Stifel Financial (SF) 10-Q 4 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Registrant Name	STIFEL FINANCIAL CORP
Entity Central Index Key	0000720672
Current Fiscal Year End Date	--12-31
Entity File Number	001-09305
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1273600
Entity Address, Address Line One	501 N. Broadway
Entity Address, City or Town	St. Louis
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63102-2188
City Area Code	314
Local Phone Number	342-2000
Document Quarterly Report	true
Document Transition Report	false
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
Common Stock [Member]
Document Information [Line Items]
Trading Symbol	SF
Title of 12(b) Security	Common Stock, $0.15 par value per share
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		104,110,518
Depository Shares, each representing 1/1,000th interest in a share of 6.25% Non-Cumulative Preferred Stock, Series B [Member]
Document Information [Line Items]
Trading Symbol	SF-PB
Title of 12(b) Security	Depository Shares, each representing 1/1,000th interest in a share of 6.25% Non-Cumulative Preferred Stock, Series B
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		6,400
Depository Shares, each representing 1/1,000th interest in a share of 6.125% Non-Cumulative Preferred Stock, Series C [Member]
Document Information [Line Items]
Trading Symbol	SF-PC
Title of 12(b) Security	Depository Shares, each representing 1/1,000th interest in a share of 6.125% Non-Cumulative Preferred Stock, Series C
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		9,000
Depository Shares, each representing 1/1,000th interest in a share of 4.50% Non-Cumulative Preferred Stock, Series D [Member]
Document Information [Line Items]
Trading Symbol	SF-PD
Title of 12(b) Security	Depository Shares, each representing 1/1,000th interest in a share of 4.50% Non-Cumulative Preferred Stock, Series D
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		12,000
Senior notes 5.20% due 2047 [Member]
Document Information [Line Items]
Trading Symbol	SFB
Title of 12(b) Security	5.20% Senior Notes due 2047
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		225,000,000

Consolidated Statements Of Fina

Consolidated Statements Of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 2,054,273	$ 2,279,274
Cash segregated for regulatory purposes	26,095	172,932
Receivables:
Brokerage clients, net	1,121,827	936,500
Brokers, dealers, and clearing organizations	488,429	549,492
Securities purchased under agreements to resell	598,535	217,930
Financial instruments owned, at fair value	1,199,386	694,028
Available-for-sale securities, at fair value	2,242,465	2,230,297
Held-to-maturity securities, at amortized cost	5,347,821	4,117,384
Loans:
Held for investment, net	13,502,587	11,006,760
Held for sale, at lower of cost or market	156,110	551,248
Investments, at fair value	120,919	113,862
Fixed assets, net	307,602	167,915
Operating lease right-of-use assets, net	756,885	793,181
Goodwill	1,182,313	1,181,998
Intangible assets, net	127,725	140,984
Loans and advances to financial advisors and other employees, net	607,552	596,993
Deferred tax assets, net	179,715	136,477
Other assets	800,095	716,999
Total assets	30,820,334	26,604,254
Payables:
Brokerage clients	1,317,245	1,063,937
Brokers, dealers, and clearing organizations	245,278	177,937
Drafts	85,889	117,737
Securities sold under agreements to repurchase	195,451	190,955
Bank deposits	20,398,874	17,396,497
Financial instruments sold, but not yet purchased, at fair value	721,028	437,978
Accrued compensation	728,390	638,298
Accounts payable and accrued expenses	1,111,645	1,169,740
Federal Home Loan Bank advances	52,000
Senior notes	1,113,210	1,112,409
Debentures to Stifel Financial Capital Trusts	60,000	60,000
Total liabilities	26,029,010	22,365,488
Stifel Financial Corp. shareholders' equity:
Preferred stock - $1 par value; authorized 3,000,000 shares; issued 27,400 and 21,400 shares, respectively	685,000	535,000
Common stock - $0.15 par value; authorized 194,000,000 shares; issued 111,661,728 and 111,661,621 shares, respectively	16,749	16,749
Additional paid-in-capital	1,864,011	1,888,982
Retained earnings	2,528,727	2,078,135
Accumulated other comprehensive income	21,585	27,639
Treasury stock, at cost, 7,398,501 and 8,512,584 shares, respectively	(324,748)	(307,739)
Total equity	4,791,324	4,238,766
Total liabilities and equity	$ 30,820,334	$ 26,604,254

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Condition (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	27,400	21,400
Common stock, par value	$ 0.15	$ 0.15
Common stock, shares authorized	194,000,000	194,000,000
Common stock, shares issued	111,661,728	111,661,621
Treasury stock, shares	7,398,501	8,512,584

Consolidated Statements Of Oper

Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Revenue from contracts with customers		$ 880,472	$ 636,899	$ 2,604,651	$ 1,875,321
Principal transactions		118,977	140,883	436,580	445,566
Interest		141,844	114,411	402,975	403,956
Other income		18,760	20,258	57,629	50,979
Total revenues		1,154,961	897,122	3,471,504	2,743,414
Interest expense		10,023	13,822	38,641	51,263
Net revenues	[1]	1,144,938	883,300	3,432,863	2,692,151
Non-interest expenses:
Compensation and benefits		672,385	533,638	2,062,353	1,657,991
Occupancy and equipment rental		72,160	68,598	215,163	200,935
Communications and office supplies		40,432	40,123	123,565	124,293
Commissions and floor brokerage		14,744	13,254	44,424	43,273
Provision for credit losses		(660)	(1,353)	(15,564)	33,925
Other operating expenses		89,375	70,647	254,503	215,275
Total non-interest expenses		888,436	724,907	2,684,444	2,275,692
Income from operations before income tax expense		256,502	158,393	748,419	416,459
Provision for income taxes		64,126	37,866	184,951	101,456
Net income		192,376	120,527	563,468	315,003
Preferred dividends		9,689	9,897	26,267	19,584
Net income available to common shareholders		$ 182,687	$ 110,630	$ 537,201	$ 295,419
Earnings per common share:
Basic		$ 1.70	$ 1.04	$ 4.99	$ 2.78
Diluted		1.54	0.97	4.54	2.60
Cash dividends declared per common share		$ 0.15	$ 0.11	$ 0.45	$ 0.33
Weighted-average number of common shares outstanding:
Basic		107,379	105,941	107,655	106,221
Diluted		118,475	113,775	118,355	113,568
Commissions [Member]
Revenues:
Revenue from contracts with customers		$ 189,239	$ 172,654	$ 598,432	$ 560,780
Investment Banking [Member]
Revenues:
Revenue from contracts with customers		372,279	218,134	1,088,010	614,637
Asset Management and Service Fees [Member]
Revenues:
Revenue from contracts with customers		$ 313,862	$ 230,782	$ 887,878	$ 667,496
[1]	No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2021 or 2020.

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 192,376	$ 120,527	$ 563,468	$ 315,003
Other comprehensive income/(loss), net of tax
Changes in unrealized gains/(losses) on available-for-sale securities	[1]	2,971	19,123	(2,147)	22,467
Changes in unrealized losses on cash flow hedging instruments	[2]		(2,968)		(651)
Foreign currency translation adjustment		(8,652)	7,946	(3,907)	(2,032)
Total other comprehensive income/(loss), net of tax		(5,681)	24,101	(6,054)	19,784
Comprehensive income		$ 186,695	$ 144,628	$ 557,414	$ 334,787
[1]	There were no reclassifications to earnings for the three and nine months ended September 30, 2021. Reclassifications to earnings were immaterial for the three and nine months ended September 30, 2020.
[2]	Reclassifications to earnings were immaterial for the three and nine months ended September 30, 2021 and 2020.

Consolidated Statements Of Co_2

Consolidated Statements Of Comprehensive Income (Parenthetical) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Other comprehensive income/(loss), tax	$ (1.9)	$ 7.6	$ (2)	$ 6.4
Reclassifications to earnings of realized gains/(losses) on available-for-sale securities	$ 0		$ 0

Consolidated Statements Of Shar

Consolidated Statements Of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands		Total		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member]Cumulative Adjustments for Accounting Changes [Member]Revision of Prior Period, Adjustment	AOCI Attributable to Parent	Treasury Stock	Noncontrolling Interest	Parent [Member]
Balance, beginning of period at Dec. 31, 2019				$ 310,000	$ 16,749	$ 1,903,703	$ 1,715,704	$ (7,772)	$ (11,705)	$ (319,660)	$ 54,999
Common stock repurchased		$ (56,500)								(56,517)
Unit amortization, net of forfeitures						88,717
Distributions under employee plans						(113,389)	(47,813)			60,895
Net income		315,003					315,003
Dividends declared, Common							(42,980)
Dividends declared, Preferred							(19,584)
Issuance of preferred stock				225,000		(7,005)
Dividends declared to equity-award holders						350
Unrealized gains on securities, net of tax	[1]	22,467
Unrealized gains on cash flow hedging activities, net of tax									(651)
Foreign currency translation adjustment, net of tax		(2,032)							(2,032)
Other						83	1,124
Deconsolidation of non-controlling interest											$ (54,999)
Balance, end of period at Sep. 30, 2020		4,030,687		535,000	16,749	1,872,459	1,913,682		8,079	(315,282)		$ 4,030,687
Balance, beginning of period at Jun. 30, 2020				535,000	16,749	1,847,608	1,818,335		(16,022)	(317,610)
Unit amortization, net of forfeitures						28,101
Distributions under employee plans						(3,403)	(302)			2,328
Net income		120,527					120,527
Dividends declared, Common							(14,042)
Dividends declared, Preferred							(9,897)
Issuance of preferred stock						15
Unrealized gains on securities, net of tax		19,123	[1]						19,123
Unrealized gains on cash flow hedging activities, net of tax									(2,968)
Foreign currency translation adjustment, net of tax		7,946							7,946
Other						138	(939)
Balance, end of period at Sep. 30, 2020		4,030,687		535,000	16,749	1,872,459	1,913,682		8,079	(315,282)		4,030,687
Balance, beginning of period at Dec. 31, 2020		4,238,766		535,000	16,749	1,888,982	2,078,135		27,639	(307,739)
Common stock repurchased		(86,400)								(84,723)
Unit amortization, net of forfeitures						93,840
Distributions under employee plans						(109,563)	(30,315)			67,714
Net income		563,468					563,468
Dividends declared, Common							(55,890)
Dividends declared, Preferred							(26,267)
Issuance of preferred stock				300,000		(9,279)
Redemption of preferred stock				(150,000)
Unrealized gains on securities, net of tax	[1]	(2,147)
Foreign currency translation adjustment, net of tax		(3,907)							(3,907)
Other						31	(404)
Balance, end of period at Sep. 30, 2021		4,791,324		685,000	16,749	1,864,011	2,528,727		21,585	(324,748)		4,791,324
Balance, beginning of period at Jun. 30, 2021				535,000	16,749	1,846,986	2,365,907		27,266	(283,118)
Common stock repurchased		(44,800)								(43,716)
Unit amortization, net of forfeitures						29,595
Distributions under employee plans						(3,266)	(1,169)			2,086
Net income		192,376					192,376
Dividends declared, Common							(18,586)
Dividends declared, Preferred							(9,689)
Issuance of preferred stock				300,000		(9,279)
Redemption of preferred stock				(150,000)
Unrealized gains on securities, net of tax		2,971	[1]						2,971
Foreign currency translation adjustment, net of tax		(8,652)							(8,652)
Other						(25)	(112)
Balance, end of period at Sep. 30, 2021		$ 4,791,324		$ 685,000	$ 16,749	$ 1,864,011	$ 2,528,727		$ 21,585	$ (324,748)		$ 4,791,324
[1]	There were no reclassifications to earnings for the three and nine months ended September 30, 2021. Reclassifications to earnings were immaterial for the three and nine months ended September 30, 2020.

Consolidated Statements Of Sh_2

Consolidated Statements Of Shareholders' Equity (Parenthetical) (Unaudited) - $ / shares	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Statement Of Stockholders Equity [Abstract]
Preferred stock, par value	$ 1	$ 1	$ 1
Common stock, par value	$ 0.15	$ 0.15	$ 0.15

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows From Operating Activities:
Net income	$ 563,468	$ 315,003
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	33,496	29,659
Amortization of loans and advances to financial advisors and other employees	83,850	76,728
Amortization of premium on investment portfolio	12,969	15,516
Provision for credit losses and allowance for loans and advances to financial advisors and other employees	(15,564)	35,066
Amortization of intangible assets	13,216	14,489
Deferred income taxes	(42,492)	(8,973)
Stock-based compensation	85,283	80,987
Losses on sale of investments	1,302	22,828
Other, net	39,809	(7,926)
Receivables:
Brokerage clients	(185,327)	297,127
Brokers, dealers, and clearing organizations	61,063	183,105
Securities purchased under agreements to resell	(380,605)	(51,852)
Financial instruments owned, including those pledged	(505,358)	153,217
Loans originated as held for sale	(1,594,937)	(2,013,038)
Proceeds from mortgages held for sale	1,954,135	2,141,691
Loans and advances to financial advisors and other employees	(94,958)	(138,020)
Other assets	(76,967)	64,572
Increase/(decrease) in operating liabilities, net of liabilities assumed:
Brokerage clients	253,308	287,384
Brokers, dealers, and clearing organizations	28,900	(33,956)
Drafts	(31,848)	(29,060)
Financial instruments sold, but not yet purchased	283,050	(62,918)
Other liabilities and accrued expenses	84,942	(37,105)
Net cash provided by operating activities	570,735	1,334,524
Net cash provided by operating activities	570,735	1,334,524
Cash Flows From Investing Activities:
Principal paydowns, calls, and maturities of available-for-sale securities	448,780	781,922
Calls and principal paydowns of held-to-maturity securities	1,307,342	155,784
Sale or maturity of investments	17,581	2,252
Disposition of business		37,000
Increase in loans held for investment, net	(2,480,035)	(1,075,568)
Payments for:
Purchase of fixed assets	(173,183)	(70,532)
Purchase of available-for-sale securities	(807,088)	(628,660)
Purchase of held-to-maturity securities	(2,223,971)	(384,700)
Purchase of investments	(20,515)	(21,317)
Acquisitions, net of cash received	(315)	(280)
Net cash used in investing activities	(3,931,404)	(1,204,099)
Cash Flows From Financing Activities:
Proceeds from/(repayments of) Federal Home Loan Bank advances, net	52,000	(250,000)
Payment of contingent consideration	(16,798)	(22,285)
Increase/(decrease) in securities sold under agreements to repurchase	4,496	(209,363)
Increase in bank deposits, net	3,002,377	1,067,420
Increase/(decrease) in securities loaned	38,441	(520,982)
Tax payments related to shares withheld for stock-based compensation plans	(70,202)	(70,754)
Proceeds from preferred stock issuance, net	290,721	217,995
Proceeds from issuance of senior notes, net		393,940
Redemption of preferred stock	(150,000)
Repurchase of common stock	(84,723)	(56,517)
Cash dividends on preferred stock	(26,267)	(18,972)
Cash dividends paid to common stock and equity-award holders	(47,307)	(34,800)
Cash paid to employees upon settlement of equity awards		(27,101)
Net cash provided by financing activities	2,992,738	468,581
Effect of exchange rate changes on cash	(3,907)	(2,032)
Increase/(decrease) in cash, cash equivalents, and cash segregated for regulatory purposes	(371,838)	596,974
Cash, cash equivalents, and cash segregated for regulatory purposes at beginning of period	2,452,206	1,273,970
Cash, cash equivalents, and cash segregated for regulatory purposes at end of period	2,080,368	1,870,944
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net of refunds	227,641	112,190
Cash paid for interest	47,070	66,974
Noncash financing activities:
Unit grants, net of forfeitures	$ 142,771	$ 117,801

Cash, Cash Equivalents, and Cas

Cash, Cash Equivalents, and Cash Restricted for Regulatory Purposes for Periods Presented in Consolidated Statement of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Statement Of Cash Flows [Abstract]
Cash and cash equivalents	$ 2,054,273	$ 2,279,274
Cash segregated for regulatory purposes	26,095	172,932
Total cash, cash equivalents, and cash segregated for regulatory purposes	$ 2,080,368	$ 2,452,206

Nature of Operations, Basis of

Nature of Operations, Basis of Presentation, and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations, Basis of Presentation, and Summary of Significant Accounting Policies	NOTE 1 – Nature of Operations, Basis of Presentation, and Summary of Significant Accounting Policies Nature of Operations Stifel Financial Corp. (the “Company”), through its wholly owned subsidiaries, is principally engaged in retail brokerage; securities trading; investment banking; investment advisory; retail, consumer, and commercial banking; and related financial services. Our major geographic area of concentration is throughout the United States, with a growing presence in the United Kingdom, Europe, and Canada. Our company’s principal customers are individual investors, corporations, municipalities, and institutions. Basis of Presentation The consolidated financial statements include Stifel Financial Corp. and its wholly owned subsidiaries, principally Stifel, Nicolaus & Company, Incorporated (“Stifel”), Keefe, Bruyette & Woods, Inc., Stifel Bancorp, Inc. (“Stifel Bancorp”), Stifel Nicolaus Canada Inc. (“SNC”), and Stifel Nicolaus Europe Limited (“SNEL”). Unless otherwise indicated, the terms “we,” “us,” “our,” or “our company” in this report refer to Stifel Financial Corp. and its wholly owned subsidiaries. We have prepared the accompanying unaudited consolidated financial statements pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Pursuant to these rules and regulations, we have omitted certain information and footnote disclosures we normally include in our annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles. In management’s opinion, we have made all adjustments (consisting only of normal, recurring adjustments, except as otherwise noted) necessary to fairly present our financial position, results of operations and cash flows. Our interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year. These financial statements and accompanying notes should be read in conjunction with the consolidated financial statements and the notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2020 on file with the SEC. On November 11, 2020, our Board approved a 50% stock dividend, in the form of a three-for-two Certain amounts from prior periods have been reclassified to conform to the current period’s presentation. The effect of these reclassifications on our company’s previously reported consolidated financial statements was not material. Consolidation Policies The consolidated financial statements include the accounts of Stifel Financial Corp. and its subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation. We have investments or interests in other entities for which we must evaluate whether to consolidate by determining whether we have a controlling financial interest or are considered to be the primary beneficiary. Under our current consolidation policy, which complies with the provisions of ASC 810 as amended by ASU 2015-02, we consolidate those entities where we have the power to direct the activities of the entity that most significantly impact the entity’s economic performance and the obligation to absorb losses of the entity or the rights to receive benefits from the entity that could potentially be significant to the entity. We determine whether we are the primary beneficiary of a variable interest entity (“VIE”) by performing an analysis of the VIE’s control structure, expected benefits and losses, and expected residual returns. This analysis includes a review of, among other factors, the VIE’s capital structure, contractual terms, which interests create or absorb benefits or losses, variability, related party relationships, and the design of the VIE. We reassess our evaluation of whether an entity is a VIE when certain reconsideration events occur. We reassess our determination of whether we are the primary beneficiary of a VIE on an ongoing basis based on current facts and circumstances. See Note 24 for additional information on VIEs.

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2021
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Pronouncements	NOTE 2 – New Accounting Pronouncements Recently Adopted Accounting Guidance Income Taxes In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,” which is intended to simplify various aspects related to accounting for income taxes. This accounting update removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. We prospectively adopted the accounting update on January 1, 2021. The adoption did not have a material impact on our consolidated financial statements.

Receivables From And Payables T

Receivables From And Payables To Brokers, Dealers And Clearing Organizations	9 Months Ended
	Sep. 30, 2021
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Receivables From And Payables To Brokers, Dealers And Clearing Organizations	NOTE 3 – Receivables From and Payables to Brokers, Dealers, and Clearing Organizations Amounts receivable from brokers, dealers, and clearing organizations at September 30, 2021 and December 31, 2020, included (in thousands) September 30, 2021 December 31, 2020 Deposits paid for securities borrowed $ 314,154 $ 313,131 Receivables from clearing organizations 131,469 229,070 Securities failed to deliver 42,806 7,291 $ 488,429 $ 549,492 Amounts payable to brokers, dealers, and clearing organizations at September 30, 2021 and December 31, 2020, included (in thousands) September 30, 2021 December 31, 2020 Deposits received from securities loaned $ 183,564 $ 145,124 Securities failed to receive 43,603 7,273 Payable to clearing organizations 18,111 25,540 $ 245,278 $ 177,937 Deposits paid for securities borrowed approximate the market value of the securities. Securities failed to deliver and receive represent the contract value of securities that have not been delivered or received on settlement date.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 4 – Fair Value Measurements We measure certain financial assets and liabilities at fair value on a recurring basis, including financial instruments owned, available-for-sale securities, investments, financial instruments sold, but not yet purchased, and derivatives. We generally utilize third-party pricing services to value Level 1 and Level 2 available-for-sale investment securities, as well as certain derivatives designated as cash flow hedges. We review the methodologies and assumptions used by the third-party pricing services and evaluate the values provided, principally by comparison with other available market quotes for similar instruments and/or analysis based on internal models using available third-party market data. We may occasionally adjust certain values provided by the third-party pricing service when we believe, as the result of our review, that the adjusted price most appropriately reflects the fair value of the particular security. Following are descriptions of the valuation methodologies and key inputs used to measure financial assets and liabilities recorded at fair value. The descriptions include an indication of the level of the fair value hierarchy in which the assets or liabilities are classified. Financial Instruments Owned and Available-For-Sale Securities When available, the fair value of financial instruments is based on quoted prices in active markets and reported in Level 1. Level 1 financial instruments include highly liquid instruments with quoted prices, such as equity securities listed in active markets, corporate fixed income securities, and U.S. government securities. If quoted prices are not available for identical instruments, fair values are obtained from pricing services, broker quotes, or other model-based valuation techniques with observable inputs, such as the present value of estimated cash flows, and reported as Level 2. The nature of these financial instruments include instruments for which quoted prices are available but traded less frequently, instruments whose fair value has been derived using a model where inputs to the model are directly observable in the market, or can be derived principally from or corroborated by observable market data, and instruments that are fair valued using other financial instruments, the parameters of which can be directly observed. Level 2 financial instruments include U.S. government agency securities, mortgage-backed securities, fixed income and equity securities infrequently traded, state and municipal securities, sovereign debt, and asset-backed securities, which primarily include collateralized loan obligations. We have identified Level 3 financial instruments to include loans and certain asset-backed securities with unobservable pricing inputs. Level 3 financial instruments have little to no pricing observability as of the report date. These financial instruments do not have active two-way markets and are measured using management’s best estimate of fair value, where the inputs into the determination of fair value require significant management judgment or estimation. Investments Investments carried at fair value primarily include corporate equity securities, auction-rate securities (“ARS”), and private company investments. Corporate equity securities are primarily valued based on quoted prices in active markets and reported in Level 1. ARS are primarily valued based upon our expectations of issuer redemptions and using internal discounted cash flow models that utilize unobservable inputs. ARS are primarily reported as Level 3 assets. Private company investments are primarily valued based upon internally developed models. These valuations require significant management judgment due to the absence of quoted market prices, the inherent lack of liquidity, and their long-term nature. Typically, the initial costs of these investments are considered to represent fair market value, as such amounts are negotiated between willing market participants. Private company investments are primarily reported as Level 3 assets. Investments at fair value include investments in funds, including certain money market funds that are measured at net asset value (“NAV”). The Company uses NAV to measure the fair value of its fund investments when (i) the fund investment does not have a readily determinable fair value and (ii) the NAV of the investment fund is calculated in a manner consistent with the measurement principles of investment company accounting, including measurement of the underlying investments at fair value. The Company’s investments in funds measured at NAV include partnership interests, mutual funds, private equity funds, and money market funds. Private equity funds primarily invest in a broad range of industries worldwide in a variety of situations, including leveraged buyouts, recapitalizations, growth investments and distressed investments. The private equity funds are primarily closed-end funds in which the Company’s investments are generally not eligible for redemption. Distributions will be received from these funds as the underlying assets are liquidated or distributed. The general and limited partnership interests in investment partnerships were primarily valued based upon NAVs received from third-party fund managers. The various partnerships are investment companies, which record their underlying investments at fair value based on fair value policies established by management of the underlying fund. Fair value policies at the underlying fund generally require the funds to utilize pricing/valuation information, including independent appraisals, from third-party sources. However, in some instances, current valuation information for illiquid securities or securities in markets that are not active may not be available from any third-party source or fund management may conclude that the valuations that are available from third-party sources are not reliable. In these instances, fund management may perform model-based analytical valuations that may be used as an input to value these investments. The table below presents the fair value of our investments in, and unfunded commitments to, funds that are measured at NAV as of September 30, 2021 and December 31, 2020 (in thousands): September 30, 2021 December 31, 2020 Fair value of investments Unfunded commitments Fair value of investments Unfunded commitments Money market funds $ 1,639 $ — $ 34,192 $ — Mutual funds 6,885 — 7,152 — Partnership interests 12,893 12,946 3,744 2,520 Private equity funds 2,286 1,203 1,489 1,203 Total $ 23,703 $ 14,149 $ 46,577 $ 3,723 Financial Instruments Sold, But Not Yet Purchased Financial instruments sold, but not purchased, recorded at fair value based on quoted prices in active markets and other observable market data include highly liquid instruments with quoted prices, such as U.S. government securities, equity and fixed income securities listed in active markets, which are reported as Level 1. If quoted prices are not available, fair values are obtained from pricing services, broker quotes, or other model-based valuation techniques with observable inputs, such as the present value of estimated cash flows, and reported as Level 2. The nature of these financial instruments include instruments for which quoted prices are available but traded less frequently, instruments whose fair value has been derived using a model where inputs to the model are directly observable in the market, or can be derived principally from or corroborated by observable market data, and instruments that are fair valued using other financial instruments, the parameters of which can be directly observed. Level 2 financial instruments include agency mortgage-backed securities not actively traded, fixed income and equity securities, sovereign debt securities, and state and municipal securities. Assets and liabilities measured at fair value on a recurring basis as of September 30, 2021, are presented below (in thousands) September 30, 2021 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 16,829 $ 16,829 $ — $ — U.S. government agency securities 182,636 — 182,636 — Mortgage-backed securities: Agency 303,684 — 303,684 — Non-agency 19,697 — 19,697 — Asset-backed securities 74,783 — 5,849 68,934 Corporate securities: Fixed income securities 318,288 250 318,038 — Equity securities 91,874 90,648 1,226 — Sovereign debt 9,920 — 9,920 — State and municipal securities 162,821 — 162,821 — Loans 18,854 — — 18,854 Total financial instruments owned 1,199,386 107,727 1,003,871 87,788 Available-for-sale securities: U.S. government agency securities 2,268 — 2,268 — State and municipal securities 2,414 — 2,414 — Mortgage-backed securities: Agency 1,016,730 — 1,016,730 — Commercial 75,701 — 75,701 — Non-agency 581 — 581 — Corporate fixed income securities 820,839 — 820,839 — Asset-backed securities 323,932 — 323,932 — Total available-for-sale securities 2,242,465 — 2,242,465 — Investments: Corporate equity securities 25,198 16,443 1,001 7,754 Auction rate securities 12,912 — — 12,912 Other 60,745 10,233 14,547 35,965 Investments in funds and partnerships measured at NAV 22,064 Total investments 120,919 26,676 15,548 56,631 Cash equivalents measured at NAV 1,639 $ 3,564,409 $ 134,403 $ 3,261,884 $ 144,419 September 30, 2021 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 366,014 $ 366,014 $ — $ — U.S. government agency securities 44,638 — 44,638 — Agency mortgage-backed securities 109,887 — 109,887 — Corporate securities: Fixed income securities 161,529 — 161,529 — Equity securities 30,813 30,813 — — Other 8,147 — 8,147 — Total financial instruments sold, but not yet purchased $ 721,028 $ 396,827 $ 324,201 $ — Assets and liabilities measured at fair value on a recurring basis as of December 31, 2020, are presented below (in thousands) December 31, 2020 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 46,900 $ 46,900 $ — $ — U.S. government agency securities 56,450 — 56,450 — Agency mortgage-backed securities 216,434 — 216,434 — Corporate securities: Fixed income securities 194,575 4,474 190,101 — Equity securities 67,593 62,979 4,614 — State and municipal securities 96,150 — 96,150 — Other (1) 15,926 — 4,642 11,284 Total financial instruments owned 694,028 114,353 568,391 11,284 Available-for-sale securities: U.S. government agency securities 4,361 — 4,361 — State and municipal securities 2,453 — 2,453 — Mortgage-backed securities: Agency 793,410 — 793,410 — Commercial 95,613 — 95,613 — Non-agency 4,569 — 4,569 — Corporate fixed income securities 631,758 — 631,758 — Asset-backed securities 698,133 — 698,133 — Total available-for-sale securities 2,230,297 — 2,230,297 — Investments: Corporate equity securities 29,496 29,496 — — Auction rate securities 12,933 — — 12,933 Other 59,048 10,342 6,593 42,113 Investments in funds and partnerships measured at NAV 12,385 Total investments 113,862 39,838 6,593 55,046 Cash equivalents measured at NAV 34,192 $ 3,072,379 $ 154,191 $ 2,805,281 $ 66,330 (1) December 31, 2020 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 91,974 $ 91,974 $ — $ — Agency mortgage-backed securities 141,227 — 141,227 — Corporate securities: Fixed income securities 162,626 4,094 158,532 — Equity securities 30,848 30,848 — — Other (2) 11,303 — 11,303 — Total financial instruments sold, but not yet purchased $ 437,978 $ 126,916 $ 311,062 $ — (2) The following table summarizes the changes in fair value associated with Level 3 financial instruments during the three months ended September 30, 2021 (in thousands) Three Months Ended September 30, 2021 Financial instruments owned Investments Asset-backed Securities Loans Corporate Equity Securities Auction Securities Other Balance at June 30, 2021 $ 1,815 $ 22,839 $ 8,754 $ 12,959 $ 34,666 Unrealized gains/(losses) — — (1,000 ) (47 ) 1,299 Purchases 68,028 3,365 — — — Sales — (7,350 ) — — — Redemptions (839 ) — — — — Transfers out of Level 3 (70 ) — — — — Net change 67,119 (3,985 ) (1,000 ) (47 ) 1,299 Balance at September 30, 2021 $ 68,934 $ 18,854 $ 7,754 $ 12,912 $ 35,965 The following table summarizes the change in fair value associated with Level 3 financial instruments during the nine months ended September 30, 2021 (in thousands): Nine Months Ended September 30, 2021 Financial instruments owned Investments Asset-backed Securities Loans Corporate Equity Securities Auction Securities Other Balance at December 31, 2020 $ 9 $ 11,275 $ — $ 12,933 $ 42,113 Unrealized gains/(losses) (3,000 ) (48 ) (1,000 ) (21 ) 782 Realized gains 7,361 — — — — Purchases 68,104 14,977 3,000 — — Sales — (7,350 ) — — — Redemptions (10,400 ) — — — — Transfers into Level 3 — — 5,754 — — Transfers out of Level 3 (70 ) — — — — Category transfers 6,930 — — — (6,930 ) Net change 68,925 7,579 7,754 (21 ) (6,148 ) Balance at September 30, 2021 $ 68,934 $ 18,854 $ 7,754 $ 12,912 $ 35,965 The results included in the tables above are only a component of the overall investment strategies of our company. The tables above do not present Level 1 or Level 2 valued assets or liabilities. The changes in unrealized gains/(losses) recorded in earnings for the three and nine months ended September 30, 2021, relating to Level 3 assets still held at September 30, 2021, were immaterial. The fair value of certain Level 3 assets was determined using various methodologies, as appropriate, including third-party pricing vendors and broker quotes. These inputs are evaluated for reasonableness through various procedures, including due diligence reviews of third-party pricing vendors, variance analyses, consideration of current market environment, and other analytical procedures. The fair value for our auction rate securities was determined using an income approach based on an internally developed discounted cash flow model. The discounted cash flow model utilizes two significant unobservable inputs: discount rate and workout period. Significant increases in any of these inputs in isolation would result in a significantly lower fair value. On an ongoing basis, management verifies the fair value by reviewing the appropriateness of the discounted cash flow model and its significant inputs. Fair Value of Financial Instruments The following reflects the fair value of financial instruments as of September 30, 2021 and December 31, 2020, whether or not recognized in the consolidated statements of financial condition at fair value (in thousands) September 30, 2021 December 31, 2020 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Cash and cash equivalents $ 2,054,273 $ 2,054,273 $ 2,279,274 $ 2,279,274 Cash segregated for regulatory purposes 26,095 26,095 172,932 172,932 Securities purchased under agreements to resell 598,535 598,535 217,930 217,930 Financial instruments owned 1,199,386 1,199,386 694,028 694,028 Available-for-sale securities 2,242,465 2,242,465 2,230,297 2,230,297 Held-to-maturity securities 5,347,821 5,354,129 4,117,384 4,107,960 Bank loans 13,502,587 13,584,900 11,006,760 11,088,058 Loans held for sale 156,110 156,110 551,248 551,248 Investments 120,919 120,919 113,862 113,862 Financial liabilities: Securities sold under agreements to repurchase $ 195,451 $ 195,451 $ 190,955 $ 190,955 Bank deposits 20,398,874 20,161,189 17,396,497 17,192,722 Financial instruments sold, but not yet purchased 721,028 721,028 437,978 437,978 Federal Home Loan Bank advances 52,000 52,000 — — Senior notes 1,113,210 1,243,147 1,112,409 1,265,669 Debentures to Stifel Financial Capital Trusts 60,000 46,130 60,000 41,071 The following tables present the estimated fair values of financial instruments not measured at fair value on a recurring basis as of September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 2,052,634 $ 2,052,634 $ — $ — Cash segregated for regulatory purposes 26,095 26,095 — — Securities purchased under agreements to resell 598,535 393,097 205,438 — Held-to-maturity securities 5,354,129 — 5,212,387 141,742 Bank loans 13,584,900 — 13,584,900 — Loans held for sale 156,110 — 156,110 — Financial liabilities: Securities sold under agreements to repurchase $ 195,451 $ — $ 195,451 $ — Bank deposits 20,161,189 — 20,161,189 — Federal Home Loan Bank advances 52,000 52,000 — — Senior notes 1,243,147 1,243,147 — — Debentures to Stifel Financial Capital Trusts 46,130 — — 46,130 December 31, 2020 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 2,245,082 $ 2,245,082 $ — $ — Cash segregated for regulatory purposes 172,932 172,932 — — Securities purchased under agreements to resell 217,930 164,094 53,836 — Held-to-maturity securities 4,107,960 — 3,943,944 164,016 Bank loans 11,088,058 — 11,088,058 — Loans held for sale 551,248 — 551,248 — Financial liabilities: Securities sold under agreements to repurchase $ 190,955 $ — $ 190,955 $ — Bank deposits 17,192,722 — 17,192,722 — Senior notes 1,265,669 1,265,669 — — Debentures to Stifel Financial Capital Trusts 41,071 — — 41,071 The following, as supplemented by the discussion above, describes the valuation techniques used in estimating the fair value of our financial instruments as of September 30, 2021 and December 31, 2020. Financial Assets Securities Purchased Under Agreements to Resell Securities purchased under agreements to resell are collateralized financing transactions that are recorded at their contractual amounts plus accrued interest. The carrying values at September 30, 2021 and December 31, 2020 approximate fair value due to their short-term nature. Held-to-Maturity Securities Securities held to maturity are recorded at amortized cost based on our company’s positive intent and ability to hold these securities to maturity. Securities held to maturity include agency mortgage-backed securities, asset-backed securities, consisting of collateralized loan obligation securities and corporate fixed income securities. The estimated fair value, included in the above table, is determined using several factors; however, primary weight is given to discounted cash flow modeling techniques that incorporated an estimated discount rate based upon recent observable debt security issuances with similar characteristics. Bank Loans The fair values of mortgage loans and commercial loans were estimated using a discounted cash flow method, a form of the income approach. Discount rates were determined considering rates at which similar portfolios of loans, with similar remaining maturities, would be made and considering liquidity spreads applicable to each loan portfolio based on the secondary market. Loans Held for Sale Loans held for sale consist of fixed-rate and adjustable-rate residential real estate mortgage loans intended for sale. Loans held for sale are stated at lower of cost or market value. Market value is determined based on prevailing market prices for loans with similar characteristics or on sale contract prices. Financial Liabilities Securities Sold Under Agreements to Repurchase Securities sold under agreements to repurchase are collateralized financing transactions that are recorded at their contractual amounts plus accrued interest. The carrying values at September 30, 2021 and December 31, 2020 approximate fair value due to the short-term nature. Bank Deposits The fair value of interest-bearing deposits, including certificates of deposits, demand deposits, savings, and checking accounts, was calculated by discounting the future cash flows using discount rates based on the replacement cost of funding of similar structures and terms. Federal Home Loan Bank Advances Federal Home Loan Bank advances reflect terms that approximate current market rates for similar borrowings. Senior Notes The fair value of our senior notes is estimated based upon quoted market prices. Debentures to Stifel Financial Capital Trusts The fair value of our trust preferred securities is based on the discounted value of contractual cash flows. We have assumed a discount rate based on similar type debt instruments. These fair value disclosures represent our best estimates based on relevant market information and information about the financial instruments. Fair value estimates are based on judgments regarding future expected losses, current economic conditions, risk characteristics of the various instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in the above methodologies and assumptions could significantly affect the estimates.

Financial Instruments Owned And

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased	NOTE 5 – Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased The components of financial instruments owned and financial instruments sold, but not yet purchased, at September 30, 2021 and December 31, 2020 are as follows (in thousands) September 30, 2021 December 31, 2020 Financial instruments owned: U.S. government securities $ 16,829 $ 46,900 U.S. government agency securities 182,636 56,450 Mortgage-backed securities: Agency 303,684 216,434 Non-agency 19,697 107 Asset-backed securities 74,783 3,394 Corporate securities: Fixed income securities 318,288 194,575 Equity securities 91,874 67,593 Sovereign debt 9,920 1,150 State and municipal securities 162,821 96,150 Loans 18,854 11,275 $ 1,199,386 $ 694,028 Financial instruments sold, but not yet purchased: U.S. government securities $ 366,014 $ 91,974 U.S. government agency securities 44,638 — Agency mortgage-backed securities 109,887 141,227 Corporate securities: Fixed income securities 161,529 162,626 Equity securities 30,813 30,848 Other (1) 8,147 11,303 $ 721,028 $ 437,978 (1) Includes sovereign debt and state and municipal securities. At September 30, 2021 and December 31, 2020, financial instruments owned in the amount of $206.0 million and $194.0 million, respectively, were pledged as collateral for our repurchase agreements and short-term borrowings. Our financial instruments owned are presented on a trade-date basis in the consolidated statements of financial condition. Financial instruments sold, but not yet purchased, represent obligations of our company to deliver the specified security at the contracted price, thereby creating a liability to purchase the security in the market at prevailing prices in future periods. We are obligated to acquire the securities sold short at prevailing market prices in future periods, which may exceed the amount reflected in the consolidated statements of financial condition.

Available-For-Sale And Held-To-

Available-For-Sale And Held-To-Maturity Securities	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Available-For-Sale And Held-To-Maturity Securities	NOTE 6 – Available-for-Sale and Held-to-Maturity Securities The following tables provide a summary of the amortized cost and fair values of the available-for-sale securities and held-to-maturity securities at September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated Fair Value Available-for-sale securities U.S. government agency securities $ 2,249 $ 19 $ — $ 2,268 State and municipal securities 2,378 36 — 2,414 Mortgage-backed securities: Agency 1,011,466 11,408 (6,144 ) 1,016,730 Commercial 73,187 2,514 — 75,701 Non-agency 581 — — 581 Corporate fixed income securities 803,835 19,677 (2,673 ) 820,839 Asset-backed securities 322,322 3,546 (1,936 ) 323,932 $ 2,216,018 $ 37,200 $ (10,753 ) $ 2,242,465 Held-to-maturity securities (2) Asset-backed securities $ 5,347,821 $ 9,315 $ (3,007 ) $ 5,354,129 December 31, 2020 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated Fair Value Available-for-sale securities U.S. government agency securities $ 4,293 $ 68 $ — $ 4,361 State and municipal securities 2,395 58 — 2,453 Mortgage-backed securities: Agency 777,025 16,401 (16 ) 793,410 Commercial 91,237 4,376 — 95,613 Non-agency 4,550 28 (9 ) 4,569 Corporate fixed income securities 604,662 27,096 — 631,758 Asset-backed securities 700,177 3,522 (5,566 ) 698,133 $ 2,184,339 $ 51,549 $ (5,591 ) $ 2,230,297 Held-to-maturity securities (2) Asset-backed securities $ 4,117,384 $ 8,111 $ (17,535 ) $ 4,107,960 (1) Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive loss. (2) Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements. We are required to evaluate our available-for-sale and held-to-maturity debt securities for any expected losses with recognition of an allowance for credit losses, when applicable. At September 30, 2021, we did not have an allowance for credit losses recorded on our investment portfolio. Accrued interest receivable for our investment portfolio at September 30, 2021 and December 31, 2020 was $28.1 million and $26.0 million, respectively, and is reported in other assets in the consolidated statements of financial condition. We do not include reserves for interest receivable in the measurement of the allowance for credit losses. During the first quarter of 2021, we transferred $312.9 million of certain asset-backed securities from available-for-sale to held-to-maturity. Management determined that it has both the positive intent and ability to hold these securities to maturity. The reclassification of these securities was accounted for at fair value. On the date of transfer, the difference between the par value and the fair value of these securities resulted in a premium or discount that, under amortized cost accounting, will be amortized as a yield adjustment to interest income using the interest method. There were no gains or losses recognized as a result of this transfer. During the third quarter of 2020, the Company transferred $313.0 million of certain asset-backed securities from the available-for-sale category to held-to-maturity. Management determined that it has both the positive intent and ability to hold these securities to maturity. The reclassification of these securities was accounted for at fair value. On the date of transfer, the difference between the par value and the fair value of these securities resulted in a premium or discount that, under amortized cost accounting, will be amortized as a yield adjustment to interest income using the interest method. There were no gains or losses recognized as a result of this transfer. There were no sales of available-for-sale securities during the nine months ended September 30, 2021. There were no sales of available-for-sale securities during the three months ended September 30, 2020. For the nine months ended September 30, 2020, we received proceeds of $491.9 million, from the sale of available-for-sale securities, which resulted in a realized loss of $0.5 million. The table below summarizes the amortized cost and fair values of our securities by contractual maturity at September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 December 31, 2020 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Available-for-sale securities Within one year $ 25,169 $ 25,321 $ 143,462 $ 144,362 After one year through three years 223,518 230,667 134,040 137,625 After three years through five years 213,452 222,208 247,907 266,139 After five years through ten years 458,386 461,232 429,921 435,111 After ten years 1,295,493 1,303,037 1,229,009 1,247,060 $ 2,216,018 $ 2,242,465 $ 2,184,339 $ 2,230,297 Held-to-maturity securities After three years through five years $ — $ — $ 17,460 $ 17,460 After five years through ten years 2,267,811 2,267,120 1,932,439 1,926,425 After ten years 3,080,010 3,087,009 2,167,485 2,164,075 $ 5,347,821 $ 5,354,129 $ 4,117,384 $ 4,107,960 The maturities of our available-for-sale (fair value) and held-to-maturity (amortized cost) securities at September 30, 2021, are as follows ( in thousands Within 1 Year 1-5 Years 5-10 Years After 10 Years Total Available-for-sale securities (1) U.S. government agency securities $ 2,064 $ 204 $ — $ — $ 2,268 State and municipal securities — — 2,414 — 2,414 Mortgage-backed securities: Agency 56 96 63,321 953,257 1,016,730 Commercial — — — 75,701 75,701 Non-agency — — — 581 581 Corporate fixed income securities 23,201 452,575 345,063 — 820,839 Asset-backed securities — — 50,434 273,498 323,932 $ 25,321 $ 452,875 $ 461,232 $ 1,303,037 $ 2,242,465 Held-to-maturity securities Asset-backed securities $ — $ — $ 2,267,811 $ 3,080,010 $ 5,347,821 (1) Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis. At September 30, 2021 and December 31, 2020, securities of $735.4 million and $368.4 million, respectively, were pledged at the Federal Home Loan Bank as collateral for borrowings and letters of credit obtained to secure public deposits. At September 30, 2021 and December 31, 2020, securities of $1.2 billion and $1.4 billion, respectively, were pledged with the Federal Reserve discount window. The following table shows the gross unrealized losses and fair value of the Company’s investment securities with unrealized losses, aggregated by investment category and length of time the individual investment securities have been in continuous unrealized loss positions, at September 30, 2021 (in thousands) Less than 12 months 12 months or more Total Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Agency mortgage-backed securities $ (6,142 ) $ 618,905 $ (2 ) $ 332 $ (6,144 ) $ 619,237 Corporate fixed income securities (2,673 ) 181,665 — — (2,673 ) 181,665 Asset-backed securities (1,645 ) 116,790 (291 ) 51,144 (1,936 ) 167,934 $ (10,460 ) $ 917,360 $ (293 ) $ 51,476 $ (10,753 ) $ 968,836 At September 30, 2021, the amortized cost of 55 securities classified as available for sale exceeded their fair value by $10.8 million, of which $0.3 million related to investment securities that had been in a loss position for 12 months or longer. The total fair value of these investments at September 30, 2021, was $968.8 million, which was 43.2% of our available-for-sale portfolio. Credit Quality Indicators The Company uses Moody credit ratings as the primary credit quality indicator for its held-to-maturity debt securities. Each security is evaluated at least quarterly. The indicators represent the rating for debt securities, as of the date presented, based on the most recent assessment performed. The following table shows the amortized cost of our held-to-maturity securities by credit quality indicator at September 30, 2021 (in thousands) AAA AA A C Total Held-to-maturity securities Asset-backed securities $ 1,104,716 $ 4,235,714 $ 5,000 $ 2,391 $ 5,347,821

Bank Loans

Bank Loans	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Bank Loans	NOTE 7 – Bank Loans Our loan portfolio consists primarily of the following segments: Commercial and industrial (C&I). C&I loans primarily include commercial and industrial lending used for general corporate purposes, working capital and liquidity, and “event-driven." “Event-driven” loans support client merger, acquisition or recapitalization activities. C&I lending is structured as revolving lines of credit, letter of credit facilities, term loans and bridge loans. Risk factors considered in determining the allowance for corporate loans include the borrower’s financial strength, seniority of the loan, collateral type, leverage, volatility of collateral value, debt cushion, and covenants. Real Estate. Real estate loans include residential real estate non-conforming loans, residential real estate conforming loans, commercial real estate, and home equity lines of credit. The allowance methodology related to real estate loans considers several factors, including, but not limited to, loan-to-value ratio, FICO score, home price index, delinquency status, credit limits, and utilization rates. Securities-based loans. Securities-based loans allow clients to borrow money against the value of qualifying securities for any suitable purpose other than purchasing, trading, or carrying securities or refinancing margin debt. The majority of consumer loans are structured as revolving lines of credit and letter of credit facilities and are primarily offered through Stifel’s Pledged Asset ("SPA") program. The allowance methodology for securities-based lending considers the collateral type underlying the loan, including the liquidity and trading volume of the collateral, position concentration and other borrower specific factors such as personal guarantees. Construction and land. Short-term loans used to finance the development of a real estate project. Other. Other loans include consumer and credit card lending. The following table presents the balance and associated percentage of each major loan category in our bank loan portfolio at September 30, 2021 and December 31, 2020 (in thousands, except percentages) September 30, 2021 December 31, 2020 Balance Percent Balance Percent Commercial and industrial $ 5,033,313 36.9 % $ 4,296,089 38.5 % Residential real estate 4,952,372 36.3 3,956,670 35.4 Securities-based loans 2,581,705 19.0 1,933,974 17.3 Construction and land 576,362 4.2 501,681 4.5 Commercial real estate 369,502 2.7 366,485 3.3 Home equity lines of credit 82,230 0.6 75,507 0.7 Other 35,803 0.3 40,407 0.3 Gross bank loans 13,631,287 100.0 % 11,170,813 100.0 % Unamortized loan discount, net (150 ) (1,822 ) Loans in process (32,909 ) (48,222 ) Unamortized loan fees, net (1,348 ) (1,980 ) Allowance for loan losses (94,293 ) (112,029 ) Loans held for investment, net $ 13,502,587 $ 11,006,760 At September 30, 2021 and December 31, 2020, Stifel Bancorp had loans outstanding to its executive officers and directors and executive officers and directors of certain affiliated entities in the amount of $26.1 At September 30, 2021 and December 31, 2020, we had loans held for sale of $156.1 million and $551.2 million, respectively. For the three months ended September 30, 2021 and 2020, we recognized gains of $4.4 million and $15.0 million, respectively, from the sale of originated loans, net of fees and costs. For the nine months ended September 30, 2021 and 2020, we recognized gains of $25.8 million and $28.0 million, respectively, from the sale of originated loans, net of fees and costs. During the three months ended June 30, 2021, we reclassified $217.1 million of primarily commercial loans and $285.6 million of deposits to held for sale. During the three months ended September 30, 2021, we sold $208.0 million in unpaid principal balance of loans and $215.1 million in deposits. Based upon the terms of the sale, we recognized a $7.4 million gain, which is reflected in other income on the consolidated statements of operations. At September 30, 2021 and December 31, 2020, loans, primarily consisting of residential and commercial real estate loans of $4.7 billion and $3.8 billion, respectively, were pledged at the Federal Home Loan Bank as collateral for borrowings. Accrued interest receivable for loans and loans held for sale at September 30, 2021 and December 21, 2020 was $23.8 million and $20.8 million, respectively, and is reported in other assets on the consolidated statement of financial condition. The following tables detail activity in the allowance for loan losses by portfolio segment for the three and nine months ended September 30, 2021 (in thousands) Three Months Ended September 30, 2021 Beginning Balance Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 46,943 $ (256 ) $ — $ — $ 46,687 Construction and land 15,953 (1,620 ) — — 14,333 Residential real estate 21,267 2,637 — — 23,904 Commercial real estate 11,903 (6,582 ) — — 5,321 Securities-based loans 2,519 808 — — 3,327 Home equity lines of credit 426 48 — — 474 Other 185 62 — — 247 $ 99,196 $ (4,903 ) $ — $ — $ 94,293 Nine Months Ended September 30, 2021 Beginning Balance Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 67,222 $ (15,333 ) $ (5,202 ) $ — $ 46,687 Construction and land 17,275 (2,942 ) — — 14,333 Residential real estate 16,300 7,604 — — 23,904 Commercial real estate 8,580 (3,259 ) — — 5,321 Securities-based loans 2,015 1,312 — — 3,327 Home equity lines of credit 374 100 — — 474 Other 263 (16 ) — — 247 $ 112,029 $ (12,534 ) $ (5,202 ) $ — $ 94,293 The provision for unfunded lending commitments was an expense of $4.2 million and a credit of $3.0 million for the three and nine months ended September 30, 2021, respectively. The provision for unfunded lending commitments was a credit of $3.0 million and an expense of $0.1 million for the three and nine months ended September 30, 2020, respectively. The provision for unfunded lending commitments is included in the provision for credit losses on the consolidated statement of operations. The expected credit losses for unfunded lending commitments, including standby letters of credit and binding unfunded loan commitments, are reported on the consolidated statement of financial condition in accounts payable and accrued expenses. The following tables detail activity in the allowance for loan losses by portfolio segment for the three and nine months ended September 30, 2020 (in thousands) Three Months Ended September 30, 2020 Beginning Balance Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 65,503 $ 10,303 $ (1 ) $ 4 $ 75,809 Residential real estate 24,043 (6,360 ) — — 17,683 Construction and land 13,075 (2,889 ) — — 10,186 Commercial real estate 10,647 (2,730 ) — — 7,917 Securities-based loans 1,807 95 — — 1,902 Home equity lines of credit 499 (205 ) — 87 381 Other 247 9 (22 ) 1 235 $ 115,821 $ (1,777 ) $ (23 ) $ 92 $ 114,113 Nine Months Ended September 30, 2020 Beginning Balance CECL Adoption Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 69,949 $ (19,940 ) $ 25,949 $ (153 ) $ 4 $ 75,809 Residential real estate 14,253 3,499 (69 ) — — 17,683 Construction and land 4,613 2,674 2,899 — — 10,186 Commercial real estate 3,564 791 3,562 — — 7,917 Securities-based loans 2,361 1,346 (1,805 ) — — 1,902 Home equity lines of credit 442 39 (188 ) — 88 381 Other 397 (145 ) 21 (40 ) 2 235 $ 95,579 $ (11,736 ) $ 30,369 $ (193 ) $ 94 $ 114,113 At September 30, 2021, we had $8.3 million of impaired loans, net of discounts, which included $0.2 million in troubled debt restructurings. The specific allowance on impaired loans at September 30, 2021 was $4.1 million. At December 31, 2020, we had $13.8 million of impaired loans, net of discounts, which included $0.2 million in troubled debt restructurings. The specific allowance on impaired loans at December 31, 2020 was $8.2 million. The gross interest income related to impaired loans, which would have been recorded, had these loans been current in accordance with their original terms, and the interest income recognized on these loans during the three and nine months ended September 30, 2021 and 2020, were insignificant to the consolidated financial statements. In December 2020, the U.S. federal government enacted the Consolidated Appropriations Act of 2021, which provided additional COVID-19 relief to American families and business, including extending TDR relief under the CARES Act until the earlier of December 31, 2021, or 60 days following the termination of the national emergency. The following tables present the aging of the recorded investment in past due loans at September 30, 2021 and December 31, 2020 by portfolio segment (in thousands) As of September 30, 2021 30 – 89 Days Past Due 90 or More Days Past Due Total Due Current Balance Total Commercial and industrial $ — $ 6,805 $ 6,805 $ 5,026,508 $ 5,033,313 Residential real estate 3,894 1,333 5,227 4,947,145 4,952,372 Securities-based loans — — — 2,581,705 2,581,705 Construction and land — — — 576,362 576,362 Commercial real estate — 33 33 369,469 369,502 Home equity lines of credit — — — 82,230 82,230 Other — — — 35,803 35,803 Total $ 3,894 $ 8,171 $ 12,065 $ 13,619,222 $ 13,631,287 As of September 30, 2021* Non-Accrual Restructured Nonperforming loans with no allowance Total Commercial and industrial $ 6,805 $ — $ — $ 6,805 Residential real estate 84 156 1,249 1,489 Commercial real estate 33 — — 33 Total $ 6,922 $ 156 $ 1,249 $ 8,327 * There were no loans past due 90 days and still accruing interest at September 30, 2021. As of December 31, 2020 30 – 89 Days Past Due 90 or More Days Past Due Total Past Due Current Balance Total Commercial and industrial $ 14 $ 12,237 $ 12,251 $ 4,283,838 $ 4,296,089 Residential real estate 4,554 1,249 5,803 3,950,867 3,956,670 Securities-based loans — — — 1,933,974 1,933,974 Construction and land — — — 501,681 501,681 Commercial real estate — 144 144 366,341 366,485 Home equity lines of credit 12 — 12 75,495 75,507 Other 31 — 31 40,376 40,407 Total $ 4,611 $ 13,630 $ 18,241 $ 11,152,572 $ 11,170,813 As of December 31, 2020* Non-Accrual Restructured Nonperforming loans with no allowance Total Commercial and industrial $ 12,251 $ — $ — $ 12,251 Residential real estate — 158 1,249 1,407 Commercial real estate 144 — — 144 Total $ 12,395 $ 158 $ 1,249 $ 13,802 * There were no loans past due 90 days and still accruing interest at December 31, 2020. Credit quality indicators As of September 30, 2021, bank loans were primarily extended to non-investment grade borrowers. Substantially all of these loans align with the U.S. Federal bank regulatory agencies’ definition of Pass. Loans meet the definition of Pass when they are performing and do not demonstrate adverse characteristics that are likely to result in a credit loss. A loan is determined to be impaired when principal or interest becomes 90 days past due or when collection becomes uncertain. At the time a loan is determined to be impaired, the accrual of interest and amortization of deferred loan origination fees is discontinued (“non-accrual status”), and any accrued and unpaid interest income is reversed. We closely monitor economic conditions and loan performance trends to manage and evaluate our exposure to credit risk. Trends in delinquency ratios are an indicator, among other considerations, of credit risk within our loan portfolio. The level of nonperforming assets represents another indicator of the potential for future credit losses. Accordingly, key metrics we track and use in evaluating the credit quality of our loan portfolio include delinquency and nonperforming asset rates, as well as charge-off rates and our internal risk ratings of the loan portfolio. In general, we are a secured lender. At September 30, 2021 and December 31, 2020, 98.9% and 98.8% of our loan portfolio was collateralized, respectively. Collateral is required in accordance with the normal credit evaluation process based upon the creditworthiness of the customer and the credit risk associated with the particular transaction. The Company uses the following definitions for risk ratings: Pass. A credit exposure rated pass has a continued expectation of timely repayment, all obligations of the borrower are current, and the obligor complies with material terms and conditions of the lending agreement. Special Mention. Extensions of credit that have potential weakness that deserve management’s close attention, and if left uncorrected may, at some future date, result in the deterioration of the repayment prospects or collateral position. Substandard. Obligor has a well-defined weakness that jeopardizes the repayment of the debt and has a high probability of payment default with the distinct possibility that the Company will sustain some loss if noted deficiencies are not corrected. Doubtful. Inherent weakness in the exposure makes the collection or repayment in full, based on existing facts, conditions and circumstances, highly improbable, and the amount of loss is uncertain. Substandard loans are regularly reviewed for impairment. Doubtful loans are considered impaired. When a loan is impaired the impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, or as a practical expedient, the observable market price of the loan or the fair value of the collateral if the loan is collateral dependent. Based on the most recent analysis performed, the risk category of our loan portfolio was as follows (in thousands) : As of September 30, 2021 Pass Special Substandard Doubtful Total Commercial and industrial $ 4,824,500 $ 91,090 $ 110,918 $ 6,805 $ 5,033,313 Residential real estate 4,951,039 — 84 1,249 4,952,372 Securities-based loans 2,581,705 — — — 2,581,705 Construction and land 542,122 14,240 20,000 — 576,362 Commercial real estate 362,738 — 6,731 33 369,502 Home equity lines of credit 82,230 — — — 82,230 Other 35,803 — — — 35,803 Total $ 13,380,137 $ 105,330 $ 137,733 $ 8,087 $ 13,631,287 As of December 31, 2020 Pass Special Substandard Doubtful Total Commercial and industrial $ 3,995,351 $ 105,759 $ 182,728 $ 12,251 $ 4,296,089 Residential real estate 3,955,421 — — 1,249 3,956,670 Securities-based loans 1,933,974 — — — 1,933,974 Construction and land 467,441 14,240 20,000 — 501,681 Commercial real estate 356,008 10,333 — 144 366,485 Home equity lines of credit 75,507 — — — 75,507 Other 40,407 — — — 40,407 Total $ 10,824,109 $ 130,332 $ 202,728 $ 13,644 $ 11,170,813 Term Loans Amortized Cost Basis by Origination Year – September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Commercial and industrial: Pass $ 1,303,613 $ 351,928 $ 376,203 $ 480,660 $ 245,320 $ 366,376 $ 1,700,400 $ 4,824,500 Special Mention — — 30,000 32,220 28,870 — — 91,090 Substandard — 512 27,255 46,085 26,382 7,731 2,953 110,918 Doubtful — — — — 6,805 — — 6,805 $ 1,303,613 $ 352,440 $ 433,458 $ 558,965 $ 307,377 $ 374,107 $ 1,703,353 $ 5,033,313 Residential real estate: Pass $ 1,890,145 $ 1,362,365 $ 646,445 $ 268,473 $ 222,351 $ 561,260 $ — $ 4,951,039 Special Mention — — — — — — — — Substandard — — — — — 84 — 84 Doubtful — — — — 149 1,100 — 1,249 $ 1,890,145 $ 1,362,365 $ 646,445 $ 268,473 $ 222,500 $ 562,444 $ — $ 4,952,372 Securities-based loans: Pass $ 5,897 $ 39,570 $ 93,576 $ 294 $ 140 $ 11,475 $ 2,430,753 $ 2,581,705 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ 5,897 $ 39,570 $ 93,576 $ 294 $ 140 $ 11,475 $ 2,430,753 $ 2,581,705 Construction and land: Pass $ 55,368 $ 111,262 $ 240,337 $ 65,446 $ 63,484 $ 6,225 $ — $ 542,122 Special Mention — — — 14,240 — — — 14,240 Substandard — — — 20,000 — — — 20,000 Doubtful — — — — — — — — $ 55,368 $ 111,262 $ 240,337 $ 99,686 $ 63,484 $ 6,225 $ — $ 576,362 Commercial real estate: Pass $ 64,963 $ 73,006 $ 148,581 $ 22,510 $ 36,438 $ 17,240 $ — $ 362,738 Special Mention — — — — — — — — Substandard — — — — — 6,731 — 6,731 Doubtful — — — 33 — — — 33 $ 64,963 $ 73,006 $ 148,581 $ 22,543 $ 36,438 $ 23,971 $ — $ 369,502 Home equity lines of credit: Pass $ — $ — $ — $ — $ — $ — $ 82,230 $ 82,230 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ — $ — $ — $ — $ — $ 82,230 $ 82,230 Other: Pass $ — $ 10,000 $ — $ 5,526 $ — $ 19,156 $ 1,121 $ 35,803 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ 10,000 $ — $ 5,526 $ — $ 19,156 $ 1,121 $ 35,803

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 8 – Goodwill and Intangible Assets The carrying amount of goodwill and intangible assets attributable to each of our reporting segments is presented in the following table (in thousands) December 31, 2020 Adjustments Write-off September 30, 2021 Goodwill Global Wealth Management $ 335,009 $ — $ — $ 335,009 Institutional Group 846,989 315 — 847,304 $ 1,181,998 $ 315 $ — $ 1,182,313 December 31, 2020 Adjustments Amortization September 30, 2021 Intangible assets Global Wealth Management $ 44,671 $ — $ (4,319 ) $ 40,352 Institutional Group 96,313 (43 ) (8,897 ) 87,373 $ 140,984 $ (43 ) $ (13,216 ) $ 127,725 The adjustments to goodwill and intangible assets during the nine months ended September 30, 2021 are primarily attributable to the acquisition of North Atlantic Capital Corporation in February 2021 Amortizable intangible assets consist of acquired customer relationships, trade name, investment banking backlog, and non-compete agreements that are amortized over their contractual or determined useful lives. Intangible assets as of September 30, 2021 and December 31, 2020 were as follows (in thousands) September 30, 2021 December 31, 2020 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Customer relationships $ 202,190 $ 93,819 $ 202,342 $ 85,152 Trade names 28,659 16,973 28,659 15,660 Non-compete agreements 9,240 5,302 9,240 4,229 Core deposits 8,615 5,944 8,615 4,809 Investment banking backlog 4,245 3,443 4,245 2,734 Acquired technology 840 583 840 373 $ 253,789 $ 126,064 $ 253,941 $ 112,957 Amortization expense related to intangible assets was $4.5 million and $4.7 million for the three months ended September 30, 2021 and 2020, respectively. Amortization expense related to intangible assets was $13.2 million and $14.5 million for the nine months ended September 30, 2021 and 2020, respectively. Amortization expense is included in other operating expenses in the consolidated statements of operations. The weighted-average remaining lives of the following intangible assets at September 30, 2021, are: customer relationships, 9.8 years; trade names, 8.6 years; non-compete agreements, 5.4 years; core deposits, 2.8 years; investment banking backlog, 7.4 years; and acquired technology, 1.0 years. We have an intangible asset that is not subject to amortization and is, therefore, not included in the table below. As of September 30, 2021, we expect amortization expense in future periods to be as follows (in thousands) Fiscal year Remainder of 2021 $ 4,395 2022 16,421 2023 14,601 2024 13,908 2025 12,067 Thereafter 64,215 $ 125,607

Borrowings and Federal Home Loa

Borrowings and Federal Home Loan Bank Advances	9 Months Ended
	Sep. 30, 2021
Short Term Debt Other Disclosures [Abstract]
Borrowings and Federal Home Loan Bank Advances	NOTE 9 – Borrowings and Federal Home Loan Bank Advances Our short-term financing is generally obtained through short-term bank line financing on an uncommitted, secured basis, securities lending arrangements, repurchase agreements, advances from the Federal Home Loan Bank, term loans, and committed bank line financing on an unsecured basis. We borrow from various banks on a demand basis with company-owned and customer securities pledged as collateral. The value of customer-owned securities used as collateral is not reflected in the consolidated statements of financial condition. We also have an unsecured, committed bank line available. Our uncommitted secured lines of credit at September 30, 2021, totaled $880.0 million with four banks and are dependent on having appropriate collateral, as determined by the bank agreements, to secure an advance under the line. The availability of our uncommitted lines is subject to approval by the individual banks each time an advance is requested and may be denied. Our peak daily borrowing on our uncommitted secured lines was $50.0 million during the nine months ended September 30, 2021. There are no compensating balance requirements under these arrangements. Any borrowings on secured lines of credit are generally utilized to finance certain fixed income securities. At September 30, 2021, we had no outstanding balances on our uncommitted secured lines of credit. The Federal Home Loan advances of $52.0 million as of September 30, 2021 are floating-rate advances. The weighted average interest rates on these advances during the three and nine months ended September 30, 2021 was 0.28% On May 27, 2021, the Company and Stifel entered into an unsecured revolving credit facility agreement (the “Credit Facility”). The Credit Facility has a maturity date of May 2026 and the lenders include a number of financial institutions. This committed unsecured borrowing facility provides for maximum borrowings of up to $500.0 million, with a sublimit of $200.0 million for the Company. Stifel may borrow up to $500.0 million under the Credit Facility, depending on the amount of outstanding borrowings of the Company. The interest rates on borrowings under the Credit Facility are variable and based on LIBOR, as adjusted. There were no borrowings outstanding on the Credit Facility as of September 30, 2021.

Senior Notes

Senior Notes	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Senior Notes	NOTE 10 – Senior Notes The following table summarizes our senior notes as of September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 December 31, 2020 4.25% senior notes, due 2024 (1) $ 500,000 $ 500,000 4.00% senior notes, due 2030 (2) 400,000 400,000 5.20% senior notes, due 2047 (3) 225,000 225,000 1,125,000 1,125,000 Debt issuance costs, net (11,790 ) (12,591 ) Senior notes, net $ 1,113,210 $ 1,112,409 (1) In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.25% senior notes due July 2024 (2) In May 2020, we sold in a registered underwritten public offering, $400.0 million in aggregate principal amount of 4.00% senior notes due May 2030 (3) October 2047 Our senior notes mature as follows, based upon contractual terms (in thousands) 2021 $ — 2022 — 2023 — 2024 500,000 2025 — Thereafter 625,000 $ 1,125,000

Bank Deposits

Bank Deposits	9 Months Ended
	Sep. 30, 2021
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Bank Deposits	NOTE 11 – Bank Deposits Deposits consist of interest-bearing demand deposits (primarily money market and savings accounts), non-interest bearing demand deposits, and certificates of deposit. Deposits at September 30, 2021 and December 31, 2020 were as follows (in thousands) September 30, 2021 December 31, 2020 Demand deposits (interest-bearing) $ 19,729,032 $ 16,886,953 Demand deposits (non-interest-bearing) 635,059 411,890 Certificates of deposit 34,783 97,654 $ 20,398,874 $ 17,396,497 The weighted-average interest rate on deposits was 0.03% and 0.09% at September 30, 2021 and December 31, 2020, respectively. Scheduled maturities of certificates of deposit at September 30, 2021 and December 31, 2020 were as follows (in thousands): September 30, 2021 December 31, 2020 Certificates of deposit, less than $100,000: Within one year $ 250 $ 2,719 One to three years 13 409 Three to five years — 254 $ 263 $ 3,382 Certificates of deposit, $100,000 and greater: Within one year $ 24,495 $ 63,650 One to three years 10,025 30,622 Three to five years — — 34,520 94,272 $ 34,783 $ 97,654 At September 30, 2021 and December 31, 2020, the amount of deposits includes related party deposits, primarily interest-bearing and time deposits of executive officers, directors, and their affiliates of $9.9 million and $6.7 million, respectively. Brokerage customers’ deposits were $18.6 billion and $16.0 billion, respectively.

Disclosures About Offsetting As

Disclosures About Offsetting Assets And Liabilities	9 Months Ended
	Sep. 30, 2021
Offsetting [Abstract]
Disclosures About Offsetting Assets And Liabilities	NOTE 12 – Disclosures About Offsetting Assets and Liabilities The following table provides information about financial assets and derivative assets that are subject to offset as of September 30, 2021 and December 31, 2020 (in thousands) As of September 30, 2021 Securities borrowing (1) Reverse repurchase agreements (2) Total Gross amounts of recognized assets $ 314,154 $ 598,535 $ 912,689 Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition 314,154 598,535 912,689 Gross amounts not offset in the statement of financial condition: Amounts available for offset (39,225 ) (10,655 ) (49,880 ) Available collateral (260,229 ) (584,240 ) (844,469 ) Net amount $ 14,700 $ 3,640 $ 18,340 As of December 31, 2020 Securities borrowing (1) Reverse repurchase agreements (2) Total Gross amounts of recognized assets $ 313,131 $ 217,930 $ 531,061 Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition 313,131 217,930 531,061 Gross amounts not offset in the statement of financial condition: Amounts available for offset (46,183 ) (17,992 ) (64,175 ) Available collateral (244,578 ) (199,110 ) (443,688 ) Net amount $ 22,370 $ 828 $ 23,198 (1) Securities borrowing transactions are included in receivables from brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 3 in the notes to consolidated financial statements for additional information on receivables from brokers, dealers, and clearing organizations. (2) Collateral received includes securities received by our company from the counterparty. These securities are not included on the consolidated statements of financial condition unless there is an event of default. The fair value of securities pledged as collateral was $594.9 million and $217.3 million at September 30, 2021 and December 31, 2020, respectively. The following table provides information about financial liabilities and derivative liabilities that are subject to offset as of September 30, 2021 and December 31, 2020 (in thousands) As of September 30, 2021 Securities lending (3) Repurchase agreements (4) Total Gross amounts of recognized liabilities $ (183,564 ) $ (195,451 ) $ (379,015 ) Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition (183,564 ) (195,451 ) (379,015 ) Gross amounts not offset in the statement of financial condition: Amounts available for offset 39,225 10,655 49,880 Collateral pledged 144,334 184,796 329,130 Net amount $ (5 ) $ — $ (5 ) As of December 31, 2020 Securities lending (3) Repurchase agreements (4) Total Gross amounts of recognized liabilities $ (145,124 ) $ (190,955 ) $ (336,079 ) Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition (145,124 ) (190,955 ) (336,079 ) Gross amounts not offset in the statement of financial condition: Amounts available for offset 46,183 17,992 64,175 Collateral pledged 98,925 172,963 271,888 Net amount $ (16 ) $ — $ (16 ) (3) Securities lending transactions are included in payables to brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 3 in the notes to consolidated financial statements for additional information on payables to brokers, dealers, and clearing organizations. (4) Collateral pledged includes the fair value of securities pledged by our company to the counterparty. These securities are included in the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counterparty includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.6 million and $200.2 million at September 30, 2021 and December 31, 2020, respectively.

Commitments, Guarantees, and Co

Commitments, Guarantees, and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments, Guarantees, and Contingencies	NOTE 13 – Commitments, Guarantees, and Contingencies Broker-Dealer Commitments and Guarantees In the normal course of business, we enter into underwriting commitments. Settlement of transactions relating to such underwriting commitments, which were open at September 30, 2021, had no material effect on the consolidated financial statements. As a part of our fixed income public finance operations, we enter into forward commitments to purchase agency mortgage-backed securities. In order to hedge the market interest rate risk to which we would otherwise be exposed between the date of the commitment and date of sale of the mortgage-backed securities, we enter into to be announced (“TBA”) security contracts with investors for generic mortgage-backed security at specific rates and prices to be delivered on settlement dates in the future. We may be subject to loss if the timing of, or the actual amount of, the mortgage-backed security differs significantly from the term and notional amount of the TBA security contract to which we entered. These TBA securities and related purchase commitment are accounted for at fair value. As of September 30, 2021, the fair value of the TBA securities and the estimated fair value of the purchase commitments were $109.9 We also provide guarantees to securities clearinghouses and exchanges under their standard membership agreement, which requires members to guarantee the performance of other members. Under the agreement, if another member becomes unable to satisfy its obligations to the clearinghouse, other members would be required to meet shortfalls. Our liability under these agreements is not quantifiable and may exceed the cash and securities we have posted as collateral. However, the potential requirement for us to make payments under these arrangements is considered remote. Accordingly, no liability has been recognized for these arrangements. Other Commitments In the ordinary course of business, Stifel Bancorp has commitments to extend credit in the form of commitments to originate loans, standby letters of credit, and lines of credit. See Note 20 in the notes to consolidated financial statements for further details. Concentration of Credit Risk We provide investment, capital-raising, and related services to a diverse group of domestic customers, including governments, corporations, and institutional and individual investors. Our exposure to credit risk associated with the non-performance of customers in fulfilling their contractual obligations pursuant to securities transactions can be directly impacted by volatile securities markets, credit markets, and regulatory changes. This exposure is measured on an individual customer basis and on a group basis for customers that share similar attributes. To reduce the potential for risk concentrations, counterparty credit limits have been implemented for certain products and are continually monitored in light of changing customer and market conditions. As of September 30, 2021, we did not have significant concentrations of credit risk with any one customer or counterparty, or any group of customers or counterparties.

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2021
Loss Contingency Information About Litigation Matters [Abstract]
Legal Proceedings	NOTE 14 – Legal Proceedings Our company and its subsidiaries are named in and subject to various proceedings and claims arising primarily from our securities business activities, including lawsuits, arbitration claims, class actions, and regulatory matters. Some of these claims seek substantial compensatory, punitive, or indeterminate damages. Our company and its subsidiaries are also involved in other reviews, investigations, and proceedings by governmental and self-regulatory organizations regarding our business, which may result in adverse judgments, settlements, fines, penalties, injunctions, and other relief. We are contesting allegations in these claims, and we believe that there are meritorious defenses in each of these lawsuits, arbitrations, and regulatory investigations. In view of the number and diversity of claims against our company, the number of jurisdictions in which litigation is pending, and the inherent difficulty of predicting the outcome of litigation and other claims, we cannot state with certainty what the eventual outcome of pending litigation or other claims will be. We have established reserves for potential losses that are probable and reasonably estimable that may result from pending and potential legal actions, investigations, and regulatory proceedings. In many cases, however, it is inherently difficult to determine whether any loss is probable or reasonably possible or to estimate the amount or range of any potential loss, particularly where proceedings may be in relatively early stages or where plaintiffs are seeking substantial or indeterminate damages. Matters frequently need to be more developed before a loss or range of loss can reasonably be estimated. In our opinion, based on currently available information, review with outside legal counsel, and consideration of amounts provided for in our consolidated financial statements with respect to these matters, including the matter described below, the ultimate resolution of these matters will not have a material adverse impact on our financial position and results of operations. However, resolution of one or more of these matters may have a material effect on the results of operations in any future period, depending upon the ultimate resolution of those matters and depending upon the level of income for such period. For matters where a reserve has not been established and for which we believe a loss is reasonably possible, as well as for matters where a reserve has been recorded but for which an exposure to loss in excess of the amount accrued is reasonably possible, based on currently available information, we believe that such losses will not have a material effect on our consolidated financial statements. Karegnondi Water Authority Stifel has been named as a defendant in a United States District Court, Eastern District of Michigan, Southern Division, litigation in connection with the underwriting of bonds to finance the Karegnondi Water Authority (“KWA”) pipeline, a new water pipeline intended to serve Flint, Michigan and surrounding areas. The lawsuit is filed against JP Morgan Chase, as senior manager, and Stifel and Wells Fargo, as co-managers, who underwrote the bonds for the KWA in 2014. The complaint alleges novel claims against the underwriter defendants, including conspiracy and professional negligence. We intend to defend vigorously against the allegations.

Regulatory Capital Requirements

Regulatory Capital Requirements	9 Months Ended
	Sep. 30, 2021
Regulatory Capital Requirements [Abstract]
Regulatory Capital Requirements	NOTE 15 – Regulatory Capital Requirements We operate in a highly regulated environment and are subject to capital requirements, which may limit distributions to our company from its subsidiaries. Distributions from our broker-dealer subsidiaries are subject to net capital rules. A broker-dealer that fails to comply with the SEC’s Uniform Net Capital Rule (Rule 15c3-1) may be subject to disciplinary actions by the SEC and self-regulatory organizations, such as FINRA, including censures, fines, suspension, or expulsion. Stifel has chosen to calculate its net capital under the alternative method, which prescribes that their net capital shall not be less than the greater of $1.0 million or two percent of aggregate debit balances (primarily receivables from customers) computed in accordance with the SEC’s Customer Protection Rule (Rule 15c3-3). Our other broker-dealer subsidiaries calculate their net capital under the aggregate indebtedness method, whereby their aggregate indebtedness may not be greater than fifteen times their net capital (as defined). At September 30, 2021, Stifel had net capital of $654.9 million, which was 49.8% of aggregate debit items and $628.6 million in excess of its minimum required net capital. At September 30, 2021, all of our other broker-dealer subsidiaries’ net capital exceeded the minimum net capital required under the SEC rule. Our international subsidiary, SNEL, is subject to the regulatory supervision and requirements of the Financial Conduct Authority (“FCA”) in the United Kingdom. At September 30, 2021, our international subsidiary’s capital and reserves were in excess of the financial resources requirement under the rules of the FCA. Our Canadian subsidiary, SNC, is subject to the regulatory supervision and requirements of the Investment Industry Regulatory Organization of Canada (“IIROC”). At September 30, 2021, SNC’s net capital and reserves were in excess of the financial resources requirement under the rules of the IIROC. Our company, as a bank holding company, Stifel Bank & Trust, Stifel Bank, Stifel Trust Company, N.A., and Stifel Trust Company, Delaware, N.A. (collectively, “banking subsidiaries”) are subject to various regulatory capital requirements administered by the Federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on our company’s and it’s banking subsidiaries’ financial results. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, our company and its banking subsidiaries must meet specific capital guidelines that involve quantitative measures of our assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. Our company’s and its banking subsidiaries’ capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Under the Basel III rules, the quantity and quality of regulatory capital increased, a capital conservation buffer was established, selected changes were made to the calculation of risk-weighted assets, and a new ratio, common equity Tier 1 was introduced, all of which are applicable to both our company and its banking subsidiaries. Our company and its banking subsidiaries are required to maintain minimum amounts and ratios of Total and Tier 1 capital (as defined) to risk-weighted assets (as defined), Tier 1 capital to average assets (as defined), and under rules defined in Basel III, Common equity Tier 1 capital to risk-weighted assets. Our company and its banking subsidiaries each calculate these ratios in order to assess compliance with both regulatory requirements and their internal capital policies. At current capital levels, our company and its banking subsidiaries are each categorized as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well capitalized,” our company and its banking subsidiaries must maintain total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios. The amounts and ratios for Stifel Financial Corp., Stifel Bank & Trust, and Stifel Bank as of September 30, 2021 are represented in the tables below (in thousands, except ratios). Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Stifel Financial Corp. Amount Ratio Amount Ratio Amount Ratio Common equity tier 1 capital $ 2,816,734 16.6 % $ 764,693 4.5 % $ 1,104,557 6.5 % Tier 1 capital 3,501,734 20.6 % 1,019,591 6.0 % 1,359,454 8.0 % Total capital 3,643,378 21.4 % 1,359,454 8.0 % 1,699,318 10.0 % Tier 1 leverage 3,501,734 12.0 % 1,164,911 4.0 % 1,456,139 5.0 % Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Stifel Bank & Trust Amount Ratio Amount Ratio Amount Ratio Common equity tier 1 capital $ 1,145,805 10.7 % $ 482,722 4.5 % $ 697,264 6.5 % Tier 1 capital 1,145,805 10.7 % 643,629 6.0 % 858,172 8.0 % Total capital 1,250,328 11.7 % 858,172 8.0 % 1,072,715 10.0 % Tier 1 leverage 1,145,805 7.0 % 651,241 4.0 % 814,051 5.0 % Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Stifel Bank Amount Ratio Amount Ratio Amount Ratio Common equity tier 1 capital $ 309,150 20.9 % $ 66,632 4.5 % $ 96,246 6.5 % Tier 1 capital 309,150 20.9 % 88,843 6.0 % 118,457 8.0 % Total capital 316,431 21.4 % 118,457 8.0 % 148,071 10.0 % Tier 1 leverage 309,150 7.1 % 174,525 4.0 % 218,157 5.0 %

Operating Leases

Operating Leases	9 Months Ended
	Sep. 30, 2021
Lessee Disclosure [Abstract]
Operating Leases	NOTE 16 – Operating Leases Our operating leases primarily relate to office space and office equipment with remaining lease terms of 1 to 15 years. At September 30, 2021 and December 31, 2020, operating lease right-of-use assets were $756.9 million and $793.2 million, respectively, and lease liabilities were $804.4 million and $839.8 million, respectively, included in accounts payable and accrued expenses in the consolidated statements of financial condition. The table below summarizes our net lease cost for the three and nine months ended September 30, 2021 and 2020 (in thousands) Three Months Ended September 30, 2021 2020 Operating lease cost $ 25,802 $ 25,251 Short-term lease cost 110 590 Variable lease cost 265 20 Sublease income (643 ) (997 ) Net lease cost $ 25,534 $ 24,864 Nine Months Ended September 30, 2021 2020 Operating lease cost $ 76,292 $ 73,172 Short-term lease cost 343 2,892 Variable lease cost 606 62 Sublease income (1,951 ) (2,901 ) Net lease cost $ 75,290 $ 73,225 Operating lease costs are included in occupancy and equipment rental in the consolidated statements of operations. The table below summarizes other information related to our operating leases as of and for the nine months ended September 30, 2021 (in thousands) Operating lease cash flows $ 73,589 Right-of-use assets obtained in exchange for new operating lease liabilities $ 32,189 Weighted-average remaining lease term 11.8 years Weighted-average discount rate 4.14 % The weighted average discount rate represents our company’s incremental borrowing rate at the lease inception date. The table below presents information about operating lease liabilities as of September 30, 2021, (in thousands, except percentages) Remainder of 2021 $ 25,387 2022 100,075 2023 98,372 2024 96,377 2025 94,537 Thereafter 617,407 Total undiscounted lease payments 1,032,155 Imputed interest (227,778 ) Total operating lease liabilities $ 804,377

Revenues from Contracts with Cu

Revenues from Contracts with Customers	9 Months Ended
	Sep. 30, 2021
Revenue From Contract With Customer [Abstract]
Revenues from Contracts with Customers	NOTE 17 – Revenues from Contracts with Customers The following table presents the Company’s total revenues broken out by revenues from contracts with customers and other sources of revenues for the three and nine months ended September 30, 2021 and 2020 (in thousands) Three Months Ended September 30, 2021 2020 Revenues from contracts with customers: Commissions $ 189,239 $ 172,654 Investment banking 372,279 218,134 Asset management and service fees 313,862 230,782 Other 5,092 15,329 Total revenue from contracts with customers 880,472 636,899 Other sources of revenue: Interest 141,844 114,411 Principal transactions 118,977 140,883 Other 13,668 4,929 Total revenues $ 1,154,961 $ 897,122 Nine Months Ended September 30, 2021 2020 Revenues from contracts with customers: Commissions $ 598,432 $ 560,780 Investment banking 1,088,010 614,637 Asset management and service fees 887,878 667,496 Other 30,331 32,408 Total revenue from contracts with customers 2,604,651 1,875,321 Other sources of revenue: Interest 402,975 403,956 Principal transactions 436,580 445,566 Other 27,298 18,571 Total revenues $ 3,471,504 $ 2,743,414 Revenue from contracts with customers is recognized when, or as, we satisfy our performance obligations by transferring the promised services to the customers. A service is transferred to a customer when, or as, the customer obtains control of that service. A performance obligation may be satisfied over time or at a point in time. Revenue from a performance obligation satisfied over time is recognized by measuring our progress in satisfying the performance obligation in a manner that depicts the transfer of the services to the customer. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that we determine the customer obtains control over the promised service. The amount of revenue recognized reflects the consideration we expect to be entitled to in exchange for those promised services (i.e., the “transaction price”). In determining the transaction price, we consider multiple factors, including the effects of variable consideration. Variable consideration is included in the transaction price only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainties with respect to the amount are resolved. In determining when to include variable consideration in the transaction price, we consider the range of possible outcomes, the predictive value of our past experiences, the time period of when uncertainties expect to be resolved and the amount of consideration that is susceptible to factors outside of our influence, such as market volatility or the judgment and actions of third parties. The following provides detailed information on the recognition of our revenues from contracts with customers: Commissions. We earn commission revenue by executing, settling, and clearing transactions for clients primarily in OTC and listed equity securities, insurance products, and options. Trade execution and clearing and custody services, when provided together, represent a single performance obligation as the services are not separately identifiable in the context of the contract. Commission revenues associated with combined trade execution and clearing and custody services, as well as trade execution services on a standalone basis, are recognized at a point in time on trade-date. Commission revenues are generally paid on settlement date and we record a receivable between trade-date and payment on settlement date. Investment Banking. We provide our clients with a full range of capital markets and financial advisory services. Capital markets services include underwriting and placement agent services in both the equity and debt capital markets, including private equity placements, initial public offerings, follow-on offerings, underwriting and distributing public and private debt. Capital raising revenues are recognized at a point in time on trade-date, as the client obtains the control and benefit of the capital markets offering at that point. Costs associated with capital raising transactions are deferred until the related revenue is recognized or the engagement is otherwise concluded, and are recorded on a gross basis within other operating expenses in the consolidated statements of operations as we are acting as a principal in the arrangement. Any expenses reimbursed by our clients are recognized as investment banking revenues. Revenues from financial advisory services primarily consist of fees generated in connection with merger, acquisition and restructuring transactions. Advisory fees from mergers and acquisitions engagements are recognized at a point in time when the related transaction is completed, as the performance obligation is to successfully broker a specific transaction. Fees received prior to the completion of the transaction are deferred within accounts payable and accrued expenses on the consolidated statements of financial condition. Advisory fees from restructuring engagements are recognized over time using a time elapsed measure of progress as our clients simultaneously receive and consume the benefits of those services as they are provided. A significant portion of the fees we receive for our advisory services are considered variable as they are contingent upon a future event (e.g., completion of a transaction or third party emergence from bankruptcy) and are excluded from the transaction price until the uncertainty associated with the variable consideration is subsequently resolved, which is expected to occur upon achievement of the specified milestone. Payment for advisory services are generally due promptly upon completion of a specified milestone or, for retainer fees, periodically over the course of the engagement. We recognize a receivable between the date of completion of the milestone and payment by the customer. Expenses associated with investment banking advisory engagements are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at the same time as the associated expense. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. All investment banking advisory expenses are recognized within other operating expenses on the consolidated statements of operations and any expenses reimbursed by our clients are recognized as investment banking revenues. Asset Management Fees. We earn management and performance fees in connection with investment advisory services provided to institutional and individual clients. Investment advisory fees are charged based on the value of assets in fee-based accounts and are affected by changes in the balances of client assets due to market fluctuations and levels of net new client assets. Fees are charged either in advance based on fixed rates applied to the value of the customers’ account at the beginning of the period or periodically based on contracted rates and account performance. Contracts can be terminated at any time with no incremental payments due to our company upon termination. If the contract is terminated by the customer fees are prorated for the period and fees charged for the post termination period are refundable to the customer. Disaggregation of Revenue The following tables present the Company’s revenues from contracts with customers by reportable segment disaggregated by major business activity and primary geographic regions for the three and nine months ended September 30, 2021 and 2020 (in thousands) Three Months Ended September 30, 2021 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 133,998 $ 55,241 $ — $ 189,239 Capital raising 11,580 152,481 — 164,061 Advisory fees — 208,218 — 208,218 Investment banking 11,580 360,699 — 372,279 Asset management 313,838 24 — 313,862 Other 5,206 — (114 ) 5,092 Total 464,622 415,964 (114 ) 880,472 Primary Geographic Region: United States 464,622 348,087 (114 ) 812,595 United Kingdom — 46,267 — 46,267 Canada — 13,088 — 13,088 Other — 8,522 — 8,522 $ 464,622 $ 415,964 $ (114 ) $ 880,472 Three Months Ended September 30, 2020 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 120,600 $ 52,054 $ — $ 172,654 Capital raising 8,113 129,179 — 137,292 Advisory fees — 80,842 — 80,842 Investment banking 8,113 210,021 — 218,134 Asset management 230,765 17 — 230,782 Other 14,535 — 794 15,329 Total 374,013 262,092 794 636,899 Primary Geographic Region: United States 374,013 209,141 794 583,948 United Kingdom — 30,959 — 30,959 Canada — 11,133 — 11,133 Other — 10,859 — 10,859 $ 374,013 $ 262,092 $ 794 $ 636,899 (1) Nine Months Ended September 30, 2021 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 421,156 $ 177,276 $ — $ 598,432 Capital raising 37,027 505,618 — 542,645 Advisory fees — 545,365 — 545,365 Investment banking 37,027 1,050,983 — 1,088,010 Asset management 887,794 84 — 887,878 Other 28,552 — 1,779 30,331 Total 1,374,529 1,228,343 1,779 2,604,651 Primary Geographic Region: United States 1,374,529 996,429 1,779 2,372,737 United Kingdom — 137,482 — 137,482 Canada — 64,145 — 64,145 Other — 30,287 — 30,287 $ 1,374,529 $ 1,228,343 $ 1,779 $ 2,604,651 Nine Months Ended September 30, 2020 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 373,653 $ 187,127 $ — $ 560,780 Capital raising 26,443 333,442 — 359,885 Advisory fees 19 254,733 — 254,752 Investment banking 26,462 588,175 — 614,637 Asset management 667,446 50 — 667,496 Other 30,104 — 2,304 32,408 Total 1,097,665 775,352 2,304 1,875,321 Primary Geographic Region: United States 1,097,665 609,328 2,304 1,709,297 United Kingdom — 110,053 — 110,053 Canada — 27,240 — 27,240 Other — 28,731 — 28,731 $ 1,097,665 $ 775,352 $ 2,304 $ 1,875,321 (1) See Note 21 for further break-out of revenues by geography. Information on Remaining Performance Obligations and Revenue Recognized from Past Performance We do not disclose information about remaining performance obligations pertaining to contracts that have an original expected duration of one year or less. The transaction price allocated to remaining unsatisfied or partially unsatisfied performance obligations with an original expected duration exceeding one year was not material at September 30, 2021. Investment banking advisory fees that are contingent upon completion of a specific milestone and fees associated with certain distribution services are also excluded as the fees are considered variable and not included in the transaction price at September 30, 2021. Contract Balances The timing of our revenue recognition may differ from the timing of payment by our customers. We record a receivable when revenue is recognized prior to payment and we have an unconditional right to payment. Alternatively, when payment precedes the provision of the related services, we record deferred revenue until the performance obligations are satisfied. We had receivables related to revenues from contracts with customers of $180.0 million and $148.6 million at September 30, 2021 and December 31, 2020, respectively. We had no significant impairments related to these receivables during the nine months ended September 30, 2021. Our deferred revenue primarily relates to retainer fees received in investment banking advisory engagements and investment advisory fees where the performance obligation has not yet been satisfied. Deferred revenue at September 30, 2021 and December 31, 2020 was $16.8 million and $12.1 million, respectively.

Interest Income and Interest Ex

Interest Income and Interest Expense	9 Months Ended
	Sep. 30, 2021
Banking And Thrift Interest [Abstract]
Interest Income and Interest Expense	NOTE 18 – Interest Income and Interest Expense The components of interest income and interest expense are as follows (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest income: Loans held for investment, net $ 95,075 $ 76,281 $ 274,693 $ 250,565 Investment securities 34,247 31,966 95,738 121,630 Margin balances 6,624 5,803 19,001 22,298 Financial instruments owned 3,581 2,924 9,019 10,357 Other 2,317 (2,563 ) 4,524 (894 ) $ 141,844 $ 114,411 $ 402,975 $ 403,956 Interest expense: Senior notes $ 11,850 $ 15,411 $ 35,924 $ 39,677 Bank deposits 1,111 1,478 3,608 13,324 Other (2,938 ) (3,067 ) (891 ) (1,738 ) $ 10,023 $ 13,822 $ 38,641 $ 51,263

Employee Incentive, Deferred Co

Employee Incentive, Deferred Compensation, And Retirement Plans	9 Months Ended
	Sep. 30, 2021
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]
Employee Incentive, Deferred Compensation, and Retirement Plans	NOTE 19 – Employee Incentive, Deferred Compensation, and Retirement Plans We maintain an incentive stock plan and a wealth accumulation plan (“the Plan”) that provides for the granting of stock options, stock appreciation rights, restricted stock, performance awards, stock units, and debentures (collectively, “deferred awards”) to our associates. We are permitted to issue new shares under all stock award plans approved by shareholders or to reissue our treasury shares. Stock awards issued under our company’s incentive stock plan are granted at market value at the date of grant. Our deferred awards generally vest ratably over a one- to ten-year Our stock-based compensation plans are administered by the Compensation Committee of the Board of Directors (“Compensation Committee”), which has the authority to interpret the plans, determine to whom awards may be granted under the plans, and determine the terms of each award. According to the incentive stock plan, we are authorized to grant an additional 8.2 million shares at September 30, 2021. Expense associated with our stock-based compensation, included in compensation and benefits expense in the consolidated statements of operations for our company’s incentive stock award plan was $46.1 million and $39.7 million for the three months ended September 30, 2021 and 2020, respectively, and $134.5 million and $116.0 million for the nine months ended September 30, 2021 and 2020, respectively. Deferred Awards A restricted stock unit represents the right to receive a share of the Company’s common stock at a designated time in the future without cash payment by the employee and is issued in lieu of cash incentive, principally for deferred compensation and employee retention plans. The restricted stock units vest on an annual basis over the next one to ten years and are distributable, if vested, at future specified dates. Restricted stock awards are restricted as to sale or disposition. These restrictions lapse over the next one to five years. Our company grants Performance-based Restricted Stock Units (“PRSUs”) to certain of its executive officers. Under the terms of the grants, the number of PRSUs that will vest and convert to shares will be based on the Company's achievement of the pre-determined performance objectives during the performance period. The PRSUs will be measured over a four-year five-year At September 30, 2021, there was unrecognized compensation cost for deferred awards of approximately $588.9 million, which is expected to be recognized over a weighted-average period of 2.6 years. Deferred Compensation Plans The Plan is provided to certain revenue producers, officers, and key administrative associates, whereby a certain percentage of their incentive compensation is deferred as defined by the Plan into company stock units, restricted stock, and debentures. Participants may elect to defer a portion of their incentive compensation. Deferred awards generally vest over a one- to ten-year Additionally, the Plan allows Stifel’s financial advisors who achieve certain levels of production the option to defer a certain percentage of their gross commissions. As stipulated by the Plan, the financial advisors will defer 5% of their gross commissions. The mandatory deferral is split between company restricted stock units and debentures. They have the option to defer an additional 1% of gross commissions into company stock units. In addition, certain revenue producers, upon joining the Company, may receive company stock units in lieu of transition cash payments. Deferred compensation related to these awards generally vests over a one- to eight-year Profit Sharing Plan Eligible U.S. associates of our company who have met certain service requirements may participate in the Stifel Financial Corp. Profit Sharing 401(k) Plan (the “401(k) Plan”). Associates are permitted within limitations imposed by tax law to make pre-tax contributions to the 401(k) Plan. We may match certain associate contributions or make additional contributions to the 401(k) Plan at our discretion. Our contributions to the 401(k) Plan were $3.8 million and $3.9 million for the three months ended September 30, 2021 and 2020, respectively and $11.4 million and $11.0 million for the nine months ended September 30, 2021 and 2020, respectively.

Off-Balance Sheet Credit Risk

Off-Balance Sheet Credit Risk	9 Months Ended
	Sep. 30, 2021
Concentration Risks Types No Concentration Percentage [Abstract]
Off-Balance Sheet Credit Risk	NOTE 20 – Off-Balance Sheet Credit Risk In the normal course of business, we execute, settle, and finance customer and proprietary securities transactions. These activities expose our company to off-balance sheet risk in the event that customers or other parties fail to satisfy their obligations. In accordance with industry practice, securities transactions generally settle within two business days after trade date. Should a customer or broker fail to deliver cash or securities as agreed, we may be required to purchase or sell securities at unfavorable market prices. We borrow and lend securities to facilitate the settlement process and finance transactions, utilizing customer margin securities held as collateral. We monitor the adequacy of collateral levels on a daily basis. We periodically borrow from banks on a collateralized basis, utilizing firm and customer margin securities in compliance with SEC rules. Should the counterparty fail to return customer securities pledged, we are subject to the risk of acquiring the securities at prevailing market prices in order to satisfy our customer obligations. We control our exposure to credit risk by continually monitoring our counterparties’ positions, and where deemed necessary, we may require a deposit of additional collateral and/or a reduction or diversification of positions. Our company sells securities it does not currently own (short sales) and is obligated to subsequently purchase such securities at prevailing market prices. We are exposed to risk of loss if securities prices increase prior to closing the transactions. We control our exposure to price risk from short sales through daily review and setting position and trading limits. We manage our risks associated with the aforementioned transactions through position and credit limits and the continuous monitoring of collateral. Additional collateral is required from customers and other counterparties when appropriate. We have accepted collateral in connection with resale agreements, securities borrowed transactions, and customer margin loans. Under many agreements, we are permitted to sell or repledge these securities held as collateral and use these securities to enter into securities lending arrangements or to deliver to counterparties to cover short positions. At September 30, 2021 and December 31, 2020, the fair value of securities accepted as collateral where we are permitted to sell or repledge the securities was $2.4 billion and $1.8 billion, respectively, and the fair value of the collateral that had been sold or repledged was $195.5 million and $191.0 million, respectively. We enter into interest rate derivative contracts to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Our derivative financial instruments are principally used to manage differences in the amount, timing, and duration of our known or expected cash payments related to certain variable-rate affiliated deposits. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for us making fixed-rate payments. Our interest rate hedging strategies may not work in all market environments and, as a result, may not be effective in mitigating interest rate risk. Derivatives’ notional contract amounts are not reflected as assets or liabilities in the consolidated statements of financial condition. Rather, the market or fair value of the derivative transactions are reported in the consolidated statements of financial condition as other assets or accounts payable and accrued expenses, as applicable. As of September 30, 2021, derivative balances were immaterial. In the ordinary course of business, Stifel Bancorp has commitments to originate loans, standby letters of credit, and lines of credit. Commitments to originate loans are agreements to lend to a customer as long as there is no violation of any condition established by the contract. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since a portion of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash commitments. Each customer’s creditworthiness is evaluated on a case-by-case basis. The amount of collateral obtained, if necessary, is based on the credit evaluation of the counterparty. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, commercial real estate, and residential real estate. At September 30, 2021 and December 31, 2020, Stifel Bancorp had outstanding commitments to originate loans aggregating $875.3 million and $889.0 million, respectively. The commitments extended over varying periods of time, with all commitments at September 30, 2021, scheduled to be disbursed in the following three months. Through Stifel Bancorp, in the normal course of business, we originate residential mortgage loans and sell them to investors. We may be required to repurchase mortgage loans that have been sold to investors in the event there are breaches of certain representations and warranties contained within the sales agreements. We may be required to repurchase mortgage loans that were sold to investors in the event that there was inadequate underwriting or fraud, or in the event that the loans become delinquent shortly after they are originated. We also may be required to indemnify certain purchasers and others against losses they incur in the event of breaches of representations and warranties and in various other circumstances, and the amount of such losses could exceed the repurchase amount of the related loans. Consequently, we may be exposed to credit risk associated with sold loans. Standby letters of credit are irrevocable conditional commitments issued by Stifel Bancorp to guarantee the performance of a customer to a third party. Financial standby letters of credit are primarily issued to support public and private borrowing arrangements, including commercial paper, bond financing, and similar transactions. Performance standby letters of credit are issued to guarantee performance of certain customers under non-financial contractual obligations. The credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loans to customers. Should Stifel Bancorp be obligated to perform under the standby letters of credit, it may seek recourse from the customer for reimbursement of amounts paid. At September 30, 2021 and December 31, 2020, Stifel Bancorp had outstanding letters of credit totaling $25.6 million and $31.8 million, respectively. A majority of the standby letters of credit commitments at September 30, 2021, have expiration terms that are less than one year. Lines of credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Lines of credit generally have fixed expiration dates. Stifel Bancorp uses the same credit policies in granting lines of credit as it does for on-balance sheet instruments. At September 30, 2021 and December 31, 2020, Stifel Bancorp had granted unused lines of credit to commercial and consumer borrowers aggregating $3.5 billion and $ 2.5 billion, respectively . We are required to evaluate our loan portfolio for any expected losses with recognition of an allowance for credit losses, when applicable. At September 30, 2021, the expected credit losses for unfunded lending commitments was $20.2 million.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Reporting	NOTE 21 – Segment Reporting We currently operate through the following three business segments: Global Wealth Management, Institutional Group, and various corporate activities combined in the Other segment. Our Global Wealth Management segment consists of two businesses, the Private Client Group and Stifel Bancorp. The Private Client Group includes branch offices and independent contractor offices of our broker-dealer subsidiaries located throughout the United States. These branches provide securities brokerage services, including the sale of equities, mutual funds, fixed income products, and insurance, as well as offering banking products to their clients through our bank subsidiaries, which provide residential, consumer, and commercial lending, as well as FDIC-insured deposit accounts to customers of our private client group and to the general public. The Institutional Group segment includes institutional sales and trading. It provides securities brokerage, trading, and research services to institutions, with an emphasis on the sale of equity and fixed income products. This segment also includes the management of and participation in underwritings for both corporate and public finance (exclusive of sales credits generated through the private client group, which are included in the Global Wealth Management segment), merger and acquisition, and financial advisory services. The Other segment includes interest income from stock borrow activities, unallocated interest expense, interest income and gains and losses from investments held, amortization of stock-based awards, and all unallocated overhead cost associated with the execution of orders; processing of securities transactions; custody of client securities; receipt, identification, and delivery of funds and securities; compliance with regulatory and legal requirements; internal financial accounting and controls; and general administration and acquisition charges. Information concerning operations in these segments of business for the three and nine months ended September 30, 2021 and 2020 is as follows (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net revenues: (1) Global Wealth Management $ 655,533 $ 526,836 $ 1,924,595 $ 1,615,574 Institutional Group 492,284 363,365 1,519,176 1,093,699 Other (2,879 ) (6,901 ) (10,908 ) (17,122 ) $ 1,144,938 $ 883,300 $ 3,432,863 $ 2,692,151 Income/(loss) before income taxes: Global Wealth Management $ 232,119 $ 178,930 $ 682,655 $ 529,422 Institutional Group 125,092 76,841 383,774 201,630 Other (100,709 ) (97,378 ) (318,010 ) (314,593 ) $ 256,502 $ 158,393 $ 748,419 $ 416,459 (1) No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2021 or 2020. The following table presents our company’s total assets on a segment basis at September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 December 31, 2020 Global Wealth Management $ 25,152,551 $ 21,743,202 Institutional Group 5,161,215 3,733,661 Other 506,568 1,127,391 $ 30,820,334 $ 26,604,254 We have operations in the United States, United Kingdom, Europe, and Canada. The Company’s foreign operations are conducted through its wholly owned subsidiaries, SNEL and SNC. Substantially all long-lived assets are located in the United States. Revenues, classified by the major geographic areas in which they are earned for the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 United States $ 1,067,901 $ 814,301 $ 3,142,337 $ 2,485,336 United Kingdom 57,413 45,705 177,138 147,097 Canada 9,523 10,713 76,535 24,338 Other 10,101 12,581 36,853 35,380 $ 1,144,938 $ 883,300 $ 3,432,863 $ 2,692,151

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 22 – Earnings Per Share (“EPS”) Basic EPS is computed by dividing earnings available to common shareholders by the weighted-average number of common shares outstanding. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity. Diluted earnings per share include dilutive stock options and stock units under the treasury stock method. The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net income $ 192,376 $ 120,527 $ 563,468 $ 315,003 Preferred dividends 9,689 9,897 26,267 19,584 Net income available to common shareholders $ 182,687 $ 110,630 $ 537,201 $ 295,419 Shares for basic and diluted calculation: Average shares used in basic computation 107,379 105,941 107,655 106,221 Dilutive effect of stock options and units (1) 11,096 7,835 10,700 7,347 Average shares used in diluted computation 118,475 113,775 118,355 113,568 Earnings per common share: Basic $ 1.70 $ 1.04 $ 4.99 $ 2.78 Diluted $ 1.54 $ 0.97 $ 4.54 $ 2.60 (1) Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. For the three and nine months ended September 30, 2021 and 2020, the anti-dilutive effect from restricted stock units was immaterial. Cash Dividends During the three and nine months ended September 30, 2021, we declared and paid cash dividends of $0.15 and $0.45 per common share. During the three and nine months ended September 30, 2020, we declared and paid cash dividends of $0.11 and $0.33 per common share.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Shareholders' Equity	NOTE 23 – Shareholders’ Equity Share Repurchase Program We have an ongoing authorization from the Board of Directors to repurchase our common stock in the open market or in negotiated transactions. At September 30, 2021, the maximum number of shares that may yet be purchased under this plan was 11.9 million. The repurchase program has no expiration date. These purchases may be made on the open market or in privately negotiated transactions, depending upon market conditions and other factors. Repurchased shares may be used to meet obligations under our company’s employee benefit plans and for general corporate purposes. During the three months ended September 30, 2021, we repurchased $44.8 million, or 0.7 million shares using existing Board authorizations at an average price of $66.74 per share to meet obligations under our company’s employee benefit plans and for general corporate purposes. During the nine months ended September 30, 2021, we repurchased $86.4 million, or 1.3 million shares using existing Board authorizations at an average price of $65.69 per share to meet obligations under our company’s employee benefit plans and for general corporate purposes. There were no share repurchases during the three months ended September 30, 2020. During the nine months ended September 30, 2020, we repurchased $56.5 million, or 1.7 million shares using existing Board authorizations at an average price of $33.08 per share to meet obligations under our company’s employee benefit plans and for general corporate purposes. Issuance of Common Stock During the nine months ended September 30, 2021, we issued 2.5 million shares, which were primarily reissued from treasury. Share issuances were primarily a result of the vesting and conversion transactions under our incentive stock award plans. Issuance of Preferred Stock On May 19, 2020, the Company issued $225.0 million of 6.125% Non-Cumulative Perpetual Preferred Stock, Series C, $1.00 par value, with a liquidation preference of $25,000 per share (equivalent to $25 liquidation preference per depositary share), which included the sale of $25.0 million of Series C Preferred, pursuant to the over-allotment option. When, as, and if declared by the board of directors of the Company, dividends will be payable at an annual rate of 6.125%, payable quarterly, in arrears. The Company may redeem the Series C preferred stock at its option, subject to regulatory approval, on or after June 15, 2025. On July 22, 2021, the Company completed an underwritten registered public offering of $300.0 million of 4.50% Non-Cumulative Perpetual Preferred Stock, Series D, $1.00 par value, with a liquidation preference of $25,000 per share (equivalent to $25 liquidation preference per depositary share). When, as, and if declared by the board of directors of the Company, dividends will be payable at an annual rate of 4.50%, payable quarterly, in arrears. The Company may redeem the Series D preferred stock at its option, subject to regulatory approval, on or after August 15, 2026. On August 20, 2021, the Company redeemed all of the outstanding 6.25% Non-Cumulative Perpetual Preferred Stock, Series A. The redemption price was $25.00 per depository share plus accrued and unpaid dividends to, but excluding, the date of redemption.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2021
Variable Interest Entity Not Primary Beneficiary Disclosures [Abstract]
Variable Interest Entities	NOTE 24 – Variable Interest Entities Our company’s involvement with VIEs is limited to entities used as investment vehicles and private equity funds, the establishment of Stifel Financial Capital Trusts, and our issuance of a convertible promissory note. We have formed several non-consolidated investment funds with third-party investors that are typically organized as limited liability companies (“LLCs”) or limited partnerships. These partnerships and LLCs have assets of $365.7 million at September 30, 2021. For those funds where we act as the general partner, our company’s economic interest is generally limited to management fee arrangements as stipulated by the fund operating agreements. We have generally provided the third-party investors with rights to terminate the funds or to remove us as the general partner. Management fee revenue earned by our company was insignificant during the three and nine months ended September 30, 2021 and 2020. In addition, our direct investment interest in these entities is insignificant at September 30, 2021. For the entities noted above that were determined to be VIEs, we have concluded that we are not the primary beneficiary, and therefore, we are not required to consolidate these entities. Debenture to Stifel Financial Capital Trusts We have completed private placements of cumulative trust preferred securities through Stifel Financial Capital Trust II, Stifel Financial Capital Trust III, and Stifel Financial Capital Trust IV (collectively, the “Trusts”). The Trusts are non-consolidated wholly owned business trust subsidiaries of our company and were established for the limited purpose of issuing trust securities to third parties and lending the proceeds to our company. The trust preferred securities represent an indirect interest in junior subordinated debentures purchased from our company by the Trusts, and we effectively provide for the full and unconditional guarantee of the securities issued by the Trusts. We make timely payments of interest to the Trusts as required by contractual obligations, which are sufficient to cover payments due on the securities issued by the Trusts, and believe that it is unlikely that any circumstances would occur that would make it necessary for our company to make payments related to these Trusts other than those required under the terms of the debenture agreements and the trust preferred securities agreements. The Trusts were determined to be VIEs because the holders of the equity investment at risk do not have adequate decision-making ability over the Trust’s activities. Our investment in the Trusts is not a variable interest, because equity interests are variable interests only to the extent that the investment is considered to be at risk. Because our investment was funded by the Trusts, it is not considered to be at risk.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	NOTE 25 – Subsequent Events We evaluate subsequent events that have occurred after the balance sheet date but before the financial statements are issued. There are two types of subsequent events: (1) recognized, or those that provide additional evidence about conditions that existed at the date of the balance sheet, including the estimates inherent in the process of preparing financial statements, and (2) non-recognized, or those that provide evidence about conditions that did not exist at the date of the balance sheet but arose after that date. Based on the evaluation, we did not identify any recognized subsequent events that would have required adjustment to the consolidated financial statements.

Nature of Operations, Basis o_2

Nature of Operations, Basis of Presentation, and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature Of Operations	Nature of Operations Stifel Financial Corp. (the “Company”), through its wholly owned subsidiaries, is principally engaged in retail brokerage; securities trading; investment banking; investment advisory; retail, consumer, and commercial banking; and related financial services. Our major geographic area of concentration is throughout the United States, with a growing presence in the United Kingdom, Europe, and Canada. Our company’s principal customers are individual investors, corporations, municipalities, and institutions.
Basis Of Presentation	Basis of Presentation The consolidated financial statements include Stifel Financial Corp. and its wholly owned subsidiaries, principally Stifel, Nicolaus & Company, Incorporated (“Stifel”), Keefe, Bruyette & Woods, Inc., Stifel Bancorp, Inc. (“Stifel Bancorp”), Stifel Nicolaus Canada Inc. (“SNC”), and Stifel Nicolaus Europe Limited (“SNEL”). Unless otherwise indicated, the terms “we,” “us,” “our,” or “our company” in this report refer to Stifel Financial Corp. and its wholly owned subsidiaries. We have prepared the accompanying unaudited consolidated financial statements pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Pursuant to these rules and regulations, we have omitted certain information and footnote disclosures we normally include in our annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles. In management’s opinion, we have made all adjustments (consisting only of normal, recurring adjustments, except as otherwise noted) necessary to fairly present our financial position, results of operations and cash flows. Our interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year. These financial statements and accompanying notes should be read in conjunction with the consolidated financial statements and the notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2020 on file with the SEC. On November 11, 2020, our Board approved a 50% stock dividend, in the form of a three-for-two Certain amounts from prior periods have been reclassified to conform to the current period’s presentation. The effect of these reclassifications on our company’s previously reported consolidated financial statements was not material.
Consolidation Policies	Consolidation Policies The consolidated financial statements include the accounts of Stifel Financial Corp. and its subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation. We have investments or interests in other entities for which we must evaluate whether to consolidate by determining whether we have a controlling financial interest or are considered to be the primary beneficiary. Under our current consolidation policy, which complies with the provisions of ASC 810 as amended by ASU 2015-02, we consolidate those entities where we have the power to direct the activities of the entity that most significantly impact the entity’s economic performance and the obligation to absorb losses of the entity or the rights to receive benefits from the entity that could potentially be significant to the entity. We determine whether we are the primary beneficiary of a variable interest entity (“VIE”) by performing an analysis of the VIE’s control structure, expected benefits and losses, and expected residual returns. This analysis includes a review of, among other factors, the VIE’s capital structure, contractual terms, which interests create or absorb benefits or losses, variability, related party relationships, and the design of the VIE. We reassess our evaluation of whether an entity is a VIE when certain reconsideration events occur. We reassess our determination of whether we are the primary beneficiary of a VIE on an ongoing basis based on current facts and circumstances. See Note 24 for additional information on VIEs.

New Accounting Pronouncements (

New Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Recently Adopted Accounting Guidance	Recently Adopted Accounting Guidance Income Taxes In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,” which is intended to simplify various aspects related to accounting for income taxes. This accounting update removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. We prospectively adopted the accounting update on January 1, 2021. The adoption did not have a material impact on our consolidated financial statements.
Revenue Recognition	Commissions. We earn commission revenue by executing, settling, and clearing transactions for clients primarily in OTC and listed equity securities, insurance products, and options. Trade execution and clearing and custody services, when provided together, represent a single performance obligation as the services are not separately identifiable in the context of the contract. Commission revenues associated with combined trade execution and clearing and custody services, as well as trade execution services on a standalone basis, are recognized at a point in time on trade-date. Commission revenues are generally paid on settlement date and we record a receivable between trade-date and payment on settlement date. Investment Banking. We provide our clients with a full range of capital markets and financial advisory services. Capital markets services include underwriting and placement agent services in both the equity and debt capital markets, including private equity placements, initial public offerings, follow-on offerings, underwriting and distributing public and private debt. Capital raising revenues are recognized at a point in time on trade-date, as the client obtains the control and benefit of the capital markets offering at that point. Costs associated with capital raising transactions are deferred until the related revenue is recognized or the engagement is otherwise concluded, and are recorded on a gross basis within other operating expenses in the consolidated statements of operations as we are acting as a principal in the arrangement. Any expenses reimbursed by our clients are recognized as investment banking revenues. Revenues from financial advisory services primarily consist of fees generated in connection with merger, acquisition and restructuring transactions. Advisory fees from mergers and acquisitions engagements are recognized at a point in time when the related transaction is completed, as the performance obligation is to successfully broker a specific transaction. Fees received prior to the completion of the transaction are deferred within accounts payable and accrued expenses on the consolidated statements of financial condition. Advisory fees from restructuring engagements are recognized over time using a time elapsed measure of progress as our clients simultaneously receive and consume the benefits of those services as they are provided. A significant portion of the fees we receive for our advisory services are considered variable as they are contingent upon a future event (e.g., completion of a transaction or third party emergence from bankruptcy) and are excluded from the transaction price until the uncertainty associated with the variable consideration is subsequently resolved, which is expected to occur upon achievement of the specified milestone. Payment for advisory services are generally due promptly upon completion of a specified milestone or, for retainer fees, periodically over the course of the engagement. We recognize a receivable between the date of completion of the milestone and payment by the customer. Expenses associated with investment banking advisory engagements are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at the same time as the associated expense. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. All investment banking advisory expenses are recognized within other operating expenses on the consolidated statements of operations and any expenses reimbursed by our clients are recognized as investment banking revenues. Asset Management Fees. We earn management and performance fees in connection with investment advisory services provided to institutional and individual clients. Investment advisory fees are charged based on the value of assets in fee-based accounts and are affected by changes in the balances of client assets due to market fluctuations and levels of net new client assets. Fees are charged either in advance based on fixed rates applied to the value of the customers’ account at the beginning of the period or periodically based on contracted rates and account performance. Contracts can be terminated at any time with no incremental payments due to our company upon termination. If the contract is terminated by the customer fees are prorated for the period and fees charged for the post termination period are refundable to the customer.

Receivables From And Payables_2

Receivables From And Payables To Brokers, Dealers And Clearing Organizations (Tables)	9 Months Ended
	Sep. 30, 2021
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Amounts Receivable From Brokers, Dealers, And Clearing Organizations	Amounts receivable from brokers, dealers, and clearing organizations at September 30, 2021 and December 31, 2020, included (in thousands) September 30, 2021 December 31, 2020 Deposits paid for securities borrowed $ 314,154 $ 313,131 Receivables from clearing organizations 131,469 229,070 Securities failed to deliver 42,806 7,291 $ 488,429 $ 549,492
Amounts Payable To Brokers, Dealers, And Clearing Organizations	Amounts payable to brokers, dealers, and clearing organizations at September 30, 2021 and December 31, 2020, included (in thousands) September 30, 2021 December 31, 2020 Deposits received from securities loaned $ 183,564 $ 145,124 Securities failed to receive 43,603 7,273 Payable to clearing organizations 18,111 25,540 $ 245,278 $ 177,937

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule Of Fair Value Of Investments In And Unfunded Commitments To Funds Measured At Net Asset Value	September 30, 2021 December 31, 2020 Fair value of investments Unfunded commitments Fair value of investments Unfunded commitments Money market funds $ 1,639 $ — $ 34,192 $ — Mutual funds 6,885 — 7,152 — Partnership interests 12,893 12,946 3,744 2,520 Private equity funds 2,286 1,203 1,489 1,203 Total $ 23,703 $ 14,149 $ 46,577 $ 3,723
Fair Value Of Assets And Liabilities Measured On Recurring Basis	September 30, 2021 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 16,829 $ 16,829 $ — $ — U.S. government agency securities 182,636 — 182,636 — Mortgage-backed securities: Agency 303,684 — 303,684 — Non-agency 19,697 — 19,697 — Asset-backed securities 74,783 — 5,849 68,934 Corporate securities: Fixed income securities 318,288 250 318,038 — Equity securities 91,874 90,648 1,226 — Sovereign debt 9,920 — 9,920 — State and municipal securities 162,821 — 162,821 — Loans 18,854 — — 18,854 Total financial instruments owned 1,199,386 107,727 1,003,871 87,788 Available-for-sale securities: U.S. government agency securities 2,268 — 2,268 — State and municipal securities 2,414 — 2,414 — Mortgage-backed securities: Agency 1,016,730 — 1,016,730 — Commercial 75,701 — 75,701 — Non-agency 581 — 581 — Corporate fixed income securities 820,839 — 820,839 — Asset-backed securities 323,932 — 323,932 — Total available-for-sale securities 2,242,465 — 2,242,465 — Investments: Corporate equity securities 25,198 16,443 1,001 7,754 Auction rate securities 12,912 — — 12,912 Other 60,745 10,233 14,547 35,965 Investments in funds and partnerships measured at NAV 22,064 Total investments 120,919 26,676 15,548 56,631 Cash equivalents measured at NAV 1,639 $ 3,564,409 $ 134,403 $ 3,261,884 $ 144,419 September 30, 2021 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 366,014 $ 366,014 $ — $ — U.S. government agency securities 44,638 — 44,638 — Agency mortgage-backed securities 109,887 — 109,887 — Corporate securities: Fixed income securities 161,529 — 161,529 — Equity securities 30,813 30,813 — — Other 8,147 — 8,147 — Total financial instruments sold, but not yet purchased $ 721,028 $ 396,827 $ 324,201 $ — Assets and liabilities measured at fair value on a recurring basis as of December 31, 2020, are presented below (in thousands) December 31, 2020 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 46,900 $ 46,900 $ — $ — U.S. government agency securities 56,450 — 56,450 — Agency mortgage-backed securities 216,434 — 216,434 — Corporate securities: Fixed income securities 194,575 4,474 190,101 — Equity securities 67,593 62,979 4,614 — State and municipal securities 96,150 — 96,150 — Other (1) 15,926 — 4,642 11,284 Total financial instruments owned 694,028 114,353 568,391 11,284 Available-for-sale securities: U.S. government agency securities 4,361 — 4,361 — State and municipal securities 2,453 — 2,453 — Mortgage-backed securities: Agency 793,410 — 793,410 — Commercial 95,613 — 95,613 — Non-agency 4,569 — 4,569 — Corporate fixed income securities 631,758 — 631,758 — Asset-backed securities 698,133 — 698,133 — Total available-for-sale securities 2,230,297 — 2,230,297 — Investments: Corporate equity securities 29,496 29,496 — — Auction rate securities 12,933 — — 12,933 Other 59,048 10,342 6,593 42,113 Investments in funds and partnerships measured at NAV 12,385 Total investments 113,862 39,838 6,593 55,046 Cash equivalents measured at NAV 34,192 $ 3,072,379 $ 154,191 $ 2,805,281 $ 66,330 (1) December 31, 2020 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 91,974 $ 91,974 $ — $ — Agency mortgage-backed securities 141,227 — 141,227 — Corporate securities: Fixed income securities 162,626 4,094 158,532 — Equity securities 30,848 30,848 — — Other (2) 11,303 — 11,303 — Total financial instruments sold, but not yet purchased $ 437,978 $ 126,916 $ 311,062 $ — (2)
Schedule Of Changes In Fair Value Associated With Level 3 Financial Instruments	Three Months Ended September 30, 2021 Financial instruments owned Investments Asset-backed Securities Loans Corporate Equity Securities Auction Securities Other Balance at June 30, 2021 $ 1,815 $ 22,839 $ 8,754 $ 12,959 $ 34,666 Unrealized gains/(losses) — — (1,000 ) (47 ) 1,299 Purchases 68,028 3,365 — — — Sales — (7,350 ) — — — Redemptions (839 ) — — — — Transfers out of Level 3 (70 ) — — — — Net change 67,119 (3,985 ) (1,000 ) (47 ) 1,299 Balance at September 30, 2021 $ 68,934 $ 18,854 $ 7,754 $ 12,912 $ 35,965 Nine Months Ended September 30, 2021 Financial instruments owned Investments Asset-backed Securities Loans Corporate Equity Securities Auction Securities Other Balance at December 31, 2020 $ 9 $ 11,275 $ — $ 12,933 $ 42,113 Unrealized gains/(losses) (3,000 ) (48 ) (1,000 ) (21 ) 782 Realized gains 7,361 — — — — Purchases 68,104 14,977 3,000 — — Sales — (7,350 ) — — — Redemptions (10,400 ) — — — — Transfers into Level 3 — — 5,754 — — Transfers out of Level 3 (70 ) — — — — Category transfers 6,930 — — — (6,930 ) Net change 68,925 7,579 7,754 (21 ) (6,148 ) Balance at September 30, 2021 $ 68,934 $ 18,854 $ 7,754 $ 12,912 $ 35,965
Schedule Of Fair Value Of Financial Instruments	September 30, 2021 December 31, 2020 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Cash and cash equivalents $ 2,054,273 $ 2,054,273 $ 2,279,274 $ 2,279,274 Cash segregated for regulatory purposes 26,095 26,095 172,932 172,932 Securities purchased under agreements to resell 598,535 598,535 217,930 217,930 Financial instruments owned 1,199,386 1,199,386 694,028 694,028 Available-for-sale securities 2,242,465 2,242,465 2,230,297 2,230,297 Held-to-maturity securities 5,347,821 5,354,129 4,117,384 4,107,960 Bank loans 13,502,587 13,584,900 11,006,760 11,088,058 Loans held for sale 156,110 156,110 551,248 551,248 Investments 120,919 120,919 113,862 113,862 Financial liabilities: Securities sold under agreements to repurchase $ 195,451 $ 195,451 $ 190,955 $ 190,955 Bank deposits 20,398,874 20,161,189 17,396,497 17,192,722 Financial instruments sold, but not yet purchased 721,028 721,028 437,978 437,978 Federal Home Loan Bank advances 52,000 52,000 — — Senior notes 1,113,210 1,243,147 1,112,409 1,265,669 Debentures to Stifel Financial Capital Trusts 60,000 46,130 60,000 41,071
Estimated Fair Values Of Financial Instruments Not Measured At Fair Value	September 30, 2021 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 2,052,634 $ 2,052,634 $ — $ — Cash segregated for regulatory purposes 26,095 26,095 — — Securities purchased under agreements to resell 598,535 393,097 205,438 — Held-to-maturity securities 5,354,129 — 5,212,387 141,742 Bank loans 13,584,900 — 13,584,900 — Loans held for sale 156,110 — 156,110 — Financial liabilities: Securities sold under agreements to repurchase $ 195,451 $ — $ 195,451 $ — Bank deposits 20,161,189 — 20,161,189 — Federal Home Loan Bank advances 52,000 52,000 — — Senior notes 1,243,147 1,243,147 — — Debentures to Stifel Financial Capital Trusts 46,130 — — 46,130 December 31, 2020 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 2,245,082 $ 2,245,082 $ — $ — Cash segregated for regulatory purposes 172,932 172,932 — — Securities purchased under agreements to resell 217,930 164,094 53,836 — Held-to-maturity securities 4,107,960 — 3,943,944 164,016 Bank loans 11,088,058 — 11,088,058 — Loans held for sale 551,248 — 551,248 — Financial liabilities: Securities sold under agreements to repurchase $ 190,955 $ — $ 190,955 $ — Bank deposits 17,192,722 — 17,192,722 — Senior notes 1,265,669 1,265,669 — — Debentures to Stifel Financial Capital Trusts 41,071 — — 41,071

Financial Instruments Owned A_2

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Tables)	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Components Of Trading Securities Owned And Trading Securities Sold, But Not Yet Purchased	The components of financial instruments owned and financial instruments sold, but not yet purchased, at September 30, 2021 and December 31, 2020 are as follows (in thousands) September 30, 2021 December 31, 2020 Financial instruments owned: U.S. government securities $ 16,829 $ 46,900 U.S. government agency securities 182,636 56,450 Mortgage-backed securities: Agency 303,684 216,434 Non-agency 19,697 107 Asset-backed securities 74,783 3,394 Corporate securities: Fixed income securities 318,288 194,575 Equity securities 91,874 67,593 Sovereign debt 9,920 1,150 State and municipal securities 162,821 96,150 Loans 18,854 11,275 $ 1,199,386 $ 694,028 Financial instruments sold, but not yet purchased: U.S. government securities $ 366,014 $ 91,974 U.S. government agency securities 44,638 — Agency mortgage-backed securities 109,887 141,227 Corporate securities: Fixed income securities 161,529 162,626 Equity securities 30,813 30,848 Other (1) 8,147 11,303 $ 721,028 $ 437,978 (1) Includes sovereign debt and state and municipal securities.

Available-For-Sale And Held-T_2

Available-For-Sale And Held-To-Maturity Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Investments Debt And Equity Securities [Abstract]
Schedule Of Amortized Cost And Fair Values Of Available For Sale Securities And Held To Maturity Securities	The following tables provide a summary of the amortized cost and fair values of the available-for-sale securities and held-to-maturity securities at September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated Fair Value Available-for-sale securities U.S. government agency securities $ 2,249 $ 19 $ — $ 2,268 State and municipal securities 2,378 36 — 2,414 Mortgage-backed securities: Agency 1,011,466 11,408 (6,144 ) 1,016,730 Commercial 73,187 2,514 — 75,701 Non-agency 581 — — 581 Corporate fixed income securities 803,835 19,677 (2,673 ) 820,839 Asset-backed securities 322,322 3,546 (1,936 ) 323,932 $ 2,216,018 $ 37,200 $ (10,753 ) $ 2,242,465 Held-to-maturity securities (2) Asset-backed securities $ 5,347,821 $ 9,315 $ (3,007 ) $ 5,354,129 December 31, 2020 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated Fair Value Available-for-sale securities U.S. government agency securities $ 4,293 $ 68 $ — $ 4,361 State and municipal securities 2,395 58 — 2,453 Mortgage-backed securities: Agency 777,025 16,401 (16 ) 793,410 Commercial 91,237 4,376 — 95,613 Non-agency 4,550 28 (9 ) 4,569 Corporate fixed income securities 604,662 27,096 — 631,758 Asset-backed securities 700,177 3,522 (5,566 ) 698,133 $ 2,184,339 $ 51,549 $ (5,591 ) $ 2,230,297 Held-to-maturity securities (2) Asset-backed securities $ 4,117,384 $ 8,111 $ (17,535 ) $ 4,107,960 (1) Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive loss. (2) Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.
Schedule Of Amortized Cost And Fair Values Of Debt Securities By Contractual Maturity	The table below summarizes the amortized cost and fair values of our securities by contractual maturity at September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 December 31, 2020 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Available-for-sale securities Within one year $ 25,169 $ 25,321 $ 143,462 $ 144,362 After one year through three years 223,518 230,667 134,040 137,625 After three years through five years 213,452 222,208 247,907 266,139 After five years through ten years 458,386 461,232 429,921 435,111 After ten years 1,295,493 1,303,037 1,229,009 1,247,060 $ 2,216,018 $ 2,242,465 $ 2,184,339 $ 2,230,297 Held-to-maturity securities After three years through five years $ — $ — $ 17,460 $ 17,460 After five years through ten years 2,267,811 2,267,120 1,932,439 1,926,425 After ten years 3,080,010 3,087,009 2,167,485 2,164,075 $ 5,347,821 $ 5,354,129 $ 4,117,384 $ 4,107,960
Contractual Maturities	The maturities of our available-for-sale (fair value) and held-to-maturity (amortized cost) securities at September 30, 2021, are as follows ( in thousands Within 1 Year 1-5 Years 5-10 Years After 10 Years Total Available-for-sale securities (1) U.S. government agency securities $ 2,064 $ 204 $ — $ — $ 2,268 State and municipal securities — — 2,414 — 2,414 Mortgage-backed securities: Agency 56 96 63,321 953,257 1,016,730 Commercial — — — 75,701 75,701 Non-agency — — — 581 581 Corporate fixed income securities 23,201 452,575 345,063 — 820,839 Asset-backed securities — — 50,434 273,498 323,932 $ 25,321 $ 452,875 $ 461,232 $ 1,303,037 $ 2,242,465 Held-to-maturity securities Asset-backed securities $ — $ — $ 2,267,811 $ 3,080,010 $ 5,347,821 (1) Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis.
Schedule Of Gross Unrealized Losses And The Estimated Fair Value By Length Of Time	The following table shows the gross unrealized losses and fair value of the Company’s investment securities with unrealized losses, aggregated by investment category and length of time the individual investment securities have been in continuous unrealized loss positions, at September 30, 2021 (in thousands) Less than 12 months 12 months or more Total Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Agency mortgage-backed securities $ (6,142 ) $ 618,905 $ (2 ) $ 332 $ (6,144 ) $ 619,237 Corporate fixed income securities (2,673 ) 181,665 — — (2,673 ) 181,665 Asset-backed securities (1,645 ) 116,790 (291 ) 51,144 (1,936 ) 167,934 $ (10,460 ) $ 917,360 $ (293 ) $ 51,476 $ (10,753 ) $ 968,836
Schedule Of Amortized Cost Of Held-To-Maturity Securities By Credit Quality Indicator	The following table shows the amortized cost of our held-to-maturity securities by credit quality indicator at September 30, 2021 (in thousands) AAA AA A C Total Held-to-maturity securities Asset-backed securities $ 1,104,716 $ 4,235,714 $ 5,000 $ 2,391 $ 5,347,821

Bank Loans (Tables)

Bank Loans (Tables)	9 Months Ended
	Sep. 30, 2021
Receivables [Abstract]
Schedule Of Balance And Associated Percentage Of Each Major Loan Category In Bank Loan Portfolio	September 30, 2021 December 31, 2020 Balance Percent Balance Percent Commercial and industrial $ 5,033,313 36.9 % $ 4,296,089 38.5 % Residential real estate 4,952,372 36.3 3,956,670 35.4 Securities-based loans 2,581,705 19.0 1,933,974 17.3 Construction and land 576,362 4.2 501,681 4.5 Commercial real estate 369,502 2.7 366,485 3.3 Home equity lines of credit 82,230 0.6 75,507 0.7 Other 35,803 0.3 40,407 0.3 Gross bank loans 13,631,287 100.0 % 11,170,813 100.0 % Unamortized loan discount, net (150 ) (1,822 ) Loans in process (32,909 ) (48,222 ) Unamortized loan fees, net (1,348 ) (1,980 ) Allowance for loan losses (94,293 ) (112,029 ) Loans held for investment, net $ 13,502,587 $ 11,006,760
Activity In The Allowance For Loan Losses By Portfolio Segment	Three Months Ended September 30, 2021 Beginning Balance Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 46,943 $ (256 ) $ — $ — $ 46,687 Construction and land 15,953 (1,620 ) — — 14,333 Residential real estate 21,267 2,637 — — 23,904 Commercial real estate 11,903 (6,582 ) — — 5,321 Securities-based loans 2,519 808 — — 3,327 Home equity lines of credit 426 48 — — 474 Other 185 62 — — 247 $ 99,196 $ (4,903 ) $ — $ — $ 94,293 Nine Months Ended September 30, 2021 Beginning Balance Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 67,222 $ (15,333 ) $ (5,202 ) $ — $ 46,687 Construction and land 17,275 (2,942 ) — — 14,333 Residential real estate 16,300 7,604 — — 23,904 Commercial real estate 8,580 (3,259 ) — — 5,321 Securities-based loans 2,015 1,312 — — 3,327 Home equity lines of credit 374 100 — — 474 Other 263 (16 ) — — 247 $ 112,029 $ (12,534 ) $ (5,202 ) $ — $ 94,293 Three Months Ended September 30, 2020 Beginning Balance Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 65,503 $ 10,303 $ (1 ) $ 4 $ 75,809 Residential real estate 24,043 (6,360 ) — — 17,683 Construction and land 13,075 (2,889 ) — — 10,186 Commercial real estate 10,647 (2,730 ) — — 7,917 Securities-based loans 1,807 95 — — 1,902 Home equity lines of credit 499 (205 ) — 87 381 Other 247 9 (22 ) 1 235 $ 115,821 $ (1,777 ) $ (23 ) $ 92 $ 114,113 Nine Months Ended September 30, 2020 Beginning Balance CECL Adoption Provision Charge-offs Recoveries Ending Balance Commercial and industrial $ 69,949 $ (19,940 ) $ 25,949 $ (153 ) $ 4 $ 75,809 Residential real estate 14,253 3,499 (69 ) — — 17,683 Construction and land 4,613 2,674 2,899 — — 10,186 Commercial real estate 3,564 791 3,562 — — 7,917 Securities-based loans 2,361 1,346 (1,805 ) — — 1,902 Home equity lines of credit 442 39 (188 ) — 88 381 Other 397 (145 ) 21 (40 ) 2 235 $ 95,579 $ (11,736 ) $ 30,369 $ (193 ) $ 94 $ 114,113
Aging Of The Recorded Investment In Past Due Loans	As of September 30, 2021 30 – 89 Days Past Due 90 or More Days Past Due Total Due Current Balance Total Commercial and industrial $ — $ 6,805 $ 6,805 $ 5,026,508 $ 5,033,313 Residential real estate 3,894 1,333 5,227 4,947,145 4,952,372 Securities-based loans — — — 2,581,705 2,581,705 Construction and land — — — 576,362 576,362 Commercial real estate — 33 33 369,469 369,502 Home equity lines of credit — — — 82,230 82,230 Other — — — 35,803 35,803 Total $ 3,894 $ 8,171 $ 12,065 $ 13,619,222 $ 13,631,287 As of September 30, 2021* Non-Accrual Restructured Nonperforming loans with no allowance Total Commercial and industrial $ 6,805 $ — $ — $ 6,805 Residential real estate 84 156 1,249 1,489 Commercial real estate 33 — — 33 Total $ 6,922 $ 156 $ 1,249 $ 8,327 * There were no loans past due 90 days and still accruing interest at September 30, 2021. As of December 31, 2020 30 – 89 Days Past Due 90 or More Days Past Due Total Past Due Current Balance Total Commercial and industrial $ 14 $ 12,237 $ 12,251 $ 4,283,838 $ 4,296,089 Residential real estate 4,554 1,249 5,803 3,950,867 3,956,670 Securities-based loans — — — 1,933,974 1,933,974 Construction and land — — — 501,681 501,681 Commercial real estate — 144 144 366,341 366,485 Home equity lines of credit 12 — 12 75,495 75,507 Other 31 — 31 40,376 40,407 Total $ 4,611 $ 13,630 $ 18,241 $ 11,152,572 $ 11,170,813 As of December 31, 2020* Non-Accrual Restructured Nonperforming loans with no allowance Total Commercial and industrial $ 12,251 $ — $ — $ 12,251 Residential real estate — 158 1,249 1,407 Commercial real estate 144 — — 144 Total $ 12,395 $ 158 $ 1,249 $ 13,802 * There were no loans past due 90 days and still accruing interest at December 31, 2020.
Risk Category Of Loan Portfolio	As of September 30, 2021 Pass Special Substandard Doubtful Total Commercial and industrial $ 4,824,500 $ 91,090 $ 110,918 $ 6,805 $ 5,033,313 Residential real estate 4,951,039 — 84 1,249 4,952,372 Securities-based loans 2,581,705 — — — 2,581,705 Construction and land 542,122 14,240 20,000 — 576,362 Commercial real estate 362,738 — 6,731 33 369,502 Home equity lines of credit 82,230 — — — 82,230 Other 35,803 — — — 35,803 Total $ 13,380,137 $ 105,330 $ 137,733 $ 8,087 $ 13,631,287 As of December 31, 2020 Pass Special Substandard Doubtful Total Commercial and industrial $ 3,995,351 $ 105,759 $ 182,728 $ 12,251 $ 4,296,089 Residential real estate 3,955,421 — — 1,249 3,956,670 Securities-based loans 1,933,974 — — — 1,933,974 Construction and land 467,441 14,240 20,000 — 501,681 Commercial real estate 356,008 10,333 — 144 366,485 Home equity lines of credit 75,507 — — — 75,507 Other 40,407 — — — 40,407 Total $ 10,824,109 $ 130,332 $ 202,728 $ 13,644 $ 11,170,813
Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis	Term Loans Amortized Cost Basis by Origination Year – September 30, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Commercial and industrial: Pass $ 1,303,613 $ 351,928 $ 376,203 $ 480,660 $ 245,320 $ 366,376 $ 1,700,400 $ 4,824,500 Special Mention — — 30,000 32,220 28,870 — — 91,090 Substandard — 512 27,255 46,085 26,382 7,731 2,953 110,918 Doubtful — — — — 6,805 — — 6,805 $ 1,303,613 $ 352,440 $ 433,458 $ 558,965 $ 307,377 $ 374,107 $ 1,703,353 $ 5,033,313 Residential real estate: Pass $ 1,890,145 $ 1,362,365 $ 646,445 $ 268,473 $ 222,351 $ 561,260 $ — $ 4,951,039 Special Mention — — — — — — — — Substandard — — — — — 84 — 84 Doubtful — — — — 149 1,100 — 1,249 $ 1,890,145 $ 1,362,365 $ 646,445 $ 268,473 $ 222,500 $ 562,444 $ — $ 4,952,372 Securities-based loans: Pass $ 5,897 $ 39,570 $ 93,576 $ 294 $ 140 $ 11,475 $ 2,430,753 $ 2,581,705 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ 5,897 $ 39,570 $ 93,576 $ 294 $ 140 $ 11,475 $ 2,430,753 $ 2,581,705 Construction and land: Pass $ 55,368 $ 111,262 $ 240,337 $ 65,446 $ 63,484 $ 6,225 $ — $ 542,122 Special Mention — — — 14,240 — — — 14,240 Substandard — — — 20,000 — — — 20,000 Doubtful — — — — — — — — $ 55,368 $ 111,262 $ 240,337 $ 99,686 $ 63,484 $ 6,225 $ — $ 576,362 Commercial real estate: Pass $ 64,963 $ 73,006 $ 148,581 $ 22,510 $ 36,438 $ 17,240 $ — $ 362,738 Special Mention — — — — — — — — Substandard — — — — — 6,731 — 6,731 Doubtful — — — 33 — — — 33 $ 64,963 $ 73,006 $ 148,581 $ 22,543 $ 36,438 $ 23,971 $ — $ 369,502 Home equity lines of credit: Pass $ — $ — $ — $ — $ — $ — $ 82,230 $ 82,230 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ — $ — $ — $ — $ — $ 82,230 $ 82,230 Other: Pass $ — $ 10,000 $ — $ 5,526 $ — $ 19,156 $ 1,121 $ 35,803 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ 10,000 $ — $ 5,526 $ — $ 19,156 $ 1,121 $ 35,803

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Carrying Amount of Goodwill and Intangible Assets	The carrying amount of goodwill and intangible assets attributable to each of our reporting segments is presented in the following table (in thousands) December 31, 2020 Adjustments Write-off September 30, 2021 Goodwill Global Wealth Management $ 335,009 $ — $ — $ 335,009 Institutional Group 846,989 315 — 847,304 $ 1,181,998 $ 315 $ — $ 1,182,313 December 31, 2020 Adjustments Amortization September 30, 2021 Intangible assets Global Wealth Management $ 44,671 $ — $ (4,319 ) $ 40,352 Institutional Group 96,313 (43 ) (8,897 ) 87,373 $ 140,984 $ (43 ) $ (13,216 ) $ 127,725
Intangible Assets	Intangible assets as of September 30, 2021 and December 31, 2020 were as follows (in thousands) September 30, 2021 December 31, 2020 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Customer relationships $ 202,190 $ 93,819 $ 202,342 $ 85,152 Trade names 28,659 16,973 28,659 15,660 Non-compete agreements 9,240 5,302 9,240 4,229 Core deposits 8,615 5,944 8,615 4,809 Investment banking backlog 4,245 3,443 4,245 2,734 Acquired technology 840 583 840 373 $ 253,789 $ 126,064 $ 253,941 $ 112,957
Amortization Expense in Future Periods	As of September 30, 2021, we expect amortization expense in future periods to be as follows (in thousands) Fiscal year Remainder of 2021 $ 4,395 2022 16,421 2023 14,601 2024 13,908 2025 12,067 Thereafter 64,215 $ 125,607

Senior Notes (Tables)

Senior Notes (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Summary of Senior Notes	The following table summarizes our senior notes as of September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 December 31, 2020 4.25% senior notes, due 2024 (1) $ 500,000 $ 500,000 4.00% senior notes, due 2030 (2) 400,000 400,000 5.20% senior notes, due 2047 (3) 225,000 225,000 1,125,000 1,125,000 Debt issuance costs, net (11,790 ) (12,591 ) Senior notes, net $ 1,113,210 $ 1,112,409 (1) In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.25% senior notes due July 2024 (2) In May 2020, we sold in a registered underwritten public offering, $400.0 million in aggregate principal amount of 4.00% senior notes due May 2030 (3) October 2047
Schedule of Corporate Date Maturity	Our senior notes mature as follows, based upon contractual terms (in thousands) 2021 $ — 2022 — 2023 — 2024 500,000 2025 — Thereafter 625,000 $ 1,125,000

Bank Deposits (Tables)

Bank Deposits (Tables)	9 Months Ended
	Sep. 30, 2021
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Schedule of Deposits	Deposits consist of interest-bearing demand deposits (primarily money market and savings accounts), non-interest bearing demand deposits, and certificates of deposit. Deposits at September 30, 2021 and December 31, 2020 were as follows (in thousands) September 30, 2021 December 31, 2020 Demand deposits (interest-bearing) $ 19,729,032 $ 16,886,953 Demand deposits (non-interest-bearing) 635,059 411,890 Certificates of deposit 34,783 97,654 $ 20,398,874 $ 17,396,497
Schedule of Maturities of Certificates of Deposit	Scheduled maturities of certificates of deposit at September 30, 2021 and December 31, 2020 were as follows (in thousands): September 30, 2021 December 31, 2020 Certificates of deposit, less than $100,000: Within one year $ 250 $ 2,719 One to three years 13 409 Three to five years — 254 $ 263 $ 3,382 Certificates of deposit, $100,000 and greater: Within one year $ 24,495 $ 63,650 One to three years 10,025 30,622 Three to five years — — 34,520 94,272 $ 34,783 $ 97,654

Disclosures About Offsetting _2

Disclosures About Offsetting Assets And Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Offsetting [Abstract]
Financial Assets And Derivative Assets That Are Subject to Offset	The following table provides information about financial assets and derivative assets that are subject to offset as of September 30, 2021 and December 31, 2020 (in thousands) As of September 30, 2021 Securities borrowing (1) Reverse repurchase agreements (2) Total Gross amounts of recognized assets $ 314,154 $ 598,535 $ 912,689 Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition 314,154 598,535 912,689 Gross amounts not offset in the statement of financial condition: Amounts available for offset (39,225 ) (10,655 ) (49,880 ) Available collateral (260,229 ) (584,240 ) (844,469 ) Net amount $ 14,700 $ 3,640 $ 18,340 As of December 31, 2020 Securities borrowing (1) Reverse repurchase agreements (2) Total Gross amounts of recognized assets $ 313,131 $ 217,930 $ 531,061 Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition 313,131 217,930 531,061 Gross amounts not offset in the statement of financial condition: Amounts available for offset (46,183 ) (17,992 ) (64,175 ) Available collateral (244,578 ) (199,110 ) (443,688 ) Net amount $ 22,370 $ 828 $ 23,198 (1) Securities borrowing transactions are included in receivables from brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 3 in the notes to consolidated financial statements for additional information on receivables from brokers, dealers, and clearing organizations. (2) Collateral received includes securities received by our company from the counterparty. These securities are not included on the consolidated statements of financial condition unless there is an event of default. The fair value of securities pledged as collateral was $594.9 million and $217.3 million at September 30, 2021 and December 31, 2020, respectively.
Financial Liabilities And Derivative Liabilities That Are Subject To Offset	The following table provides information about financial liabilities and derivative liabilities that are subject to offset as of September 30, 2021 and December 31, 2020 (in thousands) As of September 30, 2021 Securities lending (3) Repurchase agreements (4) Total Gross amounts of recognized liabilities $ (183,564 ) $ (195,451 ) $ (379,015 ) Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition (183,564 ) (195,451 ) (379,015 ) Gross amounts not offset in the statement of financial condition: Amounts available for offset 39,225 10,655 49,880 Collateral pledged 144,334 184,796 329,130 Net amount $ (5 ) $ — $ (5 ) As of December 31, 2020 Securities lending (3) Repurchase agreements (4) Total Gross amounts of recognized liabilities $ (145,124 ) $ (190,955 ) $ (336,079 ) Gross amounts offset in the statement of financial condition — — — Net amounts presented in the statement of financial condition (145,124 ) (190,955 ) (336,079 ) Gross amounts not offset in the statement of financial condition: Amounts available for offset 46,183 17,992 64,175 Collateral pledged 98,925 172,963 271,888 Net amount $ (16 ) $ — $ (16 ) (3) Securities lending transactions are included in payables to brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 3 in the notes to consolidated financial statements for additional information on payables to brokers, dealers, and clearing organizations. (4) Collateral pledged includes the fair value of securities pledged by our company to the counterparty. These securities are included in the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counterparty includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.6 million and $200.2 million at September 30, 2021 and December 31, 2020, respectively.

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	9 Months Ended
	Sep. 30, 2021
Regulatory Capital Requirements [Abstract]
Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios	Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Stifel Financial Corp. Amount Ratio Amount Ratio Amount Ratio Common equity tier 1 capital $ 2,816,734 16.6 % $ 764,693 4.5 % $ 1,104,557 6.5 % Tier 1 capital 3,501,734 20.6 % 1,019,591 6.0 % 1,359,454 8.0 % Total capital 3,643,378 21.4 % 1,359,454 8.0 % 1,699,318 10.0 % Tier 1 leverage 3,501,734 12.0 % 1,164,911 4.0 % 1,456,139 5.0 % Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Stifel Bank & Trust Amount Ratio Amount Ratio Amount Ratio Common equity tier 1 capital $ 1,145,805 10.7 % $ 482,722 4.5 % $ 697,264 6.5 % Tier 1 capital 1,145,805 10.7 % 643,629 6.0 % 858,172 8.0 % Total capital 1,250,328 11.7 % 858,172 8.0 % 1,072,715 10.0 % Tier 1 leverage 1,145,805 7.0 % 651,241 4.0 % 814,051 5.0 % Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Stifel Bank Amount Ratio Amount Ratio Amount Ratio Common equity tier 1 capital $ 309,150 20.9 % $ 66,632 4.5 % $ 96,246 6.5 % Tier 1 capital 309,150 20.9 % 88,843 6.0 % 118,457 8.0 % Total capital 316,431 21.4 % 118,457 8.0 % 148,071 10.0 % Tier 1 leverage 309,150 7.1 % 174,525 4.0 % 218,157 5.0 %

Operating Leases (Tables)

Operating Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Lessee Disclosure [Abstract]
Schedule of Net Lease Cost	The table below summarizes our net lease cost for the three and nine months ended September 30, 2021 and 2020 (in thousands) Three Months Ended September 30, 2021 2020 Operating lease cost $ 25,802 $ 25,251 Short-term lease cost 110 590 Variable lease cost 265 20 Sublease income (643 ) (997 ) Net lease cost $ 25,534 $ 24,864 Nine Months Ended September 30, 2021 2020 Operating lease cost $ 76,292 $ 73,172 Short-term lease cost 343 2,892 Variable lease cost 606 62 Sublease income (1,951 ) (2,901 ) Net lease cost $ 75,290 $ 73,225 The table below summarizes other information related to our operating leases as of and for the nine months ended September 30, 2021 (in thousands) Operating lease cash flows $ 73,589 Right-of-use assets obtained in exchange for new operating lease liabilities $ 32,189 Weighted-average remaining lease term 11.8 years Weighted-average discount rate 4.14 %
Schedule of Information About Operating Lease Liabilities	The table below presents information about operating lease liabilities as of September 30, 2021, (in thousands, except percentages) Remainder of 2021 $ 25,387 2022 100,075 2023 98,372 2024 96,377 2025 94,537 Thereafter 617,407 Total undiscounted lease payments 1,032,155 Imputed interest (227,778 ) Total operating lease liabilities $ 804,377

Revenues from Contracts with _2

Revenues from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue From Contract With Customer [Abstract]
Schedule of Total Revenues Broken Out by Revenues from Contracts with Customers and Other Sources of Revenues	The following table presents the Company’s total revenues broken out by revenues from contracts with customers and other sources of revenues for the three and nine months ended September 30, 2021 and 2020 (in thousands) Three Months Ended September 30, 2021 2020 Revenues from contracts with customers: Commissions $ 189,239 $ 172,654 Investment banking 372,279 218,134 Asset management and service fees 313,862 230,782 Other 5,092 15,329 Total revenue from contracts with customers 880,472 636,899 Other sources of revenue: Interest 141,844 114,411 Principal transactions 118,977 140,883 Other 13,668 4,929 Total revenues $ 1,154,961 $ 897,122 Nine Months Ended September 30, 2021 2020 Revenues from contracts with customers: Commissions $ 598,432 $ 560,780 Investment banking 1,088,010 614,637 Asset management and service fees 887,878 667,496 Other 30,331 32,408 Total revenue from contracts with customers 2,604,651 1,875,321 Other sources of revenue: Interest 402,975 403,956 Principal transactions 436,580 445,566 Other 27,298 18,571 Total revenues $ 3,471,504 $ 2,743,414
Revenues from Contracts with Customers Disaggregated by Major Business Activity and Primary Geographic Regions	The following tables present the Company’s revenues from contracts with customers by reportable segment disaggregated by major business activity and primary geographic regions for the three and nine months ended September 30, 2021 and 2020 (in thousands) Three Months Ended September 30, 2021 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 133,998 $ 55,241 $ — $ 189,239 Capital raising 11,580 152,481 — 164,061 Advisory fees — 208,218 — 208,218 Investment banking 11,580 360,699 — 372,279 Asset management 313,838 24 — 313,862 Other 5,206 — (114 ) 5,092 Total 464,622 415,964 (114 ) 880,472 Primary Geographic Region: United States 464,622 348,087 (114 ) 812,595 United Kingdom — 46,267 — 46,267 Canada — 13,088 — 13,088 Other — 8,522 — 8,522 $ 464,622 $ 415,964 $ (114 ) $ 880,472 Three Months Ended September 30, 2020 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 120,600 $ 52,054 $ — $ 172,654 Capital raising 8,113 129,179 — 137,292 Advisory fees — 80,842 — 80,842 Investment banking 8,113 210,021 — 218,134 Asset management 230,765 17 — 230,782 Other 14,535 — 794 15,329 Total 374,013 262,092 794 636,899 Primary Geographic Region: United States 374,013 209,141 794 583,948 United Kingdom — 30,959 — 30,959 Canada — 11,133 — 11,133 Other — 10,859 — 10,859 $ 374,013 $ 262,092 $ 794 $ 636,899 (1) Nine Months Ended September 30, 2021 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 421,156 $ 177,276 $ — $ 598,432 Capital raising 37,027 505,618 — 542,645 Advisory fees — 545,365 — 545,365 Investment banking 37,027 1,050,983 — 1,088,010 Asset management 887,794 84 — 887,878 Other 28,552 — 1,779 30,331 Total 1,374,529 1,228,343 1,779 2,604,651 Primary Geographic Region: United States 1,374,529 996,429 1,779 2,372,737 United Kingdom — 137,482 — 137,482 Canada — 64,145 — 64,145 Other — 30,287 — 30,287 $ 1,374,529 $ 1,228,343 $ 1,779 $ 2,604,651 Nine Months Ended September 30, 2020 (1) Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 373,653 $ 187,127 $ — $ 560,780 Capital raising 26,443 333,442 — 359,885 Advisory fees 19 254,733 — 254,752 Investment banking 26,462 588,175 — 614,637 Asset management 667,446 50 — 667,496 Other 30,104 — 2,304 32,408 Total 1,097,665 775,352 2,304 1,875,321 Primary Geographic Region: United States 1,097,665 609,328 2,304 1,709,297 United Kingdom — 110,053 — 110,053 Canada — 27,240 — 27,240 Other — 28,731 — 28,731 $ 1,097,665 $ 775,352 $ 2,304 $ 1,875,321 (1)

Interest Income and Interest _2

Interest Income and Interest Expense (Tables)	9 Months Ended
	Sep. 30, 2021
Banking And Thrift Interest [Abstract]
Components Of Interest Income And Interest Expense	The components of interest income and interest expense are as follows (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest income: Loans held for investment, net $ 95,075 $ 76,281 $ 274,693 $ 250,565 Investment securities 34,247 31,966 95,738 121,630 Margin balances 6,624 5,803 19,001 22,298 Financial instruments owned 3,581 2,924 9,019 10,357 Other 2,317 (2,563 ) 4,524 (894 ) $ 141,844 $ 114,411 $ 402,975 $ 403,956 Interest expense: Senior notes $ 11,850 $ 15,411 $ 35,924 $ 39,677 Bank deposits 1,111 1,478 3,608 13,324 Other (2,938 ) (3,067 ) (891 ) (1,738 ) $ 10,023 $ 13,822 $ 38,641 $ 51,263

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule Of Operating Information, Segment	Information concerning operations in these segments of business for the three and nine months ended September 30, 2021 and 2020 is as follows (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net revenues: (1) Global Wealth Management $ 655,533 $ 526,836 $ 1,924,595 $ 1,615,574 Institutional Group 492,284 363,365 1,519,176 1,093,699 Other (2,879 ) (6,901 ) (10,908 ) (17,122 ) $ 1,144,938 $ 883,300 $ 3,432,863 $ 2,692,151 Income/(loss) before income taxes: Global Wealth Management $ 232,119 $ 178,930 $ 682,655 $ 529,422 Institutional Group 125,092 76,841 383,774 201,630 Other (100,709 ) (97,378 ) (318,010 ) (314,593 ) $ 256,502 $ 158,393 $ 748,419 $ 416,459 (1) No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2021 or 2020.
Schedule Of Information Of Total Assets On Segment Basis	The following table presents our company’s total assets on a segment basis at September 30, 2021 and December 31, 2020 (in thousands) September 30, 2021 December 31, 2020 Global Wealth Management $ 25,152,551 $ 21,743,202 Institutional Group 5,161,215 3,733,661 Other 506,568 1,127,391 $ 30,820,334 $ 26,604,254
Schedule Of Net Revenues Earned On Major Geographical Areas	Revenues, classified by the major geographic areas in which they are earned for the three and nine months ended September 30, 2021 and 2020, were as follows (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 United States $ 1,067,901 $ 814,301 $ 3,142,337 $ 2,485,336 United Kingdom 57,413 45,705 177,138 147,097 Canada 9,523 10,713 76,535 24,338 Other 10,101 12,581 36,853 35,380 $ 1,144,938 $ 883,300 $ 3,432,863 $ 2,692,151

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Computation Of Basic And Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 (in thousands, except per share data) Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net income $ 192,376 $ 120,527 $ 563,468 $ 315,003 Preferred dividends 9,689 9,897 26,267 19,584 Net income available to common shareholders $ 182,687 $ 110,630 $ 537,201 $ 295,419 Shares for basic and diluted calculation: Average shares used in basic computation 107,379 105,941 107,655 106,221 Dilutive effect of stock options and units (1) 11,096 7,835 10,700 7,347 Average shares used in diluted computation 118,475 113,775 118,355 113,568 Earnings per common share: Basic $ 1.70 $ 1.04 $ 4.99 $ 2.78 Diluted $ 1.54 $ 0.97 $ 4.54 $ 2.60 (1) Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method.

Nature of Operations, Basis o_3

Nature of Operations, Basis of Presentation, and Summary of Significant Accounting Policies (Narrative) (Details)	Nov. 11, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Stock Dividend	50.00%
Stock split description	On November 11, 2020, our Board approved a 50% stock dividend, in the form of a three-for-two stock split, of our common stock paid on December 16, 2020, to shareholders of record as of December 2, 2020. All share and per share information has been retroactively adjusted to reflect the stock split
Stock split, conversion ratio	1.5

Receivables From And Payables_3

Receivables From And Payables To Brokers, Dealers And Clearing Organizations (Amounts Receivable From Brokers, Dealers, And Clearing Organizations) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Deposits paid for securities borrowed	$ 314,154	$ 313,131
Receivables from clearing organizations	131,469	229,070
Securities failed to deliver	42,806	7,291
Receivables from brokers, dealers and clearing organizations, Total	$ 488,429	$ 549,492

Receivables From And Payables_4

Receivables From And Payables To Brokers, Dealers And Clearing Organizations (Amounts Payable To Brokers, Dealers, And Clearing Organizations) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Deposits received from securities loaned	$ 183,564	$ 145,124
Securities failed to receive	43,603	7,273
Payable to clearing organizations	18,111	25,540
Payables to broker, dealers and clearing organizations, Total	$ 245,278	$ 177,937

Fair Value Of Financial Instrum

Fair Value Of Financial Instruments (Schedule Of Fair Value Of Investments In And Unfunded Commitments To Funds Measured At Net Asset Value) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	$ 23,703	$ 46,577
Unfunded commitments	14,149	3,723
Money Market Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	1,639	34,192
Mutual Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	6,885	7,152
Partnership Interests [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	12,893	3,744
Unfunded commitments	12,946	2,520
Private Equity Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	2,286	1,489
Unfunded commitments	$ 1,203	$ 1,203

Fair Value Of Financial Instr_2

Fair Value Of Financial Instruments (Fair Value Of Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		$ 1,199,386	$ 694,028
Available-for-sale securities		2,242,465	2,230,297
Investments		120,919	113,862
Cash equivalents measured at NAV		1,639	34,192
Total Assets		3,564,409	3,072,379
Financial instruments sold, but not yet purchased, at fair value		721,028	437,978
U.S. Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		16,829	46,900
Financial instruments sold, but not yet purchased, at fair value		366,014	91,974
U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		182,636	56,450
Available-for-sale securities		2,268	4,361
Financial instruments sold, but not yet purchased, at fair value		44,638
Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		74,783
Available-for-sale securities		323,932	698,133
Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		318,288	194,575
Available-for-sale securities		820,839	631,758
Financial instruments sold, but not yet purchased, at fair value		161,529	162,626
Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		91,874	67,593
Investments		25,198	29,496
Financial instruments sold, but not yet purchased, at fair value		30,813	30,848
State And Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		162,821	96,150
Available-for-sale securities		2,414	2,453
Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		18,854
Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		60,745	59,048
Investments in Funds and Partnerships Measured at NAV [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		22,064	12,385
Agency Mortgage-Backed Securities [Member] | Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned			216,434
Available-for-sale securities		1,016,730	793,410
Financial instruments sold, but not yet purchased, at fair value		109,887	141,227
Agency Mortgage-Backed Securities [Member] | Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		75,701	95,613
Agency Mortgage-Backed Securities [Member] | Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		581	4,569
Agency Securities [Member] | Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		303,684
Non-Agency [Member] | Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		19,697
Sovereign Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		9,920
Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	[1]		15,926
Financial instruments sold, but not yet purchased, at fair value		8,147	11,303	[2]
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		107,727	114,353
Investments		26,676	39,838
Total Assets		134,403	154,191
Financial instruments sold, but not yet purchased, at fair value		396,827	126,916
Level 1 [Member] | U.S. Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		16,829	46,900
Financial instruments sold, but not yet purchased, at fair value		366,014	91,974
Level 1 [Member] | Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		250	4,474
Financial instruments sold, but not yet purchased, at fair value			4,094
Level 1 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		90,648	62,979
Investments		16,443	29,496
Financial instruments sold, but not yet purchased, at fair value		30,813	30,848
Level 1 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		10,233	10,342
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		1,003,871	568,391
Available-for-sale securities		2,242,465	2,230,297
Investments		15,548	6,593
Total Assets		3,261,884	2,805,281
Financial instruments sold, but not yet purchased, at fair value		324,201	311,062
Level 2 [Member] | U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		182,636	56,450
Available-for-sale securities		2,268	4,361
Financial instruments sold, but not yet purchased, at fair value		44,638
Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		5,849
Available-for-sale securities		323,932	698,133
Level 2 [Member] | Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		318,038	190,101
Available-for-sale securities		820,839	631,758
Financial instruments sold, but not yet purchased, at fair value		161,529	158,532
Level 2 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		1,226	4,614
Investments		1,001
Level 2 [Member] | State And Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		162,821	96,150
Available-for-sale securities		2,414	2,453
Level 2 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		14,547	6,593
Level 2 [Member] | Agency Mortgage-Backed Securities [Member] | Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned			216,434
Available-for-sale securities		1,016,730	793,410
Financial instruments sold, but not yet purchased, at fair value		109,887	141,227
Level 2 [Member] | Agency Mortgage-Backed Securities [Member] | Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		75,701	95,613
Level 2 [Member] | Agency Mortgage-Backed Securities [Member] | Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		581	4,569
Level 2 [Member] | Agency Securities [Member] | Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		303,684
Level 2 [Member] | Non-Agency [Member] | Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		19,697
Level 2 [Member] | Sovereign Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		9,920
Level 2 [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	[1]		4,642
Financial instruments sold, but not yet purchased, at fair value		8,147	11,303	[2]
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		87,788	11,284
Investments		56,631	55,046
Total Assets		144,419	66,330
Level 3 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		68,934
Level 3 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		7,754
Level 3 [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		18,854
Level 3 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		$ 35,965	42,113
Level 3 [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	[1]		$ 11,284
[1]	Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities.
[2]	Includes sovereign debt and state and municipal securities.

Fair Value Of Financial Instr_3

Fair Value Of Financial Instruments (Schedule Of Changes In Fair Value Associated With Level 3 Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 1,815	$ 9
Unrealized gains/(losses)		(3,000)
Realized gains		7,361
Purchases	68,028	68,104
Redemptions	(839)	(10,400)
Transfers out of Level 3	(70)	(70)
Category transfers		6,930
Net change	67,119	68,925
Ending Balance	68,934	68,934
Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	22,839	11,275
Unrealized gains/(losses)		(48)
Purchases	3,365	14,977
Sales	(7,350)	(7,350)
Net change	(3,985)	7,579
Ending Balance	18,854	18,854
Corporate Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	8,754
Unrealized gains/(losses)	(1,000)	(1,000)
Purchases		3,000
Transfers into Level 3		5,754
Net change	(1,000)	7,754
Ending Balance	7,754	7,754
Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	12,959	12,933
Unrealized gains/(losses)	(47)	(21)
Net change	(47)	(21)
Ending Balance	12,912	12,912
Other Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	34,666	42,113
Unrealized gains/(losses)	1,299	782
Category transfers		(6,930)
Net change	1,299	(6,148)
Ending Balance	$ 35,965	$ 35,965

Fair Value Of Financial Instr_4

Fair Value Of Financial Instruments (Schedule Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities purchased under agreements to resell	$ 598,535	$ 217,930
Financial instruments owned	1,199,386	694,028
Available-for-sale securities	2,242,465	2,230,297
Held-to-maturity securities	5,354,129	4,107,960
Securities sold under agreements to repurchase	195,451	190,955
Financial instruments sold, but not yet purchased, at fair value	721,028	437,978
Senior notes	1,113,210	1,112,409
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,054,273	2,279,274
Cash segregated for regulatory purposes	26,095	172,932
Securities purchased under agreements to resell	598,535	217,930
Financial instruments owned	1,199,386	694,028
Available-for-sale securities	2,242,465	2,230,297
Held-to-maturity securities	5,347,821	4,117,384
Bank loans	13,502,587	11,006,760
Loans held for sale	156,110	551,248
Investments	120,919	113,862
Securities sold under agreements to repurchase	195,451	190,955
Bank deposits	20,398,874	17,396,497
Financial instruments sold, but not yet purchased, at fair value	721,028	437,978
Federal Home Loan Bank advances	52,000
Senior notes	1,113,210	1,112,409
Debentures to Stifel Financial Capital Trusts	60,000	60,000
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	2,054,273	2,279,274
Cash segregated for regulatory purposes	26,095	172,932
Securities purchased under agreements to resell	598,535	217,930
Financial instruments owned	1,199,386	694,028
Available-for-sale securities	2,242,465	2,230,297
Held-to-maturity securities	5,354,129	4,107,960
Bank loans	13,584,900	11,088,058
Loans held for sale	156,110	551,248
Investments	120,919	113,862
Securities sold under agreements to repurchase	195,451	190,955
Bank deposits	20,161,189	17,192,722
Financial instruments sold, but not yet purchased, at fair value	721,028	437,978
Federal Home Loan Bank advances	52,000
Senior notes	1,243,147	1,265,669
Debentures to Stifel Financial Capital Trusts	$ 46,130	$ 41,071

Fair Value Of Financial Instr_5

Fair Value Of Financial Instruments (Estimated Fair Values Of Financial Instruments Not Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities purchased under agreements to resell	$ 598,535	$ 217,930
Held-to-maturity securities	5,354,129	4,107,960
Securities sold under agreements to repurchase	195,451	190,955
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash	2,052,634	2,245,082
Cash segregated for regulatory purposes	26,095	172,932
Securities purchased under agreements to resell	598,535	217,930
Held-to-maturity securities	5,354,129	4,107,960
Bank loans	13,584,900	11,088,058
Loans held for sale	156,110	551,248
Securities sold under agreements to repurchase	195,451	190,955
Bank deposits	20,161,189	17,192,722
Federal Home Loan Bank advances	52,000
Senior notes	1,243,147	1,265,669
Debentures to Stifel Financial Capital Trusts	46,130	41,071
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash	2,052,634	2,245,082
Cash segregated for regulatory purposes	26,095	172,932
Securities purchased under agreements to resell	393,097	164,094
Federal Home Loan Bank advances	52,000
Senior notes	1,243,147	1,265,669
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities purchased under agreements to resell	205,438	53,836
Held-to-maturity securities	5,212,387	3,943,944
Bank loans	13,584,900	11,088,058
Loans held for sale	156,110	551,248
Securities sold under agreements to repurchase	195,451	190,955
Bank deposits	20,161,189	17,192,722
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	141,742	164,016
Debentures to Stifel Financial Capital Trusts	$ 46,130	$ 41,071

Financial Instruments Owned A_3

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Components Of Trading Securities Owned And Trading Securities Sold, But Not Yet Purchased) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		$ 1,199,386	$ 694,028
U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		182,636	56,450
Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		318,288	194,575
Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		91,874	67,593
State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		162,821	96,150
Loans [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		18,854
U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		16,829	46,900
Sovereign Debt [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		9,920
Securities Sold, But Not yet Purchased [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		721,028	437,978
Other	[1]	8,147	11,303
Securities Sold, But Not yet Purchased [Member] | U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		44,638
Securities Sold, But Not yet Purchased [Member] | Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities		161,529	162,626
Securities Sold, But Not yet Purchased [Member] | Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Equity securities		30,813	30,848
Securities Sold, But Not yet Purchased [Member] | U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		366,014	91,974
Securities Sold, But Not yet Purchased [Member] | Mortgage-Backed Securities [Member] | Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		109,887	141,227
Securities Owned [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Asset-backed securities		74,783	3,394
Financial instruments owned, at fair value		1,199,386	694,028
Securities Owned [Member] | U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		182,636	56,450
Securities Owned [Member] | Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities		318,288	194,575
Securities Owned [Member] | Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Equity securities		91,874	67,593
Securities Owned [Member] | State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
State and municipal securities		162,821	96,150
Securities Owned [Member] | Loans [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities		18,854	11,275
Securities Owned [Member] | U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		16,829	46,900
Securities Owned [Member] | Mortgage-Backed Securities [Member] | Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		303,684	216,434
Securities Owned [Member] | Mortgage-Backed Securities [Member] | Non-Agency [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		19,697	107
Securities Owned [Member] | Sovereign Debt [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Sovereign debt		$ 9,920	$ 1,150
[1]	Includes sovereign debt and state and municipal securities

Financial Instruments Owned A_4

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments pledged as collateral	$ 735.4	$ 368.4
Securities Owned [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments pledged as collateral	$ 206	$ 194

Available-For-Sale And Held-T_3

Available-For-Sale And Held-To-Maturity Securities (Schedule Of Amortized Cost And Fair Values Of The Available For Sale Securities And Held To Maturity Securities) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		$ 2,216,018	$ 2,184,339
Available for sale securities, unrealized gains	[1]	37,200	51,549
Available-for-sale Securities, Gross unrealized losses	[1]	(10,753)	(5,591)
Available-for-sale securities		2,242,465	2,230,297
Held-to-maturity Securities, Amortized cost		5,347,821	4,117,384
Held-to-maturity securities, Estimated fair value		5,354,129	4,107,960
U.S. Government Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		2,249	4,293
Available for sale securities, unrealized gains	[1]	19	68
Available-for-sale securities		2,268	4,361
State And Municipal Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		2,378	2,395
Available for sale securities, unrealized gains	[1]	36	58
Available-for-sale securities		2,414	2,453
Agency Mortgage-Backed Securities [Member] | Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		1,011,466	777,025
Available for sale securities, unrealized gains	[1]	11,408	16,401
Available-for-sale Securities, Gross unrealized losses	[1]	(6,144)	(16)
Available-for-sale securities		1,016,730	793,410
Agency Mortgage-Backed Securities [Member] | Commercial [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		73,187	91,237
Available for sale securities, unrealized gains	[1]	2,514	4,376
Available-for-sale securities		75,701	95,613
Agency Mortgage-Backed Securities [Member] | Non-Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		581	4,550
Available for sale securities, unrealized gains	[1]		28
Available-for-sale Securities, Gross unrealized losses	[1]		(9)
Available-for-sale securities		581	4,569
Corporate Fixed Income Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		803,835	604,662
Available for sale securities, unrealized gains	[1]	19,677	27,096
Available-for-sale Securities, Gross unrealized losses	[1]	(2,673)
Available-for-sale securities		820,839	631,758
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		322,322	700,177
Available for sale securities, unrealized gains	[1]	3,546	3,522
Available-for-sale Securities, Gross unrealized losses	[1]	(1,936)	(5,566)
Available-for-sale securities		323,932	698,133
Held-to-maturity Securities, Amortized cost	[2]	5,347,821	4,117,384
Held-to-maturity Securities, Gross unrealized gains	[2]	9,315	8,111
Held-to-maturity Securities, Gross unrealized losses	[2]	(3,007)	(17,535)
Held-to-maturity securities, Estimated fair value	[2]	$ 5,354,129	$ 4,107,960
[1]	Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive loss.
[2]	Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.

Available-For-Sale And Held-T_4

Available-For-Sale And Held-To-Maturity Securities (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)security	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)security	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 23,800		$ 23,800		$ 20,800
Proceeds from sale of available-for-sale securities				$ 491,900
Net realized gains (loss) resulting from sale of available-for-sale securities	0	$ 0	0	(500)
Transfers from available for sale securities to held to maturity	312,900	$ 313,000	312,900	313,000
Gain On Transfer Of securities	0			$ 0
Financial instruments pledged as collateral	$ 735,400		$ 735,400		368,400
Number of available for sale securities whose amortized costs exceeded their fair values | security	55		55
Available-for-sale Securities, Continuous	$ 10,753		$ 10,753
Available-for-sale Securities, Continuous Unrealized	293		293
Available-for-sale Securities, Continuous	$ 968,836		$ 968,836
Percentage of available-for-sale portfolio	43.20%		43.20%
Pledged [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Trading securities pledged	$ 1,200,000		$ 1,200,000		1,400,000
Other Assets [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 28,100		$ 28,100		$ 26,000

Available-For-Sale And Held-T_5

Available-For-Sale And Held-To-Maturity Securities (Schedule Of Amortized Cost And Fair Values Of Debt Securities By Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2021		Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Available-for-sale Securities, debt maturities, within one year, Amortized Cost	$ 25,169		$ 143,462
Available-for-sale Securities, debt maturities, after one year through three years, Amortized Cost	223,518		134,040
Available-for-sale Securities, debt maturities, after three year through five years, Amortized Cost	213,452		247,907
Available-for-sale Securities, debt maturities, after five through ten years, Amortized Cost	458,386		429,921
Available-for-sale Securities, debt maturities, after ten years, Amortized Cost	1,295,493		1,229,009
Available-for-sale Securities, debt maturities, Amortized Cost	2,216,018		2,184,339
Available-for-sale Securities, debt maturities, within one year, Fair Value	25,321	[1]	144,362
Available-for-sale Securities, debt maturities, after one year through three years, Fair Value	230,667		137,625
Available-for-sale Securities, debt maturities, after three year through five years, Fair Value	222,208		266,139
Available-for-sale Securities, debt maturities, after five through ten years, fair value	461,232	[1]	435,111
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	1,303,037	[1]	1,247,060
Available-for-sale Securities, debt maturities, Fair Value	2,242,465	[1]	2,230,297
Held-to-maturity Securities, debt maturities, after three through five years, Amortized Cost			17,460
Held-to-maturity Securities, debt maturities, after five through ten years, Amortized Cost	2,267,811		1,932,439
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost	3,080,010		2,167,485
Held-to-maturity Securities, Amortized cost	5,347,821		4,117,384
Held-to-maturity Securities, debt maturities, after three through five years, Fair Value			17,460
Held-to-maturity Securities, debt maturities, after five through ten years, Fair Value	2,267,120		1,926,425
Held-to-maturity Securities, debt maturities, after ten years, Fair Value	3,087,009		2,164,075
Held-to-maturity Securities, debt maturities, Fair Value	$ 5,354,129		$ 4,107,960
[1]	Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis.

Available-For-Sale And Held-T_6

Available-For-Sale And Held-To-Maturity Securities (Contractual Maturities) (Details) - USD ($) $ in Thousands		Sep. 30, 2021		Dec. 31, 2020
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value		$ 25,321	[1]	$ 144,362
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	452,875
Available-for-sale Securities, debt maturities, after five through ten years, fair value		461,232	[1]	435,111
Availably-for-sale Securities, debt maturities, after ten years, Fair Value		1,303,037	[1]	1,247,060
Available-for-sale Securities, debt maturities, Fair Value		2,242,465	[1]	2,230,297
Held-to-maturity Securities, debt maturities, after five year through ten, Amortized Cost		2,267,811		1,932,439
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost		3,080,010		2,167,485
Held-to-maturity Securities, Amortized cost		5,347,821		$ 4,117,384
U.S. Government Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value	[1]	2,064
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	204
Available-for-sale Securities, debt maturities, Fair Value	[1]	2,268
State And Municipal Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	2,414
Available-for-sale Securities, debt maturities, Fair Value	[1]	2,414
Corporate Fixed Income Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value	[1]	23,201
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	452,575
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	345,063
Available-for-sale Securities, debt maturities, Fair Value	[1]	820,839
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	50,434
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	273,498
Available-for-sale Securities, debt maturities, Fair Value	[1]	323,932
Held-to-maturity Securities, debt maturities, after five year through ten, Amortized Cost		2,267,811
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost		3,080,010
Held-to-maturity Securities, Amortized cost		5,347,821
Agency Mortgage-Backed Securities [Member] | Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value	[1]	56
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	96
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	63,321
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	953,257
Available-for-sale Securities, debt maturities, Fair Value	[1]	1,016,730
Agency Mortgage-Backed Securities [Member] | Commercial [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1],[2]	75,701
Available-for-sale Securities, debt maturities, Fair Value	[1],[2]	75,701
Agency Mortgage-Backed Securities [Member] | Non-Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	581
Available-for-sale Securities, debt maturities, Fair Value	[1]	$ 581
[1]	Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis.
[2]	Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.

Available-For-Sale And Held-T_7

Available-For-Sale And Held-To-Maturity Securities (Schedule Of Gross Unrealized Losses And The Estimated Fair Value By Length Of Time In A Loss Position) (Details) $ in Thousands	Sep. 30, 2021USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	$ (10,460)
Available-for-sale Securities, Estimated fair value, Less than 12 months	917,360
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(293)
Available-for-sale Securities, Estimated fair value, 12 months or more	51,476
Available-for-sale Securities, Gross unrealized losses, Total	(10,753)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	968,836
Agency Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(6,142)
Available-for-sale Securities, Estimated fair value, Less than 12 months	618,905
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(2)
Available-for-sale Securities, Estimated fair value, 12 months or more	332
Available-for-sale Securities, Gross unrealized losses, Total	(6,144)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	619,237
Corporate Fixed Income Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(2,673)
Available-for-sale Securities, Estimated fair value, Less than 12 months	181,665
Available-for-sale Securities, Gross unrealized losses, Total	(2,673)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	181,665
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(1,645)
Available-for-sale Securities, Estimated fair value, Less than 12 months	116,790
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(291)
Available-for-sale Securities, Estimated fair value, 12 months or more	51,144
Available-for-sale Securities, Gross unrealized losses, Total	(1,936)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 167,934

Available-For-Sale And Held-T_8

Available-For-Sale And Held-To-Maturity Securities (Schedule Of Amortized Cost Of Held-To-Maturity Securities By Credit Quality Indicator) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		$ 5,347,821	$ 4,117,384
Asset-Backed Securities [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost	[1]	5,347,821	$ 4,117,384
Asset-Backed Securities [Member] | AAA [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		1,104,716
Asset-Backed Securities [Member] | AA [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		4,235,714
Asset-Backed Securities [Member] | A [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		5,000
Asset-Backed Securities [Member] | C [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		$ 2,391
[1]	Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.

Bank Loans (Schedule Of Balance

Bank Loans (Schedule Of Balance And Associated Percentage Of Each Major Loan Category In Bank Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 13,631,287		$ 11,170,813
Unamortized loan discount, net	(150)		(1,822)
Loans in process	(32,909)		(48,222)
Unamortized loan fees, net	(1,348)		(1,980)
Allowance for loan losses	(94,293)	$ (99,196)	(112,029)	$ (114,113)	$ (115,821)	$ (95,579)
Loans held for investment, net	$ 13,502,587		$ 11,006,760
Gross bank loans, Percent	100.00%		100.00%
Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 5,033,313		$ 4,296,089
Allowance for loan losses	$ (46,687)	(46,943)	$ (67,222)	(75,809)	(65,503)	(69,949)
Gross bank loans, Percent	36.90%		38.50%
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 4,952,372		$ 3,956,670
Allowance for loan losses	$ (23,904)	(21,267)	$ (16,300)	(17,683)	(24,043)	(14,253)
Gross bank loans, Percent	36.30%		35.40%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 369,502		$ 366,485
Allowance for loan losses	$ (5,321)	(11,903)	$ (8,580)	(7,917)	(10,647)	(3,564)
Gross bank loans, Percent	2.70%		3.30%
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 576,362		$ 501,681
Allowance for loan losses	$ (14,333)	(15,953)	$ (17,275)	(10,186)	(13,075)	(4,613)
Gross bank loans, Percent	4.20%		4.50%
Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 82,230		$ 75,507
Allowance for loan losses	$ (474)	(426)	$ (374)	(381)	(499)	(442)
Gross bank loans, Percent	0.60%		0.70%
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 35,803		$ 40,407
Allowance for loan losses	$ (247)	(185)	$ (263)	(235)	(247)	(397)
Gross bank loans, Percent	0.30%		0.30%
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 2,581,705		$ 1,933,974
Allowance for loan losses	$ (3,327)	$ (2,519)	$ (2,015)	$ (1,902)	$ (1,807)	$ (2,361)
Gross bank loans, Percent	19.00%		17.30%

Bank Loans (Narrative) (Details

Bank Loans (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held for sale	$ 156,110			$ 156,110		$ 551,248
Gains (losses) recognized from sale of loans	4,400		$ 15,000	25,800	$ 28,000
Proceeds from unpaid principal balance of loans	208,000
Proceeds from deposits	215,100
Accrued interest receivable	23,800			23,800		20,800
Provision for credit losses	(4,903)		(1,777)	(12,534)	30,369
Impaired loans more than 90 days past due	8,300			8,300		13,800
Troubled debt restructurings	200			200		200
Specific allowance	$ 4,100			$ 4,100		$ 8,200
Collateralized loan portfolio	98.90%			98.90%		98.80%
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held for sale	$ 156,100			$ 156,100		$ 551,200
Unfunded Commitment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for credit losses	4,200		3,000	3,000	100
Commercial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount reclassified to held for sale		$ 217,100
Deposits
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount reclassified to held for sale		$ 285,600
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4,700,000			4,700,000		4,700,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,800,000			3,800,000		3,800,000
Provision for credit losses	(6,582)		$ (2,730)	(3,259)	$ 3,562
Other Income
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gains (losses) recognized from sale of loans	7,400
Stifel Bancorp [Member] | Executive Officers and Directors [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding amount	26,100			26,100		23,600
Stifel Bancorp [Member] | Executive Officers and Directors of Certain Affiliated Entities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding amount	$ 26,100			$ 26,100		$ 23,600

Bank Loans (Activity In The All

Bank Loans (Activity In The Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 99,196	$ 115,821	$ 112,029	$ 95,579
CECL Adoption				(11,736)
Provision	(4,903)	(1,777)	(12,534)	30,369
Charge-offs		(23)	(5,202)	(193)
Recoveries		92		94
Ending Balance	94,293	114,113	94,293	114,113
Commercial And Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	46,943	65,503	67,222	69,949
CECL Adoption				(19,940)
Provision	(256)	10,303	(15,333)	25,949
Charge-offs		(1)	(5,202)	(153)
Recoveries		4		4
Ending Balance	46,687	75,809	46,687	75,809
Residential Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	21,267	24,043	16,300	14,253
CECL Adoption				3,499
Provision	2,637	(6,360)	7,604	(69)
Ending Balance	23,904	17,683	23,904	17,683
Securities-Based Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	2,519	1,807	2,015	2,361
CECL Adoption				1,346
Provision	808	95	1,312	(1,805)
Ending Balance	3,327	1,902	3,327	1,902
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	11,903	10,647	8,580	3,564
CECL Adoption				791
Provision	(6,582)	(2,730)	(3,259)	3,562
Ending Balance	5,321	7,917	5,321	7,917
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	15,953	13,075	17,275	4,613
CECL Adoption				2,674
Provision	(1,620)	(2,889)	(2,942)	2,899
Ending Balance	14,333	10,186	14,333	10,186
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	426	499	374	442
CECL Adoption				39
Provision	48	(205)	100	(188)
Recoveries		87		88
Ending Balance	474	381	474	381
Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	185	247	263	397
CECL Adoption				(145)
Provision	62	9	(16)	21
Charge-offs		(22)		(40)
Recoveries		1		2
Ending Balance	$ 247	$ 235	$ 247	$ 235

Bank Loans (Aging Of The Record

Bank Loans (Aging Of The Recorded Investment In Past Due Loans) (Details) - USD ($)		Sep. 30, 2021		Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 12,065,000		$ 18,241,000
Total		13,631,287,000		11,170,813,000
Non-Accrual		6,922,000	[1]	12,395,000	[2]
Restructured		156,000	[1]	158,000	[2]
Nonperforming loans with no allowance		1,249,000	[1]	1,249,000	[2]
Total		8,327,000	[1]	13,802,000	[2]
Loans past due 90 days and still accruing interest		0		0
Non-Accrual		6,922,000	[1]	12,395,000	[2]
30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		3,894,000		4,611,000
90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		8,171,000		13,630,000
Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		13,619,222,000		11,152,572,000
Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		5,227,000		5,803,000
Total		4,952,372,000		3,956,670,000
Non-Accrual	[1]	84,000
Restructured		156,000	[1]	158,000	[2]
Nonperforming loans with no allowance		1,249,000	[1]	1,249,000	[2]
Total		1,489,000	[1]	1,407,000	[2]
Non-Accrual	[1]	84,000
Residential Mortgage | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		3,894,000		4,554,000
Residential Mortgage | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,333,000		1,249,000
Residential Mortgage | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,947,145,000		3,950,867,000
Commercial And Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		6,805,000		12,251,000
Total		5,033,313,000		4,296,089,000
Non-Accrual		6,805,000	[1]	12,251,000	[2]
Total		6,805,000	[1]	12,251,000	[2]
Non-Accrual		6,805,000	[1]	12,251,000	[2]
Commercial And Industrial | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				14,000
Commercial And Industrial | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		6,805,000		12,237,000
Commercial And Industrial | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		5,026,508,000		4,283,838,000
Securities-Based Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total		2,581,705,000		1,933,974,000
Securities-Based Loans [Member] | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,581,705,000		1,933,974,000
Commercial Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		33,000		144,000
Total		369,502,000		366,485,000
Non-Accrual		33,000	[1]	144,000	[2]
Total		33,000	[1]	144,000	[2]
Non-Accrual		33,000	[1]	144,000	[2]
Commercial Real Estate [Member] | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		33,000		144,000
Commercial Real Estate [Member] | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		369,469,000		366,341,000
Home Equity Lines Of Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				12,000
Total		82,230,000		75,507,000
Home Equity Lines Of Credit [Member] | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				12,000
Home Equity Lines Of Credit [Member] | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		82,230,000		75,495,000
Construction And Land [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total		576,362,000		501,681,000
Construction And Land [Member] | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		576,362,000		501,681,000
Other [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				31,000
Total		35,803,000		40,407,000
Other [Member] | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				31,000
Other [Member] | Current Balance [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 35,803,000		$ 40,376,000
[1]	There were no loans past due 90 days and still accruing interest at September 30, 2021.
[2]	There were no loans past due 90 days and still accruing interest at December 31, 2020.

Bank Loans (Risk Category Of Lo

Bank Loans (Risk Category Of Loan Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	$ 13,631,287	$ 11,170,813
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	13,380,137	10,824,109
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	105,330	130,332
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	137,733	202,728
Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	8,087	13,644
Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	4,952,372	3,956,670
Residential Mortgage | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	4,951,039	3,955,421
Residential Mortgage | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	84
Residential Mortgage | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	1,249	1,249
Commercial And Industrial
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	5,033,313	4,296,089
Commercial And Industrial | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	4,824,500	3,995,351
Commercial And Industrial | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	91,090	105,759
Commercial And Industrial | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	110,918	182,728
Commercial And Industrial | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	6,805	12,251
Securities-Based Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	2,581,705	1,933,974
Securities-Based Loans [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	2,581,705	1,933,974
Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	369,502	366,485
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	362,738	356,008
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio		10,333
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	6,731
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	33	144
Home Equity Lines Of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	82,230	75,507
Home Equity Lines Of Credit [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	82,230	75,507
Construction And Land [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	576,362	501,681
Construction And Land [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	542,122	467,441
Construction And Land [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	14,240	14,240
Construction And Land [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	20,000	20,000
Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	35,803	40,407
Other [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	$ 35,803	$ 40,407

Bank Loans (Schedule of Term Lo

Bank Loans (Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	$ 13,631,287	$ 11,170,813
Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5,033,313	4,296,089
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,303,613
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	352,440
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	433,458
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	558,965
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	307,377
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	374,107
Commercial And Industrial | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,703,353
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,952,372	3,956,670
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,890,145
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,362,365
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	646,445
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	268,473
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	222,500
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	562,444
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,581,705	1,933,974
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5,897
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	39,570
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	93,576
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	294
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	140
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	11,475
Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,430,753
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	576,362	501,681
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	55,368
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	111,262
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	240,337
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	99,686
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	63,484
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,225
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	369,502	366,485
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	64,963
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	73,006
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	148,581
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	22,543
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	36,438
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	23,971
Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	82,230	75,507
Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	82,230
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	35,803	40,407
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,000
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5,526
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	19,156
Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,121
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	13,380,137	10,824,109
Special Mention [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,824,500	3,995,351
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,303,613
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	351,928
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	376,203
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	480,660
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	245,320
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	366,376
Special Mention [Member] | Commercial And Industrial | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,700,400
Special Mention [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,951,039	3,955,421
Special Mention [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,890,145
Special Mention [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,362,365
Special Mention [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	646,445
Special Mention [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	268,473
Special Mention [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	222,351
Special Mention [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	561,260
Special Mention [Member] | Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,581,705	1,933,974
Special Mention [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5,897
Special Mention [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	39,570
Special Mention [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	93,576
Special Mention [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	294
Special Mention [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	140
Special Mention [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	11,475
Special Mention [Member] | Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,430,753
Special Mention [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	542,122	467,441
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	55,368
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	111,262
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	240,337
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	65,446
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	63,484
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,225
Special Mention [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	362,738	356,008
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	64,963
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	73,006
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	148,581
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	22,510
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	36,438
Special Mention [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	17,240
Special Mention [Member] | Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	82,230	75,507
Special Mention [Member] | Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	82,230
Special Mention [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	35,803	40,407
Special Mention [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,000
Special Mention [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5,526
Special Mention [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	19,156
Special Mention [Member] | Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,121
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	105,330	130,332
Special Mention [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	91,090	105,759
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	30,000
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	32,220
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	28,870
Special Mention [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	14,240	14,240
Special Mention [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	14,240
Special Mention [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		10,333
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	137,733	202,728
Substandard [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	110,918	182,728
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	512
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	27,255
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	46,085
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	26,382
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	7,731
Substandard [Member] | Commercial And Industrial | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,953
Substandard [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	84
Substandard [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	84
Substandard [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	20,000	20,000
Substandard [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	20,000
Substandard [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,731
Substandard [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,731
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	8,087	13,644
Doubtful [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,805	12,251
Doubtful [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,805
Doubtful [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,249	1,249
Doubtful [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	149
Doubtful [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,100
Doubtful [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	33	$ 144
Doubtful [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	$ 33

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			$ 1,181,998
Goodwill, Adjustments			315
Goodwill, Ending balance	$ 1,182,313		1,182,313
Intangible assets, Beginning balance	127,725		140,984
Intangible assets, Adjustments / Sale of ZCM			(43)
Intangible assets, Amortization	(4,500)	$ (4,700)	(13,216)	$ (14,489)
Intangible assets, Ending balance	127,725		127,725
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			335,009
Goodwill, Ending balance	335,009		335,009
Intangible assets, Beginning balance	40,352		44,671
Intangible assets, Amortization			(4,319)
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance			846,989
Goodwill, Adjustments			315
Goodwill, Ending balance	847,304		847,304
Intangible assets, Beginning balance	$ 87,373		96,313
Intangible assets, Adjustments / Sale of ZCM			(43)
Intangible assets, Amortization			$ (8,897)

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Goodwill and Intangible Assets [Line Items]
Amortization of intangible assets	$ 4,500	$ 4,700	$ 13,216	$ 14,489
Customer Relationships [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets			9 years 9 months 18 days
Trade Name [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets			8 years 7 months 6 days
Core Deposits [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets			2 years 9 months 18 days
Non-Compete Agreements [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets			5 years 4 months 24 days
Investment Banking Backlog [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets			7 years 4 months 24 days
Acquired Technology [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets			1 year
North Atlantic Capital Corporation Member [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Date of acquisition			Feb. 28, 2021

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 253,789	$ 253,941
Accumulated Amortization	126,064	112,957
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	202,190	202,342
Accumulated Amortization	93,819	85,152
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	28,659	28,659
Accumulated Amortization	16,973	15,660
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	9,240	9,240
Accumulated Amortization	5,302	4,229
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	8,615	8,615
Accumulated Amortization	5,944	4,809
Investment Banking Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,245	4,245
Accumulated Amortization	3,443	2,734
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	840	840
Accumulated Amortization	$ 583	$ 373

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Amortization Expense In Future Periods) (Details) $ in Thousands	Sep. 30, 2021USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Remainder of 2021	$ 4,395
2022	16,421
2023	14,601
2024	13,908
2025	12,067
Thereafter	64,215
Future amortization expense total	$ 125,607

Borrowings and Federal Home L_2

Borrowings and Federal Home Loan Bank Advances (Narrative) (Details)	May 27, 2021USD ($)	Sep. 30, 2021USD ($)item	Sep. 30, 2021USD ($)item
Short-term Debt [Line Items]
Uncommitted secured lines of credit			$ 880,000,000
Number of banks | item		4	4
Daily borrowings under our uncommitted secured lines		$ 50,000,000	$ 50,000,000
Compensating balances		0	0
Federal Home Loan Bank Advances Floating Rate		52,000,000	52,000,000
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Credit facility expiration date	2026-05
Committed revolving credit facility with bank and broker dealer - subsidiary	$ 500,000,000
Credit facility sublimit	$ 200,000,000
Outstanding credit facility		$ 0	0
Company Owned Securities [Member]
Short-term Debt [Line Items]
Uncommitted secured lines of credit			$ 0
Federal Home Loan Bank advances [Member]
Short-term Debt [Line Items]
Weighted average interest rate on borrowings		0.28%	0.28%

Senior Notes (Summary of Senior

Senior Notes (Summary of Senior Notes) (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020	May 31, 2020	Oct. 31, 2017	Jul. 31, 2014
Debt Instrument [Line Items]
Long-term Debt, gross		$ 1,125,000	$ 1,125,000
Debt issuance costs, net		(11,790)	(12,591)
Senior notes, net		1,113,210	1,112,409
Senior notes 4.25% due 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt, gross	[1]	500,000	500,000
Senior notes, net						$ 300,000
Senior notes 4.00% due 2030 [Member]
Debt Instrument [Line Items]
Long-term Debt, gross	[2]	400,000	400,000
Senior notes, net				$ 400,000
Senior notes 5.20% due 2047 [Member]
Debt Instrument [Line Items]
Long-term Debt, gross	[3]	$ 225,000	$ 225,000
Senior notes, net					$ 200,000
[1]	In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.25% senior notes due July 2024
[2]	In May 2020, we sold in a registered underwritten public offering, $400.0 million in aggregate principal amount of 4.00% senior notes due May 2030
[3]	In October 2017, we completed the pricing of a registered underwritten public offering of $200.0 million in aggregate principal amount of 5.20% senior notes due October 2047

Senior Notes (Summary of Seni_2

Senior Notes (Summary of Senior Notes) (Parenthetical) (Details) - USD ($) $ in Thousands	Feb. 15, 2030	Oct. 27, 2017	Jul. 31, 2016	Sep. 30, 2021	Dec. 31, 2020	May 31, 2020	Oct. 31, 2017	Jul. 31, 2014
Debt Instrument [Line Items]
Long-term Debt				$ 1,113,210	$ 1,112,409
Senior notes 4.25% due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage				4.25%
Long-term Debt								$ 300,000
Debt instrument, maturity date				Jul. 31, 2024
Redemption price, percentage of principal amount				100.00%
Additional issuance of long-term debt			$ 200,000
Senior notes 4.00% due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage				4.00%
Long-term Debt						$ 400,000
Debt instrument, maturity date				May 31, 2030
Senior notes 4.00% due 2030 [Member] | After February 15, 2030 [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal amount				100.00%
Senior notes 4.00% due 2030 [Member] | Measurement Input, Discount Rate [Member] | Prior to February 15, 2030 [Member]
Debt Instrument [Line Items]
Redemption at treasury rate basis point				0.50%
Senior notes 4.00% due 2030 [Member] | Forecast [Member]
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	100.00%
Senior notes 5.20% due 2047 [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage				5.20%
Long-term Debt							$ 200,000
Debt instrument, maturity date				Oct. 31, 2047
Redemption price, percentage of principal amount				100.00%
Additional issuance of long-term debt		$ 25,000

Senior Notes (Schedule Of Corpo

Senior Notes (Schedule Of Corporate Debt Principal Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Senior notes, net	$ 1,113,210	$ 1,112,409
Non Recourse Debt [Member]
Debt Instrument [Line Items]
2024	500,000
Thereafter	625,000
Senior notes, net	$ 1,125,000

Bank Deposits (Schedule of Depo

Bank Deposits (Schedule of Deposits) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Demand deposits (interest-bearing)	$ 19,729,032	$ 16,886,953
Demand deposits (non-interest-bearing)	635,059	411,890
Certificates of deposit	34,783	97,654
Bank deposits	$ 20,398,874	$ 17,396,497

Bank Deposits (Narrative) (Deta

Bank Deposits (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Bank Deposits [Line Items]
Weighted average interest rate on deposits	0.03%	0.09%
Brokerage Customers Deposits [Member]
Bank Deposits [Line Items]
Deposits of related parties	$ 18,600	$ 16,000
Stifel Nicolaus [Member]
Bank Deposits [Line Items]
Interest bearing and time deposits of executive officers, directors, and affiliates	$ 9.9	$ 6.7

Bank Deposits (Scheduled Maturi

Bank Deposits (Scheduled Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Within one year	$ 250	$ 2,719
One to three years	13	409
Three to five years		254
Certificates of deposit, less than $100,000	263	3,382
Within one year	24,495	63,650
One to three years	10,025	30,622
Certificates of deposit, $100,000 and greater	34,520	94,272
Total certificates of deposit	$ 34,783	$ 97,654

Disclosures About Offsetting _3

Disclosures About Offsetting Assets and Liabilities (Financial Assets and Derivative Assets that are Subject to Offset) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Offsetting [Abstract]
Gross amounts of recognized assets, Securities borrowing	$ 314,154	$ 313,131
Net amounts presented in the Statement of Financial Condition, Securities borrowing	314,154	313,131
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities borrowing	(39,225)	(46,183)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities borrowing	(260,229)	(244,578)
Securities borrowed, Net amount	14,700	22,370
Gross amounts of recognized assets, Reverse repurchase agreements	598,535	217,930
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	598,535	217,930
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	(10,655)	(17,992)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities purchased under agreements to resell	(584,240)	(199,110)
Securities purchased under agreements to resell, Net amount	3,640	828
Gross amounts of recognized assets	912,689	531,061
Net amounts presented in the Statements of Financial Condition	912,689	531,061
Gross amounts not offset in the Statement of Financial Position	(49,880)	(64,175)
Gross amounts not offset in the Statement of Financial Position, Collateral received	(844,469)	(443,688)
Net amount	$ 18,340	$ 23,198

Disclosures About Offsetting _4

Disclosures About Offsetting Assets And Liabilities (Financial Assets And Derivative Assets That Are Subject To Offset) (Details) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Offsetting Assets [Line Items]
Fair value of securities pledged as collateral	$ 584,240	$ 199,110
Fair Value Of Securities Pledged As Collateral [Member]
Offsetting Assets [Line Items]
Fair value of securities pledged as collateral	$ 594,900	$ 217,300

Disclosures About Offsetting _5

Disclosures About Offsetting Assets and Liabilities (Financial Liabilities and Derivative Liabilities that are Subject to Offset) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Offsetting [Abstract]
Gross amounts of recognized liabilities, Securities lending	$ (183,564)	$ (145,124)
Net amounts presented in the Statement of Financial Condition, Securities lending	(183,564)	(145,124)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities lending	39,225	46,183
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities lending	144,334	98,925
Securities lending, Net amount	(5)	(16)
Gross amounts of recognized liabilities, Securities purchased under agreements to resell	(195,451)	(190,955)
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	(195,451)	(190,955)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	10,655	17,992
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities purchased under agreements to resell	184,796	172,963
Gross amounts of recognized liabilities	(379,015)	(336,079)
Net amounts presented in the Statement of Financial Condition	(379,015)	(336,079)
Gross amounts not offset in the Statement of Financial Position, Financial instruments	49,880	64,175
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged	329,130	271,888
Net amount	$ (5)	$ (16)

Disclosures About Offsetting _6

Disclosures About Offsetting Assets And Liabilities (Financial Liabilities And Derivative Liabilities That Are Subject To Offset) (Details) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Offsetting Liabilities [Line Items]
Fair value of securities pledged as collateral to counter party	$ 184,796		$ 172,963
U.S. Government Agency Securities And U.S. Government Securities And Corporate Fixed Income Securities [Member] | Fair Value Of Securities Pledged As Collateral [Member]
Offsetting Liabilities [Line Items]
Fair value of securities pledged as collateral to counter party		$ 200,600	$ 200,200

Commitments, Guarantees, and _2

Commitments, Guarantees, and Contingencies (Narrative) (Details) - To Be Announced Security Contracts [Member] $ in Millions	Sep. 30, 2021USD ($)
Loss Contingencies [Line Items]
Fair value of the TBA securities	$ 109.9
Purchase Commitments [Member]
Loss Contingencies [Line Items]
Estimated fair value of the purchase commitments	$ 109.9

Regulatory Capital Requiremen_3

Regulatory Capital Requirements (Narrative) (Details) $ in Millions	Sep. 30, 2021USD ($)
Our Other Broker-Dealer Subsidiaries
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Ratio of indebtedness to net capital	15
Stifel Nicolaus [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Aggregate debit balances	49.80%
Net capital	$ 654.9
Excess of minimum required net capital	628.6
Stifel Financial Corp. [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Net capital under the alternative method	$ 1
Aggregate debit balances	2.00%

Regulatory Capital Requiremen_4

Regulatory Capital Requirements (Schedule Of Total Risk-Based, Tier 1 Risk-Based, And Tier 1 Leverage Ratios) (Details) $ in Thousands	Sep. 30, 2021USD ($)
Stifel Financial Corp. [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 3,501,734
Tier 1 capital, Actual Ratio	0.206
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 1,019,591
Tier 1 capital For Capital Adequacy Purposes, Ratio	6
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,359,454
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8
Total capital, Actual Amount	$ 3,643,378
Total capital, Actual Ratio	0.214
Total capital For Capital Adequacy Purposes, Amount	$ 1,359,454
Total capital For Capital Adequacy Purposes, Ratio	8
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,699,318
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10
Tier 1 leverage, Actual Amount	$ 3,501,734
Tier 1 leverage, Actual Ratio	0.120
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 1,164,911
Tier 1 leverage For Capital Adequacy Purposes, Ratio	4
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,456,139
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5
Stifel Financial Corp. [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 2,816,734
Tier 1 capital, Actual Ratio	0.166
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 764,693
Tier 1 capital For Capital Adequacy Purposes, Ratio	4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,104,557
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.5
Stifel Bank & Trust [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 1,145,805
Tier 1 capital, Actual Ratio	0.107
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 643,629
Tier 1 capital For Capital Adequacy Purposes, Ratio	6
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 858,172
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8
Total capital, Actual Amount	$ 1,250,328
Total capital, Actual Ratio	0.117
Total capital For Capital Adequacy Purposes, Amount	$ 858,172
Total capital For Capital Adequacy Purposes, Ratio	8
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,072,715
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10
Tier 1 leverage, Actual Amount	$ 1,145,805
Tier 1 leverage, Actual Ratio	0.070
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 651,241
Tier 1 leverage For Capital Adequacy Purposes, Ratio	4
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 814,051
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5
Stifel Bank & Trust [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 1,145,805
Tier 1 capital, Actual Ratio	0.107
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 482,722
Tier 1 capital For Capital Adequacy Purposes, Ratio	4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 697,264
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.5
Stifel Bank [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 309,150
Tier 1 capital, Actual Ratio	0.209
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 88,843
Tier 1 capital For Capital Adequacy Purposes, Ratio	6
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 118,457
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8
Total capital, Actual Amount	$ 316,431
Total capital, Actual Ratio	0.214
Total capital For Capital Adequacy Purposes, Amount	$ 118,457
Total capital For Capital Adequacy Purposes, Ratio	8
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 148,071
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10
Tier 1 leverage, Actual Amount	$ 309,150
Tier 1 leverage, Actual Ratio	0.071
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 174,525
Tier 1 leverage For Capital Adequacy Purposes, Ratio	4
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 218,157
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5
Stifel Bank [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 309,150
Tier 1 capital, Actual Ratio	0.209
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 66,632
Tier 1 capital For Capital Adequacy Purposes, Ratio	4.5
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 96,246
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.5

Operating Leases (Narrative) (D

Operating Leases (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Lessee Lease Description [Line Items]
Operating lease right-of-use assets, net	$ 756,885	$ 793,181
Operating lease liabilities	$ 804,377	$ 839,800
Minimum [Member] | Office Space and Office Equipment [Member]
Lessee Lease Description [Line Items]
Operating leases remaining lease term	1 year
Maximum [Member] | Office Space and Office Equipment [Member]
Lessee Lease Description [Line Items]
Operating leases remaining lease term	15 years

Operating Leases - Schedule of

Operating Leases - Schedule of Net Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee Disclosure [Abstract]
Operating lease cost	$ 25,802	$ 25,251	$ 76,292	$ 73,172
Short-term lease cost	110	590	343	2,892
Variable lease cost	265	20	606	62
Sublease income	(643)	(997)	(1,951)	(2,901)
Net lease cost	$ 25,534	$ 24,864	75,290	$ 73,225
Operating lease cash flows			73,589
Right-of-use assets obtained in exchange for new operating lease liabilities			$ 32,189
Weighted-average remaining lease term	11 years 9 months 18 days		11 years 9 months 18 days
Weighted-average discount rate	4.14%		4.14%

Operating Leases - Schedule o_2

Operating Leases - Schedule of Information About Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Lessee Disclosure [Abstract]
Remainder of 2021	$ 25,387
2022	100,075
2023	98,372
2024	96,377
2025	94,537
Thereafter	617,407
Total undiscounted lease payments	1,032,155
Imputed interest	(227,778)
Total operating lease liabilities	$ 804,377	$ 839,800

Revenues from Contracts with _3

Revenues from Contracts with Customers (Schedule of Total Revenues Broken Out by Revenues from Contracts with Customers and Other Sources of Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Revenue from contracts with customers	$ 880,472	$ 636,899	$ 2,604,651	$ 1,875,321
Other	5,092	15,329	30,331	32,408
Total revenue from contracts with customers	880,472	636,899	2,604,651	1,875,321
Other sources of revenue:
Interest	141,844	114,411	402,975	403,956
Principal transactions	118,977	140,883	436,580	445,566
Other	13,668	4,929	27,298	18,571
Total revenues	1,154,961	897,122	3,471,504	2,743,414
Commissions [Member]
Revenues:
Revenue from contracts with customers	189,239	172,654	598,432	560,780
Investment Banking [Member]
Revenues:
Revenue from contracts with customers	372,279	218,134	1,088,010	614,637
Asset Management and Service Fees [Member]
Revenues:
Revenue from contracts with customers	$ 313,862	$ 230,782	$ 887,878	$ 667,496

Revenues from Contracts with _4

Revenues from Contracts with Customers (Revenues from Contracts with Customers Disaggregated by Major Business Activity and Primary Geographic Regions) (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2021		Sep. 30, 2020		Sep. 30, 2021		Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Commissions		$ 189,239	[1]	$ 172,654	[1]	$ 598,432	[1]	$ 560,780
Investment banking		372,279		218,134		1,088,010		614,637
Revenue from contracts with customers		880,472		636,899		2,604,651		1,875,321
Other		5,092		15,329		30,331		32,408
Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	164,061		137,292		542,645		359,885
Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	208,218		80,842		545,365		254,752
Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		313,862		230,782		887,878		667,496
Global Wealth Management [Member]
Disaggregation Of Revenue [Line Items]
Commissions		133,998	[1]	120,600	[1]	421,156	[1]	373,653
Investment banking		11,580		8,113		37,027		26,462
Revenue from contracts with customers		464,622		374,013		1,374,529		1,097,665
Other		5,206		14,535		28,552		30,104
Global Wealth Management [Member] | Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	11,580		8,113		37,027		26,443
Global Wealth Management [Member] | Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]							19
Global Wealth Management [Member] | Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		313,838		230,765		887,794		667,446
Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Commissions		55,241	[1]	52,054	[1]	177,276	[1]	187,127
Investment banking		360,699		210,021		1,050,983		588,175
Revenue from contracts with customers		415,964		262,092		1,228,343		775,352
Institutional Group [Member] | Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	152,481		129,179		505,618		333,442
Institutional Group [Member] | Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	208,218		80,842		545,365		254,733
Institutional Group [Member] | Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		24		17		84		50
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		(114)		794		1,779		2,304
Other		(114)		794		1,779		2,304
United States [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		812,595		583,948		2,372,737		1,709,297
United States [Member] | Global Wealth Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		464,622		374,013		1,374,529		1,097,665
United States [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		348,087		209,141		996,429		609,328
United States [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		(114)		794		1,779		2,304
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		46,267		30,959		137,482		110,053
United Kingdom [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		46,267		30,959		137,482		110,053
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		8,522		10,859		30,287		28,731
Other [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		8,522		10,859		30,287		28,731
Canada [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		13,088		11,133		64,145		27,240
Canada [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		$ 13,088		$ 11,133		$ 64,145		$ 27,240
[1]	Excludes revenues not derived from contracts with customers included in the Other segment.

Revenues from Contracts with _5

Revenues from Contracts with Customers (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Receivables related to contract with customers		$ 180,000,000	$ 148,600,000
Impairment related to receivables	$ 0
Deferred Revenue		$ 16,800,000	$ 12,100,000

Interest Income and Interest _3

Interest Income and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest Income Expense Net [Abstract]
Loans held for investment, net	$ 95,075	$ 76,281	$ 274,693	$ 250,565
Investment securities	34,247	31,966	95,738	121,630
Margin balances	6,624	5,803	19,001	22,298
Financial instruments owned	3,581	2,924	9,019	10,357
Other	2,317	(2,563)	4,524	(894)
Total interest income	141,844	114,411	402,975	403,956
Senior notes	11,850	15,411	35,924	39,677
Bank deposits	1,111	1,478	3,608	13,324
Other	(2,938)	(3,067)	(891)	(1,738)
Total interest expense	$ 10,023	$ 13,822	$ 38,641	$ 51,263

Employee Incentive, Deferred _2

Employee Incentive, Deferred Compensation, And Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to grant			8,200,000
Stock-based compensation			$ 85,283	$ 80,987
Contributions to profit sharing	$ 3,800	$ 3,900	11,400	11,000
Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 46,100	$ 39,700	$ 134,500	$ 116,000
Restricted Stock Units, PRSUs, and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of stock awards outstanding	19,500,000		19,500,000
Unvested stock awards outstanding	16,800,000		16,800,000
Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			5 years
Award performance period in years			4 years
Performance-based Restricted Stock Units [Member] | One to Four Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of earned award vested			80.00%
Performance-based Restricted Stock Units [Member] | Fifth Year [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of earned award vested			20.00%
Restricted Stock Units and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to non-vested options	$ 588,900		$ 588,900
Weighted-average period, compensation cost expected to recognized, in years			2 years 7 months 6 days
SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Elective deferrals vested percentage	100.00%		100.00%
Percentage of earnings deferred into company stock units	5.00%		5.00%
Percentage of earnings deferred into company stock units, Additional elective deferral			1.00%
Minimum [Member] | Deferred Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] | Deferred Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] | Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Minimum [Member] | Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential percentage of converted shares			0.00%
Minimum [Member] | SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			1 year
Maximum [Member] | Deferred Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			8 years
Maximum [Member] | Deferred Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			10 years
Maximum [Member] | Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			5 years
Maximum [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			10 years
Maximum [Member] | Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential percentage of converted shares			200.00%
Maximum [Member] | SWAP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period in years			10 years

Off-Balance Sheet Credit Risk (

Off-Balance Sheet Credit Risk (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
General settlement period of securities transactions	2 days
Fair value of securities accepted as collateral permitted to sell or repledge	$ 2,400	$ 1,800
Fair value of collateral securities sold or repledged	195.5	191
Outstanding commitments to originate loans	875.3	889
Letters of credit outstanding	25.6	31.8
Unfunded Commitment [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Expected credit losses	20.2
Unused Lines Of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Unused lines of credit to commercial and consumer borrowers	$ 3,500	$ 2,500
Standby Letters of Credit [Member] | Maximum [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit, expiration period	1 year

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	9 Months Ended
	Sep. 30, 2021Segment
Segment Reporting Information [Line Items]
Number of business segments	3
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Number of businesses within operating segment	2

Segment Reporting (Schedule Of

Segment Reporting (Schedule Of Operating Information, Segment) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net revenues	[1]	$ 1,144,938	$ 883,300	$ 3,432,863	$ 2,692,151
Income/(loss) before income taxes		256,502	158,393	748,419	416,459
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]	655,533	526,836	1,924,595	1,615,574
Income/(loss) before income taxes		232,119	178,930	682,655	529,422
Institutional Group [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]	492,284	363,365	1,519,176	1,093,699
Income/(loss) before income taxes		125,092	76,841	383,774	201,630
Other Segments [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]	(2,879)	(6,901)	(10,908)	(17,122)
Income/(loss) before income taxes		$ (100,709)	$ (97,378)	$ (318,010)	$ (314,593)
[1]	No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2021 or 2020.

Segment Reporting (Schedule O_2

Segment Reporting (Schedule Of Operating Information, Segment) (Parenthetical) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting [Abstract]
Net revenues accounted for by individual client, maximum percentage	10.00%	10.00%	10.00%	10.00%

Segment Reporting (Schedule O_3

Segment Reporting (Schedule Of Information Of Total Assets On Segment Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total assets	$ 30,820,334	$ 26,604,254
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets	25,152,551	21,743,202
Institutional Group [Member]
Segment Reporting Information [Line Items]
Total assets	5,161,215	3,733,661
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets	$ 506,568	$ 1,127,391

Segment Reporting (Schedule O_4

Segment Reporting (Schedule Of Net Revenues Earned On Major Geographical Areas) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Total net revenues	[1]	$ 1,144,938	$ 883,300	$ 3,432,863	$ 2,692,151
United States [Member]
Segment Reporting Information [Line Items]
Total net revenues		1,067,901	814,301	3,142,337	2,485,336
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total net revenues		57,413	45,705	177,138	147,097
Canada [Member]
Segment Reporting Information [Line Items]
Total net revenues		9,523	10,713	76,535	24,338
Other [Member]
Segment Reporting Information [Line Items]
Total net revenues		$ 10,101	$ 12,581	$ 36,853	$ 35,380
[1]	No individual client accounted for more than 10 percent of total net revenues for the three and nine months ended September 30, 2021 or 2020.

Earnings Per Share (Computation

Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income		$ 192,376	$ 120,527	$ 563,468	$ 315,003
Preferred dividends		9,689	9,897	26,267	19,584
Net income available to common shareholders		$ 182,687	$ 110,630	$ 537,201	$ 295,419
Average shares used in basic computation		107,379	105,941	107,655	106,221
Dilutive effect of stock options and units	[1]	11,096	7,835	10,700	7,347
Average shares used in diluted computation		118,475	113,775	118,355	113,568
Basic		$ 1.70	$ 1.04	$ 4.99	$ 2.78
Diluted		$ 1.54	$ 0.97	$ 4.54	$ 2.60
[1]	Diluted earnings per share is computed on the basis of the weighted-average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method.

Earnings Per Share (Details)

Earnings Per Share (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Cash dividends declared per common share	$ 0.15	$ 0.11	$ 0.45	$ 0.33
Cash dividends paid per common share	$ 0.15	$ 0.11	$ 0.45	$ 0.33

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 20, 2021	Jul. 22, 2021	Nov. 11, 2020	May 19, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Number of shares authorized to be repurchased					11,900,000		11,900,000
Purchase of treasury stock					$ 44.8		$ 86.4	$ 56.5
Treasury stock acquired, Shares,					700,000	0	1,300,000	1,700,000
Treasury Stock Acquired, Average Cost Per Share					$ 66.74		$ 65.69	$ 33.08
Stock Dividend			50.00%
Preferred stock, par value					$ 1	$ 1	$ 1	$ 1	$ 1
Non-Cumulative Perpetual Preferred Stock, Series C [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock				$ 225
Stock Dividend				6.125%
Preferred stock, par value				$ 1
Preferred stock liquidation preference per depositary share				25
Preferred stock, liquidation preference per share				$ 25,000
Preferred stock, redemption terms							The Company may redeem the Series C preferred stock at its option, subject to regulatory approval, on or after June 15, 2025.
Series C Preferred Stock [Member] | Over-Allotment Option [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock				$ 25
Non-cumulative Perpetual Series D Preferred Stock [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Stock Dividend		4.50%
Preferred stock, par value		$ 1
Preferred stock liquidation preference per depositary share		25
Preferred stock, liquidation preference per share		$ 25,000
Preferred stock, redemption terms							The Company may redeem the Series D preferred stock at its option, subject to regulatory approval, on or after August 15, 2026.
Underwritten registered public offering		$ 300
Non-cumulative Perpetual Series A Preferred Stock [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Stock Dividend	6.25%
Preferred stock redemption price per depositary share	$ 25,000,000
Business Bancshares, Inc. [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of common stock							2,500,000

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Assets in partnership	$ 30,820,334	$ 26,604,254
Variable Interest Entity Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets in partnership	$ 365,700

Subsequent Events (Details)

Subsequent Events (Details)	9 Months Ended
	Sep. 30, 2021Event
Subsequent Events [Abstract]
Number of types of subsequent events	2