and fair value option securities	(17,671)		(893,843)
Change in receivables	264,352		(82,491)
Change in other assets	69,808		44,365
Change in other liabilities	189,069		17,318
Net cash provided by (used in) operating activities	642,765		(559,770)
Cash Flows From Investing Activities:
Proceeds from maturities or redemptions of investment securities	113,747		140,043
Proceeds from maturities or redemptions of available for sale securities	940,442		656,703
Purchases of investment securities	—		(2,504)
Purchases of available for sale securities	(2,244,168)		(1,266,764)
Proceeds from sales of available for sale securities	737,830		135,489
Change in amount receivable on unsettled available for sale securities transactions	95,997		(10,548)
Loans originated, net of principal collected	(651,931)		(678,700)
Net proceeds from derivative asset contracts	15,651		156,205
Net change in restricted equity securities	(52,110)		(30,435)
Proceeds from disposition of assets	12,600		29,136
Purchases of assets	(87,269)		(97,875)
Net cash provided by (used in) investing activities	(1,119,211)		(969,250)
Cash Flows From Financing Activities:
Net change in demand deposits, transaction deposits and savings accounts	1,770,030		(2,430,397)
Net change in time deposits	451,913		1,244,535
Net change in other borrowed funds	(1,490,267)		2,208,867
Net payments on derivative liability contracts	(20,415)		(151,457)
Net change in derivative margin accounts	(188,326)		707,266
Change in amount due on unsettled available for sale securities transactions	(154,203)		139,688
Issuance of common and treasury stock, net	(3,630)		(4,695)
Repurchase of common stock	(89,779)		(67,066)
Dividends paid	(70,979)		(72,107)
Net cash provided by (used in) financing activities	204,344		1,574,634
Net increase (decrease) in cash and cash equivalents	(272,102)		45,614
Cash and cash equivalents at beginning of period	1,348,265		1,401,716
Cash and cash equivalents at end of period	$	1,076,163	$	1,447,330
Supplemental Cash Flow Information:
Cash paid for interest	$	742,708	$	401,187
Cash paid for taxes	$	39,008	$	123,821
Net loans and bank premises transferred to repossessed real estate and other assets	$	77	$	225
Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period	$	8,263	$	7,768
Conveyance of other real estate owned guaranteed by U.S. government agencies	$	1,840	$	2,569
Right-of-use assets obtained in exchange for operating lease liabilities	$	18,236	$	64,899

See accompanying notes to consolidated financial statements.

- 49 -

Notes to Consolidated Financial Statements (Unaudited)

(1) Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements of BOK Financial 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, BOK Financial Securities, Inc. and BOK Financial Private Wealth, Inc. Operating divisions of BOKF, NA 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 2023 Form 10-K filed with the Securities and Exchange Commission, which contains audited financial statements. Amounts presented as of December 31, 2023 have been derived from the audited financial statements included in BOK Financial's 2023 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 and six-month periods ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024.

Newly Adopted and Pending Accounting Policies

Financial Accounting Standards Board

FASB ASU 2023-01, Leases (Topic 842): Common Control Arrangements

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 did not have a material impact on the Company's financial statements.

FASB ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

The FASB issued ASU 2023-07 on November 27, 2023 which is intended to improve reportable segment disclosure requirements. Under previous guidance, while entities were required to disclose segment revenue and measure of profit or loss, there has been limited disclosure around the reporting of segment expenses. In addition to enhanced disclosures about significant segment expenses, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the requirements of the expanded segment disclosures but does not expect the additional disclosures to have a material impact on the reported segment information.

- 50 -

FASB ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures

The FASB issued ASU 2023-09 on December 14, 2023 which amends income tax disclosures to provide information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance requires the entity to disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. The Company is currently assessing the impact ASU 2023-09 will have on its income tax disclosures.

FASB ASU 2024-01, Compensation—Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards

The FASB issued ASU 2024-01 on March 21, 2024 which provides illustrative guidance to help entities determine whether profits interest and similar awards should be accounted for as share-based payment arrangements within the scope of Topic 718, Compensation—Stock Compensation. The ASU is effective for annual periods beginning after December 15, 2024, including interim periods within those periods. Adoption of ASU 2024-01 is not expected to have a material impact on the Company's financial statements.

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(2) Securities

Trading Securities

The fair value and net unrealized gain (loss) included in trading securities are as follows (in thousands):

	June 30, 2024				December 31, 2023
	Fair Value		Net Unrealized Gain (Loss)		Fair Value		Net Unrealized Gain (Loss)
U.S. government securities	$	71,169	$	33	$	10,959	$	28
Residential agency mortgage-backed securities	5,023,892		5,742		5,105,137		98,124
Municipal securities	56,780		152		37,413		323
Other trading securities	60,950		83		39,996		160
Total trading securities	$	5,212,791	$	6,010	$	5,193,505	$	98,635

Investment Securities

The amortized cost and fair values of investment securities are as follows (in thousands):

	June 30, 2024
	Amortized		Carrying		Fair		Gross Unrealized
	Cost		Value1		Value		Gain		Loss
Municipal securities	$	107,188	$	107,188	$	109,700	$	2,976	$	(464)
Mortgage-backed securities:
Residential agency	2,129,826		1,990,626		1,786,096		91		(204,621)
Commercial agency	17,258		16,066		15,030		—		(1,036)
Other debt securities	15,288		15,288		13,706		—		(1,582)
Total investment securities	2,269,560		2,129,168		1,924,532		3,067		(207,703)
Allowance for credit losses	(287)		(287)		—		—		—
Investment securities, net of allowance	$	2,269,273	$	2,128,881	$	1,924,532	$	3,067	$	(207,703)

1    Carrying value includes $140 million of net unrealized loss which remains in 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.

	December 31, 2023
	Amortized		Carrying		Fair		Gross Unrealized
	Cost		Value1		Value		Gain		Loss
Municipal securities	$	120,705	$	120,705	$	125,525	$	5,014	$	(194)
Mortgage-backed securities:
Residential agency	2,255,340		2,092,083		1,917,810		125		(174,398)
Commercial agency	17,258		15,914		15,067		—		(847)
Other debt securities	15,787		15,787		14,184		—		(1,603)
Total investment securities	2,409,090		2,244,489		2,072,586		5,139		(177,042)
Allowance for credit losses	(336)		(336)		—		—		—
Investment securities, net of allowance	$	2,408,754	$	2,244,153	$	2,072,586	$	5,139	$	(177,042)

1    Carrying value includes $165 million of net unrealized loss which remains in 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.

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The amortized cost and fair values of investment securities at June 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):

	Less than One Year		One to Five Years		Six to Ten Years		Over Ten Years		Total		Weighted Average Maturity1
Fixed maturity debt securities:
Carrying value	$	18,247	$	101,521	$	18,761	$	13	$	138,542	3.10
Fair value	18,397		102,988		17,038		13		138,436
Residential mortgage-backed securities:
Carrying value									$	1,990,626	2
Fair value									1,786,096
Total investment securities:
Carrying value									$	2,129,168
Fair value									1,924,532

1Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.

2The average expected lives of residential mortgage-backed securities were 4.9 years based upon current prepayment assumptions.

Temporarily Impaired Investment Securities

(dollars in thousands):

	June 30, 2024
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investment:
Municipal securities	25	$	16,795	$	150	$	7,679	$	314	$	24,474	$	464
Mortgage-backed securities:
Residential agency	116	—		—		1,785,118		204,621		1,785,118		204,621
Commercial agency	2	—		—		15,030		1,036		15,030		1,036
Other debt securities	3	—		—		8,693		1,582		8,693		1,582
Total investment securities	146	$	16,795	$	150	$	1,816,520	$	207,553	$	1,833,315	$	207,703

	December 31, 2023
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investment:
Municipal securities	13	$	1,931	$	5	$	6,600	$	189	$	8,531	$	194
Mortgage-backed securities:
Residential agency	116	—		—		1,916,732		174,398		1,916,732		174,398
Commercial agency	2	—		—		15,067		847		15,067		847
Other debt securities	3	—		—		8,672		1,603		8,672		1,603
Total investment securities	134	$	1,931	$	5	$	1,947,071	$	177,037	$	1,949,002	$	177,042

- 53 -

Available for Sale Securities 

The amortized cost and fair value of available for sale securities are as follows (in thousands):

	June 30, 2024
	Amortized		Fair		Gross Unrealized
	Cost		Value		Gain		Loss
U.S. Treasury	$	1,000	$	923	$	—	$	(77)
Municipal securities	301,294		278,043		—		(23,251)
Mortgage-backed securities:
Residential agency	8,401,476		8,108,567		12,321		(305,230)
Residential non-agency	870,162		828,049		10,441		(52,554)
Commercial agency	3,868,588		3,577,729		816		(291,675)
Other debt securities	500		473		—		(27)
Total available for sale securities	$	13,443,020	$	12,793,784	$	23,578	$	(672,814)

	December 31, 2023
	Amortized		Fair		Gross Unrealized
	Cost		Value		Gain		Loss
U.S. Treasury	$	1,000	$	925	$	—	$	(75)
Municipal securities	544,707		502,833		1		(41,875)
Mortgage-backed securities:
Residential agency	7,066,645		6,834,720		36,983		(268,908)
Residential non-agency	833,535		799,877		12,865		(46,523)
Commercial agency	4,456,918		4,147,853		2,972		(312,037)
Other debt securities	500		473		—		(27)
Total available for sale securities	$	12,903,305	$	12,286,681	$	52,821	$	(669,445)

The amortized cost and fair values of available for sale securities at June 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):

	Less than One Year		One to Five Years		Six to Ten Years		Over Ten Years		Total		Weighted Average Maturity1
Fixed maturity debt securities:
Amortized cost	$	415,221	$	2,459,948	$	852,408	$	443,805	$	4,171,382	5.08
Fair value	411,548		2,242,456		780,072		423,092		3,857,168
Residential mortgage-backed securities:
Amortized cost									$	9,271,637	2
Fair value									8,936,615
Total available for sale securities:
Amortized cost									$	13,443,020
Fair value									12,793,784

1Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.

2The average expected lives of residential mortgage-backed securities were 4.3 years based upon current prepayment assumptions.

- 54 -

Sales of available for sale securities resulted in gains and losses as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Proceeds	$	1,836	$	135,489	$	737,830	$	135,489
Gross realized gains	222		703		455		703
Gross realized losses	(188)		(3,713)		(45,592)		(3,713)
Related federal and state income tax expense (benefit)	8		(708)		(10,616)		(708)

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 $12.6 billion at June 30, 2024 and $13.9 billion at December 31, 2023. The secured parties do not have the right to sell or repledge these securities.

Temporarily Impaired Available for Sale Securities

(Dollars in thousands)

	June 30, 2024
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for sale:
U.S. Treasury	1	$	—	$	—	$	923	$	77	$	923	$	77
Municipal securities	130	11,009		58		257,764		23,193		268,773		23,251
Mortgage-backed securities:
Residential agency	793	3,033,904		24,223		3,650,900		281,007		6,684,804		305,230
Residential non-agency	41	166,281		1,108		515,977		51,446		682,258		52,554
Commercial agency	240	183,004		2,009		3,151,499		289,666		3,334,503		291,675
Other debt securities	1	—		—		473		27		473		27
Total available for sale securities	1,206	$	3,394,198	$	27,398	$	7,577,536	$	645,416	$	10,971,734	$	672,814

	December 31, 2023
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for sale:
U.S. Treasury	1	$	—	$	—	$	925	$	75	$	925	$	75
Municipal securities	190	6,799		410		494,955		41,465		501,754		41,875
Mortgage-backed securities:
Residential agency	630	690,118		3,689		3,717,975		265,219		4,408,093		268,908
Residential non-agency	32	116,077		1,244		451,370		45,279		567,447		46,523
Commercial agency	269	392,828		2,626		3,421,757		309,411		3,814,585		312,037
Other debt securities	1	—		—		473		27		473		27
Total available for sale securities	1,123	$	1,205,822	$	7,969	$	8,087,455	$	661,476	$	9,293,277	$	669,445

Based on evaluations of impaired securities as of June 30, 2024, 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.

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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):

	June 30, 2024				December 31, 2023
	Fair Value		Net Unrealized Gain (Loss)		Fair Value		Net Unrealized Gain (Loss)
Residential agency mortgage-backed securities	$	19,050	$	(1,805)	$	20,671	$	(1,406)

(3) 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, interest rates, foreign exchange rates and other commodities 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 in the Consolidated Statements of Earnings.

- 56 -

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 June 30, 2024 (in thousands):

	Assets
	Notional1		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	$	2,964,667	$	109,692	$	(2,691)	$	107,001	$	(103,743)	$	3,258
Energy contracts	7,472,357		631,285		(435,236)		196,049		(38,770)		157,279
Foreign exchange contracts	35,606		35,451		—		35,451		(22)		35,429
Equity option contracts	1,593		158		—		158		(50)		108
Total customer risk management programs	10,474,223		776,586		(437,927)		338,659		(142,585)		196,074
Trading	25,238,831		82,976		(59,454)		23,522		(1,520)		22,002
Internal risk management programs	456,976		7,284		(284)		7,000		—		7,000
Total derivative contracts	$	36,170,030	$	866,846	$	(497,665)	$	369,181	$	(144,105)	$	225,076
	Liabilities
	Notional1		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	$	2,964,667	$	109,685	$	(2,691)	$	106,994	$	—	$	106,994
Energy contracts	7,851,998		619,809		(435,236)		184,573		(54,007)		130,566
Foreign exchange contracts	35,590		35,419		—		35,419		(34)		35,385
Equity option contracts	1,593		158		—		158		—		158
Total customer risk management programs	10,853,848		765,071		(437,927)		327,144		(54,041)		273,103
Trading	24,337,408		83,121		(59,454)		23,667		(10,545)		13,122
Internal risk management programs	79,617		1,568		(284)		1,284		—		1,284
Total derivative contracts	$	35,270,873	$	849,760	$	(497,665)	$	352,095	$	(64,586)	$	287,509

1    Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.

- 57 -

The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at December 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	$	2,754,476	$	108,450	$	(6,810)	$	101,640	$	(94,608)	$	7,032
Energy contracts	7,846,190		836,425		(399,148)		437,277		(169,141)		268,136
Foreign exchange contracts	54,999		53,863		—		53,863		(872)		52,991
Equity option contracts	3,316		54		—		54		(44)		10
Total customer risk management programs	10,658,981		998,792		(405,958)		592,834		(264,665)		328,169
Trading	16,264,818		118,545		(37,111)		81,434		(6,996)		74,438
Internal risk management programs	425,014		7,697		—		7,697		—		7,697
Total derivative contracts	$	27,348,813	$	1,125,034	$	(443,069)	$	681,965	$	(271,661)	$	410,304
	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	$	2,754,476	$	108,402	$	(6,810)	$	101,592	$	—	$	101,592
Energy contracts	8,254,004		831,467		(399,148)		432,319		(6,441)		425,878
Foreign exchange contracts	54,405		53,065		—		53,065		—		53,065
Equity option contracts	3,316		54		—		54		—		54
Total customer risk management programs	11,066,201		992,988		(405,958)		587,030		(6,441)		580,589
Trading	20,644,156		224,648		(37,111)		187,537		(181,917)		5,620
Internal risk management programs	2,244		1,264		—		1,264		—		1,264
Total derivative contracts	$	31,712,601	$	1,218,900	$	(443,069)	$	775,831	$	(188,358)	$	587,473

1    Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.

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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
	June 30, 2024				June 30, 2023
	Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net		Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net
Customer risk management programs:
Interest rate contracts	$	547	$	—	$	2,339	$	—
Energy contracts	6,162		—		11,250		—
Foreign exchange contracts	56		—		53		—
Equity option contracts	—		—		—		—
Total customer risk management programs	6,765		—		13,642		—
Trading1	32,576		—		64,172		—
Internal risk management programs	—		(1,091)		—		(8,159)
Total derivative contracts	$	39,341	$	(1,091)	$	77,814	$	(8,159)

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.

	Six Months Ended
	June 30, 2024				June 30, 2023
	Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net		Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net
Customer risk management programs:
Interest rate contracts	3,007		—		4,109		—
Energy contracts	9,977		—		17,803		—
Foreign exchange contracts	106		—		84		—
Equity option contracts	—		—		—		—
Total customer risk management programs	13,090		—		21,996		—
Trading1	116,282		—		1,079		—
Internal risk management programs	—		(9,724)		—		(9,503)
Total derivative contracts	$	129,372	$	(9,724)	$	23,075	$	(9,503)

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.

(4) Loans and Allowances for Credit Losses

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.

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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 are 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. 

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Portfolio segments of the loan portfolio are as follows (in thousands):

	June 30, 2024								December 31, 2023
	Fixed Rate		Variable Rate		Non-accrual		Total		Fixed Rate		Variable Rate		Non-accrual		Total
Commercial	$	3,604,024	$	11,960,951	$	58,434	$	15,623,409	$	3,558,563	$	11,135,075	$	110,131	$	14,803,769
Commercial real estate	756,055		4,314,637		12,883		5,083,575		791,757		4,538,570		7,320		5,337,647
Loans to individuals	2,428,707		1,398,524		19,366		3,846,597		2,282,914		1,452,620		28,018		3,763,552
Total	$	6,788,786	$	17,674,112	$	90,683	$	24,553,581	$	6,633,234	$	17,126,265	$	145,469	$	23,904,968

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 June 30, 2024, outstanding commitments totaled $14.1 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 June 30, 2024, outstanding standby letters of credit totaled $737 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 ongoing 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.

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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% 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% of the committed dollars in the portfolio is calculated using charge-off migration.

The expected credit loss on approximately 1% 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.

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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
	June 30, 2024
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	146,267	$	97,479	$	37,877	$	281,623
Provision for loan losses	10,441		(1,042)		3,749		13,148
Loans charged off	(6,391)		(205)		(1,344)		(7,940)
Recoveries of loans previously charged off	420		24		551		995
Ending balance	$	150,737	$	96,256	$	40,833	$	287,826
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	17,790	$	27,865	$	1,664	$	47,319
Provision for off-balance sheet credit risk	(474)		(4,551)		42		(4,983)
Ending balance	$	17,316	$	23,314	$	1,706	$	42,336

	Six Months Ended
	June 30, 2024
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	141,232	$	94,718	$	41,173	$	277,123
Provision for loan losses	18,752		2,953		1,403		23,108
Loans charged off	(10,631)		(1,455)		(2,914)		(15,000)
Recoveries of loans previously charged off	1,384		40		1,171		2,595
Ending balance	$	150,737	$	96,256	$	40,833	$	287,826
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	19,762	$	27,439	$	1,776	$	48,977
Provision for off-balance sheet credit risk	(2,446)		(4,125)		(70)		(6,641)
Ending balance	$	17,316	$	23,314	$	1,706	$	42,336

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	Three Months Ended
	June 30, 2023
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	139,898	$	66,003	$	43,559	$	249,460
Provision for loan losses	5,420		14,300		237		19,957
Loans charged off	(2,797)		(4,000)		(1,252)		(8,049)
Recoveries of loans previously charged off	748		44		554		1,346
Ending balance	$	143,269	$	76,347	$	43,098	$	262,714
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	20,608	$	40,211	$	2,124	$	62,943
Provision for off-balance sheet credit risk	(314)		(2,530)		(159)		(3,003)
Ending balance	$	20,294	$	37,681	$	1,965	$	59,940

	Six Months Ended
	June 30, 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	11,750		24,726		(1,994)		34,482
Loans charged off	(2,809)		(6,208)		(2,699)		(11,716)
Recoveries of loans previously charged off	2,742		181		1,321		4,244
Ending balance	$	143,269	$	76,347	$	43,098	$	262,714
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	2,048		(2,809)		(218)		(979)
Ending balance	$	20,294	$	37,681	$	1,965	$	59,940

An $8.0 million provision for credit losses was necessary for the second quarter of 2024, reflecting continued loan growth and a stable economic outlook.

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at June 30, 2024 is as follows (in thousands):

	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	15,564,975	$	148,523	$	58,434	$	2,214	$	15,623,409	$	150,737
Commercial real estate	5,070,692		96,256		12,883		—		5,083,575		96,256
Loans to individuals	3,827,231		40,833		19,366		—		3,846,597		40,833
Total	$	24,462,898	$	285,612	$	90,683	$	2,214	$	24,553,581	$	287,826

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The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2023 is as follows (in thousands):

	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	14,693,638	$	138,540	$	110,131	$	2,692	$	14,803,769	$	141,232
Commercial real estate	5,330,327		94,718		7,320		—		5,337,647		94,718
Loans to individuals	3,735,534		41,173		28,018		—		3,763,552		41,173
Total	$	23,759,499	$	274,431	$	145,469	$	2,692	$	23,904,968	$	277,123

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.

The probability of default is lowest for pass graded loans and increases for 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.

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The following table summarizes the Company’s loan portfolio at June 30, 2024 by the risk grade categories and vintage (in thousands): 

	Origination Year
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Commercial:
Healthcare
Pass	$	275,268	$	625,281	$	921,843	$	565,653	$	379,669	$	992,889	$	262,814	$	12	$	4,023,429
Special Mention	—		15,000		31,907		1,178		—		49,823		505		—		98,413
Accruing Substandard	—		—		110		18,287		58,103		10,896		975		—		88,371
Nonaccrual	—		1,375		237		—		—		19,233		—		—		20,845
Total healthcare	275,268		641,656		954,097		585,118		437,772		1,072,841		264,294		12		4,231,058
Loans charged off, year-to-date	—		—		—		—		—		6,840		—		—		6,840
Services
Pass	330,400		735,946		506,992		350,009		211,087		691,191		704,785		459		3,530,869
Special Mention	—		1,814		1,035		898		—		8,330		1,758		—		13,835
Accruing Substandard	—		—		17,437		147		1,607		8,929		436		719		29,275
Nonaccrual	—		—		—		1,361		363		—		1,441		—		3,165
Total services	330,400		737,760		525,464		352,415		213,057		708,450		708,420		1,178		3,577,144
Loans charged off, year-to-date	—		—		—		—		10		—		9		—		19
Energy
Pass	55,874		103,305		78,634		2,707		7,288		20,140		3,123,257		—		3,391,205
Special Mention	—		—		—		—		—		—		17,662		—		17,662
Accruing Substandard	—		—		—		—		—		—		13,950		—		13,950
Nonaccrual	—		—		—		—		—		80		28,588		—		28,668
Total energy	55,874		103,305		78,634		2,707		7,288		20,220		3,183,457		—		3,451,485
Loans charged off, year-to-date	—		—		—		—		—		—		—		—		—
General business
Pass	543,566		741,365		376,769		191,698		128,816		346,596		1,918,875		1,733		4,249,418
Special Mention	2,488		15,760		5,201		11,765		535		1,764		9,307		—		46,820
Accruing Substandard	—		4,090		38,900		1,542		1,193		6,539		9,301		163		61,728
Nonaccrual	—		994		66		—		—		35		4,658		3		5,756
Total general business	546,054		762,209		420,936		205,005		130,544		354,934		1,942,141		1,899		4,363,722
Loans charged off, year-to-date	—		27		1,399		—		—		158		2,182		6		3,772
Total commercial	1,207,596		2,244,930		1,979,131		1,145,245		788,661		2,156,445		6,098,312		3,089		15,623,409
Commercial real estate:
Pass	39,377		449,401		2,084,982		919,126		343,462		1,025,082		136,787		—		4,998,217
Special Mention	—		403		14,907		32,131		—		16,949		—		—		64,390
Accruing Substandard	—		—		—		—		—		8,085		—		—		8,085
Nonaccrual	—		2,885		—		—		—		9,998		—		—		12,883
Total commercial real estate	39,377		452,689		2,099,889		951,257		343,462		1,060,114		136,787		—		5,083,575
Loans charged off, year-to-date	—		—		—		—		—		1,455		—		—		1,455

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	Origination Year
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	249,631		377,061		308,510		330,796		332,439		267,548		378,185		21,123		2,265,293
Special Mention	—		42		193		176		—		155		1,575		—		2,141
Accruing Substandard	—		49		—		3		—		—		1,113		—		1,165
Nonaccrual	—		107		433		434		510		8,218		2,377		548		12,627
Total residential mortgage	249,631		377,259		309,136		331,409		332,949		275,921		383,250		21,671		2,281,226
Loans charged off, year-to-date	—		—		—		—		—		5		9		—		14
Residential mortgage guaranteed by U.S. government agencies
Pass	—		893		3,466		2,727		3,982		114,140		—		—		125,208
Nonaccrual	—		—		—		—		280		6,337		—		—		6,617
Total residential mortgage guaranteed by U.S. government agencies	—		893		3,466		2,727		4,262		120,477		—		—		131,825
Personal
Pass	148,880		180,029		187,435		133,383		110,809		171,280		499,184		92		1,431,092
Special Mention	—		28		35		65		15		2		1		—		146
Accruing Substandard	—		30		12		3		7		144		1,990		—		2,186
Nonaccrual	—		26		44		11		9		8		24		—		122
Total personal	148,880		180,113		187,526		133,462		110,840		171,434		501,199		92		1,433,546
Loans charged off, year-to-date1	2,732		51		45		26		—		—		26		20		2,900
Total loans to individuals	398,511		558,265		500,128		467,598		448,051		567,832		884,449		21,763		3,846,597
Total loans	$	1,645,484	$	3,255,884	$	4,579,148	$	2,564,100	$	1,580,174	$	3,784,391	$	7,119,548	$	24,852	$	24,553,581

1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

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The following table summarizes the Company's loan portfolio at December 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:
Healthcare
Pass	650,768		895,602		590,736		409,001		331,897		809,858		281,378		15		3,969,255
Special Mention	—		—		—		21,791		—		31,235		5		—		53,031
Accruing Substandard	—		2,128		18,508		6,911		—		10,896		975		—		39,418
Nonaccrual	—		—		—		30,290		23,129		28,110		—		—		81,529
Total healthcare	650,768		897,730		609,244		467,993		355,026		880,099		282,358		15		4,143,233
Loans charged off, year-to-date	—		—		—		—		2,500		—		—		—		2,500
Services
Pass	900,090		526,776		401,872		228,818		106,112		643,477		730,729		595		3,538,469
Special Mention	—		1,085		1,520		1,341		534		4,522		81		—		9,083
Accruing Substandard	—		13,712		178		326		3,972		3,746		3,108		13		25,055
Nonaccrual	—		—		1,635		338		—		—		1,643		—		3,616
Total services	900,090		541,573		405,205		230,823		110,618		651,745		735,561		608		3,576,223
Loans charged off, year-to-date	—		—		3,060		—		—		—		2,642		—		5,702
Energy
Pass	$	190,122	$	100,006	$	43,769	$	7,876	$	9,562	$	11,583	$	3,025,590	$	—	$	3,388,508
Special Mention	—		—		—		—		—		—		13,950		—		13,950
Accruing Substandard	—		—		—		—		—		—		16,800		—		16,800
Nonaccrual	—		—		—		—		—		99		17,744		—		17,843
Total energy	190,122		100,006		43,769		7,876		9,562		11,682		3,074,084		—		3,437,101
General business
Pass	942,468		436,832		224,735		138,951		101,100		287,744		1,389,128		2,164		3,523,122
Special Mention	10,264		16,167		8,420		1,253		321		8,295		897		—		45,617
Accruing Substandard	4,401		33,194		1,716		27		—		—		31,992		—		71,330
Nonaccrual	—		1,134		—		—		—		48		5,956		5		7,143
Total general business	957,133		487,327		234,871		140,231		101,421		296,087		1,427,973		2,169		3,647,212
Loans charged off, year-to-date	—		—		4,598		2		—		48		10		38		4,696
Total commercial	2,698,113		2,026,636		1,293,089		846,923		576,627		1,839,613		5,519,976		2,792		14,803,769
Commercial real estate:
Pass	396,891		1,941,913		1,194,759		416,647		513,555		705,092		136,095		—		5,304,952
Special Mention	—		476		—		—		—		19,171		—		—		19,647
Accruing Substandard	2,992		—		3		—		—		2,733		—		—		5,728
Nonaccrual	—		—		—		—		7,170		150		—		—		7,320
Total commercial real estate	399,883		1,942,389		1,194,762		416,647		520,725		727,146		136,095		—		5,337,647
Loans charged off, year-to-date	—		—		—		—		—		8,446		—		—		8,446

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	Origination Year
	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	426,089		320,733		342,927		349,742		54,801		243,356		375,739		23,895		2,137,282
Special Mention	157		140		131		1,361		18		134		2,982		93		5,016
Accruing Substandard	—		150		—		—		37		49		50		—		286
Nonaccrual	79		1,419		237		544		344		12,381		2,387		665		18,056
Total residential mortgage	426,325		322,442		343,295		351,647		55,200		255,920		381,158		24,653		2,160,640
Loans charged off, year-to-date	—		—		51		4		—		17		—		1		73
Residential mortgage guaranteed by U.S. government agencies
Pass	633		1,788		2,220		4,297		6,441		124,719		—		—		140,098
Nonaccrual	—		—		—		280		375		9,054		—		—		9,709
Total residential mortgage guaranteed by U.S. government agencies	633		1,788		2,220		4,577		6,816		133,773		—		—		149,807
Personal
Pass	218,401		229,580		149,291		136,215		75,348		137,629		503,841		145		1,450,450
Special Mention	66		39		106		30		8		—		1,918		3		2,170
Accruing Substandard	—		64		12		9		144		—		3		—		232
Nonaccrual	4		51		9		16		3		12		158		—		253
Total personal	218,471		229,734		149,418		136,270		75,503		137,641		505,920		148		1,453,105
Loans charged off, year-to-date1	5,636		82		96		43		—		10		6		26		5,899
Total loans to individuals	645,429		553,964		494,933		492,494		137,519		527,334		887,078		24,801		3,763,552
Total loans	$	3,743,425	$	4,522,989	$	2,982,784	$	1,756,064	$	1,234,871	$	3,094,093	$	6,543,149	$	27,593	$	23,904,968

1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

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Nonaccruing Loans

A summary of nonaccruing loans at June 30, 2024 follows (in thousands): 

	As of June 30, 2024
	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	20,845	$	10,930	$	9,915	$	1,700
Services	3,165		1,521		1,644		441
Energy	28,668		28,668		—		—
General business	5,756		5,618		138		73
Total commercial	58,434		46,737		11,697		2,214
Commercial real estate	12,883		12,883		—		—
Loans to individuals:
Residential mortgage	12,627		12,627		—		—
Residential mortgage guaranteed by U.S. government agencies	6,617		6,617		—		—
Personal	122		122		—		—
Total loans to individuals	19,366		19,366		—		—
Total	$	90,683	$	78,986	$	11,697	$	2,214

A summary of nonaccruing loans at December 31, 2023 follows (in thousands): 

	As of December 31, 2023
	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	81,529	$	40,372	$	41,157	$	1,478
Services	3,616		1,684		1,932		1,214
Energy	17,843		17,843		—		—
General business	7,143		7,143		—		—
Total commercial	110,131		67,042		43,089		2,692
Commercial real estate	7,320		7,320		—		—
Loans to individuals:
Residential mortgage	18,056		18,056		—		—
Residential mortgage guaranteed by U.S. government agencies	9,709		9,709		—		—
Personal	253		253		—		—
Total loans to individuals	28,018		28,018		—		—
Total	$	145,469	$	102,380	$	43,089	$	2,692

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Loan Modifications to Borrowers Experiencing Financial Difficulty

For the six months ended June 30, 2024, the Company had $114 million of loan modifications to borrowers experiencing financial difficulty, including $90 million of healthcare loans and $14 million of energy loans. Modifications generally consist of interest rate reductions, an other than insignificant payment delay, term extension or a combination. Approximately $110 million of the modifications are term extensions of commercial loans, and $4.1 million are combination modifications to residential mortgage loans guaranteed by U.S. government agencies. During the six months ended June 30, 2024, $1.1 million of residential mortgage loans guaranteed by U.S. government agencies that were modified in the previous twelve months defaulted. A payment default is defined as being 30 or more days past due after modification.

For the six months ended June 30, 2023, the Company had $58 million of loan modifications to borrowers experiencing financial difficulty, including $37 million of healthcare loans, $11 million of residential mortgage loans guaranteed by U.S. government agencies and $10 million of general business loans. Approximately $26 million and $11 million of the modifications are combination modifications to healthcare loans and residential mortgage loans guaranteed by U.S. government agencies, respectively. Approximately $20 million of the modifications are term extensions of healthcare and general business loans. During the six months ended June 30, 2023, $4.4 million of residential mortgage loans were modified and subsequently defaulted with $4.3 million of these defaulted loans being guaranteed by U.S. government agencies.

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 June 30, 2024 is as follows (in thousands):

			Past Due								Past Due 90 Days or More and Accruing
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total
Commercial:
Healthcare	$	4,214,505	$	1,375	$	4,415	$	10,763	$	4,231,058	$	—
Services	3,575,551		—		1,158		435		3,577,144		72
Energy	3,451,485		—		—		—		3,451,485		—
General business	4,354,147		1,044		163		8,368		4,363,722		2,794
Total commercial	15,595,688		2,419		5,736		19,566		15,623,409		2,866
Commercial real estate	5,073,416		—		3,021		7,138		5,083,575		—
Loans to individuals:
Residential mortgage	2,267,945		9,907		1,615		1,759		2,281,226		97
Residential mortgage guaranteed by U.S. government agencies	40,693		23,918		15,796		51,418		131,825		46,579
Personal	1,432,561		933		52		—		1,433,546		—
Total loans to individuals	3,741,199		34,758		17,463		53,177		3,846,597		46,676
Total	$	24,410,303	$	37,177	$	26,220	$	79,881	$	24,553,581	$	49,542

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A summary of loans currently performing and past due as of December 31, 2023 is as follows (in thousands):

			Past Due								Past Due 90 Days or More and Accruing
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total
Commercial:
Healthcare	$	4,071,336	$	18,019	$	30,290	$	23,588	$	4,143,233	$	—
Services	3,575,787		2		—		434		3,576,223		—
Energy	3,437,101		—		—		—		3,437,101		—
General business	3,639,775		412		1,157		5,868		3,647,212		—
Total commercial	14,723,999		18,433		31,447		29,890		14,803,769		—
Commercial real estate	5,327,481		2,992		—		7,174		5,337,647		3
Loans to individuals:
Residential mortgage	2,149,927		6,340		1,494		2,879		2,160,640		36
Residential mortgage guaranteed by U.S. government agencies	54,122		25,085		17,053		53,547		149,807		48,201
Personal	1,450,302		2,561		88		154		1,453,105		131
Total loans to individuals	3,654,351		33,986		18,635		56,580		3,763,552		48,368
Total	$	23,705,831	$	55,411	$	50,082	$	93,644	$	23,904,968	$	48,371

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(5) 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):

	June 30, 2024				December 31, 2023
	Unpaid Principal Balance/ Notional		Fair Value		Unpaid Principal Balance/ Notional		Fair Value
Residential mortgage loans held for sale	$	105,922	$	105,706	$	56,922	$	56,457
Residential mortgage loan commitments	62,960		1,945		34,783		1,379
Forward sales contracts	127,010		(186)		75,448		(901)
			$	107,465			$	56,935

No residential mortgage loans held for sale were 90 days or more past due or considered impaired as of June 30, 2024 or December 31, 2023. No credit losses were recognized on residential mortgage loans held for sale for the six month period ended June 30, 2024 and 2023.

Mortgage banking revenue was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Production revenue:
Net realized gains (losses) on sale of mortgage loans	$	2,338	$	(296)	$	4,364	$	(2,027)
Net change in unrealized gain (loss) on mortgage loans held for sale	631		(496)		249		(126)
Net change in the fair value of mortgage loan commitments	(528)		(865)		566		775
Net change in the fair value of forward sales contracts	(72)		1,373		715		461
Total production revenue (loss)	2,369		(284)		5,894		(917)
Servicing revenue	16,259		15,425		31,701		30,425
Total mortgage banking revenue	$	18,628	$	15,141	$	37,595	$	29,508

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.

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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):

	June 30, 2024			December 31, 2023
Number of residential mortgage loans serviced for others	125,698			115,967
Outstanding principal balance of residential mortgage loans serviced for others	$	22,188,347		$	20,382,192
Weighted average interest rate	3.68		%	3.64		%
Remaining term (in months)	278			280

The following represents activity in capitalized mortgage servicing rights (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Beginning Balance	$	319,330	$	299,803	$	293,884	$	277,608
Additions	4,454		4,103		6,970		6,603
Acquisitions	14,021		—		31,421		31,138
Change in fair value due to principal payments	(8,012)		(8,445)		(13,459)		(13,829)
Change in fair value due to market assumption changes	3,453		9,261		14,430		3,202
Ending Balance	$	333,246	$	304,722	$	333,246	$	304,722

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:

	June 30, 2024	December 31, 2023
Discount rate – risk-free rate plus a market premium	9.91%	9.72%
Prepayment rate – based upon loan interest rate, original term and loan type	6.75%	7.34%
Loan servicing costs – annually per loan based upon loan type:
Performing loans	$73 - $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	4.38%	3.90%
Primary/secondary mortgage rate spread	115 bps	105 bps
Delinquency rate	2.48%	2.06%

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 Financial's servicing portfolio.

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(6) Commitments and Contingent Liabilities

Litigation Contingencies

As a member of Visa, BOK Financial is obligated for a proportionate share of certain covered litigation losses incurred by Visa under a retrospective responsibility plan. A contingent liability was recognized for the Company’s share of Visa’s covered litigation liabilities. Visa funded an escrow account to cover litigation claims, including covered litigation losses under the retrospective responsibility plan, with proceeds from its initial public offering in 2008 and from available cash.

On January 23, 2024, Visa, Inc. stockholders approved an exchange offer which provided holders of Class B-1 shares an option to convert up to 50% of its Class B-1 shares to Visa Class C shares and subsequently to freely transferable Visa Class A common shares subject to certain restrictions and holding period requirements (the "Exchange Offer"). The Exchange Offer opened on April 8, 2024 and expired on May 3, 2024. The Company tendered all of its 252,233 Class B-1 Visa shares under the Exchange Offer and received the equivalent of 200,212 shares of Visa common shares and 126,116 Visa B-2 shares in return. Conversion of the Class B-1 shares did not reduce our proportionate share of the covered litigation losses which may dilute our remaining Class B-2 shares if the escrow fund is not adequate to cover final litigation costs.

BOKF, NA is subject to litigation related to its role as Indenture Trustee for multiple municipal bonds to which Christopher Brogdon acted as borrower. The principal amount of the bonds remaining unpaid at this time is $33 million. Mr. Brogdon is obligated to pay the bonds in full by virtue of a Judgment in the USDC of New Jersey which allows the SEC to pursue collection to satisfy the Judgment, which the SEC continues to pursue. The remaining cases are (i) Robert Elliot & Marvin Loeb on behalf of a class of persons purchasing bonds in multiple municipal bond issuances v. BOKF, NA, USDC District of New Jersey, Case No. 2:16-cv-05218-KM-JBC (commenced 11/20/2015); and (ii) Burn Rose, LLC et al v. BOKF, NA d/b/a BOK, Tulsa County District Court Case, No. CJ-2016-03325 (commenced 9/22/2016). In the New Jersey Class Action and the Tulsa County Burn Rose action, the claimants allege that BOKF, NA was complicit in the fraud committed by Mr. Brogdon. BOKF, NA has multiple defenses to the claims, including the defense that it is exculpated by the terms of the various bond indentures. No action has been taken in the class action by the plaintiffs to establish the class and the amount of the damages, if any, cannot be reasonably estimated. Approximately $3 million is claimed as damages in the Burn Rose action. Management is advised that a loss on the claims in both the Class Action and the Burn Rose action is not 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.

At June 30, 2024, the Company has $412 million in interests in various alternative investments generally consisting of unconsolidated limited partnership interests in entities for which investment return is in the form of low income housing tax credits or other investments in merchant banking activities. These investments are recognized in Other assets on the Consolidated Balance Sheets. This investment balance also includes $107 million of unfunded commitments included in Other liabilities on the Consolidated Balance Sheets.

(7) Shareholders' Equity

On July 30, 2024, the Company declared a quarterly cash dividend of $0.55 per common share payable on or about August 30, 2024 to shareholders of record as of August 15, 2024.

Dividends declared were $0.55 and $1.10 per share during the three and six months ended June 30, 2024 and $0.54 and $1.08 per share during the three and six months ended June 30, 2023.

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Accumulated Other Comprehensive Income (Loss)

AOCI includes unrealized gains and losses on 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		Total
Balance, Dec. 31, 2022	$	(664,618)	$	(172,337)	(836,955)
Net change in unrealized gain (loss)	(36,363)		—		(36,363)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	—		32,084		32,084
Loss on available for sale securities, net	3,010		—		3,010
Other comprehensive income (loss), before income taxes	(33,353)		32,084		(1,269)
Federal and state income taxes	(8,839)		7,287		(1,552)
Other comprehensive income (loss), net of income taxes	(24,514)		24,797		283
Balance, June 30, 2023	$	(689,132)	$	(147,540)	$	(836,672)
Balance, Dec. 31, 2023	$	(473,212)	$	(125,888)	$	(599,100)
Net change in unrealized gain (loss)	(77,749)		—		(77,749)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	—		24,210		24,210
Loss on available for sale securities, net	45,137		—		45,137
Other comprehensive income (loss), before income taxes	(32,612)		24,210		(8,402)
Federal and state income taxes	(7,695)		5,695		(2,000)
Other comprehensive income (loss), net of income taxes	(24,917)		18,515		(6,402)
Balance, June 30, 2024	$	(498,129)	$	(107,373)	$	(605,502)

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(8) Earnings Per Share

(In thousands, except share and per share amounts)	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Numerator:
Net income attributable to BOK Financial Corp. shareholders	$	163,713	$	151,308	$	247,416	$	313,676
Less: Earnings allocated to participating securities	1,602		1,202		2,278		2,457
Numerator for basic earnings per share – income available to common shareholders	162,111		150,106		245,138		311,219
Effect of reallocating undistributed earnings of participating securities	—		—		—		—
Numerator for diluted earnings per share – income available to common shareholders	$	162,111	$	150,106	$	245,138	$	311,219
Denominator:
Weighted average shares outstanding	64,343,898		66,521,728		64,578,226		66,684,603
Less: Participating securities included in weighted average shares outstanding	629,694		527,596		576,072		522,555
Denominator for basic earnings per common share	63,714,204		65,994,132		64,002,154		66,162,048
Dilutive effect of employee stock compensation plans	—		—		—		—
Denominator for diluted earnings per common share	63,714,204		65,994,132		64,002,154		66,162,048
Basic earnings per share	$	2.54	$	2.27	$	3.83	$	4.70
Diluted earnings per share	$	2.54	$	2.27	$	3.83	$	4.70

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(9) Reportable Segments

Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2024 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	283,328	$	6,192	$	2,612	$	3,889	$	296,021
Net interest income (expense) from internal sources	(79,593)		58,972		26,889		(6,268)		—
Net interest income	203,735		65,164		29,501		(2,379)		296,021
Net loans charged off and provision for credit losses	6,134		1,247		—		619		8,000
Net interest income after provision for credit losses	197,601		63,917		29,501		(2,998)		288,021
Other operating revenue	54,536		36,252		113,208		55,708		259,704
Other operating expense	76,114		55,128		90,214		115,234		336,690
Net direct contribution	176,023		45,041		52,495		(62,524)		211,035
Gain (loss) on financial instruments, net	168		(3,577)		—		3,409		—
Change in fair value of mortgage servicing rights	—		3,453		—		(3,453)		—
Gain on repossessed assets, net	—		9		—		(9)		—
Corporate expense allocations	17,381		13,392		16,484		(47,257)		—
Net income before taxes	158,810		31,534		36,011		(15,320)		211,035
Federal and state income taxes	39,247		7,417		8,514		(7,875)		47,303
Net income	119,563		24,117		27,497		(7,445)		163,732
Net income attributable to non-controlling interests	—		—		—		19		19
Net income attributable to BOK Financial Corp. shareholders	$	119,563	$	24,117	$	27,497	$	(7,464)	$	163,713
Average assets	$	30,305,613	$	9,630,470	$	16,452,098	$	(5,192,982)	$	51,195,199

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2024 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	566,084	$	13,542	$	9,611	$	356	$	589,593
Net interest income (expense) from internal sources	(158,354)		115,757		48,288		(5,691)		—
Net interest income	407,730		129,299		57,899		(5,335)		589,593
Net loans charged off and provision for credit losses	10,294		3,055		(15)		2,666		16,000
Net interest income after provision for credit losses	397,436		126,244		57,914		(8,001)		573,593
Other operating revenue	104,542		72,459		231,912		12,492		421,405
Other operating expense	146,209		108,575		189,502		232,788		677,074
Net direct contribution	355,769		90,128		100,324		(228,297)		317,924
Gain (loss) on financial instruments, net	335		(13,240)		—		12,905		—
Change in fair value of mortgage servicing rights	—		14,430		—		(14,430)		—
Gain on repossessed assets, net	—		116		—		(116)		—
Corporate expense allocations	35,778		27,564		31,263		(94,605)		—
Net income (loss) before taxes	320,326		63,870		69,061		(135,333)		317,924
Federal and state income taxes	78,966		15,022		16,336		(39,826)		70,498
Net income (loss)	241,360		48,848		52,725		(95,507)		247,426
Net income attributable to non-controlling interests	—		—		—		10		10
Net income attributable to BOK Financial Corp. shareholders	$	241,360	$	48,848	$	52,725	$	(95,517)	$	247,416
Average assets	$	30,056,215	$	9,511,225	$	16,105,713	$	(5,061,768)	$	50,611,385

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Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2023 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	299,712	$	17,828	$	4,415	$	306	$	322,261
Net interest income (expense) from internal sources	(77,975)		50,260		29,426		(1,711)		—
Net interest income	221,737		68,088		33,841		(1,405)		322,261
Net loans charged off and provision for credit losses	6,000		1,129		(45)		9,916		17,000
Net interest income after provision for credit losses	215,737		66,959		33,886		(11,321)		305,261
Other operating revenue	68,828		32,277		123,043		(15,099)		209,049
Other operating expense	77,559		52,340		84,587		104,187		318,673
Net direct contribution	207,006		46,896		72,342		(130,607)		195,637
Gain (loss) on financial instruments, net	231		(10,257)		—		10,026		—
Change in fair value of mortgage servicing rights	—		9,261		—		(9,261)		—
Gain on repossessed assets, net	408		—		—		(408)		—
Corporate expense allocations	21,404		12,318		12,784		(46,506)		—
Net income before taxes	186,241		33,582		59,558		(83,744)		195,637
Federal and state income taxes	45,462		7,898		14,056		(23,415)		44,001
Net income	140,779		25,684		45,502		(60,329)		151,636
Net income attributable to non-controlling interests	—		—		—		328		328
Net income attributable to BOK Financial Corp. shareholders	$	140,779	$	25,684	$	45,502	$	(60,657)	$	151,308
Average assets	$	28,170,869	$	9,597,723	$	12,949,258	$	(2,809,743)	$	47,908,107

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2023 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	587,970	$	38,974	$	25,355	$	22,310	$	674,609
Net interest income (expense) from internal sources	(139,134)		96,324		44,087		(1,277)		—
Net interest income	448,836		135,298		69,442		21,033		674,609
Net loans charged off and provision for credit losses	6,076		2,313		(69)		24,680		33,000
Net interest income after provision for credit losses	442,760		132,985		69,511		(3,647)		641,609
Other operating revenue	125,673		62,887		231,954		(33,600)		386,914
Other operating expense	150,693		102,538		166,342		204,912		624,485
Net direct contribution	417,740		93,334		135,123		(242,159)		404,038
Gain (loss) on financial instruments, net	173		(14,930)		—		14,757		—
Change in fair value of mortgage servicing rights	—		3,202		—		(3,202)		—
Gain on repossessed assets, net	1,267		14		—		(1,281)		—
Corporate expense allocations	39,122		23,940		25,310		(88,372)		—
Net income before taxes	380,058		57,680		109,813		(143,513)		404,038
Federal and state income taxes	92,610		13,566		25,927		(42,197)		89,906
Net income	287,448		44,114		83,886		(101,316)		314,132
Net income attributable to non-controlling interests	—		—		—		456		456
Net income attributable to BOK Financial Corp. shareholders	$	287,448	$	44,114	$	83,886	$	(101,772)	$	313,676
Average assets	$	28,166,923	$	9,765,186	$	12,309,730	$	(3,291,232)	$	46,950,607

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(10) 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 BOKF, NA. 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.

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Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended June 30, 2024 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	27,695	$	—	$	27,695	$	27,695	$	—
Customer hedging revenue	3,408		—		3,047		310		6,765		6,765		—
Retail brokerage revenue	—		—		4,838		—		4,838		—		4,838
Investment banking revenue	4,106		—		9,613		—		13,719		3,942		9,777
Brokerage and trading revenue	7,514		—		45,193		310		53,017		38,402		14,615
TransFund EFT network revenue	21,883		776		(19)		—		22,640		—		22,640
Merchant services revenue	2,502		8		—		—		2,510		—		2,510
Corporate card revenue	1,868		—		161		67		2,096		—		2,096
Transaction card revenue	26,253		784		142		67		27,246		—		27,246
Personal trust revenue	—		—		26,770		—		26,770		—		26,770
Corporate trust revenue	—		—		8,646		—		8,646		—		8,646
Institutional trust & retirement plan services revenue	—		—		16,519		—		16,519		—		16,519
Investment management services and other revenue	—		—		5,641		—		5,641		—		5,641
Fiduciary and asset management revenue	—		—		57,576		—		57,576		—		57,576
Commercial account service charge revenue	15,395		552		603		—		16,550		—		16,550
Overdraft fee revenue	27		5,374		32		—		5,433		—		5,433
Check card revenue	—		6,049		—		—		6,049		—		6,049
Automated service charge and other deposit fee revenue	259		1,189		92		—		1,540		—		1,540
Deposit service charges and fees	15,681		13,164		727		—		29,572		—		29,572
Mortgage production revenue	—		2,369		—		—		2,369		2,369		—
Mortgage servicing revenue	—		16,964		—		(705)		16,259		16,259		—
Mortgage banking revenue	—		19,333		—		(705)		18,628		18,628		—
Other revenue	4,272		2,971		9,570		(2,825)		13,988		8,400		5,588
Total fees and commissions revenue	$	53,720	$	36,252	$	113,208	$	(3,153)	$	200,027	$	65,430	$	134,597

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.

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Fees and commissions revenue by reportable segment and primary service line is as follows for the six months ended June 30, 2024 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	65,152	$	—	$	65,152	$	65,152	$	—
Customer hedging revenue	7,151		—		5,067		872		13,090		13,090		—
Retail brokerage revenue	—		—		9,531		—		9,531		—		9,531
Investment banking revenue	7,925		—		16,498		—		24,423		7,036		17,387
Brokerage and trading revenue	15,076		—		96,248		872		112,196		85,278		26,918
TransFund EFT network revenue	42,349		1,602		(37)		—		43,914		—		43,914
Merchant services revenue	4,682		17		—		—		4,699		—		4,699
Corporate card revenue	3,606		—		340		180		4,126		—		4,126
Transaction card revenue	50,637		1,619		303		180		52,739		—		52,739
Personal trust revenue	—		—		51,115		—		51,115		—		51,115
Corporate trust revenue	—		—		17,906		—		17,906		—		17,906
Institutional trust & retirement plan services revenue	—		—		32,667		—		32,667		—		32,667
Investment management services and other revenue	—		—		11,193		—		11,193		—		11,193
Fiduciary and asset management revenue	—		—		112,881		—		112,881		—		112,881
Commercial account service charge revenue	30,295		1,083		1,149		—		32,527		—		32,527
Overdraft fee revenue	63		10,768		62		—		10,893		—		10,893
Check card revenue	—		11,719		—		—		11,719		—		11,719
Automated service charge and other deposit fee revenue	528		2,425		165		—		3,118		—		3,118
Deposit service charges and fees	30,886		25,995		1,376		—		58,257		—		58,257
Mortgage production revenue	—		5,894		—		—		5,894		5,894		—
Mortgage servicing revenue	—		33,079		—		(1,378)		31,701		31,701		—
Mortgage banking revenue	—		38,973		—		(1,378)		37,595		37,595		—
Other revenue	7,751		5,872		21,104		(7,804)		26,923		16,312		10,611
Total fees and commissions revenue	$	104,350	$	72,459	$	231,912	$	(8,130)	$	400,591	$	139,185	$	261,406

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.

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Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended June 30, 2023 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	36,921	$	—	$	36,921	$	36,921	$	—
Customer hedging revenue	12,839		—		(159)		962		13,642		13,642		—
Retail brokerage revenue	—		—		3,321		—		3,321		—		3,321
Insurance brokerage revenue	—		—		2,857		—		2,857		—		2,857
Investment banking revenue	3,514		—		4,751		—		8,265		3,452		4,813
Brokerage and trading revenue	16,353		—		47,691		962		65,006		54,015		10,991
TransFund EFT network revenue	20,483		907		(17)		2		21,375		—		21,375
Merchant services revenue	2,494		10		—		—		2,504		—		2,504
Corporate card revenue	1,834		—		184		106		2,124		—		2,124
Transaction card revenue	24,811		917		167		108		26,003		—		26,003
Personal trust revenue	—		—		25,315		—		25,315		—		25,315
Corporate trust revenue	—		—		7,201		—		7,201		—		7,201
Institutional trust & retirement plan services revenue	—		—		13,707		—		13,707		—		13,707
Investment management services and other revenue	—		—		6,775		(1)		6,774		—		6,774
Fiduciary and asset management revenue	—		—		52,998		(1)		52,997		—		52,997
Commercial account service charge revenue	13,364		530		488		(2)		14,380		—		14,380
Overdraft fee revenue	32		5,066		42		1		5,141		—		5,141
Check card revenue	—		5,976		—		(1)		5,975		—		5,975
Automated service charge and other deposit fee revenue	267		1,233		103		1		1,604		—		1,604
Deposit service charges and fees	13,663		12,805		633		(1)		27,100		—		27,100
Mortgage production revenue	—		(284)		—		—		(284)		(284)		—
Mortgage servicing revenue	—		15,993		—		(568)		15,425		15,425		—
Mortgage banking revenue	—		15,709		—		(568)		15,141		15,141		—
Other revenue	4,877		2,930		21,561		(15,118)		14,250		8,166		6,084
Total fees and commissions revenue	$	59,704	$	32,361	$	123,050	$	(14,618)	$	200,497	$	77,322	$	123,175

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.

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Fees and commissions revenue by reportable segment and primary service line is as follows for the six months ended June 30, 2023 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	64,519	$	—	$	64,519	$	64,519	$	—
Customer hedging revenue	19,326		—		(59)		2,729		21,996		21,996		—
Retail brokerage revenue	—		—		7,165		—		7,165		—		7,165
Insurance brokerage revenue	—		—		6,163		—		6,163		—		6,163
Investment banking revenue	7,212		—		10,347		—		17,559		7,050		10,509
Brokerage and trading revenue	26,538		—		88,135		2,729		117,402		93,565		23,837
TransFund EFT network revenue	40,982		1,815		(34)		4		42,767		—		42,767
Merchant services revenue	4,644		18		—		—		4,662		—		4,662
Corporate card revenue	3,619		—		361		215		4,195		—		4,195
Transaction card revenue	49,245		1,833		327		219		51,624		—		51,624
Personal trust revenue	—		—		48,842		—		48,842		—		48,842
Corporate trust revenue	—		—		14,861		—		14,861		—		14,861
Institutional trust & retirement plan services revenue	—		—		26,960		—		26,960		—		26,960
Investment management services and other revenue	—		—		13,013		(22)		12,991		—		12,991
Fiduciary and asset management revenue	—		—		103,676		(22)		103,654		—		103,654
Commercial account service charge revenue	26,235		1,029		965		(2)		28,227		—		28,227
Overdraft fee revenue	57		9,894		62		1		10,014		—		10,014
Check card revenue	—		11,614		—		—		11,614		—		11,614
Automated service charge and other deposit fee revenue	504		2,546		162		1		3,213		—		3,213
Deposit service charges and fees	26,796		25,083		1,189		—		53,068		—		53,068
Mortgage production revenue	—		(917)		—		—		(917)		(917)		—
Mortgage servicing revenue	—		31,551		—		(1,126)		30,425		30,425		—
Mortgage banking revenue	—		30,634		—		(1,126)		29,508		29,508		—
Other revenue	12,960		5,392		38,634		(25,766)		31,220		16,727		14,493
Total fees and commissions revenue	$	115,539	$	62,942	$	231,961	$	(23,966)	$	386,476	$	139,800	$	246,676

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.

(11) 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 Company'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.

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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 and six months ended June 30, 2024 and 2023, respectively. Transfers between significant other observable inputs and significant unobservable inputs during the three and six months ended June 30, 2024 and 2023 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 June 30, 2024 or December 31, 2023.

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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 June 30, 2024 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Trading securities:
U.S. government securities	$	71,169	$	69,955	$	1,214	$	—
Residential agency mortgage-backed securities	5,023,892		—		5,023,892		—
Municipal securities	56,780		—		56,780		—
Other trading securities	60,950		—		60,950		—
Total trading securities	5,212,791		69,955		5,142,836		—
Available for sale securities:
U.S. Treasury	923		923		—		—
Municipal securities	278,043		—		278,043		—
Residential agency mortgage-backed securities	8,108,567		—		8,108,567		—
Residential non-agency mortgage-backed securities	828,049		—		828,049		—
Commercial agency mortgage-backed securities	3,577,729		—		3,577,729		—
Other debt securities	473		—		—		473
Total available for sale securities	12,793,784		923		12,792,388		473
Fair value option securities — Residential agency mortgage-backed securities	19,050		—		19,050		—
Residential mortgage loans held for sale1	107,465		—		100,364		7,101
Mortgage servicing rights2	333,246		—		—		333,246
Derivative contracts, net of cash collateral3	225,076		3,699		221,377		—
Liabilities:
Derivative contracts, net of cash collateral3	287,509		658		286,851		—

1Residential 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 79.41% of the unpaid principal balance.

2A 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.

3See 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.

- 86 -

The fair value of financial assets and liabilities measured on a recurring basis was as follows as of December 31, 2023 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Trading securities:
U.S. government securities	$	10,959	$	9,017	$	1,942	$	—
Residential agency mortgage-backed securities	5,105,137		—		5,105,137		—
Municipal securities	37,413		—		37,413		—
Other trading securities	39,996		—		39,996		—
Total trading securities	5,193,505		9,017		5,184,488		—
Available for sale securities:
U.S. Treasury	925		925		—		—
Municipal securities	502,833		—		502,833		—
Residential agency mortgage-backed securities	6,834,720		—		6,834,720		—
Residential non-agency mortgage-backed securities	799,877		—		799,877		—
Commercial agency mortgage-backed securities	4,147,853		—		4,147,853		—
Other debt securities	473		—		—		473
Total available for sale securities	12,286,681		925		12,285,283		473
Fair value option securities — Residential agency mortgage-backed securities	20,671		—		20,671		—
Residential mortgage loans held for sale1	56,935		—		49,749		7,186
Mortgage servicing rights2	293,884		—		—		293,884
Derivative contracts, net of cash collateral3	410,304		—		410,304		—
Liabilities:
Derivative contracts, net of cash collateral3	587,473		2,607		584,866		—

1Residential 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 77.74% of the unpaid principal balance.

2A 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.

3See 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.

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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 Corporate Treasury, 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.

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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 June 30, 2024 for which the fair value was adjusted during the six months ended June 30, 2024 (in thousands):

							Fair Value Adjustments for the
	Carrying Value at June 30, 2024						Three Months Ended June 30, 2024 Recognized in:				Six Months Ended June 30, 2024 Recognized in:
	Quoted Prices in Active Markets for Identical Instruments		Significant Other Observable Inputs		Significant Unobservable Inputs		Gross charge-offs against allowance for loan losses		Other gains (losses), net		Gross charge-offs against allowance for loan losses		Other gains (losses), net
Nonaccruing loans	$	—	$	65	$	10,065	$	6,349	$	—	$	10,033	$	—

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 June 30, 2023 for which the fair value was adjusted during the six months ended June 30, 2023 (in thousands):

							Fair Value Adjustments for the
	Carrying Value at June 30, 2023						Three Months Ended June 30, 2023 Recognized in:				Six Months Ended June 30, 2023 Recognized in:
	Quoted Prices in Active Markets for Identical Instruments		Significant Other Observable Inputs		Significant Unobservable Inputs		Gross charge-offs against allowance for loan losses		Other gains (losses), net		Gross charge-offs against allowance for loan losses		Other gains (losses), net
Nonaccruing loans	$	—	$	—	$	12,048	$	6,797	$	—	$	8,787	$	—
Real estate and other repossessed assets	—		547		—		—		—		—		(101)

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.

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A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2024 follows (dollars in thousands):

	Fair Value		Valuation Technique(s)	Unobservable Input	Range (Weighted Average)
Nonaccruing loans	$	10,065	Discounted cash flows	Management knowledge of industry and non-real estate collateral	4% - 90% (45%)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 June 30, 2023 follows (dollars in thousands):

	Fair Value		Valuation Technique(s)	Unobservable Input	Range (Weighted Average)
Nonaccruing loans	$	12,048	Discounted cash flows	Management knowledge of industry and non-real estate collateral	44% - 62% (58%)1

1    Represents fair value as a percentage of the unpaid principal balance.

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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 June 30, 2024 (in thousands):

	Carrying Value		Estimated Fair Value		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and due from banks	$	897,811	$	897,811	$	897,811	$	—	$	—
Interest-bearing cash and cash equivalents	178,352		178,352		178,352		—		—
Trading securities:
U.S. government securities	71,169		71,169		69,955		1,214		—
Residential agency mortgage-backed securities	5,023,892		5,023,892		—		5,023,892		—
Municipal securities	56,780		56,780		—		56,780		—
Other trading securities	60,950		60,950		—		60,950		—
Total trading securities	5,212,791		5,212,791		69,955		5,142,836		—
Investment securities:
Municipal securities	107,188		109,700		—		11,989		97,711
Residential agency mortgage-backed securities	1,990,626		1,786,096		—		1,786,096		—
Commercial agency mortgage-backed securities	16,066		15,030		—		15,030		—
Other debt securities	15,288		13,706		—		13,706		—
Total investment securities	2,129,168		1,924,532		—		1,826,821		97,711
Allowance for credit losses	(287)		—		—		—		—
Investment securities, net of allowance	2,128,881		1,924,532		—		1,826,821		97,711
Available for sale securities:
U.S. Treasury	923		923		923		—		—
Municipal securities	278,043		278,043		—		278,043		—
Residential agency mortgage-backed securities	8,108,567		8,108,567		—		8,108,567		—
Residential non-agency mortgage-backed securities	828,049		828,049		—		828,049		—
Commercial agency mortgage-backed securities	3,577,729		3,577,729		—		3,577,729		—
Other debt securities	473		473		—		—		473
Total available for sale securities	12,793,784		12,793,784		923		12,792,388		473
Fair value option securities — Residential agency mortgage-backed securities	19,050		19,050		—		19,050		—
Residential mortgage loans held for sale	107,465		107,465		—		100,364		7,101
Loans:
Commercial	15,623,409		15,594,663		—		—		15,594,663
Commercial real estate	5,083,575		4,988,792		—		—		4,988,792
Loans to individuals	3,846,597		3,712,068		—		—		3,712,068
Total loans	24,553,581		24,295,523		—		—		24,295,523
Allowance for loan losses	(287,826)		—		—		—		—
Loans, net of allowance	24,265,755		24,295,523		—		—		24,295,523
Mortgage servicing rights	333,246		333,246		—		—		333,246
Derivative instruments with positive fair value, net of cash collateral	225,076		225,076		3,699		221,377		—
Deposits with no stated maturity	32,777,709		32,777,709		—		32,777,709		—
Time deposits	3,463,935		3,439,777		—		—		3,439,777
Other borrowed funds	7,342,296		7,342,295		—		—		7,342,295
Subordinated debentures	131,156		119,428		—		119,428		—
Derivative instruments with negative fair value, net of cash collateral	287,509		287,509		658		286,851		—

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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, 2023 (in thousands):

	Carrying Value		Estimated Fair Value		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and due from banks	$	947,613	$	947,613	$	947,613	$	—	$	—
Interest-bearing cash and cash equivalents	400,652		400,652		400,652		—		—
Trading securities:
U.S. government securities	10,959		10,959		9,017		1,942		—
Residential agency mortgage-backed securities	5,105,137		5,105,137		—		5,105,137		—
Municipal securities	37,413		37,413		—		37,413		—
Other trading securities	39,996		39,996		—		39,996		—
Total trading securities	5,193,505		5,193,505		9,017		5,184,488		—
Investment securities:
Municipal securities	120,705		125,525		—		12,305		113,220
Residential agency mortgage-backed securities	2,092,083		1,917,810		—		1,917,810		—
Commercial agency mortgage-backed securities	15,914		15,067		—		15,067		—
Other debt securities	15,787		14,184		—		14,184		—
Total investment securities	2,244,489		2,072,586		—		1,959,366		113,220
Allowance for credit losses	(336)		—		—		—		—
Investment securities, net of allowance	2,244,153		2,072,586		—		1,959,366		113,220
Available for sale securities:
U.S. Treasury	925		925		925		—		—
Municipal securities	502,833		502,833		—		502,833		—
Residential agency mortgage-backed securities	6,834,720		6,834,720		—		6,834,720		—
Residential non-agency mortgage-backed securities	799,877		799,877		—		799,877		—
Commercial agency mortgage-backed securities	4,147,853		4,147,853		—		4,147,853		—
Other debt securities	473		473		—		—		473
Total available for sale securities	12,286,681		12,286,681		925		12,285,283		473
Fair value option securities — Residential agency mortgage-backed securities	20,671		20,671		—		20,671		—
Residential mortgage loans held for sale	56,935		56,935		—		49,749		7,186
Loans:
Commercial	14,803,769		14,862,873		—		—		14,862,873
Commercial real estate	5,337,647		5,270,657		—		—		5,270,657
Loans to individuals	3,763,552		3,634,855		—		—		3,634,855
Total loans	23,904,968		23,768,385		—		—		23,768,385
Allowance for loan losses	(277,123)		—		—		—		—
Loans, net of allowance	23,627,845		23,768,385		—		—		23,768,385
Mortgage servicing rights	293,884		293,884		—		—		293,884
Derivative instruments with positive fair value, net of cash collateral	410,304		410,304		—		410,304		—
Deposits with no stated maturity	31,007,679		31,007,679		—		—		31,007,679
Time deposits	3,012,022		2,993,685		—		—		2,993,685
Other borrowed funds	8,824,300		8,824,299		—		—		8,824,299
Subordinated debentures	131,150		115,798		—		115,798		—
Derivative instruments with negative fair value, net of cash collateral	587,473		587,473		2,607		584,866		—

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.

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(12) Subsequent Events

The Company evaluated events from the date of the consolidated financial statements on June 30, 2024 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.

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Six-Month Financial Summary – Unaudited

Consolidated Daily Average Balances, Average Yields and Rates

(In thousands, except per share data)	Six Months Ended
	June 30, 2024						June 30, 2023
	Average Balance		Revenue/ Expense		Yield/ Rate		Average Balance		Revenue/ Expense		Yield/ Rate
Assets
Interest-bearing cash and cash equivalents	$	550,720	$	14,781	5.40	%	$	662,788	$	16,058	4.89	%
Trading securities	5,647,050		143,156		5.09	%	3,656,819		81,955		4.51	%
Investment securities	2,180,560		15,443		1.42	%	2,440,778		17,676		1.45	%
Available for sale securities	12,646,923		237,509		3.59	%	11,886,960		183,961		2.94	%
Fair value option securities	19,625		389		3.63	%	272,769		7,009		5.13	%
Restricted equity securities	432,838		18,050		8.34	%	334,431		12,237		7.32	%
Residential mortgage loans held for sale	69,387		2,271		6.39	%	69,385		2,071		5.82	%
Loans	24,166,860		889,726		7.40	%	22,683,791		770,614		6.85	%
Allowance for loan losses	(280,847)						(245,938)
Loans, net of allowance	23,886,013		889,726		7.49	%	22,437,853		770,614		6.92	%
Total earning assets	45,433,116		1,321,325		5.77	%	41,761,783		1,091,581		5.18	%
Receivable on unsettled securities sales	239,367						170,570
Cash and other assets	4,938,902						5,018,254
Total assets	$	50,611,385					$	46,950,607
Liabilities and equity
Interest-bearing deposits:
Transaction	$	22,635,232	$	418,903	3.72	%	$	18,503,496	$	207,208	2.26	%
Savings	837,870		2,400		0.58	%	942,575		738		0.16	%
Time	3,357,258		75,574		4.53	%	1,778,532		23,994		2.72	%
Total interest-bearing deposits	26,830,360		496,877		3.72	%	21,224,603		231,940		2.20	%
Funds purchased and repurchase agreements	1,548,183		32,208		4.18	%	2,720,397		56,355		4.18	%
Other borrowings	6,997,931		193,733		5.57	%	4,895,893		119,904		4.94	%
Subordinated debentures	131,155		4,618		7.08	%	131,159		4,288		6.59	%
Total interest-bearing liabilities	35,507,629		727,436		4.12	%	28,972,052		412,487		2.87	%
Non-interest bearing demand deposits	8,509,197						11,698,414
Due on unsettled securities purchases	425,568						376,876
Other liabilities	1,016,686						1,010,011
Total equity	5,152,305						4,893,254
Total liabilities and equity	$	50,611,385					$	46,950,607
Tax-equivalent net interest income			$	593,889	1.65	%			$	679,094	2.31	%
Tax-equivalent net interest income to earning assets					2.59	%					3.22	%
Less tax-equivalent adjustment			4,296						4,485
Net interest income			589,593						674,609
Provision for credit losses			16,000						33,000
Other operating revenue			421,405						386,914
Other operating expense			677,074						624,485
Income before taxes			317,924						404,038
Federal and state income taxes			70,498						89,906
Net income			247,426						314,132
Net income attributable to non-controlling interests			10						456
Net income attributable to BOK Financial Corporation shareholders			$	247,416					$	313,676
Earnings Per Average Common Share Equivalent:
Net income:
Basic			$	3.83					$	4.70
Diluted			$	3.83					$	4.70

Yield calculations are shown on a tax equivalent at the statutory federal and state rates for the periods presented. The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also includes average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield / rate calculations are generally based on the conventions that determine how interest income and expense is accrued.

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Quarterly Financial Summary – Unaudited

Consolidated Daily Average Balances, Average Yields and Rates

(In thousands, except per share data)	Three Months Ended
	June 30, 2024						March 31, 2024
	Average Balance		Revenue/ Expense		Yield/ Rate		Average Balance		Revenue/ Expense		Yield/ Rate
Assets
Interest-bearing cash and cash equivalents	$	533,760	$	7,776	5.86	%	$	567,680	$	7,005	4.96	%
Trading securities	5,922,891		74,856		5.06	%	5,371,209		68,300		5.12	%
Investment securities, net of allowance	2,151,079		7,589		1.41	%	2,210,040		7,854		1.42	%
Available for sale securities	12,755,865		123,916		3.71	%	12,537,981		113,593		3.48	%
Fair value option securities	19,170		194		3.68	%	20,080		195		3.59	%
Restricted equity securities	453,303		9,192		8.11	%	412,376		8,858		8.59	%
Residential mortgage loans held for sale	81,371		1,348		6.50	%	57,402		923		6.25	%
Loans	24,385,153		449,142		7.41	%	23,948,567		440,584		7.40	%
Allowance for loan losses	(283,246)						(278,449)
Loans, net of allowance	24,101,907		449,142		7.49	%	23,670,118		440,584		7.48	%
Total earning assets	46,019,346		674,013		5.80	%	44,846,886		647,312		5.73	%
Receivable on unsettled securities sales	171,344						307,389
Cash and other assets	5,004,509						4,873,297
Total assets	$	51,195,199					$	50,027,572
Liabilities and equity
Interest-bearing deposits:
Transaction	$	23,006,204	$	215,122	3.76	%	$	22,264,259	$	203,781	3.68	%
Savings	832,704		1,196		0.58	%	843,037		1,204		0.57	%
Time	3,427,336		38,435		4.51	%	3,287,179		37,139		4.54	%
Total interest-bearing deposits	27,266,244		254,753		3.76	%	26,394,475		242,124		3.69	%
Funds purchased and repurchase agreements	1,838,323		19,544		4.28	%	1,258,044		12,664		4.05	%
Other borrowings	7,151,228		99,193		5.58	%	6,844,633		94,540		5.56	%
Subordinated debentures	131,156		2,306		7.07	%	131,154		2,312		7.09	%
Total interest-bearing liabilities	36,386,951		375,796		4.15	%	34,628,306		351,640		4.08	%
Non-interest bearing demand deposits	8,386,979						8,631,416
Due on unsettled securities purchases	351,199						499,936
Other liabilities	920,427						1,112,947
Total equity	5,149,643						5,154,967
Total liabilities and equity	$	51,195,199					$	50,027,572
Tax-equivalent net interest income			$	298,217	1.65	%			$	295,672	1.65	%
Tax-equivalent net interest income to earning assets					2.56	%					2.61	%
Less tax-equivalent adjustment			2,196						2,100
Net interest income			296,021						293,572
Provision for credit losses			8,000						8,000
Other operating revenue			259,704						161,701
Other operating expense			336,690						340,384
Income before taxes			211,035						106,889
Federal and state income taxes			47,303						23,195
Net income			163,732						83,694
Net income (loss) attributable to non-controlling interests			19						(9)
Net income attributable to BOK Financial Corporation shareholders			$	163,713					$	83,703
Earnings Per Average Common Share Equivalent:
Basic			$	2.54					$	1.29
Diluted			$	2.54					$	1.29

Yield calculations are shown on a tax equivalent at the statutory federal and state rates for the periods presented. The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also includes average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield / rate calculations are generally based on the conventions that determine how interest income and expense is accrued.

- 95 -

(In thousands, except per share data)	Three Months Ended
	December 31, 2023						September 30, 2023
	Average Balance		Revenue /Expense		Yield / Rate		Average Balance		Revenue / Expense		Yield / Rate
Assets
Interest-bearing cash and cash equivalents	$	605,839	$	8,096	5.30	%	$	598,734	$	8,199	5.43	%
Trading securities	5,448,403		69,013		5.05	%	5,444,587		65,301		4.76	%
Investment securities, net of allowance	2,264,194		8,058		1.42	%	2,331,595		8,309		1.43	%
Available for sale securities	12,063,398		105,556		3.27	%	11,925,800		99,238		3.11	%
Fair value option securities	20,086		199		3.57	%	41,741		552		4.61	%
Restricted equity securities	432,780		8,670		8.01	%	445,532		8,776		7.88	%
Residential mortgage loans held for sale	61,146		1,036		6.59	%	77,208		1,234		6.27	%
Loans	23,705,108		439,808		7.36	%	23,414,308		427,649		7.25	%
Allowance for loan losses	(273,717)						(267,205)
Loans, net of allowance	23,431,391		439,808		7.45	%	23,147,103		427,649		7.33	%
Total earning assets	44,327,237		640,436		5.64	%	44,012,300		619,258		5.49	%
Receivable on unsettled securities sales	276,856						268,344
Cash and other assets	5,109,577						5,038,908
Total assets	$	49,713,670					$	49,319,552
Liabilities and equity
Interest-bearing deposits:
Transaction	$	20,449,370	$	177,475	3.44	%	$	19,415,599	$	155,385	3.18	%
Savings	845,705		1,132		0.53	%	874,530		1,043		0.47	%
Time	3,002,252		31,242		4.13	%	2,839,947		28,380		3.96	%
Total interest-bearing deposits	24,297,327		209,849		3.43	%	23,130,076		184,808		3.17	%
Funds purchased and repurchase agreements	2,476,973		29,915		4.79	%	2,699,027		32,748		4.81	%
Other borrowings	7,120,963		99,542		5.55	%	6,968,309		96,271		5.48	%
Subordinated debentures	131,151		2,343		7.09	%	131,151		2,321		7.02	%
Total interest-bearing liabilities	34,026,414		341,649		3.98	%	32,928,563		316,148		3.81	%
Non-interest bearing demand deposits	9,378,886						10,157,821
Due on unsettled securities purchases	363,358						435,927
Other liabilities	1,008,035						891,675
Total equity	4,936,977						4,905,566
Total liabilities and equity	$	49,713,670					$	49,319,552
Tax-equivalent net interest income			$	298,787	1.66	%			$	303,110	1.68	%
Tax-equivalent net interest income to earning assets					2.64	%					2.69	%
Less tax-equivalent adjustment			2,112						2,214
Net interest income			296,675						300,896
Provision for credit losses			6,000						7,000
Other operating revenue			204,883						198,152
Other operating expense			384,083						324,313
Income before taxes			111,475						167,735
Federal and state income taxes			28,953						33,256
Net income			82,522						134,479
Net income (loss) attributable to non-controlling interests			(53)						(16)
Net income attributable to BOK Financial Corporation shareholders			$	82,575					$	134,495
Earnings Per Average Common Share Equivalent:
Basic			$	1.26					$	2.04
Diluted			$	1.26					$	2.04

Yield calculations are shown on a tax equivalent at the statutory federal and state rates for the periods presented. The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also includes average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield / rate calculations are generally based on the conventions that determine how interest income and expense is accrued.

- 96 -

(In thousands, except per share data)	Three Months Ended
	June 30, 2023
	Average Balance		Revenue / Expense		Yield / Rate
Assets
Interest-bearing cash and cash equivalents	$	708,475	$	9,552	5.41	%
Trading securities	4,274,803		47,882		4.50	%
Investment securities, net of allowance	2,408,122		8,659		1.44	%
Available for sale securities	12,033,597		94,849		3.00	%
Fair value option securities	245,469		3,116		5.07	%
Restricted equity securities	351,944		6,429		7.31	%
Residential mortgage loans held for sale	72,959		1,092		5.85	%
Loans	22,889,054		400,988		7.03	%
Allowance for loan losses	(252,890)
Loans, net of allowance	22,636,164		400,988		7.10	%
Total earning assets	42,731,533		572,567		5.29	%
Receivable on unsettled securities sales	163,903
Cash and other assets	5,012,671
Total assets	$	47,908,107
Liabilities and equity
Interest-bearing deposits:
Transaction	$	18,368,592	$	119,272	2.60	%
Savings	926,882		490		0.21	%
Time	2,076,037		16,904		3.27	%
Total interest-bearing deposits	21,371,511		136,666		2.56	%
Funds purchased and repurchase agreements	3,670,994		41,905		4.58	%
Other borrowings	5,275,291		67,316		5.12	%
Subordinated debentures	131,153		2,219		6.79	%
Total interest-bearing liabilities	30,448,949		248,106		3.27	%
Non-interest bearing demand deposits	10,998,201
Due on unsettled securities purchases	436,353
Other liabilities	1,079,692
Total equity	4,944,912
Total liabilities and equity	$	47,908,107
Tax-equivalent net interest income			$	324,461	2.02	%
Tax-equivalent net interest income to earning assets					3.00	%
Less tax-equivalent adjustment			2,200
Net interest income			322,261
Provision for credit losses			17,000
Other operating revenue			209,049
Other operating expense			318,673
Income before taxes			195,637
Federal and state income taxes			44,001
Net income			151,636
Net income attributable to non-controlling interests			328
Net income attributable to BOK Financial Corporation shareholders			$	151,308
Earnings Per Average Common Share Equivalent:
Basic			$	2.27
Diluted			$	2.27

Yield calculations are shown on a tax equivalent at the statutory federal and state rates for the periods presented. The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also includes average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield / rate calculations are generally based on the conventions that determine how interest income and expense is accrued.

- 97 -

Quarterly Earnings Trends – Unaudited

(In thousands, except share and per share data)

	Three Months Ended
	June 30, 2024		Mar. 31, 2024		Dec. 31, 2023		Sep. 30, 2023		June 30, 2023
Interest revenue	$	671,817	$	645,212	$	638,324	$	617,044	$	570,367
Interest expense	375,796		351,640		341,649		316,148		248,106
Net interest income	296,021		293,572		296,675		300,896		322,261
Provision for credit losses	8,000		8,000		6,000		7,000		17,000
Net interest income after provision for credit losses	288,021		285,572		290,675		293,896		305,261
Other operating revenue
Brokerage and trading revenue	53,017		59,179		60,896		62,312		65,006
Transaction card revenue	27,246		25,493		28,847		26,387		26,003
Fiduciary and asset management revenue	57,576		55,305		51,408		52,256		52,997
Deposit service charges and fees	29,572		28,685		27,770		27,676		27,100
Mortgage banking revenue	18,628		18,967		12,834		13,356		15,141
Other revenue	13,988		12,935		15,035		15,865		14,250
Total fees and commissions	200,027		200,564		196,790		197,852		200,497
Other gains, net	57,375		4,269		40,452		1,474		12,618
Gain (loss) on derivatives, net	(1,091)		(8,633)		8,592		(9,010)		(8,159)
Gain (loss) on fair value option securities, net	(94)		(305)		1,031		(203)		(2,158)
Change in fair value of mortgage servicing rights	3,453		10,977		(14,356)		8,039		9,261
Gain (loss) on available for sale securities, net	34		(45,171)		(27,626)		—		(3,010)
Total other operating revenue	259,704		161,701		204,883		198,152		209,049
Other operating expense
Personnel	191,090		202,653		203,022		190,791		190,652
Business promotion	8,250		7,978		8,629		6,958		7,640
Charitable contributions to BOKF Foundation	13,610		—		1,542		23		1,142
Professional fees and services	13,331		12,010		16,288		13,224		12,777
Net occupancy and equipment	30,245		30,293		30,355		32,583		30,105
FDIC and other insurance	7,317		8,740		8,495		7,996		6,974
FDIC special assessment	1,190		6,454		43,773		—		—
Data processing and communications	46,131		45,564		45,584		45,672		45,307
Printing, postage and supplies	3,789		3,997		3,844		3,760		3,728
Amortization of intangible assets	2,898		3,003		3,543		3,474		3,474
Mortgage banking costs	8,532		6,355		8,085		8,357		8,300
Other expense	10,307		13,337		10,923		11,475		8,574
Total other operating expense	336,690		340,384		384,083		324,313		318,673
Net income before taxes	211,035		106,889		111,475		167,735		195,637
Federal and state income taxes	47,303		23,195		28,953		33,256		44,001
Net income	163,732		83,694		82,522		134,479		151,636
Net income (loss) attributable to non-controlling interests	19		(9)		(53)		(16)		328
Net income attributable to BOK Financial Corporation shareholders	$	163,713	$	83,703	$	82,575	$	134,495	$	151,308
Earnings per share:
Basic	$2.54		$1.29		$1.26		$2.04		$2.27
Diluted	$2.54		$1.29		$1.26		$2.04		$2.27
Average shares used in computation:
Basic	63,714,204		64,290,105		64,750,171		65,548,307		65,994,132
Diluted	63,714,204		64,290,105		64,750,171		65,548,307		65,994,132

- 98 -

PART II. Other Information

Item 1. Legal Proceedings

See discussion of legal proceedings at Note 6 to the Consolidated Financial Statements.

Item 1A. Risk Factors

There are no material changes from the risk factors set forth under Part I, Item 1A. "Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2023.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information with respect to purchases made by or on behalf of the Company or any "affiliated purchaser" (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of the Company's common stock during the three months ended June 30, 2024.

Period	Total Number of Shares Purchased2	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs1	Maximum Number of Shares that May Yet Be Purchased Under the Plans
April 1 to April 30, 2024	55,000	$	90.47	55,000	1,900,156
May 1 to May 31, 2024	206,176	$	91.74	206,176	1,693,980
June 1 to June 30, 2024	155,774	$	88.60	151,000	1,542,980
Total	416,950			412,176

1On November 1, 2022, the Company's board of directors authorized the Company to repurchase up to five million shares of the Company's common stock. As of June 30, 2024, the Company had repurchased 3,457,020 shares under this plan. Future repurchases of the Company's common stock will vary based on market conditions, regulatory limitations and other factors.

2The Company may repurchase mature shares from employees to cover the exercise price and taxes in connection with employee equity compensation.

Item 5. Other Information

Trading Plans

No Company director or officer (as defined in Exchange Act Rule 16a-1(f)) has adopted, modified or terminated any trading arrangements during the second quarter of 2024.

Certain of our officers or directors have made elections to participate in, and are participating in, our dividend reinvestment plan and 401(k) plan, and have made, and may from time to time make, elections to have shares withheld to cover withholding taxes on issuances of shares to such officers or directors, which may be designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act or may constitute non-Rule 10b5-1 trading arrangements (as defined in Item 408(c) of Regulation S-K).

- 99 -

Item 6. Exhibits

31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Earnings, (iii) the Consolidated Statements of Changes in Equity, (iv) the Consolidated Statement of Cash Flows and (v) the Notes to Consolidated Financial Statements. The XBRL instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
104	Cover Page Interactive Data File - (formatted as Inline XBRL and contained in Exhibit 101)

Items 3 and 4 are not applicable and have been omitted.

- 100 -

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

BOK FINANCIAL CORPORATION

(Registrant)

Date:        July 31, 2024                                                                  

/s/ Martin E. Grunst

Martin E. Grunst

Executive Vice President and

Chief Financial Officer

/s/ Michael J. Rogers

Michael J. Rogers

Senior Vice President and

Chief Accounting Officer

- 101 -

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

FOR THE CHIEF EXECUTIVE OFFICER

I, Stacy C. Kymes, President and Chief Executive Officer of BOK Financial Corporation (“BOK Financial”), certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of BOK Financial;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  July 31, 2024

/s/ Stacy C. Kymes

Stacy C. Kymes

President

Chief Executive Officer

BOK Financial Corporation

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

SECTION 302

OF THE SARBANES-OXLEY ACT OF 2002

FOR THE CHIEF FINANCIAL OFFICER

I, Martin E. Grunst, Chief Financial Officer of BOK Financial Corporation (“BOK Financial”), certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of BOK Financial;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  July 31, 2024 

/s/ Martin E. Grunst

Martin E. Grunst

Executive Vice President

Chief Financial Officer

BOK Financial Corporation

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of BOK Financial Corporation (“BOK Financial”) on Form 10-Q for the fiscal period ending June 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), we, Stacy C. Kymes and Martin E. Grunst, Chief Executive Officer and Chief Financial Officer, respectively, of BOK Financial, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to our knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of BOK Financial as of, and for, the periods presented.

July 31, 2024

/s/ Stacy C. Kymes

Stacy C. Kymes

President

Chief Executive Officer

BOK Financial Corporation

/s/ Martin E. Grunst

Martin E. Grunst

Executive Vice President

Chief Financial Officer

BOK Financial Corporation

XML

Document And Entity Information	6 Months Ended
	Jun. 30, 2024 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	64,127,824
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Document Type	10-Q
Entity File Number	001-37811
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
City Area Code	918
Local Phone Number	588-6000
Entity Address, Postal Zip Code	74192
Current Fiscal Year End Date	--12-31
Title of 12(b) Security	Common Stock, par value $0.00006 per share
Trading Symbol	BOKF
Security Exchange Name	NASDAQ

XML

Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest revenue [Abstract]
Loans	$ 447,114	$ 399,182	$ 885,791	$ 767,052
Residential mortgage loans held for sale	1,348	1,092	2,271	2,071
Trading securities	74,801	47,821	143,038	81,830
Investment securities	7,564	8,586	15,393	17,514
Available for sale securities	123,828	94,589	237,316	183,325
Fair value option securities	194	3,116	389	7,009
Restricted equity securities	9,192	6,429	18,050	12,237
Interest-bearing cash and cash equivalents	7,776	9,552	14,781	16,058
Total interest revenue	671,817	570,367	1,317,029	1,087,096
Interest expense [Abstract]
Deposits	254,753	136,666	496,877	231,940
Borrowed funds	118,737	109,221	225,941	176,259
Subordinated debentures	2,306	2,219	4,618	4,288
Total interest expense	375,796	248,106	727,436	412,487
Net interest income	296,021	322,261	589,593	674,609
Provision for credit losses	8,000	17,000	16,000	33,000
Net interest income after provision for credit losses	288,021	305,261	573,593	641,609
Total fees and commissions	200,027	200,497	400,591	386,476
Other gains, net	57,375	12,618	61,644	14,869
Loss on derivatives, net	(1,091)	(8,159)	(9,724)	(9,503)
Loss on fair value option securities, net	(94)	(2,158)	(399)	(5,120)
Change in fair value of mortgage servicing rights	3,453	9,261	14,430	3,202
Gain (loss) on available for sale securities, net	34	(3,010)	(45,137)	(3,010)
Total other operating revenue	259,704	209,049	421,405	386,914
Noninterest Expense [Abstract]
Personnel	191,090	190,652	393,743	372,797
Business promotion	8,250	7,640	16,228	16,209
Charitable contributions to BOKF Foundation	13,610	1,142	13,610	1,142
Professional fees and services	13,331	12,777	25,341	25,825
Net occupancy and equipment	30,245	30,105	60,538	58,564
FDIC and other insurance	7,317	6,974	16,057	14,289
FDIC special assessment	1,190	0	7,644	0
Data processing and communications	46,131	45,307	91,695	90,109
Printing, postage and supplies	3,789	3,728	7,786	7,621
Amortization of intangible assets	2,898	3,474	5,901	6,865
Mortgage banking costs	8,532	8,300	14,887	14,082
Other expense	10,307	8,574	23,644	16,982
Total other operating expense	336,690	318,673	677,074	624,485
Net income before taxes	211,035	195,637	317,924	404,038
Federal and state income taxes	47,303	44,001	70,498	89,906
Net income	163,732	151,636	247,426	314,132
Net income attributable to non-controlling interests	19	328	10	456
Net income attributable to BOK Financial Corporation shareholders	$ 163,713	$ 151,308	$ 247,416	$ 313,676
Earnings Per Share [Abstract]
Basic	$ 2.54	$ 2.27	$ 3.83	$ 4.70
Diluted	$ 2.54	$ 2.27	$ 3.83	$ 4.70
Average shares used in computation: [Abstract]
Basic	63,714,204	65,994,132	64,002,154	66,162,048
Diluted	63,714,204	65,994,132	64,002,154	66,162,048
Dividends declared per share	$ 0.55	$ 0.54	$ 1.10	$ 1.08
Brokerage and trading revenue [Member]
Total fees and commissions	$ 53,017	$ 65,006	$ 112,196	$ 117,402
Transaction card revenue [Member]
Total fees and commissions	27,246	26,003	52,739	51,624
Fiduciary and asset management revenue [Member]
Total fees and commissions	57,576	52,997	112,881	103,654
Deposit service charges and fees [Member]
Total fees and commissions	29,572	27,100	58,257	53,068
Mortgage banking revenue [Member]
Total fees and commissions	18,628	15,141	37,595	29,508
Other revenue [Member]
Total fees and commissions	$ 13,988	$ 14,250	$ 26,923	$ 31,220

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 163,732	$ 151,636	$ 247,426	$ 314,132
Other Comprehensive Income (Loss), before Tax [Abstract]
Net change in unrealized gain (loss)	(5,943)	(160,408)	(77,749)	(36,363)
Reclassification Adjustments Included in Earnings [Abstract]
Interest revenue, Investment securities	12,027	16,033	24,210	32,084
Loss (gain) on available for sale securities, net	(34)	3,010	45,137	3,010
Other comprehensive income (loss) before income taxes	6,050	(141,365)	(8,402)	(1,269)
Federal and state income taxes	1,424	(33,247)	(2,000)	(1,552)
Other comprehensive income (loss), net of income taxes	4,626	(108,118)	(6,402)	283
Comprehensive income	168,358	43,518	241,024	314,415
Comprehensive income attributable to non-controlling interests	19	328	10	456
Comprehensive income attributable to BOK Financial Corporation shareholders	$ 168,339	$ 43,190	$ 241,014	$ 313,959

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Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets [Abstract]
Cash and due from banks	$ 897,811	$ 947,613
Interest-bearing cash and cash equivalents	178,352	400,652
Trading securities	5,212,791	5,193,505
Investment securities, net of allowance	2,128,881	2,244,153
Available for sale securities	12,793,784	12,286,681
Fair value option securities	19,050	20,671
Restricted equity securities	475,209	423,099
Residential mortgage loans held for sale	107,465	56,935
Loans	24,553,581	23,904,968
Allowance for loan losses	(287,826)	(277,123)
Loans, net of allowance	24,265,755	23,627,845
Premises and equipment, net	632,388	622,223
Receivables	334,019	317,922
Goodwill	1,044,749	1,044,749
Intangible assets, net	54,028	59,979
Mortgage servicing rights	333,246	293,884
Real estate and other repossessed assets, net of allowance	2,334	2,875
Derivative contracts, net	225,076	410,304
Cash surrender value of bank-owned life insurance	412,278	409,548
Receivable on unsettled securities sales	14,673	391,910
Other assets	1,271,568	1,070,282
Total assets	50,403,457	49,824,830
Deposits [Abstract]
Non-interest bearing demand deposits	8,840,178	9,196,493
Interest-bearing deposits: [Abstract]
Transaction	23,107,042	20,964,101
Savings	830,489	847,085
Time	3,463,935	3,012,022
Total deposits	36,241,644	34,019,701
Funds purchased and repurchase agreements	813,758	1,122,748
Other borrowings	6,528,538	7,701,552
Subordinated debentures	131,156	131,150
Accrued interest, taxes and expense	305,839	338,996
Derivative contracts, net	287,509	587,473
Due on unsettled securities purchases	347,663	254,057
Other liabilities	515,380	523,734
Total liabilities	45,171,487	44,679,411
Shareholders' equity: [Abstract]
Common stock	5	5
Capital surplus	1,416,807	1,406,745
Retained earnings	5,387,949	5,211,512
Treasury stock	(970,129)	(876,720)
Accumulated other comprehensive income (loss)	(605,502)	(599,100)
Total shareholders' equity	5,229,130	5,142,442
Non-controlling interests	2,840	2,977
Total equity	5,231,970	5,145,419
Total liabilities and equity	$ 50,403,457	$ 49,824,830

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Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Investment securities [Abstract]
Investment Securities, Fair Value	$ 1,924,532	$ 2,072,586
Real estate and other repossessed assets, allowance	$ (5,355)	$ (5,355)
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	(76,822,776)	(76,593,292)
Common Stock, Shares, Outstanding	(76,822,776)	(76,593,292)
Treasury stock, shares at cost (in shares)	12,694,952	11,626,115

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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, 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	314,132			313,676			313,676	456
Other comprehensive income (loss)	283					283	283
Repurchase of common stock (in shares)					713
Repurchase of common stock	(67,066)				$ (67,066)		(67,066)
Non-vested shares awarded, net (in shares)		169
Vesting of non-vested shares (in shares)					45
Vesting of non-vested shares	(4,695)				$ (4,695)		(4,695)
Share-based compensation	11,114		11,114				11,114
Cash dividends on common stock	(72,107)			(72,107)			(72,107)
Capital calls and distributions, net	(1,622)							(1,622)
Balance, end of period (in shares) at Jun. 30, 2023		76,592			10,223
Balance, end of period at Jun. 30, 2023	4,867,397	$ 5	1,401,509	5,065,733	$ (766,721)	(836,672)	4,863,854	3,543
Balance, beginning of period (in shares) at Mar. 31, 2023		76,556			9,955
Balance, beginning 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
Net income	151,636			151,308			151,308	328
Other comprehensive income (loss)	(108,118)					(108,118)	(108,118)
Repurchase of common stock (in shares)					266
Repurchase of common stock	(22,590)				$ (22,590)		(22,590)
Non-vested shares awarded, net (in shares)		36
Vesting of non-vested shares (in shares)					2
Vesting of non-vested shares	(194)				$ (194)		(194)
Share-based compensation	4,413		4,413				4,413
Cash dividends on common stock	(35,751)			(35,751)			(35,751)
Capital calls and distributions, net	(26)							(26)
Balance, end of period (in shares) at Jun. 30, 2023		76,592			10,223
Balance, end of period at Jun. 30, 2023	4,867,397	$ 5	1,401,509	5,065,733	$ (766,721)	(836,672)	4,863,854	3,543
Balance, beginning of period (in shares) at Dec. 31, 2023		76,593			11,626
Balance, beginning of period at Dec. 31, 2023	5,145,419	$ 5	1,406,745	5,211,512	$ (876,720)	(599,100)	5,142,442	2,977
Net income	247,426			247,416			247,416	10
Other comprehensive income (loss)	(6,402)					(6,402)	(6,402)
Repurchase of common stock (in shares)					1,029
Repurchase of common stock	(89,779)				$ (89,779)		(89,779)
Non-vested shares awarded, net (in shares)		230
Vesting of non-vested shares (in shares)					40
Vesting of non-vested shares	(3,630)				$ (3,630)		(3,630)
Share-based compensation	10,062		10,062				10,062
Cash dividends on common stock	(70,979)			(70,979)			(70,979)
Capital calls and distributions, net	(147)							(147)
Balance, end of period (in shares) at Jun. 30, 2024		76,823			12,695
Balance, end of period at Jun. 30, 2024	5,231,970	$ 5	1,416,807	5,387,949	$ (970,129)	(605,502)	5,229,130	2,840
Balance, beginning of period (in shares) at Mar. 31, 2024		76,793			12,278
Balance, beginning of period at Mar. 31, 2024	5,131,635	$ 5	1,411,293	5,259,646	$ (932,065)	(610,128)	5,128,751	2,884
Net income	163,732			163,713			163,713	19
Other comprehensive income (loss)	4,626					4,626	4,626
Repurchase of common stock (in shares)					412
Repurchase of common stock	(37,626)				$ (37,626)		(37,626)
Non-vested shares awarded, net (in shares)		30
Vesting of non-vested shares (in shares)					5
Vesting of non-vested shares	(438)				$ (438)		(438)
Share-based compensation	5,514		5,514				5,514
Cash dividends on common stock	(35,410)			(35,410)			(35,410)
Capital calls and distributions, net	(63)							(63)
Balance, end of period (in shares) at Jun. 30, 2024		76,823			12,695
Balance, end of period at Jun. 30, 2024	$ 5,231,970	$ 5	$ 1,416,807	$ 5,387,949	$ (970,129)	$ (605,502)	$ 5,229,130	$ 2,840

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Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash Flows From Operating Activities: [Abstract]
Net income	$ 247,426	$ 314,132
Adjustments to reconcile net income to net cash used in operating activities: [Abstract]
Provision for credit losses	16,000	33,000
Change in fair value of mortgage servicing rights due to market assumption changes	(14,430)	(3,202)
Change in the fair value of mortgage servicing rights due to principal payments	13,459	13,829
Net unrealized (gains) losses from derivative contracts	(108,051)	(25,310)
Share-based compensation	10,062	11,114
Depreciation and amortization	52,076	56,583
Net amortization of discounts and premiums	(20,111)	(8,733)
Net losses (gains) on financial instruments and other losses (gains), net	(16,615)	(11,617)
Net loss (gain) on mortgage loans held for sale	(4,613)	2,153
Mortgage loans originated for sale	(379,214)	(353,409)
Proceeds from sale of mortgage loans held for sale	334,578	332,944
Capitalized mortgage servicing rights	(6,970)	(6,603)
Charitable contributions to BOKF Foundation	13,610	0
Change in trading and fair value option securities	(17,671)	(893,843)
Change in receivables	264,352	(82,491)
Change in other assets	69,808	44,365
Change in other liabilities	189,069	17,318
Net cash provided by (used in) operating activities	642,765	(559,770)
Cash Flows From Investing Activities: [Abstract]
Proceeds from maturities or redemptions of investment securities	113,747	140,043
Proceeds from maturities or redemptions of available for sale securities	940,442	656,703
Purchases of investment securities	0	2,504
Purchases of available for sale securities	(2,244,168)	(1,266,764)
Proceeds from sales of available for sale securities	737,830	135,489
Change in amount receivable on unsettled available for sale securities transactions	95,997	(10,548)
Loans originated, net of principal collected	(651,931)	(678,700)
Net proceeds from derivative asset contracts	15,651	156,205
Net change in restricted equity securities	(52,110)	(30,435)
Proceeds from disposition of assets	12,600	29,136
Purchases of assets	(87,269)	(97,875)
Net cash provided by (used in) investing activities	(1,119,211)	(969,250)
Cash Flows From Financing Activities: [Abstract]
Net change in demand deposits, transaction deposits and savings accounts	1,770,030	(2,430,397)
Net change in time deposits	451,913	1,244,535
Net change in other borrowed funds	(1,490,267)	2,208,867
Net payments on derivative liability contracts	(20,415)	(151,457)
Net change in derivative margin accounts	(188,326)	707,266
Change in amount due on unsettled available for sale securities transactions	(154,203)	139,688
Issuance of common and treasury stock, net	(3,630)	(4,695)
Repurchase of common stock	(89,779)	(67,066)
Dividends paid	(70,979)	(72,107)
Net cash provided by (used in) financing activities	204,344	1,574,634
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect, Total	(272,102)	45,614
Cash and cash equivalents at beginning of period	1,348,265	1,401,716
Cash and cash equivalents at end of period	1,076,163	1,447,330
Supplemental Cash Flow Information: [Abstract]
Cash paid for interest	742,708	401,187
Cash paid for taxes	39,008	123,821
Net loans and bank premises transferred to repossessed real estate and other assets	77	225
Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period	8,263	7,768
Conveyance of other real estate owned guaranteed by U.S. government agencies	1,840	2,569
Right-of-use assets obtained in exchange for operating lease liabilities	$ 18,236	$ 64,899

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Significant Accounting Policies

6 Months Ended

Jun. 30, 2024

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements of BOK Financial 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, BOK Financial Securities, Inc. and BOK Financial Private Wealth, Inc. Operating divisions of BOKF, NA 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 2023 Form 10-K filed with the Securities and Exchange Commission, which contains audited financial statements. Amounts presented as of December 31, 2023 have been derived from the audited financial statements included in BOK Financial's 2023 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 and six-month periods ended June 30, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024.

Newly Adopted and Pending Accounting Policies

Financial Accounting Standards Board

FASB ASU 2023-01, Leases (Topic 842): Common Control Arrangements

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 did not have a material impact on the Company's financial statements.

FASB ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

The FASB issued ASU 2023-07 on November 27, 2023 which is intended to improve reportable segment disclosure requirements. Under previous guidance, while entities were required to disclose segment revenue and measure of profit or loss, there has been limited disclosure around the reporting of segment expenses. In addition to enhanced disclosures about significant segment expenses, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the requirements of the expanded segment disclosures but does not expect the additional disclosures to have a material impact on the reported segment information.

FASB ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures

The FASB issued ASU 2023-09 on December 14, 2023 which amends income tax disclosures to provide information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance requires the entity to disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. The Company is currently assessing the impact ASU 2023-09 will have on its income tax disclosures.

FASB ASU 2024-01, Compensation—Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards

The FASB issued ASU 2024-01 on March 21, 2024 which provides illustrative guidance to help entities determine whether profits interest and similar awards should be accounted for as share-based payment arrangements within the scope of Topic 718, Compensation—Stock Compensation. The ASU is effective for annual periods beginning after December 15, 2024, including interim periods within those periods. Adoption of ASU 2024-01 is not expected to have a material impact on the Company's financial statements.

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Securities

6 Months Ended

Jun. 30, 2024

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):

	June 30, 2024				December 31, 2023
	Fair Value		Net Unrealized Gain (Loss)		Fair Value		Net Unrealized Gain (Loss)
U.S. government securities	$	71,169	$	33	$	10,959	$	28
Residential agency mortgage-backed securities	5,023,892		5,742		5,105,137		98,124
Municipal securities	56,780		152		37,413		323
Other trading securities	60,950		83		39,996		160
Total trading securities	$	5,212,791	$	6,010	$	5,193,505	$	98,635

Investment Securities

The amortized cost and fair values of investment securities are as follows (in thousands):

	June 30, 2024
	Amortized		Carrying		Fair		Gross Unrealized
	Cost		Value1		Value		Gain		Loss
Municipal securities	$	107,188	$	107,188	$	109,700	$	2,976	$	(464)
Mortgage-backed securities:
Residential agency	2,129,826		1,990,626		1,786,096		91		(204,621)
Commercial agency	17,258		16,066		15,030		—		(1,036)
Other debt securities	15,288		15,288		13,706		—		(1,582)
Total investment securities	2,269,560		2,129,168		1,924,532		3,067		(207,703)
Allowance for credit losses	(287)		(287)		—		—		—
Investment securities, net of allowance	$	2,269,273	$	2,128,881	$	1,924,532	$	3,067	$	(207,703)

1    Carrying value includes $140 million of net unrealized loss which remains in 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.

	December 31, 2023
	Amortized		Carrying		Fair		Gross Unrealized
	Cost		Value1		Value		Gain		Loss
Municipal securities	$	120,705	$	120,705	$	125,525	$	5,014	$	(194)
Mortgage-backed securities:
Residential agency	2,255,340		2,092,083		1,917,810		125		(174,398)
Commercial agency	17,258		15,914		15,067		—		(847)
Other debt securities	15,787		15,787		14,184		—		(1,603)
Total investment securities	2,409,090		2,244,489		2,072,586		5,139		(177,042)
Allowance for credit losses	(336)		(336)		—		—		—
Investment securities, net of allowance	$	2,408,754	$	2,244,153	$	2,072,586	$	5,139	$	(177,042)

1    Carrying value includes $165 million of net unrealized loss which remains in 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.

The amortized cost and fair values of investment securities at June 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):

	Less than One Year		One to Five Years		Six to Ten Years		Over Ten Years		Total		Weighted Average Maturity1
Fixed maturity debt securities:
Carrying value	$	18,247	$	101,521	$	18,761	$	13	$	138,542	3.10
Fair value	18,397		102,988		17,038		13		138,436
Residential mortgage-backed securities:
Carrying value									$	1,990,626	2
Fair value									1,786,096
Total investment securities:
Carrying value									$	2,129,168
Fair value									1,924,532

1Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.

2The average expected lives of residential mortgage-backed securities were 4.9 years based upon current prepayment assumptions.

Temporarily Impaired Investment Securities

(dollars in thousands):

	June 30, 2024
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investment:
Municipal securities	25	$	16,795	$	150	$	7,679	$	314	$	24,474	$	464
Mortgage-backed securities:
Residential agency	116	—		—		1,785,118		204,621		1,785,118		204,621
Commercial agency	2	—		—		15,030		1,036		15,030		1,036
Other debt securities	3	—		—		8,693		1,582		8,693		1,582
Total investment securities	146	$	16,795	$	150	$	1,816,520	$	207,553	$	1,833,315	$	207,703

	December 31, 2023
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investment:
Municipal securities	13	$	1,931	$	5	$	6,600	$	189	$	8,531	$	194
Mortgage-backed securities:
Residential agency	116	—		—		1,916,732		174,398		1,916,732		174,398
Commercial agency	2	—		—		15,067		847		15,067		847
Other debt securities	3	—		—		8,672		1,603		8,672		1,603
Total investment securities	134	$	1,931	$	5	$	1,947,071	$	177,037	$	1,949,002	$	177,042

Available for Sale Securities 

The amortized cost and fair value of available for sale securities are as follows (in thousands):

	June 30, 2024
	Amortized		Fair		Gross Unrealized
	Cost		Value		Gain		Loss
U.S. Treasury	$	1,000	$	923	$	—	$	(77)
Municipal securities	301,294		278,043		—		(23,251)
Mortgage-backed securities:
Residential agency	8,401,476		8,108,567		12,321		(305,230)
Residential non-agency	870,162		828,049		10,441		(52,554)
Commercial agency	3,868,588		3,577,729		816		(291,675)
Other debt securities	500		473		—		(27)
Total available for sale securities	$	13,443,020	$	12,793,784	$	23,578	$	(672,814)

	December 31, 2023
	Amortized		Fair		Gross Unrealized
	Cost		Value		Gain		Loss
U.S. Treasury	$	1,000	$	925	$	—	$	(75)
Municipal securities	544,707		502,833		1		(41,875)
Mortgage-backed securities:
Residential agency	7,066,645		6,834,720		36,983		(268,908)
Residential non-agency	833,535		799,877		12,865		(46,523)
Commercial agency	4,456,918		4,147,853		2,972		(312,037)
Other debt securities	500		473		—		(27)
Total available for sale securities	$	12,903,305	$	12,286,681	$	52,821	$	(669,445)

The amortized cost and fair values of available for sale securities at June 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):

	Less than One Year		One to Five Years		Six to Ten Years		Over Ten Years		Total		Weighted Average Maturity1
Fixed maturity debt securities:
Amortized cost	$	415,221	$	2,459,948	$	852,408	$	443,805	$	4,171,382	5.08
Fair value	411,548		2,242,456		780,072		423,092		3,857,168
Residential mortgage-backed securities:
Amortized cost									$	9,271,637	2
Fair value									8,936,615
Total available for sale securities:
Amortized cost									$	13,443,020
Fair value									12,793,784

1Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.

2The average expected lives of residential mortgage-backed securities were 4.3 years based upon current prepayment assumptions.

Sales of available for sale securities resulted in gains and losses as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Proceeds	$	1,836	$	135,489	$	737,830	$	135,489
Gross realized gains	222		703		455		703
Gross realized losses	(188)		(3,713)		(45,592)		(3,713)
Related federal and state income tax expense (benefit)	8		(708)		(10,616)		(708)

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 $12.6 billion at June 30, 2024 and $13.9 billion at December 31, 2023. The secured parties do not have the right to sell or repledge these securities.

Temporarily Impaired Available for Sale Securities

(Dollars in thousands)

	June 30, 2024
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for sale:
U.S. Treasury	1	$	—	$	—	$	923	$	77	$	923	$	77
Municipal securities	130	11,009		58		257,764		23,193		268,773		23,251
Mortgage-backed securities:
Residential agency	793	3,033,904		24,223		3,650,900		281,007		6,684,804		305,230
Residential non-agency	41	166,281		1,108		515,977		51,446		682,258		52,554
Commercial agency	240	183,004		2,009		3,151,499		289,666		3,334,503		291,675
Other debt securities	1	—		—		473		27		473		27
Total available for sale securities	1,206	$	3,394,198	$	27,398	$	7,577,536	$	645,416	$	10,971,734	$	672,814

	December 31, 2023
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for sale:
U.S. Treasury	1	$	—	$	—	$	925	$	75	$	925	$	75
Municipal securities	190	6,799		410		494,955		41,465		501,754		41,875
Mortgage-backed securities:
Residential agency	630	690,118		3,689		3,717,975		265,219		4,408,093		268,908
Residential non-agency	32	116,077		1,244		451,370		45,279		567,447		46,523
Commercial agency	269	392,828		2,626		3,421,757		309,411		3,814,585		312,037
Other debt securities	1	—		—		473		27		473		27
Total available for sale securities	1,123	$	1,205,822	$	7,969	$	8,087,455	$	661,476	$	9,293,277	$	669,445

Based on evaluations of impaired securities as of June 30, 2024, 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):

	June 30, 2024				December 31, 2023
	Fair Value		Net Unrealized Gain (Loss)		Fair Value		Net Unrealized Gain (Loss)
Residential agency mortgage-backed securities	$	19,050	$	(1,805)	$	20,671	$	(1,406)

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Derivatives

6 Months Ended

Jun. 30, 2024

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, interest rates, foreign exchange rates and other commodities 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 in the Consolidated Statements of Earnings.

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 June 30, 2024 (in thousands):

	Assets
	Notional1		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	$	2,964,667	$	109,692	$	(2,691)	$	107,001	$	(103,743)	$	3,258
Energy contracts	7,472,357		631,285		(435,236)		196,049		(38,770)		157,279
Foreign exchange contracts	35,606		35,451		—		35,451		(22)		35,429
Equity option contracts	1,593		158		—		158		(50)		108
Total customer risk management programs	10,474,223		776,586		(437,927)		338,659		(142,585)		196,074
Trading	25,238,831		82,976		(59,454)		23,522		(1,520)		22,002
Internal risk management programs	456,976		7,284		(284)		7,000		—		7,000
Total derivative contracts	$	36,170,030	$	866,846	$	(497,665)	$	369,181	$	(144,105)	$	225,076
	Liabilities
	Notional1		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	$	2,964,667	$	109,685	$	(2,691)	$	106,994	$	—	$	106,994
Energy contracts	7,851,998		619,809		(435,236)		184,573		(54,007)		130,566
Foreign exchange contracts	35,590		35,419		—		35,419		(34)		35,385
Equity option contracts	1,593		158		—		158		—		158
Total customer risk management programs	10,853,848		765,071		(437,927)		327,144		(54,041)		273,103
Trading	24,337,408		83,121		(59,454)		23,667		(10,545)		13,122
Internal risk management programs	79,617		1,568		(284)		1,284		—		1,284
Total derivative contracts	$	35,270,873	$	849,760	$	(497,665)	$	352,095	$	(64,586)	$	287,509

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, 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	$	2,754,476	$	108,450	$	(6,810)	$	101,640	$	(94,608)	$	7,032
Energy contracts	7,846,190		836,425		(399,148)		437,277		(169,141)		268,136
Foreign exchange contracts	54,999		53,863		—		53,863		(872)		52,991
Equity option contracts	3,316		54		—		54		(44)		10
Total customer risk management programs	10,658,981		998,792		(405,958)		592,834		(264,665)		328,169
Trading	16,264,818		118,545		(37,111)		81,434		(6,996)		74,438
Internal risk management programs	425,014		7,697		—		7,697		—		7,697
Total derivative contracts	$	27,348,813	$	1,125,034	$	(443,069)	$	681,965	$	(271,661)	$	410,304
	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	$	2,754,476	$	108,402	$	(6,810)	$	101,592	$	—	$	101,592
Energy contracts	8,254,004		831,467		(399,148)		432,319		(6,441)		425,878
Foreign exchange contracts	54,405		53,065		—		53,065		—		53,065
Equity option contracts	3,316		54		—		54		—		54
Total customer risk management programs	11,066,201		992,988		(405,958)		587,030		(6,441)		580,589
Trading	20,644,156		224,648		(37,111)		187,537		(181,917)		5,620
Internal risk management programs	2,244		1,264		—		1,264		—		1,264
Total derivative contracts	$	31,712,601	$	1,218,900	$	(443,069)	$	775,831	$	(188,358)	$	587,473

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
	June 30, 2024				June 30, 2023
	Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net		Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net
Customer risk management programs:
Interest rate contracts	$	547	$	—	$	2,339	$	—
Energy contracts	6,162		—		11,250		—
Foreign exchange contracts	56		—		53		—
Equity option contracts	—		—		—		—
Total customer risk management programs	6,765		—		13,642		—
Trading1	32,576		—		64,172		—
Internal risk management programs	—		(1,091)		—		(8,159)
Total derivative contracts	$	39,341	$	(1,091)	$	77,814	$	(8,159)

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.

	Six Months Ended
	June 30, 2024				June 30, 2023
	Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net		Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net
Customer risk management programs:
Interest rate contracts	3,007		—		4,109		—
Energy contracts	9,977		—		17,803		—
Foreign exchange contracts	106		—		84		—
Equity option contracts	—		—		—		—
Total customer risk management programs	13,090		—		21,996		—
Trading1	116,282		—		1,079		—
Internal risk management programs	—		(9,724)		—		(9,503)
Total derivative contracts	$	129,372	$	(9,724)	$	23,075	$	(9,503)

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.

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Loans and Allowances for Credit Losses

6 Months Ended

Jun. 30, 2024

Loans and Leases Receivable, Net Amount [Abstract]

Loans [Text Block]

Loans and Allowances for Credit Losses

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 are 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):

	June 30, 2024								December 31, 2023
	Fixed Rate		Variable Rate		Non-accrual		Total		Fixed Rate		Variable Rate		Non-accrual		Total
Commercial	$	3,604,024	$	11,960,951	$	58,434	$	15,623,409	$	3,558,563	$	11,135,075	$	110,131	$	14,803,769
Commercial real estate	756,055		4,314,637		12,883		5,083,575		791,757		4,538,570		7,320		5,337,647
Loans to individuals	2,428,707		1,398,524		19,366		3,846,597		2,282,914		1,452,620		28,018		3,763,552
Total	$	6,788,786	$	17,674,112	$	90,683	$	24,553,581	$	6,633,234	$	17,126,265	$	145,469	$	23,904,968

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 June 30, 2024, outstanding commitments totaled $14.1 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 June 30, 2024, outstanding standby letters of credit totaled $737 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 ongoing 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% 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% of the committed dollars in the portfolio is calculated using charge-off migration.

The expected credit loss on approximately 1% 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
	June 30, 2024
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	146,267	$	97,479	$	37,877	$	281,623
Provision for loan losses	10,441		(1,042)		3,749		13,148
Loans charged off	(6,391)		(205)		(1,344)		(7,940)
Recoveries of loans previously charged off	420		24		551		995
Ending balance	$	150,737	$	96,256	$	40,833	$	287,826
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	17,790	$	27,865	$	1,664	$	47,319
Provision for off-balance sheet credit risk	(474)		(4,551)		42		(4,983)
Ending balance	$	17,316	$	23,314	$	1,706	$	42,336

	Six Months Ended
	June 30, 2024
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	141,232	$	94,718	$	41,173	$	277,123
Provision for loan losses	18,752		2,953		1,403		23,108
Loans charged off	(10,631)		(1,455)		(2,914)		(15,000)
Recoveries of loans previously charged off	1,384		40		1,171		2,595
Ending balance	$	150,737	$	96,256	$	40,833	$	287,826
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	19,762	$	27,439	$	1,776	$	48,977
Provision for off-balance sheet credit risk	(2,446)		(4,125)		(70)		(6,641)
Ending balance	$	17,316	$	23,314	$	1,706	$	42,336

	Three Months Ended
	June 30, 2023
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	139,898	$	66,003	$	43,559	$	249,460
Provision for loan losses	5,420		14,300		237		19,957
Loans charged off	(2,797)		(4,000)		(1,252)		(8,049)
Recoveries of loans previously charged off	748		44		554		1,346
Ending balance	$	143,269	$	76,347	$	43,098	$	262,714
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	20,608	$	40,211	$	2,124	$	62,943
Provision for off-balance sheet credit risk	(314)		(2,530)		(159)		(3,003)
Ending balance	$	20,294	$	37,681	$	1,965	$	59,940

	Six Months Ended
	June 30, 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	11,750		24,726		(1,994)		34,482
Loans charged off	(2,809)		(6,208)		(2,699)		(11,716)
Recoveries of loans previously charged off	2,742		181		1,321		4,244
Ending balance	$	143,269	$	76,347	$	43,098	$	262,714
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	2,048		(2,809)		(218)		(979)
Ending balance	$	20,294	$	37,681	$	1,965	$	59,940

An $8.0 million provision for credit losses was necessary for the second quarter of 2024, reflecting continued loan growth and a stable economic outlook.

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at June 30, 2024 is as follows (in thousands):

	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	15,564,975	$	148,523	$	58,434	$	2,214	$	15,623,409	$	150,737
Commercial real estate	5,070,692		96,256		12,883		—		5,083,575		96,256
Loans to individuals	3,827,231		40,833		19,366		—		3,846,597		40,833
Total	$	24,462,898	$	285,612	$	90,683	$	2,214	$	24,553,581	$	287,826

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2023 is as follows (in thousands):

	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	14,693,638	$	138,540	$	110,131	$	2,692	$	14,803,769	$	141,232
Commercial real estate	5,330,327		94,718		7,320		—		5,337,647		94,718
Loans to individuals	3,735,534		41,173		28,018		—		3,763,552		41,173
Total	$	23,759,499	$	274,431	$	145,469	$	2,692	$	23,904,968	$	277,123

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.

The probability of default is lowest for pass graded loans and increases for 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 June 30, 2024 by the risk grade categories and vintage (in thousands): 

	Origination Year
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Commercial:
Healthcare
Pass	$	275,268	$	625,281	$	921,843	$	565,653	$	379,669	$	992,889	$	262,814	$	12	$	4,023,429
Special Mention	—		15,000		31,907		1,178		—		49,823		505		—		98,413
Accruing Substandard	—		—		110		18,287		58,103		10,896		975		—		88,371
Nonaccrual	—		1,375		237		—		—		19,233		—		—		20,845
Total healthcare	275,268		641,656		954,097		585,118		437,772		1,072,841		264,294		12		4,231,058
Loans charged off, year-to-date	—		—		—		—		—		6,840		—		—		6,840
Services
Pass	330,400		735,946		506,992		350,009		211,087		691,191		704,785		459		3,530,869
Special Mention	—		1,814		1,035		898		—		8,330		1,758		—		13,835
Accruing Substandard	—		—		17,437		147		1,607		8,929		436		719		29,275
Nonaccrual	—		—		—		1,361		363		—		1,441		—		3,165
Total services	330,400		737,760		525,464		352,415		213,057		708,450		708,420		1,178		3,577,144
Loans charged off, year-to-date	—		—		—		—		10		—		9		—		19
Energy
Pass	55,874		103,305		78,634		2,707		7,288		20,140		3,123,257		—		3,391,205
Special Mention	—		—		—		—		—		—		17,662		—		17,662
Accruing Substandard	—		—		—		—		—		—		13,950		—		13,950
Nonaccrual	—		—		—		—		—		80		28,588		—		28,668
Total energy	55,874		103,305		78,634		2,707		7,288		20,220		3,183,457		—		3,451,485
Loans charged off, year-to-date	—		—		—		—		—		—		—		—		—
General business
Pass	543,566		741,365		376,769		191,698		128,816		346,596		1,918,875		1,733		4,249,418
Special Mention	2,488		15,760		5,201		11,765		535		1,764		9,307		—		46,820
Accruing Substandard	—		4,090		38,900		1,542		1,193		6,539		9,301		163		61,728
Nonaccrual	—		994		66		—		—		35		4,658		3		5,756
Total general business	546,054		762,209		420,936		205,005		130,544		354,934		1,942,141		1,899		4,363,722
Loans charged off, year-to-date	—		27		1,399		—		—		158		2,182		6		3,772
Total commercial	1,207,596		2,244,930		1,979,131		1,145,245		788,661		2,156,445		6,098,312		3,089		15,623,409
Commercial real estate:
Pass	39,377		449,401		2,084,982		919,126		343,462		1,025,082		136,787		—		4,998,217
Special Mention	—		403		14,907		32,131		—		16,949		—		—		64,390
Accruing Substandard	—		—		—		—		—		8,085		—		—		8,085
Nonaccrual	—		2,885		—		—		—		9,998		—		—		12,883
Total commercial real estate	39,377		452,689		2,099,889		951,257		343,462		1,060,114		136,787		—		5,083,575
Loans charged off, year-to-date	—		—		—		—		—		1,455		—		—		1,455

	Origination Year
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	249,631		377,061		308,510		330,796		332,439		267,548		378,185		21,123		2,265,293
Special Mention	—		42		193		176		—		155		1,575		—		2,141
Accruing Substandard	—		49		—		3		—		—		1,113		—		1,165
Nonaccrual	—		107		433		434		510		8,218		2,377		548		12,627
Total residential mortgage	249,631		377,259		309,136		331,409		332,949		275,921		383,250		21,671		2,281,226
Loans charged off, year-to-date	—		—		—		—		—		5		9		—		14
Residential mortgage guaranteed by U.S. government agencies
Pass	—		893		3,466		2,727		3,982		114,140		—		—		125,208
Nonaccrual	—		—		—		—		280		6,337		—		—		6,617
Total residential mortgage guaranteed by U.S. government agencies	—		893		3,466		2,727		4,262		120,477		—		—		131,825
Personal
Pass	148,880		180,029		187,435		133,383		110,809		171,280		499,184		92		1,431,092
Special Mention	—		28		35		65		15		2		1		—		146
Accruing Substandard	—		30		12		3		7		144		1,990		—		2,186
Nonaccrual	—		26		44		11		9		8		24		—		122
Total personal	148,880		180,113		187,526		133,462		110,840		171,434		501,199		92		1,433,546
Loans charged off, year-to-date1	2,732		51		45		26		—		—		26		20		2,900
Total loans to individuals	398,511		558,265		500,128		467,598		448,051		567,832		884,449		21,763		3,846,597
Total loans	$	1,645,484	$	3,255,884	$	4,579,148	$	2,564,100	$	1,580,174	$	3,784,391	$	7,119,548	$	24,852	$	24,553,581

1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

The following table summarizes the Company's loan portfolio at December 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:
Healthcare
Pass	650,768		895,602		590,736		409,001		331,897		809,858		281,378		15		3,969,255
Special Mention	—		—		—		21,791		—		31,235		5		—		53,031
Accruing Substandard	—		2,128		18,508		6,911		—		10,896		975		—		39,418
Nonaccrual	—		—		—		30,290		23,129		28,110		—		—		81,529
Total healthcare	650,768		897,730		609,244		467,993		355,026		880,099		282,358		15		4,143,233
Loans charged off, year-to-date	—		—		—		—		2,500		—		—		—		2,500
Services
Pass	900,090		526,776		401,872		228,818		106,112		643,477		730,729		595		3,538,469
Special Mention	—		1,085		1,520		1,341		534		4,522		81		—		9,083
Accruing Substandard	—		13,712		178		326		3,972		3,746		3,108		13		25,055
Nonaccrual	—		—		1,635		338		—		—		1,643		—		3,616
Total services	900,090		541,573		405,205		230,823		110,618		651,745		735,561		608		3,576,223
Loans charged off, year-to-date	—		—		3,060		—		—		—		2,642		—		5,702
Energy
Pass	$	190,122	$	100,006	$	43,769	$	7,876	$	9,562	$	11,583	$	3,025,590	$	—	$	3,388,508
Special Mention	—		—		—		—		—		—		13,950		—		13,950
Accruing Substandard	—		—		—		—		—		—		16,800		—		16,800
Nonaccrual	—		—		—		—		—		99		17,744		—		17,843
Total energy	190,122		100,006		43,769		7,876		9,562		11,682		3,074,084		—		3,437,101
General business
Pass	942,468		436,832		224,735		138,951		101,100		287,744		1,389,128		2,164		3,523,122
Special Mention	10,264		16,167		8,420		1,253		321		8,295		897		—		45,617
Accruing Substandard	4,401		33,194		1,716		27		—		—		31,992		—		71,330
Nonaccrual	—		1,134		—		—		—		48		5,956		5		7,143
Total general business	957,133		487,327		234,871		140,231		101,421		296,087		1,427,973		2,169		3,647,212
Loans charged off, year-to-date	—		—		4,598		2		—		48		10		38		4,696
Total commercial	2,698,113		2,026,636		1,293,089		846,923		576,627		1,839,613		5,519,976		2,792		14,803,769
Commercial real estate:
Pass	396,891		1,941,913		1,194,759		416,647		513,555		705,092		136,095		—		5,304,952
Special Mention	—		476		—		—		—		19,171		—		—		19,647
Accruing Substandard	2,992		—		3		—		—		2,733		—		—		5,728
Nonaccrual	—		—		—		—		7,170		150		—		—		7,320
Total commercial real estate	399,883		1,942,389		1,194,762		416,647		520,725		727,146		136,095		—		5,337,647
Loans charged off, year-to-date	—		—		—		—		—		8,446		—		—		8,446

	Origination Year
	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	426,089		320,733		342,927		349,742		54,801		243,356		375,739		23,895		2,137,282
Special Mention	157		140		131		1,361		18		134		2,982		93		5,016
Accruing Substandard	—		150		—		—		37		49		50		—		286
Nonaccrual	79		1,419		237		544		344		12,381		2,387		665		18,056
Total residential mortgage	426,325		322,442		343,295		351,647		55,200		255,920		381,158		24,653		2,160,640
Loans charged off, year-to-date	—		—		51		4		—		17		—		1		73
Residential mortgage guaranteed by U.S. government agencies
Pass	633		1,788		2,220		4,297		6,441		124,719		—		—		140,098
Nonaccrual	—		—		—		280		375		9,054		—		—		9,709
Total residential mortgage guaranteed by U.S. government agencies	633		1,788		2,220		4,577		6,816		133,773		—		—		149,807
Personal
Pass	218,401		229,580		149,291		136,215		75,348		137,629		503,841		145		1,450,450
Special Mention	66		39		106		30		8		—		1,918		3		2,170
Accruing Substandard	—		64		12		9		144		—		3		—		232
Nonaccrual	4		51		9		16		3		12		158		—		253
Total personal	218,471		229,734		149,418		136,270		75,503		137,641		505,920		148		1,453,105
Loans charged off, year-to-date1	5,636		82		96		43		—		10		6		26		5,899
Total loans to individuals	645,429		553,964		494,933		492,494		137,519		527,334		887,078		24,801		3,763,552
Total loans	$	3,743,425	$	4,522,989	$	2,982,784	$	1,756,064	$	1,234,871	$	3,094,093	$	6,543,149	$	27,593	$	23,904,968

1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

Nonaccruing Loans

A summary of nonaccruing loans at June 30, 2024 follows (in thousands): 

	As of June 30, 2024
	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	20,845	$	10,930	$	9,915	$	1,700
Services	3,165		1,521		1,644		441
Energy	28,668		28,668		—		—
General business	5,756		5,618		138		73
Total commercial	58,434		46,737		11,697		2,214
Commercial real estate	12,883		12,883		—		—
Loans to individuals:
Residential mortgage	12,627		12,627		—		—
Residential mortgage guaranteed by U.S. government agencies	6,617		6,617		—		—
Personal	122		122		—		—
Total loans to individuals	19,366		19,366		—		—
Total	$	90,683	$	78,986	$	11,697	$	2,214

A summary of nonaccruing loans at December 31, 2023 follows (in thousands): 

	As of December 31, 2023
	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	81,529	$	40,372	$	41,157	$	1,478
Services	3,616		1,684		1,932		1,214
Energy	17,843		17,843		—		—
General business	7,143		7,143		—		—
Total commercial	110,131		67,042		43,089		2,692
Commercial real estate	7,320		7,320		—		—
Loans to individuals:
Residential mortgage	18,056		18,056		—		—
Residential mortgage guaranteed by U.S. government agencies	9,709		9,709		—		—
Personal	253		253		—		—
Total loans to individuals	28,018		28,018		—		—
Total	$	145,469	$	102,380	$	43,089	$	2,692

Loan Modifications to Borrowers Experiencing Financial Difficulty

For the six months ended June 30, 2024, the Company had $114 million of loan modifications to borrowers experiencing financial difficulty, including $90 million of healthcare loans and $14 million of energy loans. Modifications generally consist of interest rate reductions, an other than insignificant payment delay, term extension or a combination. Approximately $110 million of the modifications are term extensions of commercial loans, and $4.1 million are combination modifications to residential mortgage loans guaranteed by U.S. government agencies. During the six months ended June 30, 2024, $1.1 million of residential mortgage loans guaranteed by U.S. government agencies that were modified in the previous twelve months defaulted. A payment default is defined as being 30 or more days past due after modification.

For the six months ended June 30, 2023, the Company had $58 million of loan modifications to borrowers experiencing financial difficulty, including $37 million of healthcare loans, $11 million of residential mortgage loans guaranteed by U.S. government agencies and $10 million of general business loans. Approximately $26 million and $11 million of the modifications are combination modifications to healthcare loans and residential mortgage loans guaranteed by U.S. government agencies, respectively. Approximately $20 million of the modifications are term extensions of healthcare and general business loans. During the six months ended June 30, 2023, $4.4 million of residential mortgage loans were modified and subsequently defaulted with $4.3 million of these defaulted loans being guaranteed by U.S. government agencies.

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 June 30, 2024 is as follows (in thousands):

			Past Due								Past Due 90 Days or More and Accruing
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total
Commercial:
Healthcare	$	4,214,505	$	1,375	$	4,415	$	10,763	$	4,231,058	$	—
Services	3,575,551		—		1,158		435		3,577,144		72
Energy	3,451,485		—		—		—		3,451,485		—
General business	4,354,147		1,044		163		8,368		4,363,722		2,794
Total commercial	15,595,688		2,419		5,736		19,566		15,623,409		2,866
Commercial real estate	5,073,416		—		3,021		7,138		5,083,575		—
Loans to individuals:
Residential mortgage	2,267,945		9,907		1,615		1,759		2,281,226		97
Residential mortgage guaranteed by U.S. government agencies	40,693		23,918		15,796		51,418		131,825		46,579
Personal	1,432,561		933		52		—		1,433,546		—
Total loans to individuals	3,741,199		34,758		17,463		53,177		3,846,597		46,676
Total	$	24,410,303	$	37,177	$	26,220	$	79,881	$	24,553,581	$	49,542

A summary of loans currently performing and past due as of December 31, 2023 is as follows (in thousands):

			Past Due								Past Due 90 Days or More and Accruing
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total
Commercial:
Healthcare	$	4,071,336	$	18,019	$	30,290	$	23,588	$	4,143,233	$	—
Services	3,575,787		2		—		434		3,576,223		—
Energy	3,437,101		—		—		—		3,437,101		—
General business	3,639,775		412		1,157		5,868		3,647,212		—
Total commercial	14,723,999		18,433		31,447		29,890		14,803,769		—
Commercial real estate	5,327,481		2,992		—		7,174		5,337,647		3
Loans to individuals:
Residential mortgage	2,149,927		6,340		1,494		2,879		2,160,640		36
Residential mortgage guaranteed by U.S. government agencies	54,122		25,085		17,053		53,547		149,807		48,201
Personal	1,450,302		2,561		88		154		1,453,105		131
Total loans to individuals	3,654,351		33,986		18,635		56,580		3,763,552		48,368
Total	$	23,705,831	$	55,411	$	50,082	$	93,644	$	23,904,968	$	48,371

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Mortgage Banking Activities

6 Months Ended

Jun. 30, 2024

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):

	June 30, 2024				December 31, 2023
	Unpaid Principal Balance/ Notional		Fair Value		Unpaid Principal Balance/ Notional		Fair Value
Residential mortgage loans held for sale	$	105,922	$	105,706	$	56,922	$	56,457
Residential mortgage loan commitments	62,960		1,945		34,783		1,379
Forward sales contracts	127,010		(186)		75,448		(901)
			$	107,465			$	56,935

No residential mortgage loans held for sale were 90 days or more past due or considered impaired as of June 30, 2024 or December 31, 2023. No credit losses were recognized on residential mortgage loans held for sale for the six month period ended June 30, 2024 and 2023.

Mortgage banking revenue was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Production revenue:
Net realized gains (losses) on sale of mortgage loans	$	2,338	$	(296)	$	4,364	$	(2,027)
Net change in unrealized gain (loss) on mortgage loans held for sale	631		(496)		249		(126)
Net change in the fair value of mortgage loan commitments	(528)		(865)		566		775
Net change in the fair value of forward sales contracts	(72)		1,373		715		461
Total production revenue (loss)	2,369		(284)		5,894		(917)
Servicing revenue	16,259		15,425		31,701		30,425
Total mortgage banking revenue	$	18,628	$	15,141	$	37,595	$	29,508

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):

	June 30, 2024			December 31, 2023
Number of residential mortgage loans serviced for others	125,698			115,967
Outstanding principal balance of residential mortgage loans serviced for others	$	22,188,347		$	20,382,192
Weighted average interest rate	3.68		%	3.64		%
Remaining term (in months)	278			280

The following represents activity in capitalized mortgage servicing rights (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Beginning Balance	$	319,330	$	299,803	$	293,884	$	277,608
Additions	4,454		4,103		6,970		6,603
Acquisitions	14,021		—		31,421		31,138
Change in fair value due to principal payments	(8,012)		(8,445)		(13,459)		(13,829)
Change in fair value due to market assumption changes	3,453		9,261		14,430		3,202
Ending Balance	$	333,246	$	304,722	$	333,246	$	304,722

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:

	June 30, 2024	December 31, 2023
Discount rate – risk-free rate plus a market premium	9.91%	9.72%
Prepayment rate – based upon loan interest rate, original term and loan type	6.75%	7.34%
Loan servicing costs – annually per loan based upon loan type:
Performing loans	$73 - $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	4.38%	3.90%
Primary/secondary mortgage rate spread	115 bps	105 bps
Delinquency rate	2.48%	2.06%

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 Financial's servicing portfolio.

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Commitments and Contingent Liabilities

6 Months Ended

Jun. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Commitments and Contingent Liabilities

Litigation Contingencies

As a member of Visa, BOK Financial is obligated for a proportionate share of certain covered litigation losses incurred by Visa under a retrospective responsibility plan. A contingent liability was recognized for the Company’s share of Visa’s covered litigation liabilities. Visa funded an escrow account to cover litigation claims, including covered litigation losses under the retrospective responsibility plan, with proceeds from its initial public offering in 2008 and from available cash.

On January 23, 2024, Visa, Inc. stockholders approved an exchange offer which provided holders of Class B-1 shares an option to convert up to 50% of its Class B-1 shares to Visa Class C shares and subsequently to freely transferable Visa Class A common shares subject to certain restrictions and holding period requirements (the "Exchange Offer"). The Exchange Offer opened on April 8, 2024 and expired on May 3, 2024. The Company tendered all of its 252,233 Class B-1 Visa shares under the Exchange Offer and received the equivalent of 200,212 shares of Visa common shares and 126,116 Visa B-2 shares in return. Conversion of the Class B-1 shares did not reduce our proportionate share of the covered litigation losses which may dilute our remaining Class B-2 shares if the escrow fund is not adequate to cover final litigation costs.

BOKF, NA is subject to litigation related to its role as Indenture Trustee for multiple municipal bonds to which Christopher Brogdon acted as borrower. The principal amount of the bonds remaining unpaid at this time is $33 million. Mr. Brogdon is obligated to pay the bonds in full by virtue of a Judgment in the USDC of New Jersey which allows the SEC to pursue collection to satisfy the Judgment, which the SEC continues to pursue. The remaining cases are (i) Robert Elliot & Marvin Loeb on behalf of a class of persons purchasing bonds in multiple municipal bond issuances v. BOKF, NA, USDC District of New Jersey, Case No. 2:16-cv-05218-KM-JBC (commenced 11/20/2015); and (ii) Burn Rose, LLC et al v. BOKF, NA d/b/a BOK, Tulsa County District Court Case, No. CJ-2016-03325 (commenced 9/22/2016). In the New Jersey Class Action and the Tulsa County Burn Rose action, the claimants allege that BOKF, NA was complicit in the fraud committed by Mr. Brogdon. BOKF, NA has multiple defenses to the claims, including the defense that it is exculpated by the terms of the various bond indentures. No action has been taken in the class action by the plaintiffs to establish the class and the amount of the damages, if any, cannot be reasonably estimated. Approximately $3 million is claimed as damages in the Burn Rose action. Management is advised that a loss on the claims in both the Class Action and the Burn Rose action is not 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.

At June 30, 2024, the Company has $412 million in interests in various alternative investments generally consisting of unconsolidated limited partnership interests in entities for which investment return is in the form of low income housing tax credits or other investments in merchant banking activities. These investments are recognized in Other assets on the Consolidated Balance Sheets. This investment balance also includes $107 million of unfunded commitments included in Other liabilities on the Consolidated Balance Sheets.

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Shareholders' Equity

6 Months Ended

Jun. 30, 2024

Stockholders' Equity Note [Abstract]

Shareholders' Equity [Text Block]

Shareholders' Equity

On July 30, 2024, the Company declared a quarterly cash dividend of $0.55 per common share payable on or about August 30, 2024 to shareholders of record as of August 15, 2024.

Dividends declared were $0.55 and $1.10 per share during the three and six months ended June 30, 2024 and $0.54 and $1.08 per share during the three and six months ended June 30, 2023.

Accumulated Other Comprehensive Income (Loss)

AOCI includes unrealized gains and losses on 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		Total
Balance, Dec. 31, 2022	$	(664,618)	$	(172,337)	(836,955)
Net change in unrealized gain (loss)	(36,363)		—		(36,363)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	—		32,084		32,084
Loss on available for sale securities, net	3,010		—		3,010
Other comprehensive income (loss), before income taxes	(33,353)		32,084		(1,269)
Federal and state income taxes	(8,839)		7,287		(1,552)
Other comprehensive income (loss), net of income taxes	(24,514)		24,797		283
Balance, June 30, 2023	$	(689,132)	$	(147,540)	$	(836,672)
Balance, Dec. 31, 2023	$	(473,212)	$	(125,888)	$	(599,100)
Net change in unrealized gain (loss)	(77,749)		—		(77,749)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	—		24,210		24,210
Loss on available for sale securities, net	45,137		—		45,137
Other comprehensive income (loss), before income taxes	(32,612)		24,210		(8,402)
Federal and state income taxes	(7,695)		5,695		(2,000)
Other comprehensive income (loss), net of income taxes	(24,917)		18,515		(6,402)
Balance, June 30, 2024	$	(498,129)	$	(107,373)	$	(605,502)

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Earnings Per Share

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings Per Share

(In thousands, except share and per share amounts)	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Numerator:
Net income attributable to BOK Financial Corp. shareholders	$	163,713	$	151,308	$	247,416	$	313,676
Less: Earnings allocated to participating securities	1,602		1,202		2,278		2,457
Numerator for basic earnings per share – income available to common shareholders	162,111		150,106		245,138		311,219
Effect of reallocating undistributed earnings of participating securities	—		—		—		—
Numerator for diluted earnings per share – income available to common shareholders	$	162,111	$	150,106	$	245,138	$	311,219
Denominator:
Weighted average shares outstanding	64,343,898		66,521,728		64,578,226		66,684,603
Less: Participating securities included in weighted average shares outstanding	629,694		527,596		576,072		522,555
Denominator for basic earnings per common share	63,714,204		65,994,132		64,002,154		66,162,048
Dilutive effect of employee stock compensation plans	—		—		—		—
Denominator for diluted earnings per common share	63,714,204		65,994,132		64,002,154		66,162,048
Basic earnings per share	$	2.54	$	2.27	$	3.83	$	4.70
Diluted earnings per share	$	2.54	$	2.27	$	3.83	$	4.70

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Reportable Segments

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Reportable Segments [Text Block]

Reportable Segments

Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2024 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	283,328	$	6,192	$	2,612	$	3,889	$	296,021
Net interest income (expense) from internal sources	(79,593)		58,972		26,889		(6,268)		—
Net interest income	203,735		65,164		29,501		(2,379)		296,021
Net loans charged off and provision for credit losses	6,134		1,247		—		619		8,000
Net interest income after provision for credit losses	197,601		63,917		29,501		(2,998)		288,021
Other operating revenue	54,536		36,252		113,208		55,708		259,704
Other operating expense	76,114		55,128		90,214		115,234		336,690
Net direct contribution	176,023		45,041		52,495		(62,524)		211,035
Gain (loss) on financial instruments, net	168		(3,577)		—		3,409		—
Change in fair value of mortgage servicing rights	—		3,453		—		(3,453)		—
Gain on repossessed assets, net	—		9		—		(9)		—
Corporate expense allocations	17,381		13,392		16,484		(47,257)		—
Net income before taxes	158,810		31,534		36,011		(15,320)		211,035
Federal and state income taxes	39,247		7,417		8,514		(7,875)		47,303
Net income	119,563		24,117		27,497		(7,445)		163,732
Net income attributable to non-controlling interests	—		—		—		19		19
Net income attributable to BOK Financial Corp. shareholders	$	119,563	$	24,117	$	27,497	$	(7,464)	$	163,713
Average assets	$	30,305,613	$	9,630,470	$	16,452,098	$	(5,192,982)	$	51,195,199

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2024 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	566,084	$	13,542	$	9,611	$	356	$	589,593
Net interest income (expense) from internal sources	(158,354)		115,757		48,288		(5,691)		—
Net interest income	407,730		129,299		57,899		(5,335)		589,593
Net loans charged off and provision for credit losses	10,294		3,055		(15)		2,666		16,000
Net interest income after provision for credit losses	397,436		126,244		57,914		(8,001)		573,593
Other operating revenue	104,542		72,459		231,912		12,492		421,405
Other operating expense	146,209		108,575		189,502		232,788		677,074
Net direct contribution	355,769		90,128		100,324		(228,297)		317,924
Gain (loss) on financial instruments, net	335		(13,240)		—		12,905		—
Change in fair value of mortgage servicing rights	—		14,430		—		(14,430)		—
Gain on repossessed assets, net	—		116		—		(116)		—
Corporate expense allocations	35,778		27,564		31,263		(94,605)		—
Net income (loss) before taxes	320,326		63,870		69,061		(135,333)		317,924
Federal and state income taxes	78,966		15,022		16,336		(39,826)		70,498
Net income (loss)	241,360		48,848		52,725		(95,507)		247,426
Net income attributable to non-controlling interests	—		—		—		10		10
Net income attributable to BOK Financial Corp. shareholders	$	241,360	$	48,848	$	52,725	$	(95,517)	$	247,416
Average assets	$	30,056,215	$	9,511,225	$	16,105,713	$	(5,061,768)	$	50,611,385

Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2023 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	299,712	$	17,828	$	4,415	$	306	$	322,261
Net interest income (expense) from internal sources	(77,975)		50,260		29,426		(1,711)		—
Net interest income	221,737		68,088		33,841		(1,405)		322,261
Net loans charged off and provision for credit losses	6,000		1,129		(45)		9,916		17,000
Net interest income after provision for credit losses	215,737		66,959		33,886		(11,321)		305,261
Other operating revenue	68,828		32,277		123,043		(15,099)		209,049
Other operating expense	77,559		52,340		84,587		104,187		318,673
Net direct contribution	207,006		46,896		72,342		(130,607)		195,637
Gain (loss) on financial instruments, net	231		(10,257)		—		10,026		—
Change in fair value of mortgage servicing rights	—		9,261		—		(9,261)		—
Gain on repossessed assets, net	408		—		—		(408)		—
Corporate expense allocations	21,404		12,318		12,784		(46,506)		—
Net income before taxes	186,241		33,582		59,558		(83,744)		195,637
Federal and state income taxes	45,462		7,898		14,056		(23,415)		44,001
Net income	140,779		25,684		45,502		(60,329)		151,636
Net income attributable to non-controlling interests	—		—		—		328		328
Net income attributable to BOK Financial Corp. shareholders	$	140,779	$	25,684	$	45,502	$	(60,657)	$	151,308
Average assets	$	28,170,869	$	9,597,723	$	12,949,258	$	(2,809,743)	$	47,908,107

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2023 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	587,970	$	38,974	$	25,355	$	22,310	$	674,609
Net interest income (expense) from internal sources	(139,134)		96,324		44,087		(1,277)		—
Net interest income	448,836		135,298		69,442		21,033		674,609
Net loans charged off and provision for credit losses	6,076		2,313		(69)		24,680		33,000
Net interest income after provision for credit losses	442,760		132,985		69,511		(3,647)		641,609
Other operating revenue	125,673		62,887		231,954		(33,600)		386,914
Other operating expense	150,693		102,538		166,342		204,912		624,485
Net direct contribution	417,740		93,334		135,123		(242,159)		404,038
Gain (loss) on financial instruments, net	173		(14,930)		—		14,757		—
Change in fair value of mortgage servicing rights	—		3,202		—		(3,202)		—
Gain on repossessed assets, net	1,267		14		—		(1,281)		—
Corporate expense allocations	39,122		23,940		25,310		(88,372)		—
Net income before taxes	380,058		57,680		109,813		(143,513)		404,038
Federal and state income taxes	92,610		13,566		25,927		(42,197)		89,906
Net income	287,448		44,114		83,886		(101,316)		314,132
Net income attributable to non-controlling interests	—		—		—		456		456
Net income attributable to BOK Financial Corp. shareholders	$	287,448	$	44,114	$	83,886	$	(101,772)	$	313,676
Average assets	$	28,166,923	$	9,765,186	$	12,309,730	$	(3,291,232)	$	46,950,607

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Fees and Commissions Revenue Fees and Commissions Revenue

6 Months Ended

Jun. 30, 2024

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 BOKF, NA. 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 June 30, 2024 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	27,695	$	—	$	27,695	$	27,695	$	—
Customer hedging revenue	3,408		—		3,047		310		6,765		6,765		—
Retail brokerage revenue	—		—		4,838		—		4,838		—		4,838
Investment banking revenue	4,106		—		9,613		—		13,719		3,942		9,777
Brokerage and trading revenue	7,514		—		45,193		310		53,017		38,402		14,615
TransFund EFT network revenue	21,883		776		(19)		—		22,640		—		22,640
Merchant services revenue	2,502		8		—		—		2,510		—		2,510
Corporate card revenue	1,868		—		161		67		2,096		—		2,096
Transaction card revenue	26,253		784		142		67		27,246		—		27,246
Personal trust revenue	—		—		26,770		—		26,770		—		26,770
Corporate trust revenue	—		—		8,646		—		8,646		—		8,646
Institutional trust & retirement plan services revenue	—		—		16,519		—		16,519		—		16,519
Investment management services and other revenue	—		—		5,641		—		5,641		—		5,641
Fiduciary and asset management revenue	—		—		57,576		—		57,576		—		57,576
Commercial account service charge revenue	15,395		552		603		—		16,550		—		16,550
Overdraft fee revenue	27		5,374		32		—		5,433		—		5,433
Check card revenue	—		6,049		—		—		6,049		—		6,049
Automated service charge and other deposit fee revenue	259		1,189		92		—		1,540		—		1,540
Deposit service charges and fees	15,681		13,164		727		—		29,572		—		29,572
Mortgage production revenue	—		2,369		—		—		2,369		2,369		—
Mortgage servicing revenue	—		16,964		—		(705)		16,259		16,259		—
Mortgage banking revenue	—		19,333		—		(705)		18,628		18,628		—
Other revenue	4,272		2,971		9,570		(2,825)		13,988		8,400		5,588
Total fees and commissions revenue	$	53,720	$	36,252	$	113,208	$	(3,153)	$	200,027	$	65,430	$	134,597

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 six months ended June 30, 2024 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	65,152	$	—	$	65,152	$	65,152	$	—
Customer hedging revenue	7,151		—		5,067		872		13,090		13,090		—
Retail brokerage revenue	—		—		9,531		—		9,531		—		9,531
Investment banking revenue	7,925		—		16,498		—		24,423		7,036		17,387
Brokerage and trading revenue	15,076		—		96,248		872		112,196		85,278		26,918
TransFund EFT network revenue	42,349		1,602		(37)		—		43,914		—		43,914
Merchant services revenue	4,682		17		—		—		4,699		—		4,699
Corporate card revenue	3,606		—		340		180		4,126		—		4,126
Transaction card revenue	50,637		1,619		303		180		52,739		—		52,739
Personal trust revenue	—		—		51,115		—		51,115		—		51,115
Corporate trust revenue	—		—		17,906		—		17,906		—		17,906
Institutional trust & retirement plan services revenue	—		—		32,667		—		32,667		—		32,667
Investment management services and other revenue	—		—		11,193		—		11,193		—		11,193
Fiduciary and asset management revenue	—		—		112,881		—		112,881		—		112,881
Commercial account service charge revenue	30,295		1,083		1,149		—		32,527		—		32,527
Overdraft fee revenue	63		10,768		62		—		10,893		—		10,893
Check card revenue	—		11,719		—		—		11,719		—		11,719
Automated service charge and other deposit fee revenue	528		2,425		165		—		3,118		—		3,118
Deposit service charges and fees	30,886		25,995		1,376		—		58,257		—		58,257
Mortgage production revenue	—		5,894		—		—		5,894		5,894		—
Mortgage servicing revenue	—		33,079		—		(1,378)		31,701		31,701		—
Mortgage banking revenue	—		38,973		—		(1,378)		37,595		37,595		—
Other revenue	7,751		5,872		21,104		(7,804)		26,923		16,312		10,611
Total fees and commissions revenue	$	104,350	$	72,459	$	231,912	$	(8,130)	$	400,591	$	139,185	$	261,406

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 June 30, 2023 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	36,921	$	—	$	36,921	$	36,921	$	—
Customer hedging revenue	12,839		—		(159)		962		13,642		13,642		—
Retail brokerage revenue	—		—		3,321		—		3,321		—		3,321
Insurance brokerage revenue	—		—		2,857		—		2,857		—		2,857
Investment banking revenue	3,514		—		4,751		—		8,265		3,452		4,813
Brokerage and trading revenue	16,353		—		47,691		962		65,006		54,015		10,991
TransFund EFT network revenue	20,483		907		(17)		2		21,375		—		21,375
Merchant services revenue	2,494		10		—		—		2,504		—		2,504
Corporate card revenue	1,834		—		184		106		2,124		—		2,124
Transaction card revenue	24,811		917		167		108		26,003		—		26,003
Personal trust revenue	—		—		25,315		—		25,315		—		25,315
Corporate trust revenue	—		—		7,201		—		7,201		—		7,201
Institutional trust & retirement plan services revenue	—		—		13,707		—		13,707		—		13,707
Investment management services and other revenue	—		—		6,775		(1)		6,774		—		6,774
Fiduciary and asset management revenue	—		—		52,998		(1)		52,997		—		52,997
Commercial account service charge revenue	13,364		530		488		(2)		14,380		—		14,380
Overdraft fee revenue	32		5,066		42		1		5,141		—		5,141
Check card revenue	—		5,976		—		(1)		5,975		—		5,975
Automated service charge and other deposit fee revenue	267		1,233		103		1		1,604		—		1,604
Deposit service charges and fees	13,663		12,805		633		(1)		27,100		—		27,100
Mortgage production revenue	—		(284)		—		—		(284)		(284)		—
Mortgage servicing revenue	—		15,993		—		(568)		15,425		15,425		—
Mortgage banking revenue	—		15,709		—		(568)		15,141		15,141		—
Other revenue	4,877		2,930		21,561		(15,118)		14,250		8,166		6,084
Total fees and commissions revenue	$	59,704	$	32,361	$	123,050	$	(14,618)	$	200,497	$	77,322	$	123,175

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 six months ended June 30, 2023 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	64,519	$	—	$	64,519	$	64,519	$	—
Customer hedging revenue	19,326		—		(59)		2,729		21,996		21,996		—
Retail brokerage revenue	—		—		7,165		—		7,165		—		7,165
Insurance brokerage revenue	—		—		6,163		—		6,163		—		6,163
Investment banking revenue	7,212		—		10,347		—		17,559		7,050		10,509
Brokerage and trading revenue	26,538		—		88,135		2,729		117,402		93,565		23,837
TransFund EFT network revenue	40,982		1,815		(34)		4		42,767		—		42,767
Merchant services revenue	4,644		18		—		—		4,662		—		4,662
Corporate card revenue	3,619		—		361		215		4,195		—		4,195
Transaction card revenue	49,245		1,833		327		219		51,624		—		51,624
Personal trust revenue	—		—		48,842		—		48,842		—		48,842
Corporate trust revenue	—		—		14,861		—		14,861		—		14,861
Institutional trust & retirement plan services revenue	—		—		26,960		—		26,960		—		26,960
Investment management services and other revenue	—		—		13,013		(22)		12,991		—		12,991
Fiduciary and asset management revenue	—		—		103,676		(22)		103,654		—		103,654
Commercial account service charge revenue	26,235		1,029		965		(2)		28,227		—		28,227
Overdraft fee revenue	57		9,894		62		1		10,014		—		10,014
Check card revenue	—		11,614		—		—		11,614		—		11,614
Automated service charge and other deposit fee revenue	504		2,546		162		1		3,213		—		3,213
Deposit service charges and fees	26,796		25,083		1,189		—		53,068		—		53,068
Mortgage production revenue	—		(917)		—		—		(917)		(917)		—
Mortgage servicing revenue	—		31,551		—		(1,126)		30,425		30,425		—
Mortgage banking revenue	—		30,634		—		(1,126)		29,508		29,508		—
Other revenue	12,960		5,392		38,634		(25,766)		31,220		16,727		14,493
Total fees and commissions revenue	$	115,539	$	62,942	$	231,961	$	(23,966)	$	386,476	$	139,800	$	246,676

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Fair Value Measurements

6 Months Ended

Jun. 30, 2024

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 Company'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 and six months ended June 30, 2024 and 2023, respectively. Transfers between significant other observable inputs and significant unobservable inputs during the three and six months ended June 30, 2024 and 2023 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 June 30, 2024 or December 31, 2023.

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 June 30, 2024 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Trading securities:
U.S. government securities	$	71,169	$	69,955	$	1,214	$	—
Residential agency mortgage-backed securities	5,023,892		—		5,023,892		—
Municipal securities	56,780		—		56,780		—
Other trading securities	60,950		—		60,950		—
Total trading securities	5,212,791		69,955		5,142,836		—
Available for sale securities:
U.S. Treasury	923		923		—		—
Municipal securities	278,043		—		278,043		—
Residential agency mortgage-backed securities	8,108,567		—		8,108,567		—
Residential non-agency mortgage-backed securities	828,049		—		828,049		—
Commercial agency mortgage-backed securities	3,577,729		—		3,577,729		—
Other debt securities	473		—		—		473
Total available for sale securities	12,793,784		923		12,792,388		473
Fair value option securities — Residential agency mortgage-backed securities	19,050		—		19,050		—
Residential mortgage loans held for sale1	107,465		—		100,364		7,101
Mortgage servicing rights2	333,246		—		—		333,246
Derivative contracts, net of cash collateral3	225,076		3,699		221,377		—
Liabilities:
Derivative contracts, net of cash collateral3	287,509		658		286,851		—

1Residential 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 79.41% of the unpaid principal balance.

2A 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.

3See 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, 2023 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Trading securities:
U.S. government securities	$	10,959	$	9,017	$	1,942	$	—
Residential agency mortgage-backed securities	5,105,137		—		5,105,137		—
Municipal securities	37,413		—		37,413		—
Other trading securities	39,996		—		39,996		—
Total trading securities	5,193,505		9,017		5,184,488		—
Available for sale securities:
U.S. Treasury	925		925		—		—
Municipal securities	502,833		—		502,833		—
Residential agency mortgage-backed securities	6,834,720		—		6,834,720		—
Residential non-agency mortgage-backed securities	799,877		—		799,877		—
Commercial agency mortgage-backed securities	4,147,853		—		4,147,853		—
Other debt securities	473		—		—		473
Total available for sale securities	12,286,681		925		12,285,283		473
Fair value option securities — Residential agency mortgage-backed securities	20,671		—		20,671		—
Residential mortgage loans held for sale1	56,935		—		49,749		7,186
Mortgage servicing rights2	293,884		—		—		293,884
Derivative contracts, net of cash collateral3	410,304		—		410,304		—
Liabilities:
Derivative contracts, net of cash collateral3	587,473		2,607		584,866		—

1Residential 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 77.74% of the unpaid principal balance.

2A 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.

3See 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 Corporate Treasury, 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 June 30, 2024 for which the fair value was adjusted during the six months ended June 30, 2024 (in thousands):

							Fair Value Adjustments for the
	Carrying Value at June 30, 2024						Three Months Ended June 30, 2024 Recognized in:				Six Months Ended June 30, 2024 Recognized in:
	Quoted Prices in Active Markets for Identical Instruments		Significant Other Observable Inputs		Significant Unobservable Inputs		Gross charge-offs against allowance for loan losses		Other gains (losses), net		Gross charge-offs against allowance for loan losses		Other gains (losses), net
Nonaccruing loans	$	—	$	65	$	10,065	$	6,349	$	—	$	10,033	$	—

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 June 30, 2023 for which the fair value was adjusted during the six months ended June 30, 2023 (in thousands):

							Fair Value Adjustments for the
	Carrying Value at June 30, 2023						Three Months Ended June 30, 2023 Recognized in:				Six Months Ended June 30, 2023 Recognized in:
	Quoted Prices in Active Markets for Identical Instruments		Significant Other Observable Inputs		Significant Unobservable Inputs		Gross charge-offs against allowance for loan losses		Other gains (losses), net		Gross charge-offs against allowance for loan losses		Other gains (losses), net
Nonaccruing loans	$	—	$	—	$	12,048	$	6,797	$	—	$	8,787	$	—
Real estate and other repossessed assets	—		547		—		—		—		—		(101)

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 June 30, 2024 follows (dollars in thousands):

	Fair Value		Valuation Technique(s)	Unobservable Input	Range (Weighted Average)
Nonaccruing loans	$	10,065	Discounted cash flows	Management knowledge of industry and non-real estate collateral	4% - 90% (45%)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 June 30, 2023 follows (dollars in thousands):

	Fair Value		Valuation Technique(s)	Unobservable Input	Range (Weighted Average)
Nonaccruing loans	$	12,048	Discounted cash flows	Management knowledge of industry and non-real estate collateral	44% - 62% (58%)1

1    Represents fair value as a percentage of the unpaid principal balance.

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 June 30, 2024 (in thousands):

	Carrying Value		Estimated Fair Value		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and due from banks	$	897,811	$	897,811	$	897,811	$	—	$	—
Interest-bearing cash and cash equivalents	178,352		178,352		178,352		—		—
Trading securities:
U.S. government securities	71,169		71,169		69,955		1,214		—
Residential agency mortgage-backed securities	5,023,892		5,023,892		—		5,023,892		—
Municipal securities	56,780		56,780		—		56,780		—
Other trading securities	60,950		60,950		—		60,950		—
Total trading securities	5,212,791		5,212,791		69,955		5,142,836		—
Investment securities:
Municipal securities	107,188		109,700		—		11,989		97,711
Residential agency mortgage-backed securities	1,990,626		1,786,096		—		1,786,096		—
Commercial agency mortgage-backed securities	16,066		15,030		—		15,030		—
Other debt securities	15,288		13,706		—		13,706		—
Total investment securities	2,129,168		1,924,532		—		1,826,821		97,711
Allowance for credit losses	(287)		—		—		—		—
Investment securities, net of allowance	2,128,881		1,924,532		—		1,826,821		97,711
Available for sale securities:
U.S. Treasury	923		923		923		—		—
Municipal securities	278,043		278,043		—		278,043		—
Residential agency mortgage-backed securities	8,108,567		8,108,567		—		8,108,567		—
Residential non-agency mortgage-backed securities	828,049		828,049		—		828,049		—
Commercial agency mortgage-backed securities	3,577,729		3,577,729		—		3,577,729		—
Other debt securities	473		473		—		—		473
Total available for sale securities	12,793,784		12,793,784		923		12,792,388		473
Fair value option securities — Residential agency mortgage-backed securities	19,050		19,050		—		19,050		—
Residential mortgage loans held for sale	107,465		107,465		—		100,364		7,101
Loans:
Commercial	15,623,409		15,594,663		—		—		15,594,663
Commercial real estate	5,083,575		4,988,792		—		—		4,988,792
Loans to individuals	3,846,597		3,712,068		—		—		3,712,068
Total loans	24,553,581		24,295,523		—		—		24,295,523
Allowance for loan losses	(287,826)		—		—		—		—
Loans, net of allowance	24,265,755		24,295,523		—		—		24,295,523
Mortgage servicing rights	333,246		333,246		—		—		333,246
Derivative instruments with positive fair value, net of cash collateral	225,076		225,076		3,699		221,377		—
Deposits with no stated maturity	32,777,709		32,777,709		—		32,777,709		—
Time deposits	3,463,935		3,439,777		—		—		3,439,777
Other borrowed funds	7,342,296		7,342,295		—		—		7,342,295
Subordinated debentures	131,156		119,428		—		119,428		—
Derivative instruments with negative fair value, net of cash collateral	287,509		287,509		658		286,851		—

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, 2023 (in thousands):

	Carrying Value		Estimated Fair Value		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and due from banks	$	947,613	$	947,613	$	947,613	$	—	$	—
Interest-bearing cash and cash equivalents	400,652		400,652		400,652		—		—
Trading securities:
U.S. government securities	10,959		10,959		9,017		1,942		—
Residential agency mortgage-backed securities	5,105,137		5,105,137		—		5,105,137		—
Municipal securities	37,413		37,413		—		37,413		—
Other trading securities	39,996		39,996		—		39,996		—
Total trading securities	5,193,505		5,193,505		9,017		5,184,488		—
Investment securities:
Municipal securities	120,705		125,525		—		12,305		113,220
Residential agency mortgage-backed securities	2,092,083		1,917,810		—		1,917,810		—
Commercial agency mortgage-backed securities	15,914		15,067		—		15,067		—
Other debt securities	15,787		14,184		—		14,184		—
Total investment securities	2,244,489		2,072,586		—		1,959,366		113,220
Allowance for credit losses	(336)		—		—		—		—
Investment securities, net of allowance	2,244,153		2,072,586		—		1,959,366		113,220
Available for sale securities:
U.S. Treasury	925		925		925		—		—
Municipal securities	502,833		502,833		—		502,833		—
Residential agency mortgage-backed securities	6,834,720		6,834,720		—		6,834,720		—
Residential non-agency mortgage-backed securities	799,877		799,877		—		799,877		—
Commercial agency mortgage-backed securities	4,147,853		4,147,853		—		4,147,853		—
Other debt securities	473		473		—		—		473
Total available for sale securities	12,286,681		12,286,681		925		12,285,283		473
Fair value option securities — Residential agency mortgage-backed securities	20,671		20,671		—		20,671		—
Residential mortgage loans held for sale	56,935		56,935		—		49,749		7,186
Loans:
Commercial	14,803,769		14,862,873		—		—		14,862,873
Commercial real estate	5,337,647		5,270,657		—		—		5,270,657
Loans to individuals	3,763,552		3,634,855		—		—		3,634,855
Total loans	23,904,968		23,768,385		—		—		23,768,385
Allowance for loan losses	(277,123)		—		—		—		—
Loans, net of allowance	23,627,845		23,768,385		—		—		23,768,385
Mortgage servicing rights	293,884		293,884		—		—		293,884
Derivative instruments with positive fair value, net of cash collateral	410,304		410,304		—		410,304		—
Deposits with no stated maturity	31,007,679		31,007,679		—		—		31,007,679
Time deposits	3,012,022		2,993,685		—		—		2,993,685
Other borrowed funds	8,824,300		8,824,299		—		—		8,824,299
Subordinated debentures	131,150		115,798		—		115,798		—
Derivative instruments with negative fair value, net of cash collateral	587,473		587,473		2,607		584,866		—

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.

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Subsequent Events

6 Months Ended

Jun. 30, 2024

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Subsequent Events

The Company evaluated events from the date of the consolidated financial statements on June 30, 2024 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.

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Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 163,713	$ 151,308	$ 247,416	$ 313,676

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Insider Trading Arrangements

3 Months Ended

Jun. 30, 2024

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

No Company director or officer (as defined in Exchange Act Rule 16a-1(f)) has adopted, modified or terminated any trading arrangements during the second quarter of 2024.

Certain of our officers or directors have made elections to participate in, and are participating in, our dividend reinvestment plan and 401(k) plan, and have made, and may from time to time make, elections to have shares withheld to cover withholding taxes on issuances of shares to such officers or directors, which may be designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act or may constitute non-Rule 10b5-1 trading arrangements (as defined in Item 408(c) of Regulation S-K).

Rule 10b5-1 Arrangement Adopted

false

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2024

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

The accompanying unaudited consolidated financial statements of BOK Financial 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, BOK Financial Securities, Inc. and BOK Financial Private Wealth, Inc. Operating divisions of BOKF, NA 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 ASU 2023-01, Leases (Topic 842): Common Control Arrangements

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 did not have a material impact on the Company's financial statements.

FASB ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

The FASB issued ASU 2023-07 on November 27, 2023 which is intended to improve reportable segment disclosure requirements. Under previous guidance, while entities were required to disclose segment revenue and measure of profit or loss, there has been limited disclosure around the reporting of segment expenses. In addition to enhanced disclosures about significant segment expenses, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the requirements of the expanded segment disclosures but does not expect the additional disclosures to have a material impact on the reported segment information.

FASB ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures

The FASB issued ASU 2023-09 on December 14, 2023 which amends income tax disclosures to provide information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance requires the entity to disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. The Company is currently assessing the impact ASU 2023-09 will have on its income tax disclosures.

FASB ASU 2024-01, Compensation—Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards

The FASB issued ASU 2024-01 on March 21, 2024 which provides illustrative guidance to help entities determine whether profits interest and similar awards should be accounted for as share-based payment arrangements within the scope of Topic 718, Compensation—Stock Compensation. The ASU is effective for annual periods beginning after December 15, 2024, including interim periods within those periods. Adoption of ASU 2024-01 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, interest rates, foreign exchange rates and other commodities 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 in the Consolidated Statements of Earnings.

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.

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 are 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.

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 ongoing 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% 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% of the committed dollars in the portfolio is calculated using charge-off migration.

The expected credit loss on approximately 1% 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.

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 BOKF, NA. 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.

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Derivative Instruments and Hedging Activities (Policies)

6 Months Ended

Jun. 30, 2024

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, interest rates, foreign exchange rates and other commodities 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 in the Consolidated Statements of Earnings.

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.

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Securities (Tables)

6 Months Ended

Jun. 30, 2024

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):

	June 30, 2024				December 31, 2023
	Fair Value		Net Unrealized Gain (Loss)		Fair Value		Net Unrealized Gain (Loss)
U.S. government securities	$	71,169	$	33	$	10,959	$	28
Residential agency mortgage-backed securities	5,023,892		5,742		5,105,137		98,124
Municipal securities	56,780		152		37,413		323
Other trading securities	60,950		83		39,996		160
Total trading securities	$	5,212,791	$	6,010	$	5,193,505	$	98,635

Investment Securities (Held-to-Maturity) [Table Text Block]

The amortized cost and fair values of investment securities are as follows (in thousands):

	June 30, 2024
	Amortized		Carrying		Fair		Gross Unrealized
	Cost		Value1		Value		Gain		Loss
Municipal securities	$	107,188	$	107,188	$	109,700	$	2,976	$	(464)
Mortgage-backed securities:
Residential agency	2,129,826		1,990,626		1,786,096		91		(204,621)
Commercial agency	17,258		16,066		15,030		—		(1,036)
Other debt securities	15,288		15,288		13,706		—		(1,582)
Total investment securities	2,269,560		2,129,168		1,924,532		3,067		(207,703)
Allowance for credit losses	(287)		(287)		—		—		—
Investment securities, net of allowance	$	2,269,273	$	2,128,881	$	1,924,532	$	3,067	$	(207,703)

1    Carrying value includes $140 million of net unrealized loss which remains in 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.

	December 31, 2023
	Amortized		Carrying		Fair		Gross Unrealized
	Cost		Value1		Value		Gain		Loss
Municipal securities	$	120,705	$	120,705	$	125,525	$	5,014	$	(194)
Mortgage-backed securities:
Residential agency	2,255,340		2,092,083		1,917,810		125		(174,398)
Commercial agency	17,258		15,914		15,067		—		(847)
Other debt securities	15,787		15,787		14,184		—		(1,603)
Total investment securities	2,409,090		2,244,489		2,072,586		5,139		(177,042)
Allowance for credit losses	(336)		(336)		—		—		—
Investment securities, net of allowance	$	2,408,754	$	2,244,153	$	2,072,586	$	5,139	$	(177,042)

1    Carrying value includes $165 million of net unrealized loss which remains in 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.

The amortized cost and fair values of investment securities at June 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):

	Less than One Year		One to Five Years		Six to Ten Years		Over Ten Years		Total		Weighted Average Maturity1
Fixed maturity debt securities:
Carrying value	$	18,247	$	101,521	$	18,761	$	13	$	138,542	3.10
Fair value	18,397		102,988		17,038		13		138,436
Residential mortgage-backed securities:
Carrying value									$	1,990,626	2
Fair value									1,786,096
Total investment securities:
Carrying value									$	2,129,168
Fair value									1,924,532

1Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.

2The average expected lives of residential mortgage-backed securities were 4.9 years based upon current prepayment assumptions.

Temporarily Impaired Investment Securities

(dollars in thousands):

	June 30, 2024
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investment:
Municipal securities	25	$	16,795	$	150	$	7,679	$	314	$	24,474	$	464
Mortgage-backed securities:
Residential agency	116	—		—		1,785,118		204,621		1,785,118		204,621
Commercial agency	2	—		—		15,030		1,036		15,030		1,036
Other debt securities	3	—		—		8,693		1,582		8,693		1,582
Total investment securities	146	$	16,795	$	150	$	1,816,520	$	207,553	$	1,833,315	$	207,703

	December 31, 2023
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Investment:
Municipal securities	13	$	1,931	$	5	$	6,600	$	189	$	8,531	$	194
Mortgage-backed securities:
Residential agency	116	—		—		1,916,732		174,398		1,916,732		174,398
Commercial agency	2	—		—		15,067		847		15,067		847
Other debt securities	3	—		—		8,672		1,603		8,672		1,603
Total investment securities	134	$	1,931	$	5	$	1,947,071	$	177,037	$	1,949,002	$	177,042

Available For Sale Securities [Table Text Block]

The amortized cost and fair value of available for sale securities are as follows (in thousands):

	June 30, 2024
	Amortized		Fair		Gross Unrealized
	Cost		Value		Gain		Loss
U.S. Treasury	$	1,000	$	923	$	—	$	(77)
Municipal securities	301,294		278,043		—		(23,251)
Mortgage-backed securities:
Residential agency	8,401,476		8,108,567		12,321		(305,230)
Residential non-agency	870,162		828,049		10,441		(52,554)
Commercial agency	3,868,588		3,577,729		816		(291,675)
Other debt securities	500		473		—		(27)
Total available for sale securities	$	13,443,020	$	12,793,784	$	23,578	$	(672,814)

	December 31, 2023
	Amortized		Fair		Gross Unrealized
	Cost		Value		Gain		Loss
U.S. Treasury	$	1,000	$	925	$	—	$	(75)
Municipal securities	544,707		502,833		1		(41,875)
Mortgage-backed securities:
Residential agency	7,066,645		6,834,720		36,983		(268,908)
Residential non-agency	833,535		799,877		12,865		(46,523)
Commercial agency	4,456,918		4,147,853		2,972		(312,037)
Other debt securities	500		473		—		(27)
Total available for sale securities	$	12,903,305	$	12,286,681	$	52,821	$	(669,445)

The amortized cost and fair values of available for sale securities at June 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):

	Less than One Year		One to Five Years		Six to Ten Years		Over Ten Years		Total		Weighted Average Maturity1
Fixed maturity debt securities:
Amortized cost	$	415,221	$	2,459,948	$	852,408	$	443,805	$	4,171,382	5.08
Fair value	411,548		2,242,456		780,072		423,092		3,857,168
Residential mortgage-backed securities:
Amortized cost									$	9,271,637	2
Fair value									8,936,615
Total available for sale securities:
Amortized cost									$	13,443,020
Fair value									12,793,784

1Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.

2The average expected lives of residential mortgage-backed securities were 4.3 years based upon current prepayment assumptions.

Sales of available for sale securities resulted in gains and losses as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Proceeds	$	1,836	$	135,489	$	737,830	$	135,489
Gross realized gains	222		703		455		703
Gross realized losses	(188)		(3,713)		(45,592)		(3,713)
Related federal and state income tax expense (benefit)	8		(708)		(10,616)		(708)

Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]

	June 30, 2024
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for sale:
U.S. Treasury	1	$	—	$	—	$	923	$	77	$	923	$	77
Municipal securities	130	11,009		58		257,764		23,193		268,773		23,251
Mortgage-backed securities:
Residential agency	793	3,033,904		24,223		3,650,900		281,007		6,684,804		305,230
Residential non-agency	41	166,281		1,108		515,977		51,446		682,258		52,554
Commercial agency	240	183,004		2,009		3,151,499		289,666		3,334,503		291,675
Other debt securities	1	—		—		473		27		473		27
Total available for sale securities	1,206	$	3,394,198	$	27,398	$	7,577,536	$	645,416	$	10,971,734	$	672,814

	December 31, 2023
	Number of Securities	Less Than 12 Months				12 Months or Longer				Total
		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for sale:
U.S. Treasury	1	$	—	$	—	$	925	$	75	$	925	$	75
Municipal securities	190	6,799		410		494,955		41,465		501,754		41,875
Mortgage-backed securities:
Residential agency	630	690,118		3,689		3,717,975		265,219		4,408,093		268,908
Residential non-agency	32	116,077		1,244		451,370		45,279		567,447		46,523
Commercial agency	269	392,828		2,626		3,421,757		309,411		3,814,585		312,037
Other debt securities	1	—		—		473		27		473		27
Total available for sale securities	1,123	$	1,205,822	$	7,969	$	8,087,455	$	661,476	$	9,293,277	$	669,445

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):

	June 30, 2024				December 31, 2023
	Fair Value		Net Unrealized Gain (Loss)		Fair Value		Net Unrealized Gain (Loss)
Residential agency mortgage-backed securities	$	19,050	$	(1,805)	$	20,671	$	(1,406)

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Derivatives (Tables)

6 Months Ended

Jun. 30, 2024

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 June 30, 2024 (in thousands):

	Assets
	Notional1		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	$	2,964,667	$	109,692	$	(2,691)	$	107,001	$	(103,743)	$	3,258
Energy contracts	7,472,357		631,285		(435,236)		196,049		(38,770)		157,279
Foreign exchange contracts	35,606		35,451		—		35,451		(22)		35,429
Equity option contracts	1,593		158		—		158		(50)		108
Total customer risk management programs	10,474,223		776,586		(437,927)		338,659		(142,585)		196,074
Trading	25,238,831		82,976		(59,454)		23,522		(1,520)		22,002
Internal risk management programs	456,976		7,284		(284)		7,000		—		7,000
Total derivative contracts	$	36,170,030	$	866,846	$	(497,665)	$	369,181	$	(144,105)	$	225,076
	Liabilities
	Notional1		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	$	2,964,667	$	109,685	$	(2,691)	$	106,994	$	—	$	106,994
Energy contracts	7,851,998		619,809		(435,236)		184,573		(54,007)		130,566
Foreign exchange contracts	35,590		35,419		—		35,419		(34)		35,385
Equity option contracts	1,593		158		—		158		—		158
Total customer risk management programs	10,853,848		765,071		(437,927)		327,144		(54,041)		273,103
Trading	24,337,408		83,121		(59,454)		23,667		(10,545)		13,122
Internal risk management programs	79,617		1,568		(284)		1,284		—		1,284
Total derivative contracts	$	35,270,873	$	849,760	$	(497,665)	$	352,095	$	(64,586)	$	287,509

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, 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	$	2,754,476	$	108,450	$	(6,810)	$	101,640	$	(94,608)	$	7,032
Energy contracts	7,846,190		836,425		(399,148)		437,277		(169,141)		268,136
Foreign exchange contracts	54,999		53,863		—		53,863		(872)		52,991
Equity option contracts	3,316		54		—		54		(44)		10
Total customer risk management programs	10,658,981		998,792		(405,958)		592,834		(264,665)		328,169
Trading	16,264,818		118,545		(37,111)		81,434		(6,996)		74,438
Internal risk management programs	425,014		7,697		—		7,697		—		7,697
Total derivative contracts	$	27,348,813	$	1,125,034	$	(443,069)	$	681,965	$	(271,661)	$	410,304
	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	$	2,754,476	$	108,402	$	(6,810)	$	101,592	$	—	$	101,592
Energy contracts	8,254,004		831,467		(399,148)		432,319		(6,441)		425,878
Foreign exchange contracts	54,405		53,065		—		53,065		—		53,065
Equity option contracts	3,316		54		—		54		—		54
Total customer risk management programs	11,066,201		992,988		(405,958)		587,030		(6,441)		580,589
Trading	20,644,156		224,648		(37,111)		187,537		(181,917)		5,620
Internal risk management programs	2,244		1,264		—		1,264		—		1,264
Total derivative contracts	$	31,712,601	$	1,218,900	$	(443,069)	$	775,831	$	(188,358)	$	587,473

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
	June 30, 2024				June 30, 2023
	Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net		Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net
Customer risk management programs:
Interest rate contracts	$	547	$	—	$	2,339	$	—
Energy contracts	6,162		—		11,250		—
Foreign exchange contracts	56		—		53		—
Equity option contracts	—		—		—		—
Total customer risk management programs	6,765		—		13,642		—
Trading1	32,576		—		64,172		—
Internal risk management programs	—		(1,091)		—		(8,159)
Total derivative contracts	$	39,341	$	(1,091)	$	77,814	$	(8,159)

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.

	Six Months Ended
	June 30, 2024				June 30, 2023
	Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net		Brokerage and Trading Revenue		Gain (Loss) on Derivatives, Net
Customer risk management programs:
Interest rate contracts	3,007		—		4,109		—
Energy contracts	9,977		—		17,803		—
Foreign exchange contracts	106		—		84		—
Equity option contracts	—		—		—		—
Total customer risk management programs	13,090		—		21,996		—
Trading1	116,282		—		1,079		—
Internal risk management programs	—		(9,724)		—		(9,503)
Total derivative contracts	$	129,372	$	(9,724)	$	23,075	$	(9,503)

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.

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Loans and Allowances for Credit Losses (Tables)

6 Months Ended

Jun. 30, 2024

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):

	June 30, 2024								December 31, 2023
	Fixed Rate		Variable Rate		Non-accrual		Total		Fixed Rate		Variable Rate		Non-accrual		Total
Commercial	$	3,604,024	$	11,960,951	$	58,434	$	15,623,409	$	3,558,563	$	11,135,075	$	110,131	$	14,803,769
Commercial real estate	756,055		4,314,637		12,883		5,083,575		791,757		4,538,570		7,320		5,337,647
Loans to individuals	2,428,707		1,398,524		19,366		3,846,597		2,282,914		1,452,620		28,018		3,763,552
Total	$	6,788,786	$	17,674,112	$	90,683	$	24,553,581	$	6,633,234	$	17,126,265	$	145,469	$	23,904,968

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
	June 30, 2024
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	146,267	$	97,479	$	37,877	$	281,623
Provision for loan losses	10,441		(1,042)		3,749		13,148
Loans charged off	(6,391)		(205)		(1,344)		(7,940)
Recoveries of loans previously charged off	420		24		551		995
Ending balance	$	150,737	$	96,256	$	40,833	$	287,826
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	17,790	$	27,865	$	1,664	$	47,319
Provision for off-balance sheet credit risk	(474)		(4,551)		42		(4,983)
Ending balance	$	17,316	$	23,314	$	1,706	$	42,336

	Six Months Ended
	June 30, 2024
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	141,232	$	94,718	$	41,173	$	277,123
Provision for loan losses	18,752		2,953		1,403		23,108
Loans charged off	(10,631)		(1,455)		(2,914)		(15,000)
Recoveries of loans previously charged off	1,384		40		1,171		2,595
Ending balance	$	150,737	$	96,256	$	40,833	$	287,826
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	19,762	$	27,439	$	1,776	$	48,977
Provision for off-balance sheet credit risk	(2,446)		(4,125)		(70)		(6,641)
Ending balance	$	17,316	$	23,314	$	1,706	$	42,336

	Three Months Ended
	June 30, 2023
	Commercial		Commercial Real Estate		Loans to Individuals		Total
Allowance for loan losses:
Beginning balance	$	139,898	$	66,003	$	43,559	$	249,460
Provision for loan losses	5,420		14,300		237		19,957
Loans charged off	(2,797)		(4,000)		(1,252)		(8,049)
Recoveries of loans previously charged off	748		44		554		1,346
Ending balance	$	143,269	$	76,347	$	43,098	$	262,714
Allowance for off-balance sheet credit risk from unfunded loan commitments:
Beginning balance	$	20,608	$	40,211	$	2,124	$	62,943
Provision for off-balance sheet credit risk	(314)		(2,530)		(159)		(3,003)
Ending balance	$	20,294	$	37,681	$	1,965	$	59,940

	Six Months Ended
	June 30, 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	11,750		24,726		(1,994)		34,482
Loans charged off	(2,809)		(6,208)		(2,699)		(11,716)
Recoveries of loans previously charged off	2,742		181		1,321		4,244
Ending balance	$	143,269	$	76,347	$	43,098	$	262,714
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	2,048		(2,809)		(218)		(979)
Ending balance	$	20,294	$	37,681	$	1,965	$	59,940

An $8.0 million provision for credit losses was necessary for the second quarter of 2024, reflecting continued loan growth and a stable economic outlook.

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at June 30, 2024 is as follows (in thousands):

	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	15,564,975	$	148,523	$	58,434	$	2,214	$	15,623,409	$	150,737
Commercial real estate	5,070,692		96,256		12,883		—		5,083,575		96,256
Loans to individuals	3,827,231		40,833		19,366		—		3,846,597		40,833
Total	$	24,462,898	$	285,612	$	90,683	$	2,214	$	24,553,581	$	287,826

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2023 is as follows (in thousands):

	Collectively Measured for General Allowances				Individually Measured for Specific Allowances				Total
	Recorded Investment		Related Allowance		Recorded Investment		Related Allowance		Recorded Investment		Related Allowance
Commercial	$	14,693,638	$	138,540	$	110,131	$	2,692	$	14,803,769	$	141,232
Commercial real estate	5,330,327		94,718		7,320		—		5,337,647		94,718
Loans to individuals	3,735,534		41,173		28,018		—		3,763,552		41,173
Total	$	23,759,499	$	274,431	$	145,469	$	2,692	$	23,904,968	$	277,123

Schedule of Credit Quality Indicators [Table Text Block]

The following table summarizes the Company’s loan portfolio at June 30, 2024 by the risk grade categories and vintage (in thousands): 

	Origination Year
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Commercial:
Healthcare
Pass	$	275,268	$	625,281	$	921,843	$	565,653	$	379,669	$	992,889	$	262,814	$	12	$	4,023,429
Special Mention	—		15,000		31,907		1,178		—		49,823		505		—		98,413
Accruing Substandard	—		—		110		18,287		58,103		10,896		975		—		88,371
Nonaccrual	—		1,375		237		—		—		19,233		—		—		20,845
Total healthcare	275,268		641,656		954,097		585,118		437,772		1,072,841		264,294		12		4,231,058
Loans charged off, year-to-date	—		—		—		—		—		6,840		—		—		6,840
Services
Pass	330,400		735,946		506,992		350,009		211,087		691,191		704,785		459		3,530,869
Special Mention	—		1,814		1,035		898		—		8,330		1,758		—		13,835
Accruing Substandard	—		—		17,437		147		1,607		8,929		436		719		29,275
Nonaccrual	—		—		—		1,361		363		—		1,441		—		3,165
Total services	330,400		737,760		525,464		352,415		213,057		708,450		708,420		1,178		3,577,144
Loans charged off, year-to-date	—		—		—		—		10		—		9		—		19
Energy
Pass	55,874		103,305		78,634		2,707		7,288		20,140		3,123,257		—		3,391,205
Special Mention	—		—		—		—		—		—		17,662		—		17,662
Accruing Substandard	—		—		—		—		—		—		13,950		—		13,950
Nonaccrual	—		—		—		—		—		80		28,588		—		28,668
Total energy	55,874		103,305		78,634		2,707		7,288		20,220		3,183,457		—		3,451,485
Loans charged off, year-to-date	—		—		—		—		—		—		—		—		—
General business
Pass	543,566		741,365		376,769		191,698		128,816		346,596		1,918,875		1,733		4,249,418
Special Mention	2,488		15,760		5,201		11,765		535		1,764		9,307		—		46,820
Accruing Substandard	—		4,090		38,900		1,542		1,193		6,539		9,301		163		61,728
Nonaccrual	—		994		66		—		—		35		4,658		3		5,756
Total general business	546,054		762,209		420,936		205,005		130,544		354,934		1,942,141		1,899		4,363,722
Loans charged off, year-to-date	—		27		1,399		—		—		158		2,182		6		3,772
Total commercial	1,207,596		2,244,930		1,979,131		1,145,245		788,661		2,156,445		6,098,312		3,089		15,623,409
Commercial real estate:
Pass	39,377		449,401		2,084,982		919,126		343,462		1,025,082		136,787		—		4,998,217
Special Mention	—		403		14,907		32,131		—		16,949		—		—		64,390
Accruing Substandard	—		—		—		—		—		8,085		—		—		8,085
Nonaccrual	—		2,885		—		—		—		9,998		—		—		12,883
Total commercial real estate	39,377		452,689		2,099,889		951,257		343,462		1,060,114		136,787		—		5,083,575
Loans charged off, year-to-date	—		—		—		—		—		1,455		—		—		1,455

	Origination Year
	2024		2023		2022		2021		2020		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	249,631		377,061		308,510		330,796		332,439		267,548		378,185		21,123		2,265,293
Special Mention	—		42		193		176		—		155		1,575		—		2,141
Accruing Substandard	—		49		—		3		—		—		1,113		—		1,165
Nonaccrual	—		107		433		434		510		8,218		2,377		548		12,627
Total residential mortgage	249,631		377,259		309,136		331,409		332,949		275,921		383,250		21,671		2,281,226
Loans charged off, year-to-date	—		—		—		—		—		5		9		—		14
Residential mortgage guaranteed by U.S. government agencies
Pass	—		893		3,466		2,727		3,982		114,140		—		—		125,208
Nonaccrual	—		—		—		—		280		6,337		—		—		6,617
Total residential mortgage guaranteed by U.S. government agencies	—		893		3,466		2,727		4,262		120,477		—		—		131,825
Personal
Pass	148,880		180,029		187,435		133,383		110,809		171,280		499,184		92		1,431,092
Special Mention	—		28		35		65		15		2		1		—		146
Accruing Substandard	—		30		12		3		7		144		1,990		—		2,186
Nonaccrual	—		26		44		11		9		8		24		—		122
Total personal	148,880		180,113		187,526		133,462		110,840		171,434		501,199		92		1,433,546
Loans charged off, year-to-date1	2,732		51		45		26		—		—		26		20		2,900
Total loans to individuals	398,511		558,265		500,128		467,598		448,051		567,832		884,449		21,763		3,846,597
Total loans	$	1,645,484	$	3,255,884	$	4,579,148	$	2,564,100	$	1,580,174	$	3,784,391	$	7,119,548	$	24,852	$	24,553,581

1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

The following table summarizes the Company's loan portfolio at December 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:
Healthcare
Pass	650,768		895,602		590,736		409,001		331,897		809,858		281,378		15		3,969,255
Special Mention	—		—		—		21,791		—		31,235		5		—		53,031
Accruing Substandard	—		2,128		18,508		6,911		—		10,896		975		—		39,418
Nonaccrual	—		—		—		30,290		23,129		28,110		—		—		81,529
Total healthcare	650,768		897,730		609,244		467,993		355,026		880,099		282,358		15		4,143,233
Loans charged off, year-to-date	—		—		—		—		2,500		—		—		—		2,500
Services
Pass	900,090		526,776		401,872		228,818		106,112		643,477		730,729		595		3,538,469
Special Mention	—		1,085		1,520		1,341		534		4,522		81		—		9,083
Accruing Substandard	—		13,712		178		326		3,972		3,746		3,108		13		25,055
Nonaccrual	—		—		1,635		338		—		—		1,643		—		3,616
Total services	900,090		541,573		405,205		230,823		110,618		651,745		735,561		608		3,576,223
Loans charged off, year-to-date	—		—		3,060		—		—		—		2,642		—		5,702
Energy
Pass	$	190,122	$	100,006	$	43,769	$	7,876	$	9,562	$	11,583	$	3,025,590	$	—	$	3,388,508
Special Mention	—		—		—		—		—		—		13,950		—		13,950
Accruing Substandard	—		—		—		—		—		—		16,800		—		16,800
Nonaccrual	—		—		—		—		—		99		17,744		—		17,843
Total energy	190,122		100,006		43,769		7,876		9,562		11,682		3,074,084		—		3,437,101
General business
Pass	942,468		436,832		224,735		138,951		101,100		287,744		1,389,128		2,164		3,523,122
Special Mention	10,264		16,167		8,420		1,253		321		8,295		897		—		45,617
Accruing Substandard	4,401		33,194		1,716		27		—		—		31,992		—		71,330
Nonaccrual	—		1,134		—		—		—		48		5,956		5		7,143
Total general business	957,133		487,327		234,871		140,231		101,421		296,087		1,427,973		2,169		3,647,212
Loans charged off, year-to-date	—		—		4,598		2		—		48		10		38		4,696
Total commercial	2,698,113		2,026,636		1,293,089		846,923		576,627		1,839,613		5,519,976		2,792		14,803,769
Commercial real estate:
Pass	396,891		1,941,913		1,194,759		416,647		513,555		705,092		136,095		—		5,304,952
Special Mention	—		476		—		—		—		19,171		—		—		19,647
Accruing Substandard	2,992		—		3		—		—		2,733		—		—		5,728
Nonaccrual	—		—		—		—		7,170		150		—		—		7,320
Total commercial real estate	399,883		1,942,389		1,194,762		416,647		520,725		727,146		136,095		—		5,337,647
Loans charged off, year-to-date	—		—		—		—		—		8,446		—		—		8,446

	Origination Year
	2023		2022		2021		2020		2019		Prior		Revolving Loans		Revolving Loans Converted to Term Loans		Total
Loans to individuals:
Residential mortgage
Pass	426,089		320,733		342,927		349,742		54,801		243,356		375,739		23,895		2,137,282
Special Mention	157		140		131		1,361		18		134		2,982		93		5,016
Accruing Substandard	—		150		—		—		37		49		50		—		286
Nonaccrual	79		1,419		237		544		344		12,381		2,387		665		18,056
Total residential mortgage	426,325		322,442		343,295		351,647		55,200		255,920		381,158		24,653		2,160,640
Loans charged off, year-to-date	—		—		51		4		—		17		—		1		73
Residential mortgage guaranteed by U.S. government agencies
Pass	633		1,788		2,220		4,297		6,441		124,719		—		—		140,098
Nonaccrual	—		—		—		280		375		9,054		—		—		9,709
Total residential mortgage guaranteed by U.S. government agencies	633		1,788		2,220		4,577		6,816		133,773		—		—		149,807
Personal
Pass	218,401		229,580		149,291		136,215		75,348		137,629		503,841		145		1,450,450
Special Mention	66		39		106		30		8		—		1,918		3		2,170
Accruing Substandard	—		64		12		9		144		—		3		—		232
Nonaccrual	4		51		9		16		3		12		158		—		253
Total personal	218,471		229,734		149,418		136,270		75,503		137,641		505,920		148		1,453,105
Loans charged off, year-to-date1	5,636		82		96		43		—		10		6		26		5,899
Total loans to individuals	645,429		553,964		494,933		492,494		137,519		527,334		887,078		24,801		3,763,552
Total loans	$	3,743,425	$	4,522,989	$	2,982,784	$	1,756,064	$	1,234,871	$	3,094,093	$	6,543,149	$	27,593	$	23,904,968

1    Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

Financing Receivable, Nonaccrual [Table Text Block]

A summary of nonaccruing loans at June 30, 2024 follows (in thousands): 

	As of June 30, 2024
	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	20,845	$	10,930	$	9,915	$	1,700
Services	3,165		1,521		1,644		441
Energy	28,668		28,668		—		—
General business	5,756		5,618		138		73
Total commercial	58,434		46,737		11,697		2,214
Commercial real estate	12,883		12,883		—		—
Loans to individuals:
Residential mortgage	12,627		12,627		—		—
Residential mortgage guaranteed by U.S. government agencies	6,617		6,617		—		—
Personal	122		122		—		—
Total loans to individuals	19,366		19,366		—		—
Total	$	90,683	$	78,986	$	11,697	$	2,214

A summary of nonaccruing loans at December 31, 2023 follows (in thousands): 

	As of December 31, 2023
	Total		With No Allowance		With Allowance		Related Allowance
Commercial:
Healthcare	$	81,529	$	40,372	$	41,157	$	1,478
Services	3,616		1,684		1,932		1,214
Energy	17,843		17,843		—		—
General business	7,143		7,143		—		—
Total commercial	110,131		67,042		43,089		2,692
Commercial real estate	7,320		7,320		—		—
Loans to individuals:
Residential mortgage	18,056		18,056		—		—
Residential mortgage guaranteed by U.S. government agencies	9,709		9,709		—		—
Personal	253		253		—		—
Total loans to individuals	28,018		28,018		—		—
Total	$	145,469	$	102,380	$	43,089	$	2,692

Summary of Loans by Aging Status [Table Text Block]

A summary of loans currently performing and past due as of June 30, 2024 is as follows (in thousands):

			Past Due								Past Due 90 Days or More and Accruing
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total
Commercial:
Healthcare	$	4,214,505	$	1,375	$	4,415	$	10,763	$	4,231,058	$	—
Services	3,575,551		—		1,158		435		3,577,144		72
Energy	3,451,485		—		—		—		3,451,485		—
General business	4,354,147		1,044		163		8,368		4,363,722		2,794
Total commercial	15,595,688		2,419		5,736		19,566		15,623,409		2,866
Commercial real estate	5,073,416		—		3,021		7,138		5,083,575		—
Loans to individuals:
Residential mortgage	2,267,945		9,907		1,615		1,759		2,281,226		97
Residential mortgage guaranteed by U.S. government agencies	40,693		23,918		15,796		51,418		131,825		46,579
Personal	1,432,561		933		52		—		1,433,546		—
Total loans to individuals	3,741,199		34,758		17,463		53,177		3,846,597		46,676
Total	$	24,410,303	$	37,177	$	26,220	$	79,881	$	24,553,581	$	49,542

A summary of loans currently performing and past due as of December 31, 2023 is as follows (in thousands):

			Past Due								Past Due 90 Days or More and Accruing
	Current		30 to 59 Days		60 to 89 Days		90 Days or More		Total
Commercial:
Healthcare	$	4,071,336	$	18,019	$	30,290	$	23,588	$	4,143,233	$	—
Services	3,575,787		2		—		434		3,576,223		—
Energy	3,437,101		—		—		—		3,437,101		—
General business	3,639,775		412		1,157		5,868		3,647,212		—
Total commercial	14,723,999		18,433		31,447		29,890		14,803,769		—
Commercial real estate	5,327,481		2,992		—		7,174		5,337,647		3
Loans to individuals:
Residential mortgage	2,149,927		6,340		1,494		2,879		2,160,640		36
Residential mortgage guaranteed by U.S. government agencies	54,122		25,085		17,053		53,547		149,807		48,201
Personal	1,450,302		2,561		88		154		1,453,105		131
Total loans to individuals	3,654,351		33,986		18,635		56,580		3,763,552		48,368
Total	$	23,705,831	$	55,411	$	50,082	$	93,644	$	23,904,968	$	48,371

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Mortgage Banking Activities (Tables)

6 Months Ended

Jun. 30, 2024

Mortgage Banking [Abstract]

Components of Residential Mortgage Loans Held For Sale [Table Text Block]

	June 30, 2024				December 31, 2023
	Unpaid Principal Balance/ Notional		Fair Value		Unpaid Principal Balance/ Notional		Fair Value
Residential mortgage loans held for sale	$	105,922	$	105,706	$	56,922	$	56,457
Residential mortgage loan commitments	62,960		1,945		34,783		1,379
Forward sales contracts	127,010		(186)		75,448		(901)
			$	107,465			$	56,935

Mortgage Banking Revenue [Table Text Block]

Mortgage banking revenue was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Production revenue:
Net realized gains (losses) on sale of mortgage loans	$	2,338	$	(296)	$	4,364	$	(2,027)
Net change in unrealized gain (loss) on mortgage loans held for sale	631		(496)		249		(126)
Net change in the fair value of mortgage loan commitments	(528)		(865)		566		775
Net change in the fair value of forward sales contracts	(72)		1,373		715		461
Total production revenue (loss)	2,369		(284)		5,894		(917)
Servicing revenue	16,259		15,425		31,701		30,425
Total mortgage banking revenue	$	18,628	$	15,141	$	37,595	$	29,508

Summary of Mortgage Servicing Rights [Table Text Block]

The following represents a summary of mortgage servicing rights (dollars in thousands):

	June 30, 2024			December 31, 2023
Number of residential mortgage loans serviced for others	125,698			115,967
Outstanding principal balance of residential mortgage loans serviced for others	$	22,188,347		$	20,382,192
Weighted average interest rate	3.68		%	3.64		%
Remaining term (in months)	278			280

Activity in Capitalized Mortgage Servicing Rights [Table Text Block]

The following represents activity in capitalized mortgage servicing rights (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Beginning Balance	$	319,330	$	299,803	$	293,884	$	277,608
Additions	4,454		4,103		6,970		6,603
Acquisitions	14,021		—		31,421		31,138
Change in fair value due to principal payments	(8,012)		(8,445)		(13,459)		(13,829)
Change in fair value due to market assumption changes	3,453		9,261		14,430		3,202
Ending Balance	$	333,246	$	304,722	$	333,246	$	304,722

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:

	June 30, 2024	December 31, 2023
Discount rate – risk-free rate plus a market premium	9.91%	9.72%
Prepayment rate – based upon loan interest rate, original term and loan type	6.75%	7.34%
Loan servicing costs – annually per loan based upon loan type:
Performing loans	$73 - $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	4.38%	3.90%
Primary/secondary mortgage rate spread	115 bps	105 bps
Delinquency rate	2.48%	2.06%

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Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2024

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		Total
Balance, Dec. 31, 2022	$	(664,618)	$	(172,337)	(836,955)
Net change in unrealized gain (loss)	(36,363)		—		(36,363)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	—		32,084		32,084
Loss on available for sale securities, net	3,010		—		3,010
Other comprehensive income (loss), before income taxes	(33,353)		32,084		(1,269)
Federal and state income taxes	(8,839)		7,287		(1,552)
Other comprehensive income (loss), net of income taxes	(24,514)		24,797		283
Balance, June 30, 2023	$	(689,132)	$	(147,540)	$	(836,672)
Balance, Dec. 31, 2023	$	(473,212)	$	(125,888)	$	(599,100)
Net change in unrealized gain (loss)	(77,749)		—		(77,749)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities	—		24,210		24,210
Loss on available for sale securities, net	45,137		—		45,137
Other comprehensive income (loss), before income taxes	(32,612)		24,210		(8,402)
Federal and state income taxes	(7,695)		5,695		(2,000)
Other comprehensive income (loss), net of income taxes	(24,917)		18,515		(6,402)
Balance, June 30, 2024	$	(498,129)	$	(107,373)	$	(605,502)

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Earnings Per Share [Table Text Block]

(In thousands, except share and per share amounts)	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Numerator:
Net income attributable to BOK Financial Corp. shareholders	$	163,713	$	151,308	$	247,416	$	313,676
Less: Earnings allocated to participating securities	1,602		1,202		2,278		2,457
Numerator for basic earnings per share – income available to common shareholders	162,111		150,106		245,138		311,219
Effect of reallocating undistributed earnings of participating securities	—		—		—		—
Numerator for diluted earnings per share – income available to common shareholders	$	162,111	$	150,106	$	245,138	$	311,219
Denominator:
Weighted average shares outstanding	64,343,898		66,521,728		64,578,226		66,684,603
Less: Participating securities included in weighted average shares outstanding	629,694		527,596		576,072		522,555
Denominator for basic earnings per common share	63,714,204		65,994,132		64,002,154		66,162,048
Dilutive effect of employee stock compensation plans	—		—		—		—
Denominator for diluted earnings per common share	63,714,204		65,994,132		64,002,154		66,162,048
Basic earnings per share	$	2.54	$	2.27	$	3.83	$	4.70
Diluted earnings per share	$	2.54	$	2.27	$	3.83	$	4.70

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Reportable Segments (Tables)

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Reportable Segments [Table Text Block]

Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2024 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	283,328	$	6,192	$	2,612	$	3,889	$	296,021
Net interest income (expense) from internal sources	(79,593)		58,972		26,889		(6,268)		—
Net interest income	203,735		65,164		29,501		(2,379)		296,021
Net loans charged off and provision for credit losses	6,134		1,247		—		619		8,000
Net interest income after provision for credit losses	197,601		63,917		29,501		(2,998)		288,021
Other operating revenue	54,536		36,252		113,208		55,708		259,704
Other operating expense	76,114		55,128		90,214		115,234		336,690
Net direct contribution	176,023		45,041		52,495		(62,524)		211,035
Gain (loss) on financial instruments, net	168		(3,577)		—		3,409		—
Change in fair value of mortgage servicing rights	—		3,453		—		(3,453)		—
Gain on repossessed assets, net	—		9		—		(9)		—
Corporate expense allocations	17,381		13,392		16,484		(47,257)		—
Net income before taxes	158,810		31,534		36,011		(15,320)		211,035
Federal and state income taxes	39,247		7,417		8,514		(7,875)		47,303
Net income	119,563		24,117		27,497		(7,445)		163,732
Net income attributable to non-controlling interests	—		—		—		19		19
Net income attributable to BOK Financial Corp. shareholders	$	119,563	$	24,117	$	27,497	$	(7,464)	$	163,713
Average assets	$	30,305,613	$	9,630,470	$	16,452,098	$	(5,192,982)	$	51,195,199

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2024 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	566,084	$	13,542	$	9,611	$	356	$	589,593
Net interest income (expense) from internal sources	(158,354)		115,757		48,288		(5,691)		—
Net interest income	407,730		129,299		57,899		(5,335)		589,593
Net loans charged off and provision for credit losses	10,294		3,055		(15)		2,666		16,000
Net interest income after provision for credit losses	397,436		126,244		57,914		(8,001)		573,593
Other operating revenue	104,542		72,459		231,912		12,492		421,405
Other operating expense	146,209		108,575		189,502		232,788		677,074
Net direct contribution	355,769		90,128		100,324		(228,297)		317,924
Gain (loss) on financial instruments, net	335		(13,240)		—		12,905		—
Change in fair value of mortgage servicing rights	—		14,430		—		(14,430)		—
Gain on repossessed assets, net	—		116		—		(116)		—
Corporate expense allocations	35,778		27,564		31,263		(94,605)		—
Net income (loss) before taxes	320,326		63,870		69,061		(135,333)		317,924
Federal and state income taxes	78,966		15,022		16,336		(39,826)		70,498
Net income (loss)	241,360		48,848		52,725		(95,507)		247,426
Net income attributable to non-controlling interests	—		—		—		10		10
Net income attributable to BOK Financial Corp. shareholders	$	241,360	$	48,848	$	52,725	$	(95,517)	$	247,416
Average assets	$	30,056,215	$	9,511,225	$	16,105,713	$	(5,061,768)	$	50,611,385

Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2023 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	299,712	$	17,828	$	4,415	$	306	$	322,261
Net interest income (expense) from internal sources	(77,975)		50,260		29,426		(1,711)		—
Net interest income	221,737		68,088		33,841		(1,405)		322,261
Net loans charged off and provision for credit losses	6,000		1,129		(45)		9,916		17,000
Net interest income after provision for credit losses	215,737		66,959		33,886		(11,321)		305,261
Other operating revenue	68,828		32,277		123,043		(15,099)		209,049
Other operating expense	77,559		52,340		84,587		104,187		318,673
Net direct contribution	207,006		46,896		72,342		(130,607)		195,637
Gain (loss) on financial instruments, net	231		(10,257)		—		10,026		—
Change in fair value of mortgage servicing rights	—		9,261		—		(9,261)		—
Gain on repossessed assets, net	408		—		—		(408)		—
Corporate expense allocations	21,404		12,318		12,784		(46,506)		—
Net income before taxes	186,241		33,582		59,558		(83,744)		195,637
Federal and state income taxes	45,462		7,898		14,056		(23,415)		44,001
Net income	140,779		25,684		45,502		(60,329)		151,636
Net income attributable to non-controlling interests	—		—		—		328		328
Net income attributable to BOK Financial Corp. shareholders	$	140,779	$	25,684	$	45,502	$	(60,657)	$	151,308
Average assets	$	28,170,869	$	9,597,723	$	12,949,258	$	(2,809,743)	$	47,908,107

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2023 is as follows (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management and Other		BOK Financial Consolidated
Net interest income from external sources	$	587,970	$	38,974	$	25,355	$	22,310	$	674,609
Net interest income (expense) from internal sources	(139,134)		96,324		44,087		(1,277)		—
Net interest income	448,836		135,298		69,442		21,033		674,609
Net loans charged off and provision for credit losses	6,076		2,313		(69)		24,680		33,000
Net interest income after provision for credit losses	442,760		132,985		69,511		(3,647)		641,609
Other operating revenue	125,673		62,887		231,954		(33,600)		386,914
Other operating expense	150,693		102,538		166,342		204,912		624,485
Net direct contribution	417,740		93,334		135,123		(242,159)		404,038
Gain (loss) on financial instruments, net	173		(14,930)		—		14,757		—
Change in fair value of mortgage servicing rights	—		3,202		—		(3,202)		—
Gain on repossessed assets, net	1,267		14		—		(1,281)		—
Corporate expense allocations	39,122		23,940		25,310		(88,372)		—
Net income before taxes	380,058		57,680		109,813		(143,513)		404,038
Federal and state income taxes	92,610		13,566		25,927		(42,197)		89,906
Net income	287,448		44,114		83,886		(101,316)		314,132
Net income attributable to non-controlling interests	—		—		—		456		456
Net income attributable to BOK Financial Corp. shareholders	$	287,448	$	44,114	$	83,886	$	(101,772)	$	313,676
Average assets	$	28,166,923	$	9,765,186	$	12,309,730	$	(3,291,232)	$	46,950,607

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Fees and Commissions Revenue Fees and Commissions Rvenue (Tables)

6 Months Ended

Jun. 30, 2024

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 June 30, 2024 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	27,695	$	—	$	27,695	$	27,695	$	—
Customer hedging revenue	3,408		—		3,047		310		6,765		6,765		—
Retail brokerage revenue	—		—		4,838		—		4,838		—		4,838
Investment banking revenue	4,106		—		9,613		—		13,719		3,942		9,777
Brokerage and trading revenue	7,514		—		45,193		310		53,017		38,402		14,615
TransFund EFT network revenue	21,883		776		(19)		—		22,640		—		22,640
Merchant services revenue	2,502		8		—		—		2,510		—		2,510
Corporate card revenue	1,868		—		161		67		2,096		—		2,096
Transaction card revenue	26,253		784		142		67		27,246		—		27,246
Personal trust revenue	—		—		26,770		—		26,770		—		26,770
Corporate trust revenue	—		—		8,646		—		8,646		—		8,646
Institutional trust & retirement plan services revenue	—		—		16,519		—		16,519		—		16,519
Investment management services and other revenue	—		—		5,641		—		5,641		—		5,641
Fiduciary and asset management revenue	—		—		57,576		—		57,576		—		57,576
Commercial account service charge revenue	15,395		552		603		—		16,550		—		16,550
Overdraft fee revenue	27		5,374		32		—		5,433		—		5,433
Check card revenue	—		6,049		—		—		6,049		—		6,049
Automated service charge and other deposit fee revenue	259		1,189		92		—		1,540		—		1,540
Deposit service charges and fees	15,681		13,164		727		—		29,572		—		29,572
Mortgage production revenue	—		2,369		—		—		2,369		2,369		—
Mortgage servicing revenue	—		16,964		—		(705)		16,259		16,259		—
Mortgage banking revenue	—		19,333		—		(705)		18,628		18,628		—
Other revenue	4,272		2,971		9,570		(2,825)		13,988		8,400		5,588
Total fees and commissions revenue	$	53,720	$	36,252	$	113,208	$	(3,153)	$	200,027	$	65,430	$	134,597

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 six months ended June 30, 2024 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	65,152	$	—	$	65,152	$	65,152	$	—
Customer hedging revenue	7,151		—		5,067		872		13,090		13,090		—
Retail brokerage revenue	—		—		9,531		—		9,531		—		9,531
Investment banking revenue	7,925		—		16,498		—		24,423		7,036		17,387
Brokerage and trading revenue	15,076		—		96,248		872		112,196		85,278		26,918
TransFund EFT network revenue	42,349		1,602		(37)		—		43,914		—		43,914
Merchant services revenue	4,682		17		—		—		4,699		—		4,699
Corporate card revenue	3,606		—		340		180		4,126		—		4,126
Transaction card revenue	50,637		1,619		303		180		52,739		—		52,739
Personal trust revenue	—		—		51,115		—		51,115		—		51,115
Corporate trust revenue	—		—		17,906		—		17,906		—		17,906
Institutional trust & retirement plan services revenue	—		—		32,667		—		32,667		—		32,667
Investment management services and other revenue	—		—		11,193		—		11,193		—		11,193
Fiduciary and asset management revenue	—		—		112,881		—		112,881		—		112,881
Commercial account service charge revenue	30,295		1,083		1,149		—		32,527		—		32,527
Overdraft fee revenue	63		10,768		62		—		10,893		—		10,893
Check card revenue	—		11,719		—		—		11,719		—		11,719
Automated service charge and other deposit fee revenue	528		2,425		165		—		3,118		—		3,118
Deposit service charges and fees	30,886		25,995		1,376		—		58,257		—		58,257
Mortgage production revenue	—		5,894		—		—		5,894		5,894		—
Mortgage servicing revenue	—		33,079		—		(1,378)		31,701		31,701		—
Mortgage banking revenue	—		38,973		—		(1,378)		37,595		37,595		—
Other revenue	7,751		5,872		21,104		(7,804)		26,923		16,312		10,611
Total fees and commissions revenue	$	104,350	$	72,459	$	231,912	$	(8,130)	$	400,591	$	139,185	$	261,406

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 June 30, 2023 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	36,921	$	—	$	36,921	$	36,921	$	—
Customer hedging revenue	12,839		—		(159)		962		13,642		13,642		—
Retail brokerage revenue	—		—		3,321		—		3,321		—		3,321
Insurance brokerage revenue	—		—		2,857		—		2,857		—		2,857
Investment banking revenue	3,514		—		4,751		—		8,265		3,452		4,813
Brokerage and trading revenue	16,353		—		47,691		962		65,006		54,015		10,991
TransFund EFT network revenue	20,483		907		(17)		2		21,375		—		21,375
Merchant services revenue	2,494		10		—		—		2,504		—		2,504
Corporate card revenue	1,834		—		184		106		2,124		—		2,124
Transaction card revenue	24,811		917		167		108		26,003		—		26,003
Personal trust revenue	—		—		25,315		—		25,315		—		25,315
Corporate trust revenue	—		—		7,201		—		7,201		—		7,201
Institutional trust & retirement plan services revenue	—		—		13,707		—		13,707		—		13,707
Investment management services and other revenue	—		—		6,775		(1)		6,774		—		6,774
Fiduciary and asset management revenue	—		—		52,998		(1)		52,997		—		52,997
Commercial account service charge revenue	13,364		530		488		(2)		14,380		—		14,380
Overdraft fee revenue	32		5,066		42		1		5,141		—		5,141
Check card revenue	—		5,976		—		(1)		5,975		—		5,975
Automated service charge and other deposit fee revenue	267		1,233		103		1		1,604		—		1,604
Deposit service charges and fees	13,663		12,805		633		(1)		27,100		—		27,100
Mortgage production revenue	—		(284)		—		—		(284)		(284)		—
Mortgage servicing revenue	—		15,993		—		(568)		15,425		15,425		—
Mortgage banking revenue	—		15,709		—		(568)		15,141		15,141		—
Other revenue	4,877		2,930		21,561		(15,118)		14,250		8,166		6,084
Total fees and commissions revenue	$	59,704	$	32,361	$	123,050	$	(14,618)	$	200,497	$	77,322	$	123,175

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 six months ended June 30, 2023 (in thousands):

	Commercial		Consumer		Wealth Management		Funds Management & Other		Consolidated		Out of Scope1		In Scope2
Trading revenue	$	—	$	—	$	64,519	$	—	$	64,519	$	64,519	$	—
Customer hedging revenue	19,326		—		(59)		2,729		21,996		21,996		—
Retail brokerage revenue	—		—		7,165		—		7,165		—		7,165
Insurance brokerage revenue	—		—		6,163		—		6,163		—		6,163
Investment banking revenue	7,212		—		10,347		—		17,559		7,050		10,509
Brokerage and trading revenue	26,538		—		88,135		2,729		117,402		93,565		23,837
TransFund EFT network revenue	40,982		1,815		(34)		4		42,767		—		42,767
Merchant services revenue	4,644		18		—		—		4,662		—		4,662
Corporate card revenue	3,619		—		361		215		4,195		—		4,195
Transaction card revenue	49,245		1,833		327		219		51,624		—		51,624
Personal trust revenue	—		—		48,842		—		48,842		—		48,842
Corporate trust revenue	—		—		14,861		—		14,861		—		14,861
Institutional trust & retirement plan services revenue	—		—		26,960		—		26,960		—		26,960
Investment management services and other revenue	—		—		13,013		(22)		12,991		—		12,991
Fiduciary and asset management revenue	—		—		103,676		(22)		103,654		—		103,654
Commercial account service charge revenue	26,235		1,029		965		(2)		28,227		—		28,227
Overdraft fee revenue	57		9,894		62		1		10,014		—		10,014
Check card revenue	—		11,614		—		—		11,614		—		11,614
Automated service charge and other deposit fee revenue	504		2,546		162		1		3,213		—		3,213
Deposit service charges and fees	26,796		25,083		1,189		—		53,068		—		53,068
Mortgage production revenue	—		(917)		—		—		(917)		(917)		—
Mortgage servicing revenue	—		31,551		—		(1,126)		30,425		30,425		—
Mortgage banking revenue	—		30,634		—		(1,126)		29,508		29,508		—
Other revenue	12,960		5,392		38,634		(25,766)		31,220		16,727		14,493
Total fees and commissions revenue	$	115,539	$	62,942	$	231,961	$	(23,966)	$	386,476	$	139,800	$	246,676

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.

XML

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

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 June 30, 2024 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Trading securities:
U.S. government securities	$	71,169	$	69,955	$	1,214	$	—
Residential agency mortgage-backed securities	5,023,892		—		5,023,892		—
Municipal securities	56,780		—		56,780		—
Other trading securities	60,950		—		60,950		—
Total trading securities	5,212,791		69,955		5,142,836		—
Available for sale securities:
U.S. Treasury	923		923		—		—
Municipal securities	278,043		—		278,043		—
Residential agency mortgage-backed securities	8,108,567		—		8,108,567		—
Residential non-agency mortgage-backed securities	828,049		—		828,049		—
Commercial agency mortgage-backed securities	3,577,729		—		3,577,729		—
Other debt securities	473		—		—		473
Total available for sale securities	12,793,784		923		12,792,388		473
Fair value option securities — Residential agency mortgage-backed securities	19,050		—		19,050		—
Residential mortgage loans held for sale1	107,465		—		100,364		7,101
Mortgage servicing rights2	333,246		—		—		333,246
Derivative contracts, net of cash collateral3	225,076		3,699		221,377		—
Liabilities:
Derivative contracts, net of cash collateral3	287,509		658		286,851		—

1Residential 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 79.41% of the unpaid principal balance.

2A 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.

3See 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, 2023 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Trading securities:
U.S. government securities	$	10,959	$	9,017	$	1,942	$	—
Residential agency mortgage-backed securities	5,105,137		—		5,105,137		—
Municipal securities	37,413		—		37,413		—
Other trading securities	39,996		—		39,996		—
Total trading securities	5,193,505		9,017		5,184,488		—
Available for sale securities:
U.S. Treasury	925		925		—		—
Municipal securities	502,833		—		502,833		—
Residential agency mortgage-backed securities	6,834,720		—		6,834,720		—
Residential non-agency mortgage-backed securities	799,877		—		799,877		—
Commercial agency mortgage-backed securities	4,147,853		—		4,147,853		—
Other debt securities	473		—		—		473
Total available for sale securities	12,286,681		925		12,285,283		473
Fair value option securities — Residential agency mortgage-backed securities	20,671		—		20,671		—
Residential mortgage loans held for sale1	56,935		—		49,749		7,186
Mortgage servicing rights2	293,884		—		—		293,884
Derivative contracts, net of cash collateral3	410,304		—		410,304		—
Liabilities:
Derivative contracts, net of cash collateral3	587,473		2,607		584,866		—

1Residential 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 77.74% of the unpaid principal balance.

2A 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.

3See 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 June 30, 2024 for which the fair value was adjusted during the six months ended June 30, 2024 (in thousands):

							Fair Value Adjustments for the
	Carrying Value at June 30, 2024						Three Months Ended June 30, 2024 Recognized in:				Six Months Ended June 30, 2024 Recognized in:
	Quoted Prices in Active Markets for Identical Instruments		Significant Other Observable Inputs		Significant Unobservable Inputs		Gross charge-offs against allowance for loan losses		Other gains (losses), net		Gross charge-offs against allowance for loan losses		Other gains (losses), net
Nonaccruing loans	$	—	$	65	$	10,065	$	6,349	$	—	$	10,033	$	—

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 June 30, 2023 for which the fair value was adjusted during the six months ended June 30, 2023 (in thousands):

							Fair Value Adjustments for the
	Carrying Value at June 30, 2023						Three Months Ended June 30, 2023 Recognized in:				Six Months Ended June 30, 2023 Recognized in:
	Quoted Prices in Active Markets for Identical Instruments		Significant Other Observable Inputs		Significant Unobservable Inputs		Gross charge-offs against allowance for loan losses		Other gains (losses), net		Gross charge-offs against allowance for loan losses		Other gains (losses), net
Nonaccruing loans	$	—	$	—	$	12,048	$	6,797	$	—	$	8,787	$	—
Real estate and other repossessed assets	—		547		—		—		—		—		(101)

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 June 30, 2024 follows (dollars in thousands):

	Fair Value		Valuation Technique(s)	Unobservable Input	Range (Weighted Average)
Nonaccruing loans	$	10,065	Discounted cash flows	Management knowledge of industry and non-real estate collateral	4% - 90% (45%)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 June 30, 2023 follows (dollars in thousands):

	Fair Value		Valuation Technique(s)	Unobservable Input	Range (Weighted Average)
Nonaccruing loans	$	12,048	Discounted cash flows	Management knowledge of industry and non-real estate collateral	44% - 62% (58%)1

1    Represents fair value as a percentage of the unpaid principal balance.

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 June 30, 2024 (in thousands):

	Carrying Value		Estimated Fair Value		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and due from banks	$	897,811	$	897,811	$	897,811	$	—	$	—
Interest-bearing cash and cash equivalents	178,352		178,352		178,352		—		—
Trading securities:
U.S. government securities	71,169		71,169		69,955		1,214		—
Residential agency mortgage-backed securities	5,023,892		5,023,892		—		5,023,892		—
Municipal securities	56,780		56,780		—		56,780		—
Other trading securities	60,950		60,950		—		60,950		—
Total trading securities	5,212,791		5,212,791		69,955		5,142,836		—
Investment securities:
Municipal securities	107,188		109,700		—		11,989		97,711
Residential agency mortgage-backed securities	1,990,626		1,786,096		—		1,786,096		—
Commercial agency mortgage-backed securities	16,066		15,030		—		15,030		—
Other debt securities	15,288		13,706		—		13,706		—
Total investment securities	2,129,168		1,924,532		—		1,826,821		97,711
Allowance for credit losses	(287)		—		—		—		—
Investment securities, net of allowance	2,128,881		1,924,532		—		1,826,821		97,711
Available for sale securities:
U.S. Treasury	923		923		923		—		—
Municipal securities	278,043		278,043		—		278,043		—
Residential agency mortgage-backed securities	8,108,567		8,108,567		—		8,108,567		—
Residential non-agency mortgage-backed securities	828,049		828,049		—		828,049		—
Commercial agency mortgage-backed securities	3,577,729		3,577,729		—		3,577,729		—
Other debt securities	473		473		—		—		473
Total available for sale securities	12,793,784		12,793,784		923		12,792,388		473
Fair value option securities — Residential agency mortgage-backed securities	19,050		19,050		—		19,050		—
Residential mortgage loans held for sale	107,465		107,465		—		100,364		7,101
Loans:
Commercial	15,623,409		15,594,663		—		—		15,594,663
Commercial real estate	5,083,575		4,988,792		—		—		4,988,792
Loans to individuals	3,846,597		3,712,068		—		—		3,712,068
Total loans	24,553,581		24,295,523		—		—		24,295,523
Allowance for loan losses	(287,826)		—		—		—		—
Loans, net of allowance	24,265,755		24,295,523		—		—		24,295,523
Mortgage servicing rights	333,246		333,246		—		—		333,246
Derivative instruments with positive fair value, net of cash collateral	225,076		225,076		3,699		221,377		—
Deposits with no stated maturity	32,777,709		32,777,709		—		32,777,709		—
Time deposits	3,463,935		3,439,777		—		—		3,439,777
Other borrowed funds	7,342,296		7,342,295		—		—		7,342,295
Subordinated debentures	131,156		119,428		—		119,428		—
Derivative instruments with negative fair value, net of cash collateral	287,509		287,509		658		286,851		—

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, 2023 (in thousands):

	Carrying Value		Estimated Fair Value		Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and due from banks	$	947,613	$	947,613	$	947,613	$	—	$	—
Interest-bearing cash and cash equivalents	400,652		400,652		400,652		—		—
Trading securities:
U.S. government securities	10,959		10,959		9,017		1,942		—
Residential agency mortgage-backed securities	5,105,137		5,105,137		—		5,105,137		—
Municipal securities	37,413		37,413		—		37,413		—
Other trading securities	39,996		39,996		—		39,996		—
Total trading securities	5,193,505		5,193,505		9,017		5,184,488		—
Investment securities:
Municipal securities	120,705		125,525		—		12,305		113,220
Residential agency mortgage-backed securities	2,092,083		1,917,810		—		1,917,810		—
Commercial agency mortgage-backed securities	15,914		15,067		—		15,067		—
Other debt securities	15,787		14,184		—		14,184		—
Total investment securities	2,244,489		2,072,586		—		1,959,366		113,220
Allowance for credit losses	(336)		—		—		—		—
Investment securities, net of allowance	2,244,153		2,072,586		—		1,959,366		113,220
Available for sale securities:
U.S. Treasury	925		925		925		—		—
Municipal securities	502,833		502,833		—		502,833		—
Residential agency mortgage-backed securities	6,834,720		6,834,720		—		6,834,720		—
Residential non-agency mortgage-backed securities	799,877		799,877		—		799,877		—
Commercial agency mortgage-backed securities	4,147,853		4,147,853		—		4,147,853		—
Other debt securities	473		473		—		—		473
Total available for sale securities	12,286,681		12,286,681		925		12,285,283		473
Fair value option securities — Residential agency mortgage-backed securities	20,671		20,671		—		20,671		—
Residential mortgage loans held for sale	56,935		56,935		—		49,749		7,186
Loans:
Commercial	14,803,769		14,862,873		—		—		14,862,873
Commercial real estate	5,337,647		5,270,657		—		—		5,270,657
Loans to individuals	3,763,552		3,634,855		—		—		3,634,855
Total loans	23,904,968		23,768,385		—		—		23,768,385
Allowance for loan losses	(277,123)		—		—		—		—
Loans, net of allowance	23,627,845		23,768,385		—		—		23,768,385
Mortgage servicing rights	293,884		293,884		—		—		293,884
Derivative instruments with positive fair value, net of cash collateral	410,304		410,304		—		410,304		—
Deposits with no stated maturity	31,007,679		31,007,679		—		—		31,007,679
Time deposits	3,012,022		2,993,685		—		—		2,993,685
Other borrowed funds	8,824,300		8,824,299		—		—		8,824,299
Subordinated debentures	131,150		115,798		—		115,798		—
Derivative instruments with negative fair value, net of cash collateral	587,473		587,473		2,607		584,866		—

XML

Significant Accounting Policies Loans and Allowance for Credit Losses (Details)	6 Months Ended
	Jun. 30, 2024
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

XML

Trading Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	$ 5,212,791	$ 5,193,505
Trading Securities, Net Unrealized Gain (Loss)	6,010	98,635
U.S. government securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	71,169	10,959
Trading Securities, Net Unrealized Gain (Loss)	33	28
Residential agency mortgage-backed securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	5,023,892	5,105,137
Trading Securities, Net Unrealized Gain (Loss)	5,742	98,124
Municipal securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	56,780	37,413
Trading Securities, Net Unrealized Gain (Loss)	152	323
Other trading securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	60,950	39,996
Trading Securities, Net Unrealized Gain (Loss)	$ 83	$ 160

XML

Investment (Held-to-Maturity) Securities (Details) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2024 USD ($)		Jun. 30, 2024 USD ($)		Dec. 31, 2023 USD ($)
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		$ 2,269,560		$ 2,269,560		$ 2,409,090
Investment Securities, Gross Carrying Value		2,129,168	[1]	2,129,168	[1]	2,244,489	[2]
Investment securities, Allowance for Credit Loss		(287)	[1]	(287)	[1]	(336)	[2]
Investment Securities, Amortized Cost, After Allowance for Credit Loss		2,269,273		2,269,273		2,408,754
Investment Securities, Carrying Value, after Allowance for Credit Loss		2,128,881	[1]	2,128,881	[1]	2,244,153	[2]
Investment Securities, Fair Value		1,924,532		1,924,532		2,072,586
Investment Securities, Gross Unrealized Gain		3,067		3,067		5,139
Investment Securities, Gross Unrealized Loss		$ (207,703)		(207,703)		(177,042)
Debt Securities, Net Unrealized Loss Remaining in AOCI included in Carrying Value for AFS Securities Transferred to Investment Securities				$ (140,000)		$ (165,000)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		146		146		134
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 16,795		$ 16,795		$ 1,931
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		1,816,520		1,816,520		1,947,071
Investment Securities, Continuous Unrealized Loss Position, Fair Value		1,833,315		1,833,315		1,949,002
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		150		150		5
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		207,553		207,553		177,037
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		207,703		207,703		177,042
Fixed Maturity Securities [Member]
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
Investment Securities, Debt Maturities, Less than One Year, Net Carrying Value		18,247		18,247
Investment Securities, Debt Maturities, One to Five Years, Net Carrying Value		101,521		101,521
Investment Securities, Debt Maturities, Six to Ten Years, Net Carrying Value		18,761		18,761
Investment Securities, Debt Maturities, Over Ten Years, Net Carrying Value		13		13
Investment Securities, Debt Maturities, Single Maturity Date, Net Carrying Value		138,542		138,542
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
Investment Securities, Debt Maturities, Less Than One Year, Fair Value		18,397		18,397
Investment Securities, Debt Maturities, One to Five Years, Fair Value		102,988		102,988
Investment Securities, Debt Maturities, Six to Ten Years, Fair Value		17,038		17,038
Investment Securities, Debt Maturities, Over Ten Years, Fair Value		13		13
Investment Securities, Debt Maturities, Single Maturity Date, Fair Value		$ 138,436		$ 138,436
Investment Securities, Debt Maturities, Weighted Average Maturity	[3]	3.10		3.10
Municipal securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		$ 107,188		$ 107,188		120,705
Investment Securities, Gross Carrying Value		107,188	[1]	107,188	[1]	120,705	[2]
Investment Securities, Fair Value		109,700		109,700		125,525
Investment Securities, Gross Unrealized Gain		2,976		2,976		5,014
Investment Securities, Gross Unrealized Loss		$ (464)		$ (464)		$ (194)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		25		25		13
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 16,795		$ 16,795		$ 1,931
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		7,679		7,679		6,600
Investment Securities, Continuous Unrealized Loss Position, Fair Value		24,474		24,474		8,531
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		150		150		5
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		314		314		189
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		464		464		194
Residential agency mortgage-backed securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		2,129,826		2,129,826		2,255,340
Investment Securities, Gross Carrying Value		1,990,626	[1]	1,990,626	[1]	2,092,083	[2]
Investment Securities, Fair Value		1,786,096		1,786,096		1,917,810
Investment Securities, Gross Unrealized Gain		91		91		125
Investment Securities, Gross Unrealized Loss		(204,621)		(204,621)		$ (174,398)
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
Investment Securities, Debt Maturities, without Single Maturity Date, Net Carrying Value	[4]	1,990,626		1,990,626
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
Investment Securities, Debt Maturities, without Single Maturity Date, Fair Value		$ 1,786,096		$ 1,786,096
Investment Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities		4 years 10 months 24 days
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		116		116		116
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0		$ 0		$ 0
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		1,785,118		1,785,118		1,916,732
Investment Securities, Continuous Unrealized Loss Position, Fair Value		1,785,118		1,785,118		1,916,732
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0		0		0
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		204,621		204,621		174,398
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		204,621		204,621		174,398
Commercial agency mortgage-backed securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		17,258		17,258		17,258
Investment Securities, Gross Carrying Value		16,066	[1]	16,066	[1]	15,914	[2]
Investment Securities, Fair Value		15,030		15,030		15,067
Investment Securities, Gross Unrealized Gain		0		0		0
Investment Securities, Gross Unrealized Loss		$ (1,036)		$ (1,036)		$ (847)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		2		2		2
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0		$ 0		$ 0
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		15,030		15,030		15,067
Investment Securities, Continuous Unrealized Loss Position, Fair Value		15,030		15,030		15,067
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0		0		0
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		1,036		1,036		847
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		1,036		1,036		847
Other debt securities [Member]
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
Investment Securities, Gross Amortized Cost		15,288		15,288		15,787
Investment Securities, Gross Carrying Value		15,288	[1]	15,288	[1]	15,787	[2]
Investment Securities, Fair Value		13,706		13,706		14,184
Investment Securities, Gross Unrealized Gain		0		0		0
Investment Securities, Gross Unrealized Loss		$ (1,582)		$ (1,582)		$ (1,603)
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		3		3		3
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		$ 0		$ 0		$ 0
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		8,693		8,693		8,672
Investment Securities, Continuous Unrealized Loss Position, Fair Value		8,693		8,693		8,672
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0		0		0
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		1,582		1,582		1,603
Investment Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ 1,582		$ 1,582		$ 1,603

[1] Carrying value includes $140 million of net unrealized loss which remains in 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.

[2] Carrying value includes $165 million of net unrealized loss which remains in 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.

[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 4.9 years based upon current prepayment assumptions.

XML

Available for Sale Securities (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		$ 13,443,020		$ 13,443,020		$ 12,903,305
Available-for-sale Securities, Fair Value		12,793,784		12,793,784		12,286,681
Available-for-sale Securities, Gross Unrealized Gain		23,578		23,578		52,821
Available-for-sale Securities, Gross Unrealized Loss		(672,814)		(672,814)		(669,445)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available-for-sale Securities, Proceeds		1,836	$ 135,489	737,830	$ 135,489
Available-for-sale Securities, Gross realized gains		222	703	455	703
Available-for-sale Securities, Gross realized losses		(188)	(3,713)	(45,592)	(3,713)
Available-for-sale Securities, Related federal and state income tax expense (benefit)		8	$ (708)	(10,616)	$ (708)
Asset Pledged as Collateral with Right
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Pledged Securities		12,600,000		12,600,000		13,900,000
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		415,221		415,221
Available-for-sale Securities, Debt Maturities, One to Five Years, Amortized Cost Basis		2,459,948		2,459,948
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Amortized Cost Basis		852,408		852,408
Available-for-sale Securities, Debt Maturities, Over Ten Years, Amortized Cost Basis		443,805		443,805
Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Amortized Cost		4,171,382		4,171,382
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, Less than One Year, Fair Value		411,548		411,548
Available-for-sale Securities, Debt Maturities, One to Five Years, Fair Value		2,242,456		2,242,456
Available-for-sale Securities, Debt Maturities, Six to Ten Years, Fair Value		780,072		780,072
Available-for-sale Securities, Debt Maturities, Over Ten Years, Fair Value		423,092		423,092
Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Fair Value		$ 3,857,168		$ 3,857,168
Available-for-sale Securities, Debt Maturities, Weighted Average Maturity	[1]	5.08		5.08
U.S. Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		$ 1,000		$ 1,000		1,000
Available-for-sale Securities, Fair Value		923		923		925
Available-for-sale Securities, Gross Unrealized Gain		0		0		0
Available-for-sale Securities, Gross Unrealized Loss		(77)		(77)		(75)
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		301,294		301,294		544,707
Available-for-sale Securities, Fair Value		278,043		278,043		502,833
Available-for-sale Securities, Gross Unrealized Gain		0		0		1
Available-for-sale Securities, Gross Unrealized Loss		(23,251)		(23,251)		(41,875)
Commercial agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		3,868,588		3,868,588		4,456,918
Available-for-sale Securities, Fair Value		3,577,729		3,577,729		4,147,853
Available-for-sale Securities, Gross Unrealized Gain		816		816		2,972
Available-for-sale Securities, Gross Unrealized Loss		(291,675)		(291,675)		(312,037)
Other debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		500		500		500
Available-for-sale Securities, Fair Value		473		473		473
Available-for-sale Securities, Gross Unrealized Gain		0		0		0
Available-for-sale Securities, Gross Unrealized Loss		(27)		(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]	9,271,637		9,271,637
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value		$ 8,936,615		8,936,615
Available-for-sale Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities		4 years 3 months 18 days
Residential agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		$ 8,401,476		8,401,476		7,066,645
Available-for-sale Securities, Fair Value		8,108,567		8,108,567		6,834,720
Available-for-sale Securities, Gross Unrealized Gain		12,321		12,321		36,983
Available-for-sale Securities, Gross Unrealized Loss		(305,230)		(305,230)		(268,908)
Residential non-agency mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Amortized Cost		870,162		870,162		833,535
Available-for-sale Securities, Fair Value		828,049		828,049		799,877
Available-for-sale Securities, Gross Unrealized Gain		10,441		10,441		12,865
Available-for-sale Securities, Gross Unrealized Loss		$ (52,554)		$ (52,554)		$ (46,523)

[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 4.3 years based upon current prepayment assumptions.

XML

Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value (Details) $ in Thousands	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1,206	1,123
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 3,394,198	$ 1,205,822
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	7,577,536	8,087,455
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	10,971,734	9,293,277
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	27,398	7,969
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	645,416	661,476
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 672,814	$ 669,445
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	923	925
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	923	925
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	77	75
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 77	$ 75
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	130	190
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 11,009	$ 6,799
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	257,764	494,955
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	268,773	501,754
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	58	410
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	23,193	41,465
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 23,251	$ 41,875
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	793	630
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 3,033,904	$ 690,118
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,650,900	3,717,975
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	6,684,804	4,408,093
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	24,223	3,689
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	281,007	265,219
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 305,230	$ 268,908
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	41	32
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 166,281	$ 116,077
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	515,977	451,370
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	682,258	567,447
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,108	1,244
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	51,446	45,279
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 52,554	$ 46,523
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	240	269
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 183,004	$ 392,828
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	3,151,499	3,421,757
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	3,334,503	3,814,585
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2,009	2,626
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	289,666	309,411
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 291,675	$ 312,037
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

XML

Securities Fair Value Option Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Option Securities [Line Items]
Fair value option securities, Fair Value	$ 19,050	$ 20,671
Residential agency mortgage-backed securities [Member]
Fair Value Option Securities [Line Items]
Fair value option securities, Fair Value	19,050	20,671
Fair value option securities, Net Unrealized Gain (Loss)	$ (1,805)	$ (1,406)

XML

Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($) $ in Thousands	Jun. 30, 2024		Dec. 31, 2023
Derivative Assets, Fair Value, Net [Abstract]
Derviative contracts, net of cash collateral, Assets, Fair value	$ 225,076		$ 410,304
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Fair Value, Net of Cash Collateral	287,509		587,473
Not Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	36,170,030	[1]	27,348,813	[2]
Derivative Liabilities, Notional	35,270,873	[1]	31,712,601	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	866,846		1,125,034
Derivative Assets, Netting Adjustments	(497,665)		(443,069)
Derivative Assets, Net Fair Value Before Cash Collateral	369,181		681,965
Derivative Assets, Cash Collateral	(144,105)		(271,661)
Derviative contracts, net of cash collateral, Assets, Fair value	225,076		410,304
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	849,760		1,218,900
Derivative Liabilities, Netting Adjustments	(497,665)		(443,069)
Derivative Liabilities, Net Fair Value Before Cash Collateral	352,095		775,831
Derivative Liabilities, Cash Collateral	(64,586)		(188,358)
Derivative Liabilities, Fair Value, Net of Cash Collateral	287,509		587,473
Not Designated as Hedging Instrument [Member] | Total customer risk management programs
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	10,474,223	[1]	10,658,981	[2]
Derivative Liabilities, Notional	10,853,848	[1]	11,066,201	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	776,586		998,792
Derivative Assets, Netting Adjustments	(437,927)		(405,958)
Derivative Assets, Net Fair Value Before Cash Collateral	338,659		592,834
Derivative Assets, Cash Collateral	(142,585)		(264,665)
Derviative contracts, net of cash collateral, Assets, Fair value	196,074		328,169
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	765,071		992,988
Derivative Liabilities, Netting Adjustments	(437,927)		(405,958)
Derivative Liabilities, Net Fair Value Before Cash Collateral	327,144		587,030
Derivative Liabilities, Cash Collateral	(54,041)		(6,441)
Derivative Liabilities, Fair Value, Net of Cash Collateral	273,103		580,589
Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	2,964,667	[1]	2,754,476	[2]
Derivative Liabilities, Notional	2,964,667	[1]	2,754,476	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	109,692		108,450
Derivative Assets, Netting Adjustments	(2,691)		(6,810)
Derivative Assets, Net Fair Value Before Cash Collateral	107,001		101,640
Derivative Assets, Cash Collateral	(103,743)		(94,608)
Derviative contracts, net of cash collateral, Assets, Fair value	3,258		7,032
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	109,685		108,402
Derivative Liabilities, Netting Adjustments	(2,691)		(6,810)
Derivative Liabilities, Net Fair Value Before Cash Collateral	106,994		101,592
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	106,994		101,592
Not Designated as Hedging Instrument [Member] | Energy contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	7,472,357	[1]	7,846,190	[2]
Derivative Liabilities, Notional	7,851,998	[1]	8,254,004	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	631,285		836,425
Derivative Assets, Netting Adjustments	(435,236)		(399,148)
Derivative Assets, Net Fair Value Before Cash Collateral	196,049		437,277
Derivative Assets, Cash Collateral	(38,770)		(169,141)
Derviative contracts, net of cash collateral, Assets, Fair value	157,279		268,136
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	619,809		831,467
Derivative Liabilities, Netting Adjustments	(435,236)		(399,148)
Derivative Liabilities, Net Fair Value Before Cash Collateral	184,573		432,319
Derivative Liabilities, Cash Collateral	(54,007)		(6,441)
Derivative Liabilities, Fair Value, Net of Cash Collateral	130,566		425,878
Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	35,606	[1]	54,999	[2]
Derivative Liabilities, Notional	35,590	[1]	54,405	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	35,451		53,863
Derivative Assets, Netting Adjustments	0		0
Derivative Assets, Net Fair Value Before Cash Collateral	35,451		53,863
Derivative Assets, Cash Collateral	(22)		(872)
Derviative contracts, net of cash collateral, Assets, Fair value	35,429		52,991
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	35,419		53,065
Derivative Liabilities, Netting Adjustments	0		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	35,419		53,065
Derivative Liabilities, Cash Collateral	(34)		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	35,385		53,065
Not Designated as Hedging Instrument [Member] | Equity option contracts [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	1,593	[1]	3,316	[2]
Derivative Liabilities, Notional	1,593	[1]	3,316	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	158		54
Derivative Assets, Netting Adjustments	0		0
Derivative Assets, Net Fair Value Before Cash Collateral	158		54
Derivative Assets, Cash Collateral	(50)		(44)
Derviative contracts, net of cash collateral, Assets, Fair value	108		10
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	158		54
Derivative Liabilities, Netting Adjustments	0		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	158		54
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	158		54
Not Designated as Hedging Instrument [Member] | Trading [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	25,238,831	[1]	16,264,818	[2]
Derivative Liabilities, Notional	24,337,408	[1]	20,644,156	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	82,976		118,545
Derivative Assets, Netting Adjustments	(59,454)		(37,111)
Derivative Assets, Net Fair Value Before Cash Collateral	23,522		81,434
Derivative Assets, Cash Collateral	(1,520)		(6,996)
Derviative contracts, net of cash collateral, Assets, Fair value	22,002		74,438
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	83,121		224,648
Derivative Liabilities, Netting Adjustments	(59,454)		(37,111)
Derivative Liabilities, Net Fair Value Before Cash Collateral	23,667		187,537
Derivative Liabilities, Cash Collateral	(10,545)		(181,917)
Derivative Liabilities, Fair Value, Net of Cash Collateral	13,122		5,620
Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member]
Notional Amount of Derivatives [Abstract]
Derivative Assets, Notional	456,976	[1]	425,014	[2]
Derivative Liabilities, Notional	79,617	[1]	2,244	[2]
Derivative Assets, Fair Value, Net [Abstract]
Derivative Assets, Gross Fair Value	7,284		7,697
Derivative Assets, Netting Adjustments	(284)		0
Derivative Assets, Net Fair Value Before Cash Collateral	7,000		7,697
Derivative Assets, Cash Collateral	0		0
Derviative contracts, net of cash collateral, Assets, Fair value	7,000		7,697
Derivative Liabilities, Fair Value, Net [Abstract]
Derivative Liabilities, Gross Fair Value	1,568		1,264
Derivative Liabilities, Netting Adjustments	(284)		0
Derivative Liabilities, Net Fair Value Before Cash Collateral	1,284		1,264
Derivative Liabilities, Cash Collateral	0		0
Derivative Liabilities, Fair Value, Net of Cash Collateral	$ 1,284		$ 1,264

[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.

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Derivatives, Derivatives Instruments Gain (Loss) in Income Statement (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024		Jun. 30, 2023		Jun. 30, 2024		Jun. 30, 2023
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	$ 39,341		$ 77,814		$ 129,372		$ 23,075
Gain (Loss) on Derivatives, Net	(1,091)		(8,159)		(9,724)		(9,503)
Total customer risk management programs
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	6,765		13,642		13,090		21,996
Gain (Loss) on Derivatives, Net	0		0		0		0
Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	547		2,339		3,007		4,109
Gain (Loss) on Derivatives, Net	0		0		0		0
Energy contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	6,162		11,250		9,977		17,803
Gain (Loss) on Derivatives, Net	0		0		0		0
Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	56		53		106		84
Gain (Loss) on Derivatives, Net	0		0		0		0
Equity option contracts [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	0		0		0		0
Gain (Loss) on Derivatives, Net	0		0		0		0
Trading [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	32,576	[1]	64,172	[1]	116,282	[2]	1,079	[2]
Gain (Loss) on Derivatives, Net	0	[1]	0	[1]	0	[2]	0	[2]
Internal risk management programs [Member]
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
Brokergage and Trading Revenue	0		0		0		0
Gain (Loss) on Derivatives, Net	$ (1,091)		$ (8,159)		$ (9,724)		$ (9,503)

[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.

[2] 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.

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Loans and Allowance for Credit Losses, Loans by Portfolio Type (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	$ 6,788,786	$ 6,633,234
Loans, variable rate of interest	17,674,112	17,126,265
Loans, non-accrual	90,683	145,469
Total	24,553,581	23,904,968
Credit Commitments [Abstract]
Outstanding commitments to extend credit	14,100,000
Outstanding standby letters of credit	737,000
Commercial [Member]
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	3,604,024	3,558,563
Loans, variable rate of interest	11,960,951	11,135,075
Loans, non-accrual	58,434	110,131
Total	15,623,409	14,803,769
Commercial real estate [Member]
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	756,055	791,757
Loans, variable rate of interest	4,314,637	4,538,570
Loans, non-accrual	12,883	7,320
Total	5,083,575	5,337,647
Loans to individuals [Member]
Loan receivables disclosure [Abstract]
Loans, fixed rate of interest	2,428,707	2,282,914
Loans, variable rate of interest	1,398,524	1,452,620
Loans, non-accrual	19,366	28,018
Total	$ 3,846,597	$ 3,763,552

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Loans and Allowances for Credit Losses, Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 281,623	$ 249,460	$ 277,123	$ 235,704	$ 235,704
Provision for loan losses	13,148	19,957	23,108	34,482
Loans charged off	(7,940)	(8,049)	(15,000)	(11,716)
Recoveries of loans previously charged off	995	1,346	2,595	4,244
Ending balance	287,826	262,714	287,826	262,714	277,123
Provision Details [Abstract]
Provision for credit losses	8,000	17,000	16,000	33,000
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	47,319	62,943	48,977	60,919	60,919
Provision for off-balance sheet credit risk	(4,983)	(3,003)	(6,641)	(979)
Ending balance	42,336	59,940	42,336	59,940	48,977
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	24,462,898		24,462,898		23,759,499
Individually measured for impairment, recorded investment	90,683		90,683		145,469
Total	24,553,581		24,553,581		23,904,968
Related allowance [Abstract]
Collectively measured for impairment, related allowance	285,612		285,612		274,431
Individually measured for impairment, related allowance	2,214		2,214		2,692
Total	287,826		287,826		277,123
Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	146,267	139,898	141,232	131,586	131,586
Provision for loan losses	10,441	5,420	18,752	11,750
Loans charged off	(6,391)	(2,797)	(10,631)	(2,809)
Recoveries of loans previously charged off	420	748	1,384	2,742
Ending balance	150,737	143,269	150,737	143,269	141,232
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	17,790	20,608	19,762	18,246	18,246
Provision for off-balance sheet credit risk	(474)	(314)	(2,446)	2,048
Ending balance	17,316	20,294	17,316	20,294	19,762
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	15,564,975		15,564,975		14,693,638
Individually measured for impairment, recorded investment	58,434		58,434		110,131
Total	15,623,409		15,623,409		14,803,769
Related allowance [Abstract]
Collectively measured for impairment, related allowance	148,523		148,523		138,540
Individually measured for impairment, related allowance	2,214		2,214		2,692
Total	150,737		150,737		141,232
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	97,479	66,003	94,718	57,648	57,648
Provision for loan losses	(1,042)	14,300	2,953	24,726
Loans charged off	(205)	(4,000)	(1,455)	(6,208)	(8,446)
Recoveries of loans previously charged off	24	44	40	181
Ending balance	96,256	76,347	96,256	76,347	94,718
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	27,865	40,211	27,439	40,490	40,490
Provision for off-balance sheet credit risk	(4,551)	(2,530)	(4,125)	(2,809)
Ending balance	23,314	37,681	23,314	37,681	27,439
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	5,070,692		5,070,692		5,330,327
Individually measured for impairment, recorded investment	12,883		12,883		7,320
Total	5,083,575		5,083,575		5,337,647
Related allowance [Abstract]
Collectively measured for impairment, related allowance	96,256		96,256		94,718
Individually measured for impairment, related allowance	0		0		0
Total	96,256		96,256		94,718
Loans to individuals [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	37,877	43,559	41,173	46,470	46,470
Provision for loan losses	3,749	237	1,403	(1,994)
Loans charged off	(1,344)	(1,252)	(2,914)	(2,699)
Recoveries of loans previously charged off	551	554	1,171	1,321
Ending balance	40,833	43,098	40,833	43,098	41,173
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	1,664	2,124	1,776	2,183	2,183
Provision for off-balance sheet credit risk	42	(159)	(70)	(218)
Ending balance	1,706	$ 1,965	1,706	$ 1,965	1,776
Recorded investment [Abstract]
Collectively measured for impairment, recorded investment	3,827,231		3,827,231		3,735,534
Individually measured for impairment, recorded investment	19,366		19,366		28,018
Total	3,846,597		3,846,597		3,763,552
Related allowance [Abstract]
Collectively measured for impairment, related allowance	40,833		40,833		41,173
Individually measured for impairment, related allowance	0		0		0
Total	$ 40,833		$ 40,833		$ 41,173

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Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended			12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024		Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	$ 1,645,484		$ 1,645,484			$ 3,743,425
Financing Receivable, Originated, Year Two	3,255,884		3,255,884			4,522,989
Financing Receivable, Originated, Year Three	4,579,148		4,579,148			2,982,784
Financing Receivable, Originated, Year Four	2,564,100		2,564,100			1,756,064
Financing Receivable, Originated, Year Five	1,580,174		1,580,174			1,234,871
Financing Receivable, Originated, More Than Five Years	3,784,391		3,784,391			3,094,093
Financing Receivable, Revolving	7,119,548		7,119,548			6,543,149
Financing Receivable, Revolving, Converted to Term Loan	24,852		24,852			27,593
Total	24,553,581		24,553,581			23,904,968
Financing Receivable, Allowance for Credit Loss, Writeoff	7,940	$ 8,049	15,000		$ 11,716
Commercial [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	1,207,596		1,207,596			2,698,113
Financing Receivable, Originated, Year Two	2,244,930		2,244,930			2,026,636
Financing Receivable, Originated, Year Three	1,979,131		1,979,131			1,293,089
Financing Receivable, Originated, Year Four	1,145,245		1,145,245			846,923
Financing Receivable, Originated, Year Five	788,661		788,661			576,627
Financing Receivable, Originated, More Than Five Years	2,156,445		2,156,445			1,839,613
Financing Receivable, Revolving	6,098,312		6,098,312			5,519,976
Financing Receivable, Revolving, Converted to Term Loan	3,089		3,089			2,792
Total	15,623,409		15,623,409			14,803,769
Financing Receivable, Allowance for Credit Loss, Writeoff	6,391	2,797	10,631		2,809
Commercial [Member] | Healthcare [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	275,268		275,268			650,768
Financing Receivable Year One Originated Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Two	641,656		641,656			897,730
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Three	954,097		954,097			609,244
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Four	585,118		585,118			467,993
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Five	437,772		437,772			355,026
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			0			2,500
Financing Receivable, Originated, More Than Five Years	1,072,841		1,072,841			880,099
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			6,840			0
Financing Receivable, Revolving	264,294		264,294			282,358
Financing Receivable Revolving Writeoff			0			0
Financing Receivable, Revolving, Converted to Term Loan	12		12			15
Financing Receivable Revolving Converted to Term Writeoff			0			0
Total	4,231,058		4,231,058			4,143,233
Financing Receivable, Allowance for Credit Loss, Writeoff			6,840			2,500
Commercial [Member] | Services [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	330,400		330,400			900,090
Financing Receivable Year One Originated Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Two	737,760		737,760			541,573
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Three	525,464		525,464			405,205
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			0			3,060
Financing Receivable, Originated, Year Four	352,415		352,415			230,823
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Five	213,057		213,057			110,618
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			10			0
Financing Receivable, Originated, More Than Five Years	708,450		708,450			651,745
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Revolving	708,420		708,420			735,561
Financing Receivable Revolving Writeoff			9			2,642
Financing Receivable, Revolving, Converted to Term Loan	1,178		1,178			608
Financing Receivable Revolving Converted to Term Writeoff			0			0
Total	3,577,144		3,577,144			3,576,223
Financing Receivable, Allowance for Credit Loss, Writeoff			19			5,702
Commercial [Member] | Energy [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	55,874		55,874			190,122
Financing Receivable Year One Originated Current Fiscal Year Writeoff			0
Financing Receivable, Originated, Year Two	103,305		103,305			100,006
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			0
Financing Receivable, Originated, Year Three	78,634		78,634			43,769
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			0
Financing Receivable, Originated, Year Four	2,707		2,707			7,876
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			0
Financing Receivable, Originated, Year Five	7,288		7,288			9,562
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			0
Financing Receivable, Originated, More Than Five Years	20,220		20,220			11,682
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			0
Financing Receivable, Revolving	3,183,457		3,183,457			3,074,084
Financing Receivable Revolving Writeoff			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Financing Receivable Revolving Converted to Term Writeoff			0
Total	3,451,485		3,451,485			3,437,101
Financing Receivable, Allowance for Credit Loss, Writeoff			0
Commercial [Member] | General business [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	546,054		546,054			957,133
Financing Receivable Year One Originated Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Two	762,209		762,209			487,327
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			27			0
Financing Receivable, Originated, Year Three	420,936		420,936			234,871
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			1,399			4,598
Financing Receivable, Originated, Year Four	205,005		205,005			140,231
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			0			2
Financing Receivable, Originated, Year Five	130,544		130,544			101,421
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, More Than Five Years	354,934		354,934			296,087
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			158			48
Financing Receivable, Revolving	1,942,141		1,942,141			1,427,973
Financing Receivable Revolving Writeoff			2,182			10
Financing Receivable, Revolving, Converted to Term Loan	1,899		1,899			2,169
Financing Receivable Revolving Converted to Term Writeoff			6			38
Total	4,363,722		4,363,722			3,647,212
Financing Receivable, Allowance for Credit Loss, Writeoff			3,772			4,696
Commercial real estate [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	39,377		39,377			399,883
Financing Receivable Year One Originated Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Two	452,689		452,689			1,942,389
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Three	2,099,889		2,099,889			1,194,762
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Four	951,257		951,257			416,647
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Five	343,462		343,462			520,725
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, More Than Five Years	1,060,114		1,060,114			727,146
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			1,455			8,446
Financing Receivable, Revolving	136,787		136,787			136,095
Financing Receivable Revolving Writeoff			0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Financing Receivable Revolving Converted to Term Writeoff			0			0
Total	5,083,575		5,083,575			5,337,647
Financing Receivable, Allowance for Credit Loss, Writeoff	205	4,000	1,455		6,208	8,446
Loans to individuals [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	398,511		398,511			645,429
Financing Receivable, Originated, Year Two	558,265		558,265			553,964
Financing Receivable, Originated, Year Three	500,128		500,128			494,933
Financing Receivable, Originated, Year Four	467,598		467,598			492,494
Financing Receivable, Originated, Year Five	448,051		448,051			137,519
Financing Receivable, Originated, More Than Five Years	567,832		567,832			527,334
Financing Receivable, Revolving	884,449		884,449			887,078
Financing Receivable, Revolving, Converted to Term Loan	21,763		21,763			24,801
Total	3,846,597		3,846,597			3,763,552
Financing Receivable, Allowance for Credit Loss, Writeoff	1,344	$ 1,252	2,914		$ 2,699
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	249,631		249,631			426,325
Financing Receivable Year One Originated Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Two	377,259		377,259			322,442
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, Year Three	309,136		309,136			343,295
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			0			51
Financing Receivable, Originated, Year Four	331,409		331,409			351,647
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			0			4
Financing Receivable, Originated, Year Five	332,949		332,949			55,200
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			0			0
Financing Receivable, Originated, More Than Five Years	275,921		275,921			255,920
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			5			17
Financing Receivable, Revolving	383,250		383,250			381,158
Financing Receivable Revolving Writeoff			9			0
Financing Receivable, Revolving, Converted to Term Loan	21,671		21,671			24,653
Financing Receivable Revolving Converted to Term Writeoff			0			1
Total	2,281,226		2,281,226			2,160,640
Financing Receivable, Allowance for Credit Loss, Writeoff			14			73
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		0			633
Financing Receivable, Originated, Year Two	893		893			1,788
Financing Receivable, Originated, Year Three	3,466		3,466			2,220
Financing Receivable, Originated, Year Four	2,727		2,727			4,577
Financing Receivable, Originated, Year Five	4,262		4,262			6,816
Financing Receivable, Originated, More Than Five Years	120,477		120,477			133,773
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	131,825		131,825			149,807
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	148,880		148,880			218,471
Financing Receivable Year One Originated Current Fiscal Year Writeoff			2,732	[1]		5,636	[2]
Financing Receivable, Originated, Year Two	180,113		180,113			229,734
Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff			51	[1]		82	[2]
Financing Receivable, Originated, Year Three	187,526		187,526			149,418
Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff			45	[1]		96	[2]
Financing Receivable, Originated, Year Four	133,462		133,462			136,270
Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff			26	[1]		43	[2]
Financing Receivable, Originated, Year Five	110,840		110,840			75,503
Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff			0	[1]		0	[2]
Financing Receivable, Originated, More Than Five Years	171,434		171,434			137,641
Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff			0	[1]		10	[2]
Financing Receivable, Revolving	501,199		501,199			505,920
Financing Receivable Revolving Writeoff			26	[1]		6	[2]
Financing Receivable, Revolving, Converted to Term Loan	92		92			148
Financing Receivable Revolving Converted to Term Writeoff			20	[1]		26	[2]
Total	1,433,546		1,433,546			1,453,105
Financing Receivable, Allowance for Credit Loss, Writeoff			2,900	[1]		5,899	[2]
Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	275,268		275,268			650,768
Financing Receivable, Originated, Year Two	625,281		625,281			895,602
Financing Receivable, Originated, Year Three	921,843		921,843			590,736
Financing Receivable, Originated, Year Four	565,653		565,653			409,001
Financing Receivable, Originated, Year Five	379,669		379,669			331,897
Financing Receivable, Originated, More Than Five Years	992,889		992,889			809,858
Financing Receivable, Revolving	262,814		262,814			281,378
Financing Receivable, Revolving, Converted to Term Loan	12		12			15
Total	4,023,429		4,023,429			3,969,255
Performing [Member] | Commercial [Member] | Healthcare [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	15,000		15,000			0
Financing Receivable, Originated, Year Three	31,907		31,907			0
Financing Receivable, Originated, Year Four	1,178		1,178			21,791
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	49,823		49,823			31,235
Financing Receivable, Revolving	505		505			5
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	98,413		98,413			53,031
Performing [Member] | Commercial [Member] | Healthcare [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	0		0			2,128
Financing Receivable, Originated, Year Three	110		110			18,508
Financing Receivable, Originated, Year Four	18,287		18,287			6,911
Financing Receivable, Originated, Year Five	58,103		58,103			0
Financing Receivable, Originated, More Than Five Years	10,896		10,896			10,896
Financing Receivable, Revolving	975		975			975
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	88,371		88,371			39,418
Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	330,400		330,400			900,090
Financing Receivable, Originated, Year Two	735,946		735,946			526,776
Financing Receivable, Originated, Year Three	506,992		506,992			401,872
Financing Receivable, Originated, Year Four	350,009		350,009			228,818
Financing Receivable, Originated, Year Five	211,087		211,087			106,112
Financing Receivable, Originated, More Than Five Years	691,191		691,191			643,477
Financing Receivable, Revolving	704,785		704,785			730,729
Financing Receivable, Revolving, Converted to Term Loan	459		459			595
Total	3,530,869		3,530,869			3,538,469
Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	1,814		1,814			1,085
Financing Receivable, Originated, Year Three	1,035		1,035			1,520
Financing Receivable, Originated, Year Four	898		898			1,341
Financing Receivable, Originated, Year Five	0		0			534
Financing Receivable, Originated, More Than Five Years	8,330		8,330			4,522
Financing Receivable, Revolving	1,758		1,758			81
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	13,835		13,835			9,083
Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	0		0			13,712
Financing Receivable, Originated, Year Three	17,437		17,437			178
Financing Receivable, Originated, Year Four	147		147			326
Financing Receivable, Originated, Year Five	1,607		1,607			3,972
Financing Receivable, Originated, More Than Five Years	8,929		8,929			3,746
Financing Receivable, Revolving	436		436			3,108
Financing Receivable, Revolving, Converted to Term Loan	719		719			13
Total	29,275		29,275			25,055
Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	55,874		55,874			190,122
Financing Receivable, Originated, Year Two	103,305		103,305			100,006
Financing Receivable, Originated, Year Three	78,634		78,634			43,769
Financing Receivable, Originated, Year Four	2,707		2,707			7,876
Financing Receivable, Originated, Year Five	7,288		7,288			9,562
Financing Receivable, Originated, More Than Five Years	20,140		20,140			11,583
Financing Receivable, Revolving	3,123,257		3,123,257			3,025,590
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	3,391,205		3,391,205			3,388,508
Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	0		0			0
Financing Receivable, Originated, Year Three	0		0			0
Financing Receivable, Originated, Year Four	0		0			0
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	0		0			0
Financing Receivable, Revolving	17,662		17,662			13,950
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	17,662		17,662			13,950
Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	0		0			0
Financing Receivable, Originated, Year Three	0		0			0
Financing Receivable, Originated, Year Four	0		0			0
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	0		0			0
Financing Receivable, Revolving	13,950		13,950			16,800
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	13,950		13,950			16,800
Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	543,566		543,566			942,468
Financing Receivable, Originated, Year Two	741,365		741,365			436,832
Financing Receivable, Originated, Year Three	376,769		376,769			224,735
Financing Receivable, Originated, Year Four	191,698		191,698			138,951
Financing Receivable, Originated, Year Five	128,816		128,816			101,100
Financing Receivable, Originated, More Than Five Years	346,596		346,596			287,744
Financing Receivable, Revolving	1,918,875		1,918,875			1,389,128
Financing Receivable, Revolving, Converted to Term Loan	1,733		1,733			2,164
Total	4,249,418		4,249,418			3,523,122
Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	2,488		2,488			10,264
Financing Receivable, Originated, Year Two	15,760		15,760			16,167
Financing Receivable, Originated, Year Three	5,201		5,201			8,420
Financing Receivable, Originated, Year Four	11,765		11,765			1,253
Financing Receivable, Originated, Year Five	535		535			321
Financing Receivable, Originated, More Than Five Years	1,764		1,764			8,295
Financing Receivable, Revolving	9,307		9,307			897
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	46,820		46,820			45,617
Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			4,401
Financing Receivable, Originated, Year Two	4,090		4,090			33,194
Financing Receivable, Originated, Year Three	38,900		38,900			1,716
Financing Receivable, Originated, Year Four	1,542		1,542			27
Financing Receivable, Originated, Year Five	1,193		1,193			0
Financing Receivable, Originated, More Than Five Years	6,539		6,539			0
Financing Receivable, Revolving	9,301		9,301			31,992
Financing Receivable, Revolving, Converted to Term Loan	163		163			0
Total	61,728		61,728			71,330
Performing [Member] | Commercial real estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	39,377		39,377			396,891
Financing Receivable, Originated, Year Two	449,401		449,401			1,941,913
Financing Receivable, Originated, Year Three	2,084,982		2,084,982			1,194,759
Financing Receivable, Originated, Year Four	919,126		919,126			416,647
Financing Receivable, Originated, Year Five	343,462		343,462			513,555
Financing Receivable, Originated, More Than Five Years	1,025,082		1,025,082			705,092
Financing Receivable, Revolving	136,787		136,787			136,095
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	4,998,217		4,998,217			5,304,952
Performing [Member] | Commercial real estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			0
Financing Receivable, Originated, Year Two	403		403			476
Financing Receivable, Originated, Year Three	14,907		14,907			0
Financing Receivable, Originated, Year Four	32,131		32,131			0
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	16,949		16,949			19,171
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	64,390		64,390			19,647
Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	0		0			2,992
Financing Receivable, Originated, Year Two	0		0			0
Financing Receivable, Originated, Year Three	0		0			3
Financing Receivable, Originated, Year Four	0		0			0
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	8,085		8,085			2,733
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	8,085		8,085			5,728
Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	249,631		249,631			426,089
Financing Receivable, Originated, Year Two	377,061		377,061			320,733
Financing Receivable, Originated, Year Three	308,510		308,510			342,927
Financing Receivable, Originated, Year Four	330,796		330,796			349,742
Financing Receivable, Originated, Year Five	332,439		332,439			54,801
Financing Receivable, Originated, More Than Five Years	267,548		267,548			243,356
Financing Receivable, Revolving	378,185		378,185			375,739
Financing Receivable, Revolving, Converted to Term Loan	21,123		21,123			23,895
Total	2,265,293		2,265,293			2,137,282
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			157
Financing Receivable, Originated, Year Two	42		42			140
Financing Receivable, Originated, Year Three	193		193			131
Financing Receivable, Originated, Year Four	176		176			1,361
Financing Receivable, Originated, Year Five	0		0			18
Financing Receivable, Originated, More Than Five Years	155		155			134
Financing Receivable, Revolving	1,575		1,575			2,982
Financing Receivable, Revolving, Converted to Term Loan	0		0			93
Total	2,141		2,141			5,016
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			0
Financing Receivable, Originated, Year Two	49		49			150
Financing Receivable, Originated, Year Three	0		0			0
Financing Receivable, Originated, Year Four	3		3			0
Financing Receivable, Originated, Year Five	0		0			37
Financing Receivable, Originated, More Than Five Years	0		0			49
Financing Receivable, Revolving	1,113		1,113			50
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	1,165		1,165			286
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		0			633
Financing Receivable, Originated, Year Two	893		893			1,788
Financing Receivable, Originated, Year Three	3,466		3,466			2,220
Financing Receivable, Originated, Year Four	2,727		2,727			4,297
Financing Receivable, Originated, Year Five	3,982		3,982			6,441
Financing Receivable, Originated, More Than Five Years	114,140		114,140			124,719
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	125,208		125,208			140,098
Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator Line Items [Abstract]
Financing Receivable, Originated, Year One	148,880		148,880			218,401
Financing Receivable, Originated, Year Two	180,029		180,029			229,580
Financing Receivable, Originated, Year Three	187,435		187,435			149,291
Financing Receivable, Originated, Year Four	133,383		133,383			136,215
Financing Receivable, Originated, Year Five	110,809		110,809			75,348
Financing Receivable, Originated, More Than Five Years	171,280		171,280			137,629
Financing Receivable, Revolving	499,184		499,184			503,841
Financing Receivable, Revolving, Converted to Term Loan	92		92			145
Total	1,431,092		1,431,092			1,450,450
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		0			66
Financing Receivable, Originated, Year Two	28		28			39
Financing Receivable, Originated, Year Three	35		35			106
Financing Receivable, Originated, Year Four	65		65			30
Financing Receivable, Originated, Year Five	15		15			8
Financing Receivable, Originated, More Than Five Years	2		2			0
Financing Receivable, Revolving	1		1			1,918
Financing Receivable, Revolving, Converted to Term Loan	0		0			3
Total	146		146			2,170
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			0
Financing Receivable, Originated, Year Two	30		30			64
Financing Receivable, Originated, Year Three	12		12			12
Financing Receivable, Originated, Year Four	3		3			9
Financing Receivable, Originated, Year Five	7		7			144
Financing Receivable, Originated, More Than Five Years	144		144			0
Financing Receivable, Revolving	1,990		1,990			3
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	2,186		2,186			232
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			0
Financing Receivable, Originated, Year Two	1,375		1,375			0
Financing Receivable, Originated, Year Three	237		237			0
Financing Receivable, Originated, Year Four	0		0			30,290
Financing Receivable, Originated, Year Five	0		0			23,129
Financing Receivable, Originated, More Than Five Years	19,233		19,233			28,110
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	20,845		20,845			81,529
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			0
Financing Receivable, Originated, Year Two	0		0			0
Financing Receivable, Originated, Year Three	0		0			1,635
Financing Receivable, Originated, Year Four	1,361		1,361			338
Financing Receivable, Originated, Year Five	363		363			0
Financing Receivable, Originated, More Than Five Years	0		0			0
Financing Receivable, Revolving	1,441		1,441			1,643
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	3,165		3,165			3,616
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			0
Financing Receivable, Originated, Year Two	0		0			0
Financing Receivable, Originated, Year Three	0		0			0
Financing Receivable, Originated, Year Four	0		0			0
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	80		80			99
Financing Receivable, Revolving	28,588		28,588			17,744
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	28,668		28,668			17,843
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			0
Financing Receivable, Originated, Year Two	994		994			1,134
Financing Receivable, Originated, Year Three	66		66			0
Financing Receivable, Originated, Year Four	0		0			0
Financing Receivable, Originated, Year Five	0		0			0
Financing Receivable, Originated, More Than Five Years	35		35			48
Financing Receivable, Revolving	4,658		4,658			5,956
Financing Receivable, Revolving, Converted to Term Loan	3		3			5
Total	5,756		5,756			7,143
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			0
Financing Receivable, Originated, Year Two	2,885		2,885			0
Financing Receivable, Originated, Year Three	0		0			0
Financing Receivable, Originated, Year Four	0		0			0
Financing Receivable, Originated, Year Five	0		0			7,170
Financing Receivable, Originated, More Than Five Years	9,998		9,998			150
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	12,883		12,883			7,320
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		0			79
Financing Receivable, Originated, Year Two	107		107			1,419
Financing Receivable, Originated, Year Three	433		433			237
Financing Receivable, Originated, Year Four	434		434			544
Financing Receivable, Originated, Year Five	510		510			344
Financing Receivable, Originated, More Than Five Years	8,218		8,218			12,381
Financing Receivable, Revolving	2,377		2,377			2,387
Financing Receivable, Revolving, Converted to Term Loan	548		548			665
Total	12,627		12,627			18,056
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			0
Financing Receivable, Originated, Year Two	0		0			0
Financing Receivable, Originated, Year Three	0		0			0
Financing Receivable, Originated, Year Four	0		0			280
Financing Receivable, Originated, Year Five	280		280			375
Financing Receivable, Originated, More Than Five Years	6,337		6,337			9,054
Financing Receivable, Revolving	0		0			0
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	6,617		6,617			9,709
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		0			4
Financing Receivable, Originated, Year Two	26		26			51
Financing Receivable, Originated, Year Three	44		44			9
Financing Receivable, Originated, Year Four	11		11			16
Financing Receivable, Originated, Year Five	9		9			3
Financing Receivable, Originated, More Than Five Years	8		8			12
Financing Receivable, Revolving	24		24			158
Financing Receivable, Revolving, Converted to Term Loan	0		0			0
Total	$ 122		$ 122			$ 253

[1] Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

[2] Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.

XML

Loans and Allowances for Credit Losses Loans and Allowances for Credit Losses, Nonaccrual (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	$ 90,683	$ 145,469
Financing Receivable, Nonaccrual, No Allowance	78,986	102,380
Financing Receivable, Nonaccrual, With Allowance	11,697	43,089
Financing Receivable, Nonaccrual, Related Allowance	2,214	2,692
Commercial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	58,434	110,131
Financing Receivable, Nonaccrual, No Allowance	46,737	67,042
Financing Receivable, Nonaccrual, With Allowance	11,697	43,089
Financing Receivable, Nonaccrual, Related Allowance	2,214	2,692
Commercial [Member] | Healthcare [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	20,845	81,529
Financing Receivable, Nonaccrual, No Allowance	10,930	40,372
Financing Receivable, Nonaccrual, With Allowance	9,915	41,157
Financing Receivable, Nonaccrual, Related Allowance	1,700	1,478
Commercial [Member] | Services [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	3,165	3,616
Financing Receivable, Nonaccrual, No Allowance	1,521	1,684
Financing Receivable, Nonaccrual, With Allowance	1,644	1,932
Financing Receivable, Nonaccrual, Related Allowance	441	1,214
Commercial [Member] | Energy [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	28,668	17,843
Financing Receivable, Nonaccrual, No Allowance	28,668	17,843
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Commercial [Member] | General business [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	5,756	7,143
Financing Receivable, Nonaccrual, No Allowance	5,618	7,143
Financing Receivable, Nonaccrual, With Allowance	138	0
Financing Receivable, Nonaccrual, Related Allowance	73	0
Commercial real estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	12,883	7,320
Financing Receivable, Nonaccrual, No Allowance	12,883	7,320
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Loans to individuals [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	19,366	28,018
Financing Receivable, Nonaccrual, No Allowance	19,366	28,018
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	12,627	18,056
Financing Receivable, Nonaccrual, No Allowance	12,627	18,056
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	122	253
Financing Receivable, Nonaccrual, No Allowance	122	253
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	6,617	9,709
Financing Receivable, Nonaccrual, No Allowance	6,617	9,709
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	$ 0	$ 0

XML

Loans and Allowances for Credit Losses, Modifications (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount	$ 114.0	$ 58.0
Number of Days Past Due Following Modification to be Considered a Payment Default	30 days
Commercial [Member] | Extended Maturity
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount	$ 110.0
Healthcare [Member] | Commercial [Member]
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount	90.0	37.0
Healthcare [Member] | Commercial [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount		26.0
General business [Member] | Commercial [Member]
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount		10.0
Healthcare, Services and General business member | Extended Maturity
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount		20.0
Residential Mortgage [Member] | Loans to individuals [Member]
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified, Subsequent Default		4.4
Energy [Member] | Commercial [Member]
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount	14.0
US Government Agency Insured Loans [Member] | Loans to individuals [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount	4.1	11.0
US Government Agency Insured Loans [Member] | Residential Mortgage [Member] | Loans to individuals [Member]
Financing Receivable, Loan Modifications [Line Items]
Financing Receivable, Modified in Period, Amount		11.0
Financing Receivable, Modified, Subsequent Default	$ 1.1	$ 4.3

XML

Loans and Allowances for Credit Losses, By Aging Category (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	$ 49,542	$ 48,371
Current and Past Due Performing Loans	24,553,581	23,904,968
30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	37,177	55,411
60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	26,220	50,082
90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	79,881	93,644
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	24,410,303	23,705,831
Commercial [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	2,866	0
Current and Past Due Performing Loans	15,623,409	14,803,769
Commercial [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	2,419	18,433
Commercial [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	5,736	31,447
Commercial [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	19,566	29,890
Commercial [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	15,595,688	14,723,999
Commercial [Member] | Healthcare [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	0
Current and Past Due Performing Loans	4,231,058	4,143,233
Commercial [Member] | Healthcare [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	1,375	18,019
Commercial [Member] | Healthcare [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	4,415	30,290
Commercial [Member] | Healthcare [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	10,763	23,588
Commercial [Member] | Healthcare [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	4,214,505	4,071,336
Commercial [Member] | Services [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	72	0
Current and Past Due Performing Loans	3,577,144	3,576,223
Commercial [Member] | Services [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	2
Commercial [Member] | Services [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	1,158	0
Commercial [Member] | Services [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	435	434
Commercial [Member] | Services [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,575,551	3,575,787
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	3,451,485	3,437,101
Commercial [Member] | Energy [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	0
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	3,451,485	3,437,101
Commercial [Member] | General business [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	2,794	0
Current and Past Due Performing Loans	4,363,722	3,647,212
Commercial [Member] | General business [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	1,044	412
Commercial [Member] | General business [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	163	1,157
Commercial [Member] | General business [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	8,368	5,868
Commercial [Member] | General business [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	4,354,147	3,639,775
Commercial real estate [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	3
Current and Past Due Performing Loans	5,083,575	5,337,647
Commercial real estate [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	2,992
Commercial real estate [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,021	0
Commercial real estate [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	7,138	7,174
Commercial real estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	5,073,416	5,327,481
Loans to individuals [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	46,676	48,368
Current and Past Due Performing Loans	3,846,597	3,763,552
Loans to individuals [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	34,758	33,986
Loans to individuals [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	17,463	18,635
Loans to individuals [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	53,177	56,580
Loans to individuals [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	3,741,199	3,654,351
Loans to individuals [Member] | Residential mortgage [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	97	36
Current and Past Due Performing Loans	2,281,226	2,160,640
Loans to individuals [Member] | Residential mortgage [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	9,907	6,340
Loans to individuals [Member] | Residential mortgage [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	1,615	1,494
Loans to individuals [Member] | Residential mortgage [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	1,759	2,879
Loans to individuals [Member] | Residential mortgage [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	2,267,945	2,149,927
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	46,579	48,201
Current and Past Due Performing Loans	131,825	149,807
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	23,918	25,085
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	15,796	17,053
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	51,418	53,547
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	40,693	54,122
Loans to individuals [Member] | Personal [Member]
Financing Receivable, Past Due [Line Items]
Past Due 90 Days or More and Accruing	0	131
Current and Past Due Performing Loans	1,433,546	1,453,105
Loans to individuals [Member] | Personal [Member] | 30 to 59 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	933	2,561
Loans to individuals [Member] | Personal [Member] | 60 to 89 Days [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	52	88
Loans to individuals [Member] | Personal [Member] | 90 Days or More [Member]
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	0	154
Loans to individuals [Member] | Personal [Member] | Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Current and Past Due Performing Loans	$ 1,432,561	$ 1,450,302

XML

Mortgage Banking Activities, Components of Loans Held For Sale (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
Residential mortgage loans held for sale, nonperforming	$ 0		$ 0
Number of days for past due for loan to be considered nonperforming (in days)	90 days		90 days
Credit losses recognized on residential mortgage loans held for sale	$ 0	$ 0
Components of Residential Mortgage Loans Held for Sale [Abstract]
Unpaid principal balance	105,922		$ 56,922
Residential mortgage loans held for sale, Fair value	105,706		56,457
Residential mortgage loans held for sale	$ 107,465		$ 56,935
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	$ 62,960		$ 34,783
Derivative, Net fair value	$ 1,945		$ 1,379
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	$ 127,010		$ 75,448
Derivative, Net fair value	$ (186)		$ (901)

XML

Mortgage Banking Activities Mortgage Banking Activities, Mortgage Banking Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Mortgage Banking Revenue [Abstract]
Net realized gains (losses) on sale of mortgage loans	$ 2,338	$ (296)	$ 4,364	$ (2,027)
Net change in unrealized gain (loss) on mortgage loans held for sale	631	(496)	249	(126)
Net change in the fair value of mortgage loan commitments	(528)	(865)	566	775
Net change in the fair value of forward sales contracts	(72)	1,373	715	461
Total production revenue (loss)	2,369	(284)	5,894	(917)
Servicing revenue	16,259	15,425	31,701	30,425
Total mortgage banking revenue	$ 18,628	$ 15,141	$ 37,595	$ 29,508

XML

Mortgage Banking Activities, Mortgage Servicing Rights (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Summary of Mortgage Servicing Rights [Abstract]
Number of residential mortgage loans serviced for others	125,698		125,698		115,967
Outstanding principal balance of residential mortgage loans serviced for others	$ 22,188,347,000		$ 22,188,347,000		$ 20,382,192,000
Weighted average interest rate	3.68%		3.68%		3.64%
Remaining term (in months)			278 months		280 months
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	$ 319,330,000	$ 299,803,000	$ 293,884,000	$ 277,608,000	$ 277,608,000
Additions	4,454,000	4,103,000	6,970,000	6,603,000
Acquisitions	14,021,000	0	31,421,000	31,138,000
Changes due to principal payments	(8,012,000)	(8,445,000)	(13,459,000)	(13,829,000)
Change in fair value due to market assumption changes	3,453,000	9,261,000	14,430,000	3,202,000
Ending balance	$ 333,246,000	$ 304,722,000	$ 333,246,000	$ 304,722,000	$ 293,884,000
Servicing Assets at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Discount rate - risk-free rate plus a market premium (in hundredths)			9.91%		9.72%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed			6.75%		7.34%
Loan servicing costs - annually per loan based upon loan type, performing, minimum (in dollars per loan)			$ 73		$ 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)			4.38%		3.90%
Primary secondary mortgage rate spread	115		115		105
Delinquency rate			2.48%		2.06%

XML

Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 08, 2024	Jun. 30, 2024
Bank Participation in Fraudulent Sale of Securities by Principals [Member] | Pending Litigation [Member]
Litigation Settlement [Abstract]
Outstanding principal accrued interest and other amounts upon sale of facilities securing payment of the bonds		$ 33
Loss Contingency, Damages Sought, Value		$ 3
Visa Membership
Loss Contingencies [Line Items]
Potential Exchange Offer Program Conversion Percentage	5000.00%
Common Stock Class B Shares Owned		252,233
Common Stock Owned		200,212
Common Stock Class B-2 Shares Owned		126,116

XML

Commitments and Contingent Liabilities Variable Interest Entities (Details) $ in Millions	Jun. 30, 2024 USD ($)
Other Assets [Member]
Variable Interest Entity [Line Items]
Amortization Method Qualified Affordable Housing Project Investments	$ 412
Other Liabilities [Member]
Variable Interest Entity [Line Items]
Qualified Affordable Housing Project Investments, Commitment	$ 107

XML

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Jul. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Dividends declared (in dollars per share)		$ 0.55	$ 0.54	$ 1.10	$ 1.08
Schedule of Accumulated Other Income (Loss) [Abstract]
Balance, Beginning of Period				$ (599,100)	$ (836,955)
Net change in unrealized gain (loss)		$ (5,943)	$ (160,408)	(77,749)	(36,363)
Interest revenue, Investment securities		12,027	16,033	24,210	32,084
Loss (gain) on available for sale securities, net		(34)	3,010	45,137	3,010
Other comprehensive income, before income taxes		6,050	(141,365)	(8,402)	(1,269)
Federal and state income taxes		1,424	(33,247)	(2,000)	(1,552)
Other comprehensive income, net of income taxes		4,626	(108,118)	(6,402)	283
Balance, End of Period		(605,502)	(836,672)	(605,502)	(836,672)
Accumulated Net Unrealized Gain (Loss) on Available for Sale Securities [Member]
Schedule of Accumulated Other Income (Loss) [Abstract]
Balance, Beginning of Period				(473,212)	(664,618)
Net change in unrealized gain (loss)				(77,749)	(36,363)
Interest revenue, Investment securities				0	0
Loss (gain) on available for sale securities, net				45,137	3,010
Other comprehensive income, before income taxes				(32,612)	(33,353)
Federal and state income taxes				(7,695)	(8,839)
Other comprehensive income, net of income taxes				(24,917)	(24,514)
Balance, End of Period		(498,129)	(689,132)	(498,129)	(689,132)
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				(125,888)	(172,337)
Net change in unrealized gain (loss)				0	0
Interest revenue, Investment securities				24,210	32,084
Loss (gain) on available for sale securities, net				0	0
Other comprehensive income, before income taxes				24,210	32,084
Federal and state income taxes				5,695	7,287
Other comprehensive income, net of income taxes				18,515	24,797
Balance, End of Period		$ (107,373)	$ (147,540)	$ (107,373)	$ (147,540)
Subsequent Event [Member]
Dividends Payable, Date Declared	Jul. 30, 2024
Dividends declared (in dollars per share)	$ 0.55
Dividends Payable, Date to be Paid	Aug. 30, 2024
Dividends Payable, Date of Record	Aug. 15, 2024

XML

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Numerator: [Abstract]
Net income attributable to BOK Financial Corp. shareholders	$ 163,713	$ 151,308	$ 247,416	$ 313,676
Less: Earnings allocated to participating securities	1,602	1,202	2,278	2,457
Numerator for basic earnings per share – income available to common shareholders	162,111	150,106	245,138	311,219
Effect of reallocating undistributed earnings of participating securities	0	0	0	0
Numerator for diluted earnings per share – income available to common shareholders	$ 162,111	$ 150,106	$ 245,138	$ 311,219
Denominator: [Abstract]
Weighted average shares outstanding (in shares)	64,343,898	66,521,728	64,578,226	66,684,603
Less: Participating securities included in weighted average shares (in shares)	629,694	527,596	576,072	522,555
Denominator for basic earnings per common share (in shares)	63,714,204	65,994,132	64,002,154	66,162,048
Dilutive effect of employee stock compensation plans (in shares)	0	0	0	0
Denominator for diluted earnings per common share (in shares)	63,714,204	65,994,132	64,002,154	66,162,048
Basic earnings per share	$ 2.54	$ 2.27	$ 3.83	$ 4.70
Diluted earnings per share	$ 2.54	$ 2.27	$ 3.83	$ 4.70

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Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Net interest income from external sources	$ 296,021	$ 322,261	$ 589,593	$ 674,609
Net interest income (expense) from internal sources	0	0	0	0
Net interest income	296,021	322,261	589,593	674,609
Net loans charged off and provisions for credit losses	8,000	17,000	16,000	33,000
Net interest income after provision for credit losses	288,021	305,261	573,593	641,609
Other operating revenue	259,704	209,049	421,405	386,914
Other operating expense	336,690	318,673	677,074	624,485
Net direct contribution	211,035	195,637	317,924	404,038
Gain (loss) on financial instruments, net	0	0	0	0
Change in fair value of mortgage servicing rights	0	0	0	0
Gain (loss) on repossessed assets, net	0	0	0	0
Corporate expense allocations	0	0	0	0
Net income before taxes	211,035	195,637	317,924	404,038
Federal and state income taxes	47,303	44,001	70,498	89,906
Net income	163,732	151,636	247,426	314,132
Net income attributable to non-controlling interests	19	328	10	456
Net income attributable to BOK Financial Corp. shareholders	163,713	151,308	247,416	313,676
Average assets	51,195,199	47,908,107	50,611,385	46,950,607
Operating Segments [Member] | Commercial [Member]
Segment Reporting Information [Line Items]
Net interest income from external sources	283,328	299,712	566,084	587,970
Net interest income (expense) from internal sources	(79,593)	(77,975)	(158,354)	(139,134)
Net interest income	203,735	221,737	407,730	448,836
Net loans charged off and provisions for credit losses	6,134	6,000	10,294	6,076
Net interest income after provision for credit losses	197,601	215,737	397,436	442,760
Other operating revenue	54,536	68,828	104,542	125,673
Other operating expense	76,114	77,559	146,209	150,693
Net direct contribution	176,023	207,006	355,769	417,740
Gain (loss) on financial instruments, net	168	231	335	173
Change in fair value of mortgage servicing rights	0	0	0	0
Gain (loss) on repossessed assets, net	0	408	0	1,267
Corporate expense allocations	17,381	21,404	35,778	39,122
Net income before taxes	158,810	186,241	320,326	380,058
Federal and state income taxes	39,247	45,462	78,966	92,610
Net income	119,563	140,779	241,360	287,448
Net income attributable to non-controlling interests	0	0	0	0
Net income attributable to BOK Financial Corp. shareholders	119,563	140,779	241,360	287,448
Average assets	30,305,613	28,170,869	30,056,215	28,166,923
Operating Segments [Member] | Consumer [Member]
Segment Reporting Information [Line Items]
Net interest income from external sources	6,192	17,828	13,542	38,974
Net interest income (expense) from internal sources	58,972	50,260	115,757	96,324
Net interest income	65,164	68,088	129,299	135,298
Net loans charged off and provisions for credit losses	1,247	1,129	3,055	2,313
Net interest income after provision for credit losses	63,917	66,959	126,244	132,985
Other operating revenue	36,252	32,277	72,459	62,887
Other operating expense	55,128	52,340	108,575	102,538
Net direct contribution	45,041	46,896	90,128	93,334
Gain (loss) on financial instruments, net	(3,577)	(10,257)	(13,240)	(14,930)
Change in fair value of mortgage servicing rights	3,453	9,261	14,430	3,202
Gain (loss) on repossessed assets, net	9	0	116	14
Corporate expense allocations	13,392	12,318	27,564	23,940
Net income before taxes	31,534	33,582	63,870	57,680
Federal and state income taxes	7,417	7,898	15,022	13,566
Net income	24,117	25,684	48,848	44,114
Net income attributable to non-controlling interests	0	0	0	0
Net income attributable to BOK Financial Corp. shareholders	24,117	25,684	48,848	44,114
Average assets	9,630,470	9,597,723	9,511,225	9,765,186
Operating Segments [Member] | Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest income from external sources	2,612	4,415	9,611	25,355
Net interest income (expense) from internal sources	26,889	29,426	48,288	44,087
Net interest income	29,501	33,841	57,899	69,442
Net loans charged off and provisions for credit losses	0	(45)	(15)	(69)
Net interest income after provision for credit losses	29,501	33,886	57,914	69,511
Other operating revenue	113,208	123,043	231,912	231,954
Other operating expense	90,214	84,587	189,502	166,342
Net direct contribution	52,495	72,342	100,324	135,123
Gain (loss) on financial instruments, net	0	0	0	0
Change in fair value of mortgage servicing rights	0	0	0	0
Gain (loss) on repossessed assets, net	0	0	0	0
Corporate expense allocations	16,484	12,784	31,263	25,310
Net income before taxes	36,011	59,558	69,061	109,813
Federal and state income taxes	8,514	14,056	16,336	25,927
Net income	27,497	45,502	52,725	83,886
Net income attributable to non-controlling interests	0	0	0	0
Net income attributable to BOK Financial Corp. shareholders	27,497	45,502	52,725	83,886
Average assets	16,452,098	12,949,258	16,105,713	12,309,730
Funds Management and Other [Member]
Segment Reporting Information [Line Items]
Net interest income from external sources	3,889	306	356	22,310
Net interest income (expense) from internal sources	(6,268)	(1,711)	(5,691)	(1,277)
Net interest income	(2,379)	(1,405)	(5,335)	21,033
Net loans charged off and provisions for credit losses	619	9,916	2,666	24,680
Net interest income after provision for credit losses	(2,998)	(11,321)	(8,001)	(3,647)
Other operating revenue	55,708	(15,099)	12,492	(33,600)
Other operating expense	115,234	104,187	232,788	204,912
Net direct contribution	(62,524)	(130,607)	(228,297)	(242,159)
Gain (loss) on financial instruments, net	3,409	10,026	12,905	14,757
Change in fair value of mortgage servicing rights	(3,453)	(9,261)	(14,430)	(3,202)
Gain (loss) on repossessed assets, net	(9)	(408)	(116)	(1,281)
Corporate expense allocations	(47,257)	(46,506)	(94,605)	(88,372)
Net income before taxes	(15,320)	(83,744)	(135,333)	(143,513)
Federal and state income taxes	(7,875)	(23,415)	(39,826)	(42,197)
Net income	(7,445)	(60,329)	(95,507)	(101,316)
Net income attributable to non-controlling interests	19	328	10	456
Net income attributable to BOK Financial Corp. shareholders	(7,464)	(60,657)	(95,517)	(101,772)
Average assets	$ (5,192,982)	$ (2,809,743)	$ (5,061,768)	$ (3,291,232)

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Fees and Commissions Revenue Fees and Commissions (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024		Jun. 30, 2023		Jun. 30, 2024		Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total fees and commissions	$ 200,027		$ 200,497		$ 400,591		$ 386,476
Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	200,027		200,497		400,591		386,476
Fees and commission revenue not from contracts with customers	65,430	[1]	77,322	[2]	139,185	[3]	139,800	[4]
Fees and commissions revenue from contracts with customers	134,597	[5]	123,175	[6]	261,406	[7]	246,676	[8]
Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	53,017		65,006		112,196		117,402
Fees and commission revenue not from contracts with customers	38,402	[1]	54,015	[2]	85,278	[3]	93,565	[4]
Fees and commissions revenue from contracts with customers	14,615	[5]	10,991	[6]	26,918	[7]	23,837	[8]
Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	27,695		36,921		65,152		64,519
Fees and commission revenue not from contracts with customers	27,695	[1]	36,921	[2]	65,152	[3]	64,519	[4]
Fees and commissions revenue from contracts with customers	0	[5]	0	[6]	0	[7]	0	[8]
Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	6,765		13,642		13,090		21,996
Fees and commission revenue not from contracts with customers	6,765	[1]	13,642	[2]	13,090	[3]	21,996	[4]
Fees and commissions revenue from contracts with customers	0	[5]	0	[6]	0	[7]	0	[8]
Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	4,838		3,321		9,531		7,165
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	4,838	[5]	3,321	[6]	9,531	[7]	7,165	[8]
Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions			2,857				6,163
Fees and commission revenue not from contracts with customers			0	[2]			0	[4]
Fees and commissions revenue from contracts with customers			2,857	[6]			6,163	[8]
Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	13,719		8,265		24,423		17,559
Fees and commission revenue not from contracts with customers	3,942	[1]	3,452	[2]	7,036	[3]	7,050	[4]
Fees and commissions revenue from contracts with customers	9,777	[5]	4,813	[6]	17,387	[7]	10,509	[8]
Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	27,246		26,003		52,739		51,624
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	27,246	[5]	26,003	[6]	52,739	[7]	51,624	[8]
TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	22,640		21,375		43,914		42,767
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	22,640	[5]	21,375	[6]	43,914	[7]	42,767	[8]
Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,510		2,504		4,699		4,662
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	2,510	[5]	2,504	[6]	4,699	[7]	4,662	[8]
Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,096		2,124		4,126		4,195
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	2,096	[5]	2,124	[6]	4,126	[7]	4,195	[8]
Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	57,576		52,997		112,881		103,654
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	57,576	[5]	52,997	[6]	112,881	[7]	103,654	[8]
Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	26,770		25,315		51,115		48,842
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	26,770	[5]	25,315	[6]	51,115	[7]	48,842	[8]
Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	8,646		7,201		17,906		14,861
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	8,646	[5]	7,201	[6]	17,906	[7]	14,861	[8]
Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	16,519		13,707		32,667		26,960
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	16,519	[5]	13,707	[6]	32,667	[7]	26,960	[8]
Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,641		6,774		11,193		12,991
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	5,641	[5]	6,774	[6]	11,193	[7]	12,991	[8]
Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	29,572		27,100		58,257		53,068
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	29,572	[5]	27,100	[6]	58,257	[7]	53,068	[8]
Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	16,550		14,380		32,527		28,227
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	16,550	[5]	14,380	[6]	32,527	[7]	28,227	[8]
Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,433		5,141		10,893		10,014
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	5,433	[5]	5,141	[6]	10,893	[7]	10,014	[8]
Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	6,049		5,975		11,719		11,614
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	6,049	[5]	5,975	[6]	11,719	[7]	11,614	[8]
Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,540		1,604		3,118		3,213
Fees and commission revenue not from contracts with customers	0	[1]	0	[2]	0	[3]	0	[4]
Fees and commissions revenue from contracts with customers	1,540	[5]	1,604	[6]	3,118	[7]	3,213	[8]
Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	18,628		15,141		37,595		29,508
Fees and commission revenue not from contracts with customers	18,628	[1]	15,141	[2]	37,595	[3]	29,508	[4]
Fees and commissions revenue from contracts with customers	0	[5]	0	[6]	0	[7]	0	[8]
Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,369		(284)		5,894		(917)
Fees and commission revenue not from contracts with customers	2,369	[1]	(284)	[2]	5,894	[3]	(917)	[4]
Fees and commissions revenue from contracts with customers	0	[5]	0	[6]	0	[7]	0	[8]
Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	16,259		15,425		31,701		30,425
Fees and commission revenue not from contracts with customers	16,259	[1]	15,425	[2]	31,701	[3]	30,425	[4]
Fees and commissions revenue from contracts with customers	0	[5]	0	[6]	0	[7]	0	[8]
Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	13,988		14,250		26,923		31,220
Fees and commission revenue not from contracts with customers	8,400	[1]	8,166	[2]	16,312	[3]	16,727	[4]
Fees and commissions revenue from contracts with customers	5,588	[5]	6,084	[6]	10,611	[7]	14,493	[8]
Operating Segments [Member] | Commercial [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	53,720		59,704		104,350		115,539
Operating Segments [Member] | Commercial [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	7,514		16,353		15,076		26,538
Operating Segments [Member] | Commercial [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Commercial [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,408		12,839		7,151		19,326
Operating Segments [Member] | Commercial [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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	4,106		3,514		7,925		7,212
Operating Segments [Member] | Commercial [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	26,253		24,811		50,637		49,245
Operating Segments [Member] | Commercial [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	21,883		20,483		42,349		40,982
Operating Segments [Member] | Commercial [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,502		2,494		4,682		4,644
Operating Segments [Member] | Commercial [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,868		1,834		3,606		3,619
Operating Segments [Member] | Commercial [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Commercial [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Commercial [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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		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		0		0
Operating Segments [Member] | Commercial [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	15,681		13,663		30,886		26,796
Operating Segments [Member] | Commercial [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	15,395		13,364		30,295		26,235
Operating Segments [Member] | Commercial [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	27		32		63		57
Operating Segments [Member] | Commercial [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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	259		267		528		504
Operating Segments [Member] | Commercial [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Commercial [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Commercial [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Commercial [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	4,272		4,877		7,751		12,960
Operating Segments [Member] | Consumer [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	36,252		32,361		72,459		62,942
Operating Segments [Member] | Consumer [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Consumer [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Consumer [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Consumer [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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		0		0
Operating Segments [Member] | Consumer [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	784		917		1,619		1,833
Operating Segments [Member] | Consumer [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	776		907		1,602		1,815
Operating Segments [Member] | Consumer [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	8		10		17		18
Operating Segments [Member] | Consumer [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Consumer [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Consumer [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Consumer [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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		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		0		0
Operating Segments [Member] | Consumer [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	13,164		12,805		25,995		25,083
Operating Segments [Member] | Consumer [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	552		530		1,083		1,029
Operating Segments [Member] | Consumer [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,374		5,066		10,768		9,894
Operating Segments [Member] | Consumer [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	6,049		5,976		11,719		11,614
Operating Segments [Member] | Consumer [Member] | Automated service charge and other deposit fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	1,189		1,233		2,425		2,546
Operating Segments [Member] | Consumer [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	19,333		15,709		38,973		30,634
Operating Segments [Member] | Consumer [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,369		(284)		5,894		(917)
Operating Segments [Member] | Consumer [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	16,964		15,993		33,079		31,551
Operating Segments [Member] | Consumer [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	2,971		2,930		5,872		5,392
Operating Segments [Member] | Wealth Management [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	113,208		123,050		231,912		231,961
Operating Segments [Member] | Wealth Management [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	45,193		47,691		96,248		88,135
Operating Segments [Member] | Wealth Management [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	27,695		36,921		65,152		64,519
Operating Segments [Member] | Wealth Management [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	3,047		(159)		5,067		(59)
Operating Segments [Member] | Wealth Management [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	4,838		3,321		9,531		7,165
Operating Segments [Member] | Wealth Management [Member] | Insurance brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions			2,857				6,163
Operating Segments [Member] | Wealth Management [Member] | Investment banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	9,613		4,751		16,498		10,347
Operating Segments [Member] | Wealth Management [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	142		167		303		327
Operating Segments [Member] | Wealth Management [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(19)		(17)		(37)		(34)
Operating Segments [Member] | Wealth Management [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Wealth Management [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	161		184		340		361
Operating Segments [Member] | Wealth Management [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	57,576		52,998		112,881		103,676
Operating Segments [Member] | Wealth Management [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	26,770		25,315		51,115		48,842
Operating Segments [Member] | Wealth Management [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	8,646		7,201		17,906		14,861
Operating Segments [Member] | Wealth Management [Member] | Institutional trust & retirement plan services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	16,519		13,707		32,667		26,960
Operating Segments [Member] | Wealth Management [Member] | Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	5,641		6,775		11,193		13,013
Operating Segments [Member] | Wealth Management [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	727		633		1,376		1,189
Operating Segments [Member] | Wealth Management [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	603		488		1,149		965
Operating Segments [Member] | Wealth Management [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	32		42		62		62
Operating Segments [Member] | Wealth Management [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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	92		103		165		162
Operating Segments [Member] | Wealth Management [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Wealth Management [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Wealth Management [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Operating Segments [Member] | Wealth Management [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	9,570		21,561		21,104		38,634
Funds Management and Other [Member] | Fees and commissions revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(3,153)		(14,618)		(8,130)		(23,966)
Funds Management and Other [Member] | Brokerage and trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	310		962		872		2,729
Funds Management and Other [Member] | Trading revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Funds Management and Other [Member] | Customer hedging revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	310		962		872		2,729
Funds Management and Other [Member] | Retail brokerage revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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		0		0
Funds Management and Other [Member] | Transaction card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	67		108		180		219
Funds Management and Other [Member] | TransFund EFT network revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		2		0		4
Funds Management and Other [Member] | Merchant services revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Funds Management and Other [Member] | Corporate card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	67		106		180		215
Funds Management and Other [Member] | Fiduciary and asset management revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		(1)		0		(22)
Funds Management and Other [Member] | Personal trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Funds Management and Other [Member] | Corporate trust revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		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		0		0
Funds Management and Other [Member] | Investment management services and other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		(1)		0		(22)
Funds Management and Other [Member] | Deposit service charges and fees [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		(1)		0		0
Funds Management and Other [Member] | Commercial account service charge revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		(2)		0		(2)
Funds Management and Other [Member] | Overdraft fee revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		1		0		1
Funds Management and Other [Member] | Check card revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		(1)		0		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		1		0		1
Funds Management and Other [Member] | Mortgage banking revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(705)		(568)		(1,378)		(1,126)
Funds Management and Other [Member] | Mortgage production revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	0		0		0		0
Funds Management and Other [Member] | Mortgage servicing revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	(705)		(568)		(1,378)		(1,126)
Funds Management and Other [Member] | Other revenue [Member]
Disaggregation of Revenue [Line Items]
Total fees and commissions	$ (2,825)		$ (15,118)		$ (7,804)		$ (25,766)

[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] Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance.

[4] Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance.

[5] In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.

[6] In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.

[7] In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers

[8] In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.

XML

Fair Value Measurements, Fair Value Of Financial Instruments as Measured On a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024		Mar. 31, 2024	Dec. 31, 2023		Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Assets: [Abstract]
Trading securities	$ 5,212,791			$ 5,193,505
Available for sale securities	12,793,784			12,286,681
Fair value option securities	19,050			20,671
Mortgage servicing rights	333,246		$ 319,330	293,884		$ 304,722	$ 299,803	$ 277,608
Derviative contracts, net of cash collateral, Assets, Fair value	225,076			410,304
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	287,509			587,473
U.S. government securities [Member]
Assets: [Abstract]
Trading securities	71,169			10,959
Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	5,023,892			5,105,137
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
Municipal securities [Member]
Assets: [Abstract]
Trading securities	56,780			37,413
Available for sale securities	278,043			502,833
U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	923			925
Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	828,049			799,877
Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	3,577,729			4,147,853
Other debt securities [Member]
Assets: [Abstract]
Trading securities	60,950			39,996
Available for sale securities	473			473
Fair Value, Recurring [Member]
Assets: [Abstract]
Trading securities	5,212,791			5,193,505
Available for sale securities	12,793,784			12,286,681
Residential mortgage loans held for sale	107,465	[1]		56,935	[2]
Mortgage servicing rights	333,246	[3]		293,884	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	225,076	[5]		410,304	[6]
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	287,509	[5]		587,473	[6]
Fair Value, Recurring [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	71,169			10,959
Fair Value, Recurring [Member] | Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	5,023,892			5,105,137
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
Fair Value, Recurring [Member] | Municipal securities [Member]
Assets: [Abstract]
Trading securities	56,780			37,413
Available for sale securities	278,043			502,833
Fair Value, Recurring [Member] | Other trading securities
Assets: [Abstract]
Trading securities	60,950			39,996
Fair Value, Recurring [Member] | U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	923			925
Fair Value, Recurring [Member] | Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	828,049			799,877
Fair Value, Recurring [Member] | Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	3,577,729			4,147,853
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	69,955			9,017
Available for sale securities	923			925
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	3,699	[5]		0	[6]
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	658	[5]		2,607	[6]
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	69,955			9,017
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] | 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	923			925
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	5,142,836			5,184,488
Available for sale securities	12,792,388			12,285,283
Residential mortgage loans held for sale	100,364	[1]		49,749	[2]
Mortgage servicing rights	0	[3]		0	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	221,377	[5]		410,304	[6]
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	286,851	[5]		584,866	[6]
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. government securities [Member]
Assets: [Abstract]
Trading securities	1,214			1,942
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential agency mortgage-backed securities [Member]
Assets: [Abstract]
Trading securities	5,023,892			5,105,137
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal securities [Member]
Assets: [Abstract]
Trading securities	56,780			37,413
Available for sale securities	278,043			502,833
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other trading securities
Assets: [Abstract]
Trading securities	60,950			39,996
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Treasury [Member]
Assets: [Abstract]
Available for sale securities	0			0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential non-agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	828,049			799,877
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial agency mortgage-backed securities [Member]
Assets: [Abstract]
Available for sale securities	3,577,729			4,147,853
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
Residential mortgage loans held for sale	7,101	[1]		7,186	[2]
Mortgage servicing rights	333,246	[3]		293,884	[4]
Derviative contracts, net of cash collateral, Assets, Fair value	$ 0	[5]		$ 0	[6]
Liquidity Discount on Mortgage Loans Qualifying for Sale to US Govt Agencies	79.41%			77.74%
Liabilities: [Abstract]
Derivative contracts, net of cash collateral, Liabilities, Fair Value	$ 0	[5]		$ 0	[6]
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] | 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, 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 79.41% 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 77.74% 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.

[4] 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.

[5] 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.

[6] 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.

XML

Fair Value Measurements, Fair Value Measured On a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other gains (losses), net	$ 57,375	$ 12,618	$ 61,644	$ 14,869
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	6,349	6,797	10,033	8,787
Other gains (losses), net	0	0	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		0		(101)
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	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	65	0	65	0
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		547
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Nonaccruing Loans [Member] | Management knowledge of industry and non-real estate collateral | Discounted Cash Flow [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 10,065	12,048	$ 10,065	12,048
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real estate and other repossessed assets [Member] | Management knowledge of industry and non-real estate collateral | Discounted Cash Flow [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		$ 0		$ 0

XML

Fair Value Measurements Fair Value Measurement, Measured On Non-Recurring Basis, Signfiicant Unobservable Inputs, Quantitative Information (Details) - Fair Value, Nonrecurring [Member] - Nonaccruing Loans [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	Jun. 30, 2024		Jun. 30, 2023
Discounted Cash Flow [Member] | Management knowledge of industry and non-real estate collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure	$ 10,065		$ 12,048
Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance	4.00%	[1]	44.00%	[2]
Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance	90.00%	[1]	62.00%	[2]
Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance	45.00%	[1]	58.00%	[2]

[1] Represents fair value as a percentage of the unpaid principal balance.

[2] Represents fair value as a percentage of the unpaid principal balance.

XML

Fair Value Measurements, Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024		Mar. 31, 2024	Dec. 31, 2023		Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	$ 5,212,791			$ 5,193,505
Debt Securities, Held-to-maturity, gross	2,269,560			2,409,090
Investment securities, Allowance for Credit Loss	(287)	[1]		(336)	[2]
Investment Securities, Amortized Cost, After Allowance for Credit Loss	2,269,273			2,408,754
Available for sale securities	12,793,784			12,286,681
Fair value option securities	19,050			20,671
Residential mortgage loans held for sale	107,465			56,935
Loans	24,553,581			23,904,968
Allowance for loan losses	(287,826)			(277,123)
Loans, net of allowance	24,265,755			23,627,845
Mortgage servicing rights	333,246		$ 319,330	293,884		$ 304,722	$ 299,803	$ 277,608
Derviative contracts, net of cash collateral, Assets, Fair value	225,076			410,304
Time deposits	3,463,935			3,012,022
Subordinated debentures	131,156			131,150
Derivative contracts, net of cash collateral, Liabilities, Fair Value	287,509			587,473
Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	15,623,409			14,803,769
Allowance for loan losses	(150,737)			(141,232)
Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	5,083,575			5,337,647
Allowance for loan losses	(96,256)			(94,718)
Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,846,597			3,763,552
Allowance for loan losses	(40,833)			(41,173)
U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	71,169			10,959
Residential agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	5,023,892			5,105,137
Debt Securities, Held-to-maturity, gross	2,129,826			2,255,340
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	56,780			37,413
Debt Securities, Held-to-maturity, gross	107,188			120,705
Available for sale securities	278,043			502,833
U.S. Treasury [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	923			925
Residential non-agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	828,049			799,877
Commercial agency mortgage-backed securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Held-to-maturity, gross	17,258			17,258
Available for sale securities	3,577,729			4,147,853
Other debt securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	60,950			39,996
Debt Securities, Held-to-maturity, gross	15,288			15,787
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	897,811			947,613
Interest-bearing cash and cash equivalents	178,352			400,652
Trading securities	5,212,791			5,193,505
Debt Securities, Held-to-maturity, gross	2,129,168			2,244,489
Investment securities, Allowance for Credit Loss	(287)			(336)
Investment Securities, Amortized Cost, After Allowance for Credit Loss	2,128,881			2,244,153
Available for sale securities	12,793,784			12,286,681
Residential mortgage loans held for sale	107,465			56,935
Loans	24,553,581			23,904,968
Allowance for loan losses	(287,826)			(277,123)
Loans, net of allowance	24,265,755			23,627,845
Mortgage servicing rights	333,246			293,884
Derviative contracts, net of cash collateral, Assets, Fair value	225,076			410,304
Deposits with no stated maturity	32,777,709			31,007,679
Time deposits	3,463,935			3,012,022
Other borrowed funds	7,342,296			8,824,300
Subordinated debentures	131,156			131,150
Derivative contracts, net of cash collateral, Liabilities, Fair Value	287,509			587,473
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	15,623,409			14,803,769
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	5,083,575			5,337,647
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,846,597			3,763,552
Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	71,169			10,959
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	5,023,892			5,105,137
Debt Securities, Held-to-maturity, gross	1,990,626			2,092,083
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	56,780			37,413
Debt Securities, Held-to-maturity, gross	107,188			120,705
Available for sale securities	278,043			502,833
Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	60,950			39,996
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	923			925
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	828,049			799,877
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	16,066			15,914
Available for sale securities	3,577,729			4,147,853
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	15,288			15,787
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	897,811			947,613
Interest-bearing cash and cash equivalents	178,352			400,652
Trading securities	5,212,791			5,193,505
Debt Securities, Held-to-maturity, gross	1,924,532			2,072,586
Investment securities, Allowance for Credit Loss	0			0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	1,924,532			2,072,586
Available for sale securities	12,793,784			12,286,681
Residential mortgage loans held for sale	107,465			56,935
Loans	24,295,523			23,768,385
Allowance for loan losses	0			0
Loans, net of allowance	24,295,523			23,768,385
Mortgage servicing rights	333,246			293,884
Derviative contracts, net of cash collateral, Assets, Fair value	225,076			410,304
Deposits with no stated maturity	32,777,709			31,007,679
Time deposits	3,439,777			2,993,685
Other borrowed funds	7,342,295			8,824,299
Subordinated debentures	119,428			115,798
Derivative contracts, net of cash collateral, Liabilities, Fair Value	287,509			587,473
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	15,594,663			14,862,873
Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	4,988,792			5,270,657
Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans	3,712,068			3,634,855
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	71,169			10,959
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	5,023,892			5,105,137
Debt Securities, Held-to-maturity, gross	1,786,096			1,917,810
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	56,780			37,413
Debt Securities, Held-to-maturity, gross	109,700			125,525
Available for sale securities	278,043			502,833
Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	60,950			39,996
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	923			925
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	828,049			799,877
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	15,030			15,067
Available for sale securities	3,577,729			4,147,853
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	13,706			14,184
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	897,811			947,613
Interest-bearing cash and cash equivalents	178,352			400,652
Trading securities	69,955			9,017
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	923			925
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	3,699			0
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	658			2,607
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	69,955			9,017
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] | 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	923			925
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	5,142,836			5,184,488
Debt Securities, Held-to-maturity, gross	1,826,821			1,959,366
Investment securities, Allowance for Credit Loss	0			0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	1,826,821			1,959,366
Available for sale securities	12,792,388			12,285,283
Residential mortgage loans held for sale	100,364			49,749
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	221,377			410,304
Deposits with no stated maturity	32,777,709			0
Time deposits	0			0
Other borrowed funds	0			0
Subordinated debentures	119,428			115,798
Derivative contracts, net of cash collateral, Liabilities, Fair Value	286,851			584,866
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	1,214			1,942
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	5,023,892			5,105,137
Debt Securities, Held-to-maturity, gross	1,786,096			1,917,810
Available for sale securities	8,108,567			6,834,720
Fair value option securities	19,050			20,671
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	56,780			37,413
Debt Securities, Held-to-maturity, gross	11,989			12,305
Available for sale securities	278,043			502,833
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	60,950			39,996
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, 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	828,049			799,877
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	15,030			15,067
Available for sale securities	3,577,729			4,147,853
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	13,706			14,184
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	97,711			113,220
Investment securities, Allowance for Credit Loss	0			0
Investment Securities, Amortized Cost, After Allowance for Credit Loss	97,711			113,220
Available for sale securities	473			473
Residential mortgage loans held for sale	7,101			7,186
Loans	24,295,523			23,768,385
Allowance for loan losses	0			0
Loans, net of allowance	24,295,523			23,768,385
Mortgage servicing rights	333,246			293,884
Derviative contracts, net of cash collateral, Assets, Fair value	0			0
Deposits with no stated maturity	0			31,007,679
Time deposits	3,439,777			2,993,685
Other borrowed funds	7,342,295			8,824,299
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	15,594,663			14,862,873
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	4,988,792			5,270,657
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	3,712,068			3,634,855
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	97,711			113,220
Available for sale securities	0			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, 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 $140 million of net unrealized loss which remains in 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.

[2] Carrying value includes $165 million of net unrealized loss which remains in 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.