Stifel Financial (SF) 10-K 19 Feb 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Feb. 12, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	STIFEL FINANCIAL CORP
Entity Central Index Key	0000720672
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Tax Identification Number	43-1273600
Entity Address, Address Line One	501 North 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
Entity File Number	001-09305
Entity Incorporation, State or Country Code	DE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Public Float			$ 3.4
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Portions of the Proxy Statement for the annual meeting of shareholders, to be filed within 120 days of our fiscal year ended December 31, 2020, are incorporated by reference in Part III hereof.
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		104,973,677
Depository Shares, each representing 1/1,000th interest in a share of 6.25% Non-Cumulative Preferred Stock, Series A [Member]
Document Information [Line Items]
Trading Symbol	SF-PA
Title of 12(b) Security	Depository Shares, each representing 1/1,000th interest in a share of 6.25% Non-Cumulative Preferred Stock, Series A
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		6,000
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
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		Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents		$ 2,279,274	$ 1,142,596
Cash segregated for regulatory purposes		172,932	131,374
Receivables:
Brokerage clients, net		936,500	1,351,786
Brokers, dealers, and clearing organizations		549,492	627,790
Securities purchased under agreements to resell	[1]	217,930	385,008
Financial instruments owned, at fair value		694,028	972,932
Available-for-sale securities, at fair value		2,230,297	3,254,737
Held-to-maturity securities, at amortized cost		4,117,384	2,856,219
Loans:
Held for investment, net		11,006,760	9,624,042
Held for sale, at lower of cost or market		551,248	389,693
Investments, at fair value		113,862	79,972
Fixed assets, net		961,096	1,107,928
Goodwill		1,181,998	1,194,074
Intangible assets, net		140,984	161,773
Loans and advances to financial advisors and other employees, net		596,993	525,332
Deferred tax assets, net		136,477	104,380
Other assets		716,999	700,589
Total assets		26,604,254	24,610,225
Payables:
Brokerage clients		1,063,937	740,444
Brokers, dealers, and clearing organizations		177,937	712,291
Drafts		117,737	119,758
Securities sold under agreements to repurchase	[2]	190,955	391,634
Bank deposits		17,396,497	15,332,581
Financial instruments sold, but not yet purchased, at fair value		437,978	662,852
Accrued compensation		638,298	507,009
Accounts payable and accrued expenses		1,169,740	1,146,856
Federal Home Loan Bank advances			250,000
Senior notes, net		1,112,409	1,017,010
Debentures to Stifel Financial Capital Trusts		60,000	60,000
Total liabilities		22,365,488	20,940,435
Equity
Preferred stock − $1 par value; authorized 3,000,000 shares; issued 21,400 and 12,400 shares, respectively		535,000	310,000
Common stock − $0.15 par value; authorized 194,000,000 shares; issued 111,661,621 and 111,661,670 shares, respectively		16,749	16,749
Additional paid-in-capital		1,888,982	1,903,703
Retained earnings		2,078,135	1,715,704
Accumulated other comprehensive income/(loss)		27,639	(11,705)
Treasury stock, at cost, 8,512,584 and 9,169,626 shares, respectively		(307,739)	(319,660)
Total Stifel Financial Corp. shareholders’ equity		4,238,766	3,614,791
Non-controlling interests			54,999
Total equity		4,238,766	3,669,790
Total liabilities and equity		$ 26,604,254	$ 24,610,225
[1]	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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, respectively.
[2]	Collateral pledged includes the fair value of securities pledged by our company to the counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Condition (Parenthetical) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
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	21,400	12,400
Common stock, par value	$ 0.15	$ 0.15
Common stock, shares authorized	194,000,000	194,000,000
Common stock, shares issued	111,661,621	111,661,670
Treasury stock, shares	8,512,584	9,169,626

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Revenue from contracts with customers		$ 2,678,888	$ 2,352,237
Principal transactions		588,303	404,751	$ 351,378
Interest		523,832	724,882	646,449
Other income		75,345	52,378	25,553
Total revenues		3,817,839	3,514,961	3,194,957
Interest expense		65,778	177,931	170,076
Net revenues	[1]	3,752,061	3,337,030	3,024,881
Non-interest expenses:
Compensation and benefits		2,279,335	1,978,116	1,770,762
Occupancy and equipment rental		274,664	242,893	222,384
Communications and office supplies		164,736	147,428	140,254
Commissions and floor brokerage		55,960	44,011	41,967
Provision for credit losses		33,925	9,977	18,366
Other operating expenses		292,281	315,467	296,786
Total non-interest expenses		3,100,901	2,737,892	2,490,519
Income before income tax expense		651,160	599,138	534,362
Provision for income taxes		147,688	149,152	140,394
Net income		503,472	449,986	393,968
Net income applicable to non-controlling interests			1,590
Net income applicable to Stifel Financial Corp.		503,472	448,396	393,968
Preferred dividends		27,261	17,319	9,375
Net income available to common shareholders		$ 476,211	$ 431,077	$ 384,593
Earnings per common share:
Basic		$ 4.49	$ 3.99	$ 3.57
Diluted		4.16	3.66	3.15
Cash dividends declared per common share		$ 0.45	$ 0.40	$ 0.32
Weighted-average number of common shares outstanding:
Basic		106,174	107,997	107,679
Diluted		114,573	117,878	121,982
Commissions [Member]
Revenues:
Revenue from contracts with customers		$ 760,627	$ 667,494	$ 657,732
Investment Banking [Member]
Revenues:
Revenue from contracts with customers		952,308	817,421	707,670
Asset Management and Service Fees [Member]
Revenues:
Revenue from contracts with customers		$ 917,424	$ 848,035	$ 806,175
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2020, 2019, and 2018.

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 503,472	$ 449,986	$ 393,968
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities, net of tax	[1],[2],[3],[4]	33,133	60,288	(36,254)
Changes in unrealized losses on cash flow hedging instruments, net of tax	[2],[4],[5]	(651)	(4,402)	(792)
Foreign currency translation adjustment, net of tax	[2],[4]	6,862	4,932	(5,691)
Total other comprehensive income/(loss), net of tax		39,344	60,818	(42,737)
Comprehensive income		542,816	510,804	351,231
Net income applicable to non-controlling interest			1,590
Comprehensive income applicable to Stifel Financial Corp.		$ 542,816	$ 509,214	$ 351,231
[1]	As part of the adoption of ASU 2019-04, in the third quarter of 2019, the Company made a one-time election to transfer a portion of its held-to-maturity securities to available-for-sale. The transfer resulted in a net of tax increase to comprehensive income of $17.9 million. See Notes 2 and 7 for additional information on the transfer.
[2]	Net of a tax expense of $11.5 million, tax expense of $20.2 million, and tax benefit of $11.2 million for the years ended December 31, 2020, 2019, and 2018, respectively.
[3]	Reclassifications to earnings were immaterial for the years ended December 31, 2020 and 2019. Amounts are net of reclassifications to earnings of realized losses of $2.9 million for the year ended December 31, 2018.
[4]	The adoption of ASU 2018-02 on January 1, 2018, resulted in a reclassification of $3.1 million to retained earnings related to cash flow hedges and investment portfolio risk. The reclassification is reflected in the activity for the year ended December 31, 2018. See Note 2 for further details.
[5]	Reclassifications to earnings were immaterial for the year ended December 31, 2020. Amounts are net of reclassifications to earnings of gains of $3.3 million and $4.9 million for the years ended December 31, 2019 and 2018, respectively.

Consolidated Statements Of Co_2

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other comprehensive income/(loss), tax	$ (11.5)	$ (20.2)	$ 11.2
Reclassifications to earnings of realized gains/(losses) on available-for-sale securities			(2.9)
Increase in accumulated comprehensive income		17.9
Reclassifications to earnings of gains/(losses) on cash flow hedging instruments		$ 3.3	$ 4.9
ASU 2019-04 [Member]
Increase in accumulated comprehensive income	17.9
ASU 2018-02 [Member]
Reclassification to retained earnings related to cash flow hedges and investment portfolio risk	$ 3.1

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands		Total		Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member]Cumulative Effect, Period of Adoption, AdjustmentRevision of Prior Period, Adjustment	AOCI Attributable to Parent	AOCI Attributable to ParentCumulative Effect, Period of Adoption, AdjustmentRevision of Prior Period, Adjustment	Treasury Stock at Cost [Member]	Noncontrolling Interest	Parent [Member]
Balance, beginning of year at Dec. 31, 2017				$ 150,000	$ 16,329	$ 1,727,765	$ 1,033,526		$ (26,736)		$ (39,308)
Distributions under employee plans					123	(60,256)	(10,985)				28,655
Common stock repurchased											(170,204)
Issuance of common stock for acquisitions					297	110,374
Unit amortization, net of forfeitures						102,971
Net income		$ 393,968					393,968
Dividends declared, Common							(41,450)
Dividends declared, Preferred							(9,375)
Dividends declared to equity-award holders						6,812
Other						55	1,943
Unrealized gains/(losses) on securities, net of tax		(36,254)	[1],[2],[3],[4]						(36,254)
Unrealized losses on cash flow hedging activities, net of tax									(792)
Foreign currency translation adjustment, net of tax		(5,691)	[2],[4]						(5,691)
Capital contributions from non-controlling interest holders												$ 30,000
Balance, end of year at Dec. 31, 2018		3,197,593		150,000	16,749	1,887,721	1,366,503		(72,523)		(180,857)	30,000	$ 3,167,593
Cumulative adjustments for accounting changes	[5]							$ (1,124)		$ (3,050)
Distributions under employee plans						(91,898)	(19,819)				76,627
Common stock repurchased		(215,400)									(215,430)
Unit amortization, net of forfeitures						112,864
Net income		448,396					449,986					1,590
Dividends declared, Common							(50,743)
Dividends declared, Preferred							(17,319)
Issuance of preferred stock				160,000		(5,012)
Other						28	(1,787)
Unrealized gains/(losses) on securities, net of tax		60,288	[1],[2],[3],[4]						60,288
Unrealized losses on cash flow hedging activities, net of tax									(4,402)
Foreign currency translation adjustment, net of tax		4,932	[2],[4]						4,932
Capital contributions from non-controlling interest holders												26,800
Distributions to non-controlling interest holders												(3,391)
Balance, end of year at Dec. 31, 2019		3,669,790		310,000	16,749	1,903,703	1,715,704		(11,705)		(319,660)	54,999	3,614,791
Cumulative adjustments for accounting changes	[5]							(11,117)
Distributions under employee plans						(126,514)	(49,427)				70,182
Common stock repurchased		(58,300)									(58,261)
Unit amortization, net of forfeitures						118,229
Net income		503,472					503,472
Dividends declared, Common							(56,967)
Dividends declared, Preferred							(27,261)
Issuance of preferred stock				225,000		(7,005)
Dividends declared to equity-award holders						350
Other						219	386
Unrealized gains/(losses) on securities, net of tax		33,133	[1],[2],[3],[4]						33,133
Unrealized losses on cash flow hedging activities, net of tax									(651)
Foreign currency translation adjustment, net of tax		6,862	[2],[4]						6,862
Deconsolidation of non-controlling interest												$ (54,999)
Balance, end of year at Dec. 31, 2020		$ 4,238,766		$ 535,000	$ 16,749	$ 1,888,982	$ 2,078,135		$ 27,639		$ (307,739)		$ 4,238,766
Cumulative adjustments for accounting changes	[5]							$ (7,772)
[1]	As part of the adoption of ASU 2019-04, in the third quarter of 2019, the Company made a one-time election to transfer a portion of its held-to-maturity securities to available-for-sale. The transfer resulted in a net of tax increase to comprehensive income of $17.9 million. See Notes 2 and 7 for additional information on the transfer.
[2]	Net of a tax expense of $11.5 million, tax expense of $20.2 million, and tax benefit of $11.2 million for the years ended December 31, 2020, 2019, and 2018, respectively.
[3]	Reclassifications to earnings were immaterial for the years ended December 31, 2020 and 2019. Amounts are net of reclassifications to earnings of realized losses of $2.9 million for the year ended December 31, 2018.
[4]	The adoption of ASU 2018-02 on January 1, 2018, resulted in a reclassification of $3.1 million to retained earnings related to cash flow hedges and investment portfolio risk. The reclassification is reflected in the activity for the year ended December 31, 2018. See Note 2 for further details.
[5]	Cumulative adjustments for accounting changes relate to the adoption of certain accounting updates. See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Consolidated Statements Of Ch_2

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
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 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows From Operating Activities:
Net income	$ 503,472	$ 449,986	$ 393,968
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	40,863	38,369	27,896
Amortization of loans and advances to financial advisors and other employees	103,983	95,053	85,374
Amortization of premium on investment portfolio	20,739	34,229	25,307
Provision for credit losses and allowance for loans and advances to financial advisors and other employees	33,925	11,007	19,601
Amortization of intangible assets	19,620	16,015	12,557
Deferred income taxes	(39,071)	(6,863)	14,254
Stock-based compensation	108,217	102,190	100,789
Unrealized losses/(gains) on investments	18,908	(7,922)	22,780
Other, net	(10,326)	(38,554)	(10,723)
Receivables:
Brokerage clients, net	415,286	(17,487)	182,619
Brokers, dealers, and clearing organizations	78,298	(8,655)	(56,467)
Securities purchased under agreements to resell	167,078	314,892	(187,680)
Financial instruments owned, including those pledged	278,904	335,548	(123,765)
Loans originated as held for sale	(3,019,290)	(1,848,568)	(1,341,108)
Proceeds from mortgages held for sale	2,894,742	1,782,455	1,345,109
Loans and advances to financial advisors and other employees	(179,995)	(210,646)	(116,921)
Other assets	(117,471)	(36,290)	(1,562)
Increase/(decrease) in operating liabilities, net of liabilities assumed:
Brokerage clients	323,493	(210,712)	9,173
Brokers, dealers, and clearing organizations	(71,144)	63,822	(16,383)
Drafts	(2,021)	14,871	(2,156)
Financial instruments sold, but not yet purchased	(224,874)	(284,510)	168,443
Other liabilities and accrued expenses	318,480	38,631	(21,579)
Net cash provided by operating activities	1,661,816	626,861	529,526
Cash Flows From Investing Activities:
Maturities, calls, sales, and principal paydowns of available-for-sale securities	896,746	1,224,619	1,244,434
Calls and principal paydowns of held-to-maturity securities	159,964	482,079	827,905
Sale of equipment			21,699
Sale or maturity of investments	2,139	14,699	24,445
Sale of other real estate owned		8,950
Disposition of business	37,000
Increase in loans held for investment, net	(1,441,303)	(1,208,817)	(1,079,546)
Payments for:
Purchase of available-for-sale securities	(864,200)	(239,965)	(550,162)
Purchase of held-to-maturity securities	(384,700)	(243,335)	(1,352,587)
Purchase of investments	(21,317)	(37,563)	(8,828)
Purchase of fixed assets	(73,364)	(157,897)	(108,207)
Acquisitions, net of cash acquired	(280)	(193,097)	(8,394)
Net cash used in investing activities	(1,689,315)	(350,327)	(989,241)
Cash Flows from Financing Activities:
Repayments of borrowings, net		(62,810)	(216,572)
Repayments of senior notes	(300,000)
Proceeds from issuance of senior notes, net	394,030
Repayments of Federal Home Loan Bank advances, net	(250,000)	(290,000)	(214,950)
Proceeds from non-controlling interests		26,800	30,000
Proceeds from preferred stock issuance, net	217,995	154,988
(Decrease)/increase in securities sold under agreements to repurchase	(200,679)	(168,069)	301,690
Increase/(decrease) in bank deposits, net	2,063,916	(531,032)	1,950,661
(Decrease)/increase in securities loaned	(463,210)	114,135	172,380
Tax payments related to shares withheld for stock-based compensation plans	(75,838)	(33,268)	(43,229)
Proceeds from stock option exercises			2,278
Repurchase of common stock	(58,261)	(215,430)	(170,204)
Cash dividends on preferred stock	(27,261)	(17,319)	(9,375)
Cash dividends paid to common stock and equity-award holders	(46,497)	(41,948)	(34,638)
Cash paid to employees upon settlement of equity awards	(27,101)
Extinguishment of Stifel Financial Capital Trust			(7,500)
Payment of contingent consideration	(28,221)	(9,526)	(12,846)
Other		(3,391)
Net cash provided by/(used in) financing activities	1,198,873	(1,076,870)	1,747,695
Effect of exchange rate changes on cash	6,862	4,932	(5,691)
Increase/(decrease) in cash, cash equivalents, and cash segregated for regulatory purposes	1,178,236	(795,404)	1,282,289
Cash, cash equivalents, and cash segregated for regulatory purposes at beginning of year	1,273,970	2,069,374	787,085
Cash, cash equivalents, and cash segregated for regulatory purposes at end of year	2,452,206	1,273,970	2,069,374
Supplemental disclosure of cash flow information:
Cash paid for income taxes, net of refunds	160,007	161,926	67,379
Cash paid for interest	84,821	183,012	169,724
Noncash investing and financing activities:
Unit grants, net of forfeitures	$ 125,033	$ 139,408	136,529
Issuance of common stock for acquisitions			$ 110,671

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	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Cash Flows [Abstract]
Cash and cash equivalents	$ 2,279,274	$ 1,142,596	$ 1,936,560
Cash segregated for regulatory purposes	172,932	131,374	132,814
Total cash, cash equivalents, and cash segregated for regulatory purposes	$ 2,452,206	$ 1,273,970	$ 2,069,374

Nature Of Operations And Basis

Nature Of Operations And Basis Of Presentation	12 Months Ended
	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature Of Operations And Basis Of Presentation	NOTE 1 – Nature of Operations and Basis of Presentation 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. (“KBW”), 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. The accompanying consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, which require management to make certain estimates and assumptions that affect the reported amounts. We consider significant estimates, which are most susceptible to change and impacted significantly by judgments, assumptions, and estimates, to be: valuation of financial instruments and investments in partnerships, accrual for contingencies, allowance for loan losses, derivative instruments and hedging activities, fair value of goodwill and intangible assets, provision for income taxes and related tax reserves, and forfeitures associated with stock-based compensation. Actual results could differ from those estimates. On March 27, 2020, the Company completed the sale of Ziegler Capital Management, LLC (“ZCM”), a wholly owned asset management subsidiary. The assets and liabilities of ZCM were classified as held for sale and are included in other assets and accounts payable and accrued expenses, respectively, at December 31, 2019. See Note 10 for further information. 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. For consolidated subsidiaries that are less than wholly owned, the third-party holdings of equity interests are referred to as non-controlling interests. The portion of shareholders’ equity that is attributable to non-controlling interests for such subsidiaries is presented as non-controlling interests, a component of total equity, in the consolidated statements of financial condition. Our non-controlling interest at December 31, 2019, represented a 27.5% third-party ownership of North Shore Aviation Holdings LLC (“North Shore”), which was a consolidated subsidiary of the Company that, through its subsidiary, owns airplane engines. On February 7, 2020, North Shore entered into a Credit Agreement with North Shore Aviation Trust Series 2020-1 (the “Trust”) whereby the Trust provided North Shore with a $120.0 million credit facility. North Shore was recapitalized with funding from the issuance of the senior notes and E-Certificates by the Trust. Upon the recapitalization, Stifel Bancorp’s equity in North Shore was redeemed. We deconsolidated the related assets, liabilities, and non-controlling interests of North Shore. 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, 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 28 for additional information on VIEs.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	NOTE 2 – Summary of Significant Accounting Policies Cash and Cash Equivalents We consider money market mutual funds and highly liquid investments with original maturities of three months or less that are not restricted or segregated to be cash equivalents. Cash and cash equivalents include deposits with banks, federal funds sold, money market mutual funds, and certificates of deposit. Cash and cash equivalents also include balances that our bank subsidiaries maintain at the Federal Reserve Bank. Cash Segregated for Regulatory Purposes Our broker-dealer subsidiaries are subject to Rule 15c3-3 under the Securities Exchange Act of 1934, which requires our company to maintain cash or qualified securities in a segregated reserve account for the exclusive benefit of its clients. In accordance with Rule 15c3-3, our company has portions of its cash segregated for the exclusive benefit of clients at December 31, 2020. Brokerage Client Receivables, Net Brokerage client receivables include receivables of our company’s broker-dealer subsidiaries, which represent amounts due on cash and margin transactions and are generally collateralized by securities owned by clients. Brokerage client receivables, primarily consisting of floating-rate loans collateralized by customer-owned securities, are charged interest at rates similar to other such loans made throughout the industry. The receivables are reported at their outstanding principal balance net of allowance for doubtful accounts. When a brokerage client receivable is considered to be impaired, the amount of the impairment is generally measured based on the fair value of the securities acting as collateral, which is measured based on current prices from independent sources, such as listed market prices or broker-dealer price quotations. Securities owned by customers, including those that collateralize margin or other similar transactions, are not reflected in the consolidated statements of financial condition. Securities Borrowed and Securities Loaned Securities borrowed require our company to deliver cash to the lender in exchange for securities and are included in receivables from brokers, dealers, and clearing organizations in the consolidated statements of financial condition. For securities loaned, we generally receive collateral in the form of cash in an amount in excess of the market value of securities loaned. Securities loaned are included in payables to brokers, dealers, and clearing organizations in the consolidated statements of financial condition. We monitor the market value of securities borrowed and loaned on a daily basis, with additional collateral obtained or refunded as necessary. Fees received or paid are recorded in interest revenue or interest expense in the consolidated statements of operations. Substantially all of these transactions are executed under master netting agreements, which gives us right of offset in the event of counterparty default; however, such receivables and payables with the same counterparty are not set off in the consolidated statements of financial condition. Securities Purchased Under Agreements to Resell and Repurchase Agreements Securities purchased under agreements to resell (“resale agreements”) are collateralized financing transactions that are recorded at their contractual amounts plus accrued interest. We obtain control of collateral with a market value equal to or in excess of the principal amount loaned and accrued interest under resale agreements. These agreements are short-term in nature and are generally collateralized by U.S. government securities, U.S. government agency securities, and corporate bonds. We value collateral on a daily basis, with additional collateral obtained when necessary to minimize the risk associated with this activity. Securities sold under agreements to repurchase (“repurchase agreements”) are collateralized financing transactions that are recorded at their contractual amounts plus accrued interest. We make delivery of securities sold under agreements to repurchase and monitor the value of collateral on a daily basis. When necessary, we will deliver additional collateral. Financial Instruments We measure certain financial assets and liabilities at fair value on a recurring basis, including cash equivalents, financial instruments owned, available-for-sale securities, investments, financial instruments sold, but not yet purchased, and derivatives. Other than those separately discussed in the notes to the consolidated financial statements, the remaining financial instruments are generally short-term in nature, and their carrying values approximate fair value. The fair value of a financial instrument is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., “the exit price”) in an orderly transaction between market participants at the measurement date. We have categorized our financial instruments measured at fair value into a three-level classification in accordance with Topic 820, “Fair Value Measurement,” Level 1 – Quoted prices (unadjusted) are available in active markets for identical assets or liabilities as of the measurement date. A quoted price for an identical asset or liability in an active market provides the most reliable fair value measurement, because it is directly observable to the market. Level 2 – Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the measurement date. The nature of these financial instruments includes instruments for which quoted prices are available but traded less frequently, derivative instruments whose fair value have 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 3 – Instruments that have little to no pricing observability as of the measurement date. These financial instruments do not have 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. Valuation of Financial Instruments When available, we use observable market prices, observable market parameters, or broker or dealer prices (bid and ask prices) to derive the fair value of financial instruments. In the case of financial instruments transacted on recognized exchanges, the observable market prices represent quotations for completed transactions from the exchange on which the financial instrument is principally traded. A substantial percentage of the fair value of our financial instruments owned, available-for-sale securities, investments, and financial instruments sold, but not yet purchased, are based on observable market prices, observable market parameters, or derived from broker or dealer prices. The availability of observable market prices and pricing parameters can vary from product to product. Where available, observable market prices and pricing or market parameters in a product may be used to derive a price without requiring significant judgment. In certain markets, observable market prices or market parameters are not available for all products, and fair value is determined using techniques appropriate for each particular product. These techniques involve some degree of judgment. For investments in illiquid or privately held securities that do not have readily determinable fair values, the determination of fair value requires us to estimate the value of the securities using the best information available. Among the factors we consider in determining the fair value of investments are the cost of the investment, terms and liquidity, developments since the acquisition of the investment, the sales price of recently issued securities, the financial condition and operating results of the issuer, earnings trends and consistency of operating cash flows, the long-term business potential of the issuer, the quoted market price of securities with similar quality and yield that are publicly traded, and other factors generally pertinent to the valuation of investments. In instances where a security is subject to transfer restrictions, the value of the security is based primarily on the quoted price of a similar security without restriction but may be reduced by an amount estimated to reflect such restrictions. The fair value of these investments is subject to a high degree of volatility and may be susceptible to significant fluctuation in the near term, and the differences could be material. The degree of judgment used in measuring the fair value of financial instruments generally correlates to the level of pricing observability. Pricing observability is impacted by a number of factors, including the type of financial instrument, whether the financial instrument is new to the market and not yet established, and the characteristics specific to the transaction. Financial instruments with readily available active quoted prices for which fair value can be measured from actively quoted prices generally will have a higher degree of pricing observability and a lesser degree of judgment used in measuring fair value. Conversely, financial instruments rarely traded or not quoted will generally have less, or no, pricing observability and a higher degree of judgment used in measuring fair value. See Note 5 for additional information on how we value our financial instruments. Available-for-Sale and Held-to-Maturity Securities Securities available for sale, which are carried at fair value, include U.S. government agency securities; state and municipal securities; agency, non-agency, and commercial mortgage-backed securities; corporate fixed income securities; and asset-backed securities, which primarily includes collateralized loan obligations. 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 asset-backed securities, consisting of collateralized loan obligation securities and student loan ARS. We evaluate each available-for-sale security where the value has declined below amortized cost. If our company intends to sell or believes it is more likely than not that it will be required to sell the debt security, it is written down to fair value through earnings. For available-for-sale debt securities our company intends to hold, we evaluate the debt securities for expected credit losses except for debt securities that are guaranteed by the U.S. Treasury or U.S. government agencies where we apply a zero credit loss assumption. For the remaining available-for-sale debt securities, we consider qualitative parameters such as internal and external credit ratings and the value of underlying collateral. If an available-for-sale debt security fails any of the qualitative parameters, a discounted cash flow analysis is used by our company to determine if a portion of the unrealized loss is a result of a credit loss. Any credit losses determined are recognized as an increase to the allowance for credit losses through provision expense recorded in the consolidated statement of operations in provision for credit losses. Cash flows expected to be collected are estimated using all relevant information available, such as remaining payment terms, prepayment speeds, the financial condition of the issuer, expected defaults, and the value of the underlying collateral. If any of the decline in fair value is related to market factors, that amount is recognized in accumulated other comprehensive income. In certain instances, the credit loss may exceed the total decline in fair value, in which case, the allowance recorded is limited to the difference between the amortized cost and the fair value of the asset. We separately evaluate our held-to-maturity debt securities for any credit losses. We perform a discounted cash flow analysis to estimate any credit losses, which are then recognized as part of the allowance for credit losses. For available-for-sale and held-to-maturity debt securities, we have established a nonaccrual policy that results in timely write-off of accrued interest. See Note 7 for more information. Unrealized gains and losses on our available-for-sale securities are reported, net of taxes, in accumulated other comprehensive income/(loss) included in shareholders’ equity. Amortization of premiums and accretion of discounts are recorded as interest income in the consolidated statements of operations using the interest method. Realized gains and losses from sales of securities available for sale are determined on a specific identification basis and are included in other income in the consolidated statements of operations in the period they are sold. For securities transferred from available-for-sale to held-to-maturity, carrying value also includes unrealized gains and losses recognized in accumulated other comprehensive income/(loss) at the date of transfer. Such unrealized gains or losses are accreted over the remaining life of the security with no impact on future net income. Loan Classification We classify loans based on our investment strategy and management’s assessment of our intent and ability to hold loans for the foreseeable future or until maturity. Management’s intent and ability with respect to certain loans may change from time to time depending on a number of factors, including economic, liquidity, and capital conditions. The accounting and measurement framework for loans differs depending on the loan classification. The classification criteria and accounting and measurement framework for bank loans and loans held for sale are described below. Bank Loans Bank loans consist of commercial and residential mortgage loans, commercial and industrial loans, stock-secured loans, home equity loans, construction loans, and consumer loans originated or acquired by Stifel Bancorp. Bank loans include those loans that management has the intent and ability to hold and are recorded at outstanding principal adjusted for any charge-offs, allowance for loan losses, deferred origination fees and costs, and purchased discounts. Loan origination costs, net of fees, and premiums and discounts on purchased loans are deferred and recognized over the contractual life of the loan as an adjustment of yield using the interest method. Bank loans are generally collateralized by real estate, real property, marketable securities, or other assets of the borrower. Interest income is recognized using the effective interest rate method, which is based upon the respective interest rates and the average daily asset balance. Discount accretion/premium amortization is recognized using the effective interest rate method, which is based upon the respective interest rate and expected lives of loans. Allowance for Credit Losses On January 1, 2020, we adopted the new accounting standard that requires the measurement of the allowance for credit losses, which includes the allowance for loan losses and the reserve for unfunded lending commitments, to be based on management’s best estimate of lifetime expected credit losses inherent in the Company’s relevant financial assets. The expected credit losses on our loan portfolio are referred to as the allowance for loan losses and are reported separately as a contra-asset to loans on the consolidated statement of financial condition. 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 provision for loan losses related to the loan portfolio and the provision for unfunded lending commitments are reported in the consolidated statement of operations in provision for credit losses. For loans, the expected credit loss is typically estimated using quantitative methods that consider a variety of factors, such as historical loss experience derived from proxy data, the current credit quality of the portfolio, as well as an economic outlook over the life of the loan. The life of the loan for closed-ended products is based on the contractual maturity of the loan adjusted for any expected prepayments. The contractual maturity includes any extension options that are at the sole discretion of the borrower. For open-ended products, the expected credit loss is determined based on the maximum repayment term associated with future draws from credit lines. In our loss forecasting framework, we incorporate forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios include variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to, unemployment rates, real estate prices, gross domestic product levels, corporate bond spreads, and long-term interest rate forecasts. To estimate losses for contractual periods that extend beyond the forecast horizon, we revert to an average historical loss experience. As any one economic outlook is inherently uncertain, we leverage multiple scenarios. The scenarios that are chosen each quarter and the amount of weighting given to each scenario depend on a variety of factors, including recent economic events, leading economic indicators, and industry trends. The reserve for unfunded lending commitments is estimated using the same scenarios, models, and economic data as the loan portfolio. The allowance for loan losses includes adjustments for qualitative reserves based on our company’s assessment that may not be adequately represented in the quantitative methods or the economic assumptions described above. For example, factors that we consider include changes in lending policies and procedures, business conditions, the nature and size of the portfolio, portfolio concentrations, the volume and severity of past due loans and nonaccrual loans, the effect of external factors such as competition, and legal and regulatory requirements, among others. Further, we consider the inherent uncertainty in quantitative models that are built on historical data. As a result of the uncertainty inherent in the quantitative models, other quantitative and qualitative factors are considered in adjusting allowance amounts, including, but not limited to, the following: model imprecision, imprecision in macroeconomic scenario forecasts, or changes in the economic environment affecting specific portfolio segments that deviate from the macroeconomic forecasts. The evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. Depending on changes in circumstances, future assessments of credit risk may yield materially different results from the prior estimates, which may require an increase or a decrease in the allowance for loan losses. The allowance for credit losses can also be impacted by unanticipated changes in asset quality of the portfolio. In addition, while we have incorporated our estimated impact of the coronavirus (“COVID-19”) pandemic on the economy into our allowance for credit losses, the ultimate impact of COVID-19 is still unknown, including how long economic activities will be impacted and what effect the unprecedented levels of government fiscal and monetary actions will have on the economy and our credit losses. Loans Held for Sale Loans that we intend to sell or for which we do not have the ability and intent to hold for the foreseeable future are classified as held for sale. Loans held for sale consist of fixed-rate and adjustable-rate residential and multi-family real estate mortgage loans intended for sale. Loans held for sale are stated at lower of cost or market value on an individual loan basis. Declines in market value below cost and any gains or losses on the sale of these assets are recognized in other income in the consolidated statements of operations. Market value is determined based on prevailing market prices for loans with similar characteristics or on sale contract prices. Deferred fees and costs related to these loans are not amortized but are recognized as part of the cost basis of the loan at the time it is sold. Because loans held for sale are reported at lower of cost or market value, an allowance for loan losses is not established for loans held for sale. Impaired Loans A loan is considered impaired when, based on current information and events, it is probable that the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement will not be collectible. Factors considered in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. We determine the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record, and the amount of the shortfall in relation to the principal and interest owed. We consider a loan a trouble debt restructuring when an existing borrower is granted concessionary rates or terms, which would not otherwise be offered. The concessions granted do not reflect current market conditions for a new loan of similar risk to another borrower in similar financial circumstances. Once a loan is determined to be impaired, when principal or interest becomes 90 days past due or when collection becomes uncertain, 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. Loans placed on non-accrual status are returned to accrual status when all delinquent principal and interest payments are collected and the collectibility of future principal and interest payments is reasonably assured. Loan losses are charged against the allowance for loan losses when we believe the uncollectibility of a loan balance is certain. Subsequent recoveries, if any, are credited to the allowance for loan losses. We do not include reserves for interest receivable in the measurement of the allowance for credit losses, as we generally classify loans as nonperforming at 90 days past due and reverse interest income for these loans at that time. Large groups of smaller balance homogenous loans are collectively evaluated for impairment. Accordingly, we do not separately identify individual consumer and residential loans for impairment measurements. Impairment is measured on a loan-by-loan basis for non-homogeneous loans, and a specific allowance is established for individual loans determined to be impaired. Impairment is measured by comparing the carrying value of the impaired loan to the present value of its expected cash flow discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. See Note 8 for more information. Investments Our broker-dealer subsidiaries report changes in fair value of marketable and non-marketable securities in other income in the consolidated statements of operations. The fair value of marketable investments is generally based on either quoted market or dealer prices. The fair value of non-marketable securities is based on management’s estimate using the best information available, which generally consists of quoted market prices for similar securities and internally developed discounted cash flow models. Investments in the consolidated statements of financial condition contain investments in securities that are marketable and securities that are not readily marketable. These investments are not included in our broker-dealer trading inventory or available-for-sale or held-to-maturity portfolios and represent the acquiring and disposing of debt or equity instruments for our benefit. Fixed Assets, Net Office equipment is depreciated on a straight-line basis over the estimated useful life of the asset of two to seven years. Leasehold improvements are amortized on a straight-line basis over the lesser of the estimated useful life of the asset or the term of the lease. Buildings and building improvements are amortized on a straight-line basis over the estimated useful life of the asset of three to thirty-nine years. Depreciation expense is recorded in occupancy and equipment rental in the consolidated statements of operations. Office equipment and leasehold improvements are stated at cost net of accumulated depreciation and amortization in the consolidated statements of financial condition. Fixed assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Aircraft Engines Held for Operating Lease Aircraft engines held for operating lease are stated at cost, less accumulated depreciation and are included in fixed assets, net in the consolidated statements of financial condition. Certain costs incurred in connection with the acquisition of aircraft engines are capitalized as part of the cost of such assets. Major overhauls paid for by our company, which improve functionality or extend the original useful life, are capitalized and depreciated over the shorter of the estimated period to the next overhaul (“deferral method”) or the remaining useful life of the equipment. We do not accrue for planned major maintenance. The cost of overhauls of aircraft engines under long-term leases, for which the lessee is responsible for maintenance during the period of the lease, are paid for by the lessee or from reimbursable maintenance reserves paid to our company in accordance with the lease, and are not capitalized. We depreciate aircraft engines on a straight-line basis over a 30-year period from the acquisition date to a 15% residual value. We review the useful life and residual values of all engines periodically as demand changes to accurately depreciate the cost of equipment over the useful life of the engines. Goodwill and Intangible Assets Goodwill represents the cost of acquired businesses in excess of the fair value of the related net assets acquired. We test goodwill for impairment on an annual basis and on an interim basis when certain events or circumstances exist. We test for impairment at the reporting unit level, which is generally at the level of or one level below our company’s business segments. For both the annual and interim tests, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, we determine it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then performing the two-step impairment test is not required. However, if we conclude otherwise, we are then required to perform the first step of the two-step impairment test. Goodwill impairment is determined by comparing the estimated fair value of a reporting unit with its respective carrying value. If the estimated fair value exceeds the carrying value, goodwill at the reporting unit level is not deemed to be impaired. If the estimated fair value is below carrying value, however, further analysis is required to determine the amount of the impairment. Additionally, if the carrying value of a reporting unit is zero or a negative value and it is determined that it is more likely than not the goodwill is impaired, further analysis is required. The estimated fair values of the reporting units are derived based on valuation techniques we believe market participants would use for each of the reporting units. The Company performed impairment testing on October 1, 2020 with no impairment charges resulting from the annual impairment tests. Identifiable intangible assets, which are amortized over their estimated useful lives, are tested for potential impairment whenever events or changes in circumstances suggest that the carrying value of an asset or asset group may not be fully recoverable. Loans and Advances to Financial Advisors and Other Employees, Net We offer transition pay, principally in the form of upfront loans, to financial advisors and certain key revenue producers as part of our company’s overall growth strategy. These loans are generally forgiven by a charge to compensation and benefits over a five- to ten-year period if the individual satisfies certain conditions, usually based on continued employment and certain performance standards. We monitor and compare individual financial advisor production to each loan issued to ensure future recoverability. In the event that the financial advisor is no longer affiliated with us, any unpaid balance of such loan becomes immediately due and payable to us. In determining the allowance for doubtful accounts related to former employees, management primarily considers our historical collection experience as well as other factors, including amounts due at termination, the reasons for the terminated relationship, and the former financial advisor’s overall financial position. When the review of these factors indicates that further collection activity is highly unlikely, the outstanding balance of such loan is written-off and the corresponding allowance is reduced. The aging of this receivable balance is not a determinative factor in computing our allowance for doubtful accounts, as concerns regarding the recoverability of these loans primarily arise in the event that the financial advisor is no longer affiliated with us. We present the outstanding balance of loans to financial advisors on our consolidated statements of financial condition, net of the allowance for doubtful accounts. Our allowance for doubtful accounts was approximately $18.7 million and $14.3 million at December 31, 2020 and 2019, respectively. Derivative Instruments and Hedging Activities We recognize all of our derivative instruments at fair value as either assets or liabilities in the consolidated statements of financial condition. These instruments are recorded in other assets or accounts payable and accrued expenses in the consolidated statements of financial condition and in the operating section of the consolidated statements of cash flows as increases or decreases of other assets and accounts payable and accrued expenses. Our company’s policy is not to offset fair value amounts recognized for derivative instruments and fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral arising from derivative instruments recognized at fair value executed with the same counterparty under master netting arrangements. The accounting for changes in the fair value (i.e., gains and losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, we must also designate the hedging instrument or transaction, based upon the exposure being hedged. For derivative instruments that are designated and qualify as cash flow hedges (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of accumulated other comprehensive income/(loss), net of tax, and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any, is recognized in current earnings during the period of change. Revenue Recognition Customer securities transactions are recorded on a settlement date basis, with related commission revenues and expenses recorded on a trade date basis. Commission

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Acquisitions	NOTE 3 – Acquisitions GMP Capital Inc. On December 6, 2019, the Company completed the acquisition of substantially all of the capital markets business of GMP Capital Inc. (“GMP”), an independent investment banking franchise based in Canada that offers investment banking services, including equity capital-raising, mergers and acquisitions, institutional sales and trading, and research services to corporate clients and institutional investors. The acquisition was funded with cash from operations. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 (“ASC Topic 805”), “Business Combinations.” Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. We recorded $20.0 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. Identifiable intangible assets purchased by our company consisted of customer relationships, non-compete agreements, and tradename with an acquisition-date fair value of $10.7 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the GMP business and its expertise in the investment banking business. Goodwill is expected to be deductible for federal income tax purposes. Pro forma information is not presented because the acquisition is not considered to be material, as defined by the SEC. The results of operations of GMP have been included in our results prospectively from the date of acquisition. MainFirst On November 1, 2019, the Company completed the acquisition of MainFirst Bank AG (“MainFirst”), an investment bank that offers equity brokerage and equity capital markets services to institutions and corporations in key European markets. The acquisition was funded with cash from operations. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 (“ASC Topic 805”), “Business Combinations.” Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. We recorded $15.7 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. Identifiable intangible assets purchased by our company consisted of tradename, non-compete agreements, and customer relationships with an acquisition-date fair value of $0.8 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the MainFirst business. Goodwill will not be deductible for federal income tax purposes. Pro forma information is not presented because the acquisition is not considered to be material, as defined by the SEC. The results of operations of MainFirst have been included in our results prospectively from the date of acquisition. George K. Baum & Company On September 27, 2019, the Company completed the acquisition of certain assets of George K. Baum & Company (“GKB”), a privately held investment banking firm focused on public finance and taxable fixed income sales and trading. The acquisition was funded with cash from operations. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 (“ASC Topic 805”), “Business Combinations.” Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. We recorded $33.3 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. Identifiable intangible assets purchased by our company consisted of non-compete agreements and customer relationships with an acquisition-date fair value of $15.2 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the GKB business and its expertise in the investment banking business. Goodwill is expected to be deductible for federal income tax purposes. Pro forma information is not presented because the acquisition is not considered to be material, as defined by the SEC. The results of operations of GKB have been included in our results prospectively from the date of acquisition. B&F Capital Markets, Inc. On September 3, 2019, the Company completed the acquisition of B&F Capital Markets, Inc. (“B&F”), a privately held firm focused on providing regional and community banks throughout the United States with interest rate derivative programs through a combination of experienced professionals and proprietary software. The acquisition was funded with cash from operations. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 (“ASC Topic 805”), “Business Combinations.” Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. We recorded $23.0 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. Identifiable intangible assets purchased by our company consisted of tradename, non-compete agreements, and customer relationships with an acquisition-date fair value of $18.6 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the B&F business and its expertise in the interest rate derivate business. Goodwill is expected to be deductible for federal income tax purposes. We recognized a liability for estimated earn-out payments. These payments will be based on the performance of B&F over a five-year Pro forma information is not presented because the acquisition is not considered to be material, as defined by the SEC. The results of operations of B&F have been included in our results prospectively from the date of acquisition. Mooreland Partners On July 1, 2019, the Company completed the acquisition of Mooreland Partners (“Mooreland”), an independent M&A and private capital advisory firm serving the global technology industry. The acquisition was funded with cash from operations. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 (“ASC Topic 805”), “Business Combinations.” Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. We recorded $45.8 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. Identifiable intangible assets purchased by our company consisted of non-compete agreements and backlog with an acquisition-date fair value of $5.1 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the Mooreland business and its expertise in the investment banking business. Goodwill is expected to be deductible for federal income tax purposes. We recognized a liability for estimated earn-out payments. These payments will be based on the performance of Mooreland over a three-year Pro forma information is not presented because the acquisition is not considered to be material, as defined by the SEC. The results of operations of Mooreland have been included in our results prospectively from the date of acquisition. First Empire On January 2, 2019, the Company completed the acquisition of First Empire Holding Corp. (“First Empire”) and its subsidiaries, including First Empire Securities, Inc., an institutional broker-dealer specializing in the fixed income markets. The acquisition was funded with cash from operations. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 (“ASC Topic 805”), “Business Combinations.” Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. We recorded $14.9 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. Identifiable intangible assets purchased by our company consisted of tradename and customer relationships with an acquisition-date fair value of $7.8 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the First Empire business and its expertise in the investment banking business. Goodwill is expected to be deductible for federal income tax purposes. Pro forma information is not presented because the acquisition is not considered to be material, as defined by the SEC. The results of operations of First Empire have been included in our results prospectively from the date of acquisition.

Receivables From And Payables T

Receivables From And Payables To Brokers, Dealers And Clearing Organizations	12 Months Ended
	Dec. 31, 2020
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Receivables From And Payables To Brokers, Dealers And Clearing Organizations	NOTE 4 – Receivables From and Payables to Brokers, Dealers, and Clearing Organizations Amounts receivable from brokers, dealers, and clearing organizations at December 31, 2020 and 2019, included (in thousands) December 31, 2020 2019 Deposits paid for securities borrowed $ 313,131 $ 135,373 Receivables from clearing organizations 229,070 471,122 Securities failed to deliver 7,291 21,295 $ 549,492 $ 627,790 Amounts payable to brokers, dealers, and clearing organizations at December 31, 2020 and 2019, included (in thousands) December 31, 2020 2019 Deposits received from securities loaned $ 145,124 $ 608,333 Payable to clearing organizations 25,540 78,702 Securities failed to receive 7,273 25,256 $ 177,937 $ 712,291 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	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 5 – 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 U.S. government securities, corporate fixed income securities, and equity securities listed in active markets. 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, corporate fixed income and equity securities infrequently traded, state and municipal securities, and other securities, which primarily consist of sovereign debt and asset-backed securities. We have identified Level 3 financial instruments to include certain asset-backed securities and loans with unobservable pricing inputs, included in other in the table below. 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”), private company investments, including our beneficial interest in North Shore, and investments in funds, including certain money market funds that are measured at net asset value (“NAV”). 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. The value of our beneficial interest in North Shore is based on a proprietary cash flow model. Private company investments are primarily reported as Level 3 assets. 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 money market funds, mutual funds, partnership interests, and private equity 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 (in thousands): December 31, 2020 December 31, 2019 Fair value of investments Unfunded commitments Fair value of investments Unfunded commitments Money market funds $ 34,192 $ — $ 25,734 $ — Mutual funds 7,152 — 7,875 — Partnership interests 3,744 2,520 3,058 953 Private equity funds 1,489 1,203 2,288 1,203 Total $ 46,577 $ 3,723 $ 38,955 $ 2,156 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 securities, 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, corporate fixed income securities infrequently traded, and other securities, which primarily consist of sovereign debt, U.S. government agency securities, loans, and state and municipal securities. Derivatives Derivatives are valued using quoted market prices for identical instruments when available or pricing models based on the net present value of estimated future cash flows. The valuation models used require market observable inputs, including contractual terms, market prices, yield curves, credit curves, and measures of volatility. We manage credit risk for our derivative positions on a counterparty-by-counterparty basis and calculate credit valuation adjustments, included in the fair value of these instruments, on the basis of our relationships at the counterparty portfolio/master netting agreement level. These credit valuation adjustments are determined by applying a credit spread for the counterparty to the total expected exposure of the derivative after considering collateral and other master netting arrangements. We have classified our interest rate swaps as Level 2. 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) Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities. 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) Includes sovereign debt and state and municipal securities. Assets and liabilities measured at fair value on a recurring basis as of December 31, 2019, are presented below (in thousands) December 31, 2019 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 9,266 $ 9,266 $ — $ — U.S. government agency securities 66,881 — 66,881 — Agency mortgage-backed securities 388,856 — 388,856 — Corporate securities: Fixed income securities 250,783 872 249,911 — Equity securities 64,009 61,579 2,430 — State and municipal securities 137,211 — 137,211 — Other (1) 55,926 — 46,600 9,326 Total financial instruments owned 972,932 71,717 891,889 9,326 Available-for-sale securities: U.S. government agency securities 5,067 — 5,067 — State and municipal securities 24,297 — 24,297 — Mortgage-backed securities: Agency 837,878 — 837,878 — Commercial 109,537 — 109,537 — Non-agency 9,758 — 9,758 — Corporate fixed income securities 675,311 — 675,311 — Asset-backed securities 1,592,889 — 1,592,889 — Total available-for-sale securities 3,254,737 — 3,254,737 — Investments: Corporate equity securities 35,083 34,023 — 1,060 Auction rate securities 14,897 — 470 14,427 Other 16,771 9,905 6,013 853 Investments in funds and partnerships measured at NAV 13,221 Total investments 79,972 43,928 6,483 16,340 Cash equivalents measured at NAV 25,734 Derivative contracts (2) 1,086 — 1,086 — $ 4,334,461 $ 115,645 $ 4,154,195 $ 25,666 (1) Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities. (2) Included in other assets in the consolidated statements of financial condition. December 31, 2019 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 243,570 $ 243,570 $ — $ — Agency mortgage-backed securities 231,909 — 231,909 — Corporate securities: Fixed income securities 140,100 633 139,467 — Equity securities 32,047 32,047 — — Other (2) 15,226 — 14,271 955 Total financial instruments sold, but not yet purchased $ 662,852 $ 276,250 $ 385,647 $ 955 (2) Includes sovereign debt, U.S. government agency securities, and loans. The following table summarizes the changes in fair value associated with Level 3 financial instruments during the year ended December 31, 2020 (in thousands) Year Ended December 31, 2020 Financial instruments owned Investments Other Corporate Equity Securities Auction Rate Securities Other Balance at December 31, 2019 $ 9,326 $ 1,060 $ 14,427 $ 853 Unrealized losses (3,126 ) — (1,494 ) (296 ) Realized losses (1) (71 ) — — — Purchases 25,852 — — — Sales (20,000 ) — — (20 ) Redemptions (697 ) — — — Transfers: Into Level 3 — — — 41,576 Out of Level 3 — (1,060 ) — — Net change 1,958 (1,060 ) (1,494 ) 41,260 Balance at December 31, 2020 $ 11,284 $ — $ 12,933 $ 42,113 (1) Realized and unrealized losses related to financial instruments owned and investments are reported in other income in the consolidated statements of operations. The following table summarizes the changes in fair value associated with Level 3 financial instruments during the year ended December 31, 2019 (in thousands) Year Ended December 31, 2019 Financial instruments owned Investments Other Corporate Equity Securities Auction Rate Securities Other Balance at December 31, 2018 $ 176 $ — $ 17,336 $ 857 Unrealized gains 2 — 261 — Realized gains/(losses) (1) 451 — — — Purchases 24,316 — — — Sales (16,081 ) — — — Redemptions (3 ) — (2,700 ) (4 ) Transfers: Into Level 3 465 1,060 — — Out of Level 3 — — (470 ) — Net change 9,150 1,060 (2,909 ) (4 ) Balance at December 31, 2019 $ 9,326 $ 1,060 $ 14,427 $ 853 (1) Realized and unrealized gains/(losses) related to financial instruments owned and investments are reported in other income in the consolidated statements of operations. 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 years ended December 31, 2020 and 2019, relating to Level 3 assets still held at December 31, 2020, 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 December 31, 2020 and 2019, whether or not recognized in the consolidated statements of financial condition at fair value (in thousands) December 31, 2020 December 31, 2019 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Cash and cash equivalents $ 2,279,274 $ 2,279,274 $ 1,142,596 $ 1,142,596 Cash segregated for regulatory purposes 172,932 172,932 131,374 131,374 Securities purchased under agreements to resell 217,930 217,930 385,008 385,008 Financial instruments owned 694,028 694,028 972,932 972,932 Available-for-sale securities 2,230,297 2,230,297 3,254,737 3,254,737 Held-to-maturity securities 4,117,384 4,107,960 2,856,219 2,827,883 Bank loans 11,006,760 11,088,058 9,624,042 9,801,986 Loans held for sale 551,248 551,248 389,693 389,693 Investments 113,862 113,862 79,972 79,972 Derivative contracts (1) — — 1,086 1,086 Financial liabilities: Securities sold under agreements to repurchase $ 190,955 $ 190,955 $ 391,634 $ 391,634 Bank deposits 17,396,497 17,192,722 15,332,581 14,467,894 Financial instruments sold, but not yet purchased 437,978 437,978 662,852 662,852 Federal Home Loan Bank advances — — 250,000 250,000 Senior notes 1,112,409 1,265,669 1,017,010 1,069,425 Debentures to Stifel Financial Capital Trusts 60,000 41,071 60,000 45,847 (1) The following tables present the estimated fair values of financial instruments not measured at fair value on a recurring basis for the periods indicated (in thousands) 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 December 31, 2019 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 1,116,862 $ 1,116,862 $ — $ — Cash segregated for regulatory purposes 131,374 131,374 — — Securities purchased under agreements to resell 385,008 342,132 42,876 — Held-to-maturity securities 2,827,883 — 2,666,773 161,110 Bank loans 9,801,986 — 9,801,986 — Loans held for sale 389,693 — 389,693 — Financial liabilities: Securities sold under agreements to repurchase $ 391,634 $ 22,205 $ 369,429 $ — Bank deposits 14,467,894 — 14,467,894 — Federal Home Loan Bank advances 250,000 250,000 — — Senior notes 1,069,425 1,069,425 — — Debentures to Stifel Financial Capital Trusts 45,847 — — 45,847 The following, as supplemented by the discussion above, describes the valuation techniques used in estimating the fair value of our financial instruments as of December 31, 2020 and 2019. 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 December 31, 2020 and 2019 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 asset-backed securities, consisting of collateralized loan obligation securities and student loan ARS. 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. 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. 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. 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 December 31, 2020 and 2019 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	12 Months Ended
	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased	NOTE 6 – 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 December 31, 2020 and 2019, are as follows (in thousands) December 31, 2020 2019 Financial instruments owned: U.S. government securities $ 46,900 $ 9,266 U.S. government agency securities 56,450 66,881 Agency mortgage-backed securities 216,434 388,856 Corporate securities: Fixed income securities 194,575 250,783 Equity securities 67,593 64,009 State and municipal securities 96,150 137,211 Other (1) 15,926 55,926 $ 694,028 $ 972,932 Financial instruments sold, but not yet purchased: U.S. government securities $ 91,974 $ 243,570 Agency mortgage-backed securities 141,227 231,909 Corporate securities: Fixed income securities 162,626 140,100 Equity securities 30,848 32,047 Other (2) 11,303 15,226 $ 437,978 $ 662,852 (1) Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities. (2) Includes sovereign debt, U.S. government agency securities, loans, and state and municipal securities. At December 31, 2020 and 2019, financial instruments owned in the amount of $194.0 million and $511.2 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	12 Months Ended
	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Available-For-Sale And Held-To-Maturity Securities	NOTE 7 – 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 December 31, 2020 and 2019 (in thousands) December 31, 2020 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) 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 December 31, 2019 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Fair Value Available-for-sale securities U.S. government agency securities $ 5,028 $ 39 $ — $ 5,067 State and municipal securities 24,198 99 — 24,297 Mortgage-backed securities: Agency 840,659 3,070 (5,851 ) 837,878 Commercial 109,982 269 (714 ) 109,537 Non-agency 9,731 50 (23 ) 9,758 Corporate fixed income securities 664,028 11,283 — 675,311 Asset-backed securities 1,600,415 679 (8,205 ) 1,592,889 $ 3,254,041 $ 15,489 $ (14,793 ) $ 3,254,737 Held-to-maturity securities (2) Asset-backed securities 2,856,219 5,960 (34,296 ) 2,827,883 (1) Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive income/(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. Effective January 1, 2020, we adopted the new accounting standard for credit losses that requires evaluation of available-for-sale and held-to-maturity debt securities for any expected losses with recognition of an allowance for credit losses, when applicable. For more information, see Note 2 – Summary of Significant Accounting Policies Accrued interest receivable for our investment portfolio at December 31, 2020, was $26.0 million 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. For the year ended December 31, 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. For the year ended December 31, 2019, we received proceeds of $641.8 million from the sale of available-for-sale securities, which resulted in a realized loss of $0.3 million. For the year ended December 31, 2018, we received proceeds of $372.4 million from the sale of available-for-sale securities, which resulted in a realized loss of $3.9 million. During the year ended December 31, 2020, the Company transferred $ 1.0 billion 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. There were no gains or losses recognized as a result of these transfers. During the year ended December 31, 2019, the Company transferred certain asset-backed securities from the held-to-maturity category to available-for sale. At the date of transfer, the securities reclassified had a fair value of $1.1 billion and resulted in a net of tax increase to other comprehensive income of $17.9 million. During the years ended December 31, 2020 and 2019, unrealized gains, net of deferred taxes, of $33.1 million and $42.4 million, respectively, were recorded in accumulated other comprehensive income/(loss) in the consolidated statements of financial condition. During the year ended December 31, 2018, unrealized losses, net of deferred taxes, of $36.3 million were recorded in accumulated other comprehensive income/(loss) in the consolidated statements of financial condition. The table below summarizes the amortized cost and fair values of our securities by contractual maturity (in thousands) December 31, 2020 December 31, 2019 Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale securities Within one year $ 143,462 $ 144,362 $ 6,861 $ 6,871 After one year through three years 134,040 137,625 229,184 229,760 After three years through five years 247,907 266,139 422,236 429,909 After five years through ten years 429,921 435,111 409,664 411,680 After ten years 1,229,009 1,247,060 2,186,096 2,176,517 $ 2,184,339 $ 2,230,297 $ 3,254,041 $ 3,254,737 Held-to-maturity securities After three years through five years 17,460 17,460 — — After five years through ten years 1,932,439 1,926,425 598,250 597,166 After ten years 2,167,485 2,164,075 2,257,969 2,230,717 $ 4,117,384 $ 4,107,960 $ 2,856,219 $ 2,827,883 The maturities of our available-for-sale (fair value) and held-to-maturity (amortized cost) securities at December 31, 2020, 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 $ 2,518 $ 1,843 $ — $ — $ 4,361 State and municipal securities — — 2,453 — 2,453 Mortgage-backed securities: Agency 3 355 86,324 706,728 793,410 Commercial 16,602 16 — 78,995 95,613 Non-agency 3,841 — — 728 4,569 Corporate fixed income securities 121,398 401,550 108,810 — 631,758 Asset-backed securities — — 237,524 460,609 698,133 $ 144,362 $ 403,764 $ 435,111 $ 1,247,060 $ 2,230,297 Held-to-maturity securities Asset-backed securities $ — $ 17,460 $ 1,932,439 $ 2,167,485 $ 4,117,384 (1) Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis. At December 31, 2020 and 2019, securities of $368.4 million and $801.5 million, respectively, were pledged at the Federal Home Loan Bank as collateral for borrowings and letters of credit obtained to secure public deposits. At December 31, 2020 and 2019, securities of $1.4 billion and $816.1 million, 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 December 31, 2020 (in thousands) Less than 12 months 12 months or more Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Available-for-sale securities Mortgage-backed securities: Agency $ (16 ) $ 10,254 $ — $ — $ (16 ) $ 10,254 Non-agency — — (9 ) 728 (9 ) 728 Asset-backed securities (2,132 ) 155,011 (3,434 ) 358,154 (5,566 ) 513,165 $ (2,148 ) $ 165,265 $ (3,443 ) $ 358,882 $ (5,591 ) $ 524,147 At December 31, 2020, the amortized cost of 40 securities classified as available for sale exceeded their fair value by $5.6 million, of which $3.4 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 December 31, 2020, was $524.1 million, which was 23.5% of our available-for-sale portfolio. Credit Quality Indicators The Company uses Moody credit ratings as the 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 December 31, 2020 (in thousands) AAA AA A C Total Held-to-maturity securities Asset-backed securities $ 1,141,171 $ 2,958,169 $ 15,500 $ 2,544 $ 4,117,384

Bank Loans

Bank Loans	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Bank Loans	NOTE 8 – Bank Loans The following table presents the balance and associated percentage of each major loan category in our bank loan portfolio at December 31, 2020 and 2019 (in thousands, except percentages) December 31, 2020 December 31, 2019 Balance Percent Balance Percent Commercial and industrial $ 4,296,089 38.5 % $ 3,438,953 35.3 % Residential real estate 3,956,670 35.4 3,309,548 33.9 Securities-based loans 1,933,974 17.3 2,098,211 21.5 Construction and land 501,681 4.5 398,839 4.1 Commercial real estate 366,485 3.3 428,549 4.4 Home equity lines of credit 75,507 0.7 51,205 0.5 Other 40,407 0.3 27,311 0.3 Gross bank loans 11,170,813 100.0 % 9,752,616 100.0 % Unamortized loan discount, net (1,822 ) (6,588 ) Loans in process (48,222 ) (27,717 ) Unamortized loan fees, net (1,980 ) 1,310 Allowance for loan losses (112,029 ) (95,579 ) Loans held for investment, net $ 11,006,760 $ 9,624,042 At December 31, 2020 and 2019, Stifel Bancorp had loans outstanding to its executive officers and directors and executive officers and directors of certain affiliated entities in the amount of $23.6 $24.5 At December 31, 2020 and 2019, we had loans held for sale of $551.2 million and $389.7 million, respectively. For the years ended December 31, 2020, 2019, and 2018, we recognized gains, included in other income in the consolidated statements of operations, of $41.2 million, $13.1 million, and $8.2 million, respectively, from the sale of originated loans, net of fees and costs. At December 31, 2020 and 2019, loans, primarily consisting of residential and commercial real estate loans of $3.8 Accrued interest receivable for loans and loans held for sale at December 31, 2020, was $20.8 million and is reported in other assets on the consolidated statement of financial condition. The following table details activity in the allowance for loan losses by portfolio segment for the years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 Beginning Balance CECL Adoption Provision Charge- offs Recoveries Ending Balance Commercial and industrial $ 69,949 $ (19,940 ) $ 17,341 $ (153 ) $ 25 $ 67,222 Construction and land 4,613 2,674 9,988 — — 17,275 Residential real estate 14,253 3,499 (1,452 ) — — 16,300 Commercial real estate 3,564 791 4,225 — — 8,580 Securities-based loans 2,361 1,346 (1,692 ) — — 2,015 Home equity lines of credit 442 39 (195 ) — 88 374 Other 397 (145 ) 49 (40 ) 2 263 $ 95,579 $ (11,736 ) $ 28,264 $ (193 ) $ 115 $ 112,029 Year Ended December 31, 2019 Beginning Balance Provision Charge- offs Recoveries Ending Balance Commercial and industrial $ 68,367 $ 1,821 $ (239 ) $ — $ 69,949 Residential real estate 11,228 2,974 (41 ) 92 14,253 Construction and land 1,241 3,372 — — 4,613 Commercial real estate 1,778 1,786 — — 3,564 Securities-based loans 1,978 383 — — 2,361 Home equity lines of credit 310 129 — 3 442 Other 931 (488 ) (106 ) 60 397 $ 85,833 $ 9,977 $ (386 ) $ 155 $ 95,579 On January 1, 2020, we adopted the new accounting standard that requires the measurement of the allowance for credit losses to be based on management’s best estimate of lifetime expected credit losses inherent in our company’s relevant financial assets. Upon adoption of the new accounting standard, we recorded a $10.4 million increase in the allowance for credit losses on January 1, 2020, which was comprised of a net increase to the allowance for loan losses and an adjustment to the reserve for unfunded lending commitments. During the year ended December 31, 2020, we recorded $28.3 million of net credit loss reserves reflecting the impact of change in our company’s outlook on estimated lifetime expected credit losses under the CECL standard due to the COVID-19 pandemic. For more information on our company’s credit loss accounting policies, including the allowance for credit losses, see Note 2 - Summary of Significant Accounting Policies. The following table presents the recorded balances of loans and amount of allowance allocated based upon impairment method by portfolio segment at December 31, 2020 (in thousands) Allowance for Loan Losses Recorded Investment in Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Commercial and industrial $ 8,158 $ 59,064 $ 67,222 $ 12,251 $ 4,283,838 $ 4,296,089 Residential real estate 24 16,276 16,300 1,407 3,955,263 3,956,670 Securities-based loans — 2,015 2,015 — 1,933,974 1,933,974 Construction and land — 17,275 17,275 — 501,681 501,681 Commercial real estate — 8,580 8,580 144 366,341 366,485 Home equity lines of credit — 374 374 — 75,507 75,507 Other — 263 263 — 40,407 40,407 $ 8,182 $ 103,847 $ 112,029 $ 13,802 $ 11,157,011 $ 11,170,813 The following table presents the recorded balances of loans and amount of allowance allocated based upon impairment method by portfolio segment at December 31, 2019 (in thousands) Allowance for Loan Losses Recorded Investment in Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Commercial and industrial $ 8,158 $ 61,791 $ 69,949 $ 12,991 $ 3,425,962 $ 3,438,953 Residential real estate 24 14,229 14,253 1,412 3,308,136 3,309,548 Securities-based loans — 2,361 2,361 — 2,098,211 2,098,211 Commercial real estate — 3,564 3,564 — 428,549 428,549 Construction and land — 4,613 4,613 — 398,839 398,839 Home equity lines of credit — 442 442 184 51,021 51,205 Other — 397 397 — 27,311 27,311 $ 8,182 $ 87,397 $ 95,579 $ 14,587 $ 9,738,029 $ 9,752,616 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. At December 31, 2019, we had $14.6 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, 2019, 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 year ended December 31, 2020 and 2019, were insignificant to the consolidated financial statements. In March 2020, the President signed into law the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), which among other things, provided optional, temporary relief from accounting for certain loan modifications as troubled debt restructurings (TDRs). Under the CARES Act, TDR relief is available to banks for loan modifications related to the adverse effects of the coronavirus (COVID-19) pandemic granted to borrowers that were current as of December 31, 2019. TDR relief applies to COVID-related modifications made from March 1, 2020 through December 31, 2020. 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. We elected to apply the TDR relief provided by the CARES Act in the second quarter of 2020. The tables below present loans that were individually evaluated for impairment by portfolio segment at December 31, 2020 and 2019, including the average recorded investment balance (in thousands) December 31, 2020 Unpaid Contractual Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial and industrial $ 12,251 $ 14 $ 12,237 $ 12,251 $ 8,158 $ 12,954 Residential real estate 1,407 1,249 158 1,407 24 1,410 Commercial real estate 144 144 — 144 — 145 Other 150 — — — — — Total $ 13,952 $ 1,407 $ 12,395 $ 13,802 $ 8,182 $ 14,509 December 31, 2019 Unpaid Contractual Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial and industrial $ 12,991 $ 51 $ 12,940 $ 12,991 $ 8,158 $ 14,172 Residential real estate 1,412 1,412 — 1,412 24 1,231 Home equity lines of credit 184 184 — 184 — 184 Other 150 — — — — — Total $ 14,737 $ 1,647 $ 12,940 $ 14,587 $ 8,182 $ 15,587 The following tables present the aging of the recorded investment in past due loans at December 31, 2020 and 2019, by portfolio segment (in thousands) 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 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. December 31, 2019 30 - 89 Days Past Due 90 or More Days Past Due Total Past Due Current Balance Total Commercial and industrial $ — $ 12,940 $ 12,940 $ 3,426,013 3,438,953 Residential real estate 10,476 1,249 11,725 3,297,823 3,309,548 Securities-based loans — — — 2,098,211 2,098,211 Commercial real estate — — — 428,549 428,549 Construction and land — — — 398,839 398,839 Home equity lines of credit 83 184 267 50,938 51,205 Other 5 — 5 27,306 27,311 Total $ 10,564 $ 14,373 $ 24,937 $ 9,727,679 $ 9,752,616 December 31, 2019 * Non-accrual Restructured Total Commercial and industrial $ 12,940 $ — $ 12,940 Residential real estate 1,249 163 1,412 Home equity lines of credit 184 — 184 Total $ 14,373 $ 163 $ 14,536 * There were no loans past due 90 days and still accruing interest at December 31, 2019. Credit quality indicators As of December 31, 2020, 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/or 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 portfolios. 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 December 31, 2020 and 2019, 98.8% and 98.3% 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. Our 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 we 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. Portfolio 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 includes consumer and credit card lending. Based on the most recent analysis performed, the risk category of our loan portfolio was as follows: (in thousands) December 31, 2020 Pass Special Mention 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 December 31, 2019 Pass Special Mention Substandard Doubtful Total Commercial and industrial $ 3,365,800 $ 48,241 $ 11,972 $ 12,940 $ 3,438,953 Residential real estate 3,307,719 417 1,412 — 3,309,548 Securities-based loans 2,098,211 — — — 2,098,211 Commercial real estate 427,963 586 — — 428,549 Construction and land 398,839 — — — 398,839 Home equity lines of credit 51,021 — 184 — 51,205 Other 27,311 — — — 27,311 Total $ 9,676,864 $ 49,244 $ 13,568 $ 12,940 $ 9,752,616 Term Loans Amortized Cost Basis by Origination Year – December 31, 2020 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Commercial and industrial: Pass $ 828,098 $ 519,723 $ 743,440 $ 332,986 $ 204,369 $ 297,288 $ 1,069,447 $ 3,995,351 Special Mention 500 239 35,602 57,708 — 4,200 7,510 105,759 Substandard 19,395 34,772 65,801 48,647 7,777 — 6,336 182,728 Doubtful — — — 12,237 — 14 — 12,251 $ 847,993 $ 554,734 $ 844,843 $ 451,578 $ 212,146 $ 301,502 $ 1,083,293 $ 4,296,089 Residential real estate: Pass $ 1,600,107 $ 896,190 $ 375,252 $ 302,524 $ 272,101 $ 509,247 $ — $ 3,955,421 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — 149 — 1,100 — 1,249 $ 1,600,107 $ 896,190 $ 375,252 $ 302,673 $ 272,101 $ 510,347 $ — $ 3,956,670 Securities-based loans: Pass $ 25,563 $ 104,011 $ 294 $ 140 $ 300 $ 16,716 $ 1,786,950 $ 1,933,974 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ 25,563 $ 104,011 $ 294 $ 140 $ 300 $ 16,716 $ 1,786,950 $ 1,933,974 Construction and land: Pass $ 68,392 $ 206,085 $ 119,416 $ 61,289 $ 6,450 $ 1,355 $ 4,454 $ 467,441 Special Mention — — 14,240 — — — — 14,240 Substandard — — 20,000 — — — — 20,000 Doubtful — — — — — — — — $ 68,392 $ 206,085 $ 153,656 $ 61,289 $ 6,450 $ 1,355 $ 4,454 $ 501,681 Commercial real estate: Pass $ 77,792 $ 151,805 $ 38,744 $ 45,275 $ 4,007 $ 37,903 $ 482 $ 356,008 Special Mention — — — — 10,333 — — 10,333 Substandard — — — — — — — — Doubtful — — 144 — — — — 144 $ 77,792 $ 151,805 $ 38,888 $ 45,275 $ 14,340 $ 37,903 $ 482 $ 366,485 Home equity lines of credit: Pass $ — $ — $ — $ — $ — $ — $ 75,507 $ 75,507 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ — $ — $ — $ — $ — $ 75,507 $ 75,507 Other: Pass $ — $ — $ 5 $ — $ 503 $ 197 $ 39,702 $ 40,407 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ — $ 5 $ — $ 503 $ 197 $ 39,702 $ 40,407

Fixed Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Fixed Assets	NOTE 9 – Fixed Assets The following is a summary of fixed assets as of December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 Office equipment $ 323,841 $ 288,975 Leasehold improvements 105,187 120,570 Building 62,803 58,804 Aircraft engine operating leases — 206,315 491,831 674,664 Accumulated depreciation and amortization (323,916 ) (292,499 ) $ 167,915 $ 382,165 For the years ended December 31, 2020, 2019, and 2018, depreciation and amortization totaled $40.9 million, $38.4 million, and $27.9 million, respectively. As of December 31, 2019, the Company had a total lease portfolio of 14 aircraft engines with a net book value of $200.4 million. Lease income, included in other income in the consolidated statements of operations, was $20.9 million for year ended December 31, 2019. During the year ended December 31, 2020, Stifel Bancorp’s equity in North Shore was redeemed. As a result, we deconsolidated the related assets, liabilities, and non-controlling interests of North Shore. For more information, see Note 1 – Nature of Operations and Basis of Presentation

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 10 – 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, 2019 Net Adjustments Sale of ZCM December 31, 2020 Goodwill Global Wealth Management $ 344,981 $ — $ (9,972 ) $ 335,009 Institutional Group 849,093 (2,104 ) — 846,989 $ 1,194,074 $ (2,104 ) $ (9,972 ) $ 1,181,998 December 31, 2019 Adjustments/ Sale of ZCM Amortization December 31, 2020 Intangible assets Global Wealth Management $ 53,279 $ (1,532 ) $ (7,076 ) $ 44,671 Institutional Group 108,494 363 (12,544 ) 96,313 $ 161,773 $ (1,169 ) $ (19,620 ) $ 140,984 The adjustments to goodwill and intangible assets during the year ended December 31, 2020, are primarily attributable to the sale of ZCM, and the acquisitions of Mooreland Partners on July 1, 2019, B&F Capital Markets on September 3, 2019, MainFirst Bank on November 1, 2019, and GMP Capital, Inc. on December 6, 2019. See Note 3 in the notes to our consolidated financial statements for additional information regarding our acquisitions. On March 27, 2020, the Company completed the sale of ZCM, a wholly owned asset management subsidiary. The Company recorded a gain on the sale, which included a write-off of allocated goodwill and the remaining net book value of intangible assets. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of each respective business, its employees, and customer base. Amortizable intangible assets consist of acquired customer relationships, trade names, non-compete agreements, core deposits, investment banking backlog, and acquired technology that are amortized over their contractual or determined useful lives. Intangible assets as of December 31, 2020 and 2019, were as follows (in thousands) December 31, 2020 December 31, 2019 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Customer relationships $ 202,342 $ 85,152 $ 207,253 $ 75,987 Trade names 28,659 15,660 28,659 13,649 Non-compete agreements 9,240 4,229 9,490 2,828 Core deposits 8,615 4,809 8,615 2,985 Investment banking backlog 4,245 2,734 4,245 1,787 Acquired technology 840 373 840 93 $ 253,941 $ 112,957 $ 259,102 $ 97,329 Amortization expense related to intangible assets was $19.6 million, $16.0 million, and $12.6 million for the years ended December 31, 2020, 2019, and 2018, respectively, and is included in other operating expenses in the consolidated statements of operations. The weighted-average remaining lives of the following intangible assets at December 31, 2020, are: customer relationships, 10.5 years; trade name, 9.3 years; non-compete agreements, 6.1 years; core deposits, 3.5 years; investment banking backlog, 8.1 years; and acquired technology, 1.7 years. We have an intangible asset that is not subject to amortization and is, therefore, not included in the table below. As of December 31, 2020, we expect amortization expense in future periods to be as follows (in thousands) Fiscal year 2021 $ 17,806 2022 16,454 2023 14,601 2024 13,886 2025 11,826 Thereafter 64,293 $ 138,866

Borrowings and Federal Home Loa

Borrowings and Federal Home Loan Bank Advances	12 Months Ended
	Dec. 31, 2020
Short Term Debt Other Disclosures [Abstract]
Borrowings and Federal Home Loan Bank Advances	NOTE 11 – 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 December 31, 2020, totaled $1.0 billion with five 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 $490.0 million during the year ended December 31, 2020. 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 December 31, 2020, we had no outstanding balances on our uncommitted secured lines of credit. The Federal Home Loan advances are floating-rate advances. The weighted average interest rates on these advances during the year ended December 31, 2020, was 1.30%. The advances are secured by Stifel Bancorp’s residential mortgage loan portfolio and investment portfolio. The interest rates reset on a daily basis. Stifel Bancorp has the option to prepay these advances without penalty on the interest reset date. At December 31, 2020, there were no Federal Home Loan advances. Our committed bank line financing at December 31, 2020, consisted of a $200.0 million revolving credit facility. The credit facility expires in March 2024. The applicable interest rate under the revolving credit facility is calculated as a per annum rate equal to the London Interbank Offered Rate (“LIBOR”) plus 1.75%, as defined in the revolving credit facility. At December 31, 2020, we had no advances on our revolving credit facility and were in compliance with all covenants. Stifel, our broker-dealer subsidiary, has a 364-day Credit Agreement (“Stifel Credit Facility”) with a maturity date of June 2021 in which the lenders are a number of financial institutions. This committed unsecured borrowing facility provides for maximum borrowings of up to $300.0 million at variable rates of interest. At December 31, 2020, we had no advances on the Stifel Credit Facility and were in compliance with all covenants.

Senior Notes

Senior Notes	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Senior Notes	NOTE 12 – Senior Notes The following table summarizes our senior notes as of December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 4.25% senior notes, due 2024 (1) $ 500,000 $ 500,000 4.00% senior notes, due 2030 (2) 400,000 — 5.20% senior notes, due 2047 (3) 225,000 225,000 3.50% senior notes, due 2020 (4) — 300,000 1,125,000 1,025,000 Debt issuance costs, net (12,591 ) (7,990 ) Senior notes, net $ 1,112,409 $ 1,017,010 ( 1) In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.250% 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 (4) In December 2015, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 3.50% senior notes due December 2020 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	12 Months Ended
	Dec. 31, 2020
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Bank Deposits	NOTE 13 – 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 December 31, 2020 and 2019, were as follows (in thousands) December 31, 2020 2019 Demand deposits (interest-bearing) $ 16,886,953 $ 14,643,966 Demand deposits (non-interest-bearing) 411,890 165,657 Certificates of deposit 97,654 522,958 $ 17,396,497 $ 15,332,581 The weighted-average interest rate on deposits was 0.09% and 0.64% at December 31, 2020 and 2019, respectively. Scheduled maturities of certificates of deposit at December 31, 2020 and 2019, were as follows (in thousands) December 31, 2020 2019 Certificates of deposit, less than $100,000: Within one year $ 2,719 $ 5,305 One to three years 409 360 Three to five years 254 13 $ 3,382 $ 5,678 Certificates of deposit, $100,000 and greater: Within one year $ 63,650 $ 441,341 One to three years 30,622 68,855 Three to five years — 7,084 94,272 517,280 $ 97,654 $ 522,958 At December 31, 2020 and 2019, the amount of deposits includes related party deposits, primarily interest-bearing and time deposits of $6.7 million and $6.7 million, respectively. Brokerage customers’ deposits were $16.0 billion and $13.9 billion, respectively.

Debentures To Stifel Financial

Debentures To Stifel Financial Capital Trusts	12 Months Ended
	Dec. 31, 2020
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust [Abstract]
Debentures To Stifel Financial Capital Trusts	NOTE 14 – Debentures to Stifel Financial Capital Trusts The following table summarizes our debentures to Stifel Financial Capital Trusts as of December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 Debenture to Stifel Financial Capital Trust II (1) $ 20,000 $ 20,000 Debenture to Stifel Financial Capital Trust III (2) 35,000 35,000 Debenture to Stifel Financial Capital Trust IV (3) 5,000 5,000 $ 60,000 $ 60,000 (1) On August 12, 2005, we completed a private placement of $35.0 million of 6.38% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust II (the “Trust II”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on September 30, 2035, but may be redeemed by our company, and in turn, the Trust II would call the debenture beginning September 30, 2010. The Trust II requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.70% per annum. During 2016, we extinguished $15.0 million of the Trust II debentures. (2) On March 30, 2007, we completed a private placement of $35.0 million of 6.79% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust III (the “Trust III”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on June 6, 2037, but may be redeemed by our company, and in turn, Trust III would call the debenture beginning June 6, 2012. Trust III requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.85% per annum. (3) On June 28, 2007, we completed a private placement of $35.0 million of 6.78% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust IV (the “Trust IV”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on September 6, 2037, but may be redeemed by our company, and in turn, Trust IV would call the debenture beginning September 6, 2012. Trust IV requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.85% per annum.

Disclosures About Offsetting As

Disclosures About Offsetting Assets and Liabilities	12 Months Ended
	Dec. 31, 2020
Offsetting [Abstract]
Disclosures About Offsetting Assets and Liabilities	NOTE 15 – Disclosures About Offsetting Assets and Liabilities The following table provides information about financial assets and derivative assets that are subject to offset as of December 31, 2020 and 2019 (in thousands) Gross amounts not offset in the Statement of Financial Condition Gross Amounts of Recognized Assets Gross Amounts Offset in the of Financial Condition Net Amounts Presented in the Statement of Financial Condition Amounts available for offset Available collateral Net Amount As of December 31, 2020: Securities borrowing (1) $ 313,131 $ — $ 313,131 $ (46,183 ) $ (244,578 ) $ 22,370 Reverse repurchase agreements (2) 217,930 — 217,930 (17,992 ) (199,110 ) 828 $ 531,061 $ — $ 531,061 $ (64,175 ) $ (443,688 ) $ 23,198 As of December 31, 2019: Securities borrowing (1) $ 135,373 $ — $ 135,373 $ (52,319 ) $ (74,760 ) $ 8,294 Reverse repurchase agreements (2) 385,008 — 385,008 (59,892 ) (325,096 ) 20 Cash flow interest rate contracts 1,086 — 1,086 — — 1,086 $ 521,467 $ — $ 521,467 $ (112,211 ) $ (399,856 ) $ 9,400 (1) Securities borrowing transactions are included in receivables from brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 4 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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, respectively. The following table provides information about financial liabilities and derivative liabilities that are subject to offset as of December 31, 2020 and 2019 (in thousands) Gross amounts not offset in the Statement of Financial Condition Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Financial Condition Net Amounts Presented in the Statement of Financial Condition Amounts available for offset Collateral Pledged Net Amount As of December 31, 2020: Securities lending (3) $ (145,124 ) $ — $ (145,124 ) $ 46,183 $ 98,925 $ (16 ) Repurchase agreements (4) (190,955 ) — (190,955 ) 17,992 172,963 — $ (336,079 ) $ — $ (336,079 ) $ 64,175 $ 271,888 $ (16 ) As of December 31, 2019: Securities lending (3) $ (608,333 ) $ — $ (608,333 ) $ 52,319 $ 555,782 $ (232 ) Repurchase agreements (4) (391,634 ) — (391,634 ) 59,892 331,742 — $ (999,967 ) $ — $ (999,967 ) $ 112,211 $ 887,524 $ (232 ) (3) Securities lending transactions are included in payables to brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 4 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 counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

Commitments, Guarantees, and Co

Commitments, Guarantees, and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments, Guarantees, and Contingencies	NOTE 16 – 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 December 31, 2020, 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 December 31, 2020, the fair value of the TBA securities and the estimated fair value of the purchase commitments was $141.2 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 23 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 December 31, 2020 and 2019, 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	12 Months Ended
	Dec. 31, 2020
Loss Contingency Information About Litigation Matters [Abstract]
Legal Proceedings	NOTE 17 – 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	12 Months Ended
	Dec. 31, 2020
Regulatory Capital Requirements [Abstract]
Regulatory Capital Requirements	NOTE 18 – 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 December 31, 2020, Stifel had net capital of $487.7 million, which was 40.0% of aggregate debit items and $463.3 million in excess of its minimum required net capital. At December 31, 2020, 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 December 31, 2020, 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 December 31, 2020, 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 its 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 December 31, 2020, 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 $ 2,391,296 16.5 % $ 652,042 4.5 % $ 941,839 6.5 % Tier 1 capital 2,926,296 20.2 % 869,390 6.0 % 1,159,186 8.0 % Total capital 3,080,234 21.3 % 1,159,186 8.0 % 1,448,983 10.0 % Tier 1 leverage 2,926,296 11.9 % 984,215 4.0 % 1,230,269 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 $ 1,029,659 11.4 % $ 404,757 4.5 % $ 584,648 6.5 % Tier 1 capital 1,029,659 11.4 % 539,675 6.0 % 719,567 8.0 % Total capital 1,142,093 12.7 % 719,567 8.0 % 899,459 10.0 % Tier 1 leverage 1,029,659 7.1 % 576,387 4.0 % 720,483 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 $ 209,795 16.5 % $ 57,122 4.5 % $ 82,510 6.5 % Tier 1 capital 209,795 16.5 % 76,163 6.0 % 101,550 8.0 % Total capital 224,281 17.7 % 101,550 8.0 % 126,938 10.0 % Tier 1 leverage 209,795 7.3 % 114,655 4.0 % 143,319 5.0 %

Operating Leases

Operating Leases	12 Months Ended
	Dec. 31, 2020
Lessee Disclosure [Abstract]
Operating Leases	NOTE 19 – Operating Leases Our operating leases primarily relate to office space and office equipment with remaining lease terms of 1 to 15 years. At December 31, 2020 and 2019, operating lease right-of-use assets were $793.2 million and $725.8 million, respectively, and included in fixed assets, net in the consolidated statements of financial condition, and lease liabilities were $839.8 million and $766.0 million, respectively, and included in accounts payable and accrued expenses in the consolidated statements of financial condition. The table below summarizes our net lease cost for the years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 2019 Operating lease cost $ 102,595 $ 90,354 Short-term lease cost 502 1,479 Variable lease cost 68 79 Sublease income (3,894 ) (4,761 ) Net lease cost $ 99,271 $ 87,151 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 year ended December 31, 2020 (in thousands) Operating lease cash flows $ 89,122 Right-of-use assets obtained in exchange for new operating lease liabilities $ 215,662 Weighted average remaining lease term 12.3 years Weighted average discount rate 4.23 % In the table above, the weighted-average discount rate represents our company’s incremental borrowing rate as of January 2019 for leases existing on the date of adoption of the new lease standard and at the lease inception date for leases entered into subsequent to the adoption of ASU 2016-02. The table below presents information about operating lease liabilities as of December 31, 2020, (in thousands, except percentages) 2021 $ 93,544 2022 96,278 2023 95,359 2024 94,249 2025 93,040 Thereafter 611,933 Total undiscounted lease payments 1,084,403 Imputed interest (244,597 ) Total operating lease liabilities $ 839,806

Revenues From Contracts With Cu

Revenues From Contracts With Customers	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenues From Contracts With Customers	NOTE 20 – 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 years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 2019 Revenues from contracts with customers: Commissions $ 760,627 $ 667,494 Investment banking 952,308 817,421 Asset management and service fees 917,424 848,035 Other 48,529 19,287 Total revenue from contracts with customers 2,678,888 2,352,237 Other sources of revenue: Interest 523,832 724,882 Principal transactions 588,303 404,751 Other 26,816 33,091 Total revenues $ 3,817,839 $ 3,514,961 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 years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 513,247 $ 247,380 $ — $ 760,627 Capital raising (1) 36,005 488,152 — 524,157 Advisory fees (1) 19 428,132 — 428,151 Investment banking 36,024 916,284 — 952,308 Asset management 917,353 71 — 917,424 Other 45,438 — 3,091 48,529 Total 1,512,062 1,163,735 3,091 2,678,888 Primary Geographic Region: United States 1,512,062 940,272 3,091 2,455,425 United Kingdom — 143,960 — 143,960 Other — 79,503 — 79,503 $ 1,512,062 $ 1,163,735 $ 3,091 $ 2,678,888 (1 ) Year Ended December 31, 2019 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 477,401 $ 190,093 $ — $ 667,494 Capital raising 37,915 331,527 — 369,442 Advisory fees — 447,979 — 447,979 Investment banking 37,915 779,506 — 817,421 Asset management 847,977 58 — 848,035 Other 16,437 — 2,850 19,287 Total 1,379,730 969,657 2,850 2,352,237 Primary Geographic Region: United States 1,379,730 822,758 2,850 2,205,338 United Kingdom — 135,529 — 135,529 Other — 11,370 — 11,370 $ 1,379,730 $ 969,657 $ 2,850 $ 2,352,237 See Note 25 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 December 31, 2020. 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 December 31, 2020. 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 $148.6 million and $151.3 million at December 31, 2020 and December 31, 2019, respectively, in other assets in the consolidated statements of financial condition. We had no significant impairments related to these receivables during the year ended December 31, 2020. Our deferred revenue primarily relates to retainer fees received in investment banking advisory engagements where the performance obligation has not yet been satisfied. Deferred revenue at December 31, 2020 and December 31, 2019, was $12.1 million and $11.3 million, respectively, and included in accounts payable and accrued expenses in the consolidated statements of financial condition.

Interest Income and Interest Ex

Interest Income and Interest Expense	12 Months Ended
	Dec. 31, 2020
Banking And Thrift Interest [Abstract]
Interest Income and Interest Expense	NOTE 21 – Interest Income and Interest Expense The components of interest income and interest expense are as follows (in thousands) Year Ended December 31, 2020 2019 2018 Interest income: Loans held for investment, net $ 331,813 $ 379,848 $ 300,541 Investment securities 149,915 231,021 252,200 Margin balances 28,155 52,008 49,515 Financial instruments owned 12,594 23,528 21,407 Other 1,355 38,477 22,786 $ 523,832 $ 724,882 $ 646,449 Interest expense: Senior notes $ 54,063 $ 44,507 $ 44,610 Bank deposits 14,550 95,813 82,256 Federal Home Loan Bank advances 3,667 7,872 15,173 Other (6,502 ) 29,739 28,037 $ 65,778 $ 177,931 $ 170,076

Employee Incentive, Deferred Co

Employee Incentive, Deferred Compensation, And Retirement Plans	12 Months Ended
	Dec. 31, 2020
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]
Employee Incentive, Deferred Compensation, and Retirement Plans	NOTE 22 – 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 9.8 million shares at December 31, 2020. 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 $156.2 million, $135.5 million, and $111.8 million for the years ended December 31, 2020, 2019, and 2018, respectively. The tax benefit related to stock-based compensation was $25.9 million, $11.9 million, and $4.0 million for the years ended December 31, 2020, 2019, and 2018, 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 associate 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 two 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 our company’s achievement of the pre-determined performance objectives during the performance period. The PRSUs will be measured over a four-year five-year circumstances as described in the Plan. At December 31, 2020, the total number of restricted stock units, PRSUs, and restricted stock awards outstanding was 20.9 million, of which 17.9 million were unvested. A summary of unvested restricted equity award activity, which includes restricted stock units and restricted stock awards, for the year ended December 31, 2020, is presented below (in thousands, except weighted-average fair value) Weighted-average grant date fair value Unvested December 31, 2019 20,203 $ 31.89 Granted 3,683 34.67 Vested (5,464 ) 27.69 Cancelled (493 ) 36.33 Unvested December 31, 2020 17,929 $ 33.61 At December 31, 2020, there was approximately $491.1 million of unrecognized compensation cost for deferred awards, which is expected to be recognized over a weighted-average period of 2.7 years. The fair value of restricted stock units and restricted stock that vested or converted during the year ended December 31, 2020, was $151.3 million. 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 financial advisors who achieve certain levels of production a contribution of a certain percentage of their gross commissions. As stipulated by the Plan, the financial advisors have a contribution of 5% of their gross commissions. The contribution 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 financial advisors, upon joining our 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 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, included in compensation and benefits in the consolidated statements of operations, were $13.9 million, $13.4 million, and $12.8 million for the years ended December 31, 2020, 2019, and 2018, respectively.

Off-Balance Sheet Credit Risk

Off-Balance Sheet Credit Risk	12 Months Ended
	Dec. 31, 2020
Concentration Risks Types No Concentration Percentage [Abstract]
Off-Balance Sheet Credit Risk	NOTE 23 – 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 December 31, 2020 and 2019, the fair value of securities accepted as collateral where we are permitted to sell or repledge the securities was $1.8 billion and $2.3 billion, respectively, and the fair value of the collateral that had been sold or repledged was $191.0 million and $391.6 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 December 31, 2020, 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 December 31, 2020 and 2019, Stifel Bancorp had outstanding commitments to originate loans aggregating $889.0 million and $384.5 million, respectively. The commitments extended over varying periods of time, with all commitments at December 31, 2020, 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 December 31, 2020 and 2019, Stifel Bancorp had outstanding letters of credit totaling $31.8 million and $38.3 million, respectively. A majority of the standby letters of credit commitments at December 31, 2020, 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 December 31, 2020 and 2019, Stifel Bancorp had granted unused lines of credit to commercial and consumer borrowers aggregating $2.5 billion and $1.5 billion, respectively. Effective January 1, 2020, we adopted the new accounting standard for credit losses that requires evaluation of our loan portfolio for any expected losses with recognition of an allowance for credit losses, when applicable. For more information, see Note 2 – Summary of Significant Accounting Policies

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income Taxes	NOTE 24 – Income Taxes The provision for income taxes consists of the following (in thousands) Year Ended December 31, 2020 2019 2018 Current taxes: Federal $ 143,859 $ 123,802 $ 89,971 State 42,705 30,464 36,070 Foreign (236 ) 1,684 99 186,328 155,950 126,140 Deferred taxes: Federal (31,019 ) (7,027 ) 11,932 State (5,803 ) 4,266 2,267 Foreign (1,818 ) (4,037 ) 55 (38,640 ) (6,798 ) 14,254 Provision for income taxes $ 147,688 $ 149,152 $ 140,394 Reconciliation of the statutory federal income tax rate with our company’s effective income tax rate is as follows (in thousands) Year Ended December 31, 2020 2019 2018 Statutory rate $ 136,744 $ 125,485 $ 112,215 State income taxes, net of federal income tax 27,934 28,333 30,762 Change in uncertain tax position 666 2,661 (617 ) Foreign tax rate difference (2,032 ) (629 ) (318 ) Excess tax benefit from stock-based compensation (21,605 ) (9,670 ) (3,700 ) Revaluation of deferred tax assets — — (3,006 ) Other, net 5,981 2,972 5,058 $ 147,688 $ 149,152 $ 140,394 Tax effect of temporary differences and carryforwards that comprise significant portions of deferred tax assets and liabilities (in thousands) December 31, 2020 2019 Deferred tax assets: Lease liabilities $ 211,524 $ 181,607 Deferred compensation 79,068 80,389 Accrued expenses 73,835 26,166 Receivable reserves 41,963 33,199 Net operating loss carryforwards 32,727 28,781 Other 3,311 3,210 Total deferred tax assets 442,428 353,352 Valuation allowance (11,740 ) (5,042 ) 430,688 348,310 Deferred tax liabilities: Lease ROU asset (210,670 ) (180,598 ) Goodwill and other intangibles (51,189 ) (46,625 ) Depreciation (15,371 ) (7,231 ) Unrealized gain on investments (11,585 ) (5,619 ) Prepaid expenses (5,396 ) (3,857 ) (294,211 ) (243,930 ) Net deferred tax asset $ 136,477 $ 104,380 Our net deferred tax asset at December 31, 2020, includes net operating loss carryforwards of $226.2 million that expire between 2024 and 2040. Certain of our net operating loss carryforwards do not expire. A valuation allowance is recorded to the extent that it is more likely than not that any portion of the deferred tax asset will not be realized. The valuation allowance was increased by $6.7 million. We believe the realization of the remaining net deferred tax asset of $136.5 million is more likely than not based on the ability to carry back losses against prior year taxable income for tax years before 2021 and carry forward net operating losses indefinitely after 2021, and expectations of future taxable income, which is supported by a history of cumulative income. The current tax payable, included in accounts payable and accrued expenses, is $38.2 million and $15.0 million as of December 31, 2020 and 2019, respectively. At December 31, 2020 and 2019, the Company did not have a tax receivable. As of December 31, 2020, we considered all undistributed earnings of non-U.S. subsidiaries to be permanently reinvested. Therefore, we have not provided for any U.S. deferred income taxes. Because the time or manner of repatriation is uncertain, we cannot determine the impact of local taxes, withholding taxes and foreign tax credits associated with the future repatriation of such earnings, and therefore cannot quantify the tax liability that would be payable in the event all such foreign earnings are repatriated. Uncertain Tax Positions As of December 31, 2020 and 2019, we had $4.0 million and $3.4 million, respectively, of gross unrecognized tax benefits, all of which, if recognized, would impact the effective tax rate. We recognize interest and penalties related to uncertain tax positions in provision for income taxes in the consolidated statements of operations. As of December 31, 2020 and 2019, we had accrued interest and penalties of $0.4 million and $0.2 million, respectively, before benefit of federal tax deduction, included in accounts payable and accrued expenses in our consolidated statements of financial condition. The amount of interest and penalties recognized in our consolidated statements of operations for the years ended December 31, 2020, 2019, and 2018, was not significant. The following table summarizes the activity related to our company’s unrecognized tax benefits from January 1, 2018 to December 31, 2020 (in thousands) Year Ended December 31, 2020 2019 2018 Beginning balance $ 3,387 $ 312 $ 3,180 Increase related to prior year tax positions 977 2,173 4 Decrease related to prior year tax positions (11 ) (54 ) (33 ) Increase related to current year tax positions 790 956 191 Decrease related to settlements with taxing authorities (1,181 ) — (3,030 ) Ending balance $ 3,962 $ 3,387 $ 312 We file income tax returns with the U.S. federal jurisdiction, various states, and certain foreign jurisdictions. We are not subject to U.S. federal examination for taxable years before 2013. We are not subject to certain state and local, or non-U.S. income tax examinations for taxable years before 2010. There is a reasonable possibility that the unrecognized tax benefits will change within the next 12 months as a result of the expiration of various statutes of limitations or for the resolution of U.S. federal and state examinations, but we do not expect this change to be material to the consolidated financial statements.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Segment Reporting	NOTE 25 – 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 years ended December 31, 2020, 2019, and 2018, is as follows (in thousands) Year Ended December 31, 2020 2019 2018 Net revenues: (1) Global Wealth Management $ 2,190,826 $ 2,130,559 $ 1,990,319 Institutional Group 1,583,147 1,214,017 1,055,495 Other (21,912 ) (7,546 ) (20,933 ) $ 3,752,061 $ 3,337,030 $ 3,024,881 Income/(loss) before income taxes: Global Wealth Management $ 725,884 $ 785,960 $ 737,003 Institutional Group 325,285 175,670 157,051 Other (400,009 ) (362,492 ) (359,692 ) $ 651,160 $ 599,138 $ 534,362 (1) No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2020, 2019, and 2018. The following table presents our company’s total assets on a segment basis at December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 Global Wealth Management $ 21,743,202 $ 20,675,580 Institutional Group 3,733,661 3,668,723 Other 1,127,391 265,922 $ 26,604,254 $ 24,610,225 We have operations in the United States, United Kingdom, Europe, and Canada. Our 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 were earned for the years ended December 31, 2020, 2019, and 2018, were as follows (in thousands): Year Ended December 31, 2020 2019 2018 United States $ 3,460,930 $ 3,154,285 $ 2,855,955 United Kingdom 197,859 163,552 156,557 Other 93,272 19,193 12,369 $ 3,752,061 $ 3,337,030 $ 3,024,881

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 26 – 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 years ended December 31, 2020, 2019, and 2018 (in thousands, except per share data) Year Ended December 31, 2020 2019 2018 Net income applicable to Stifel Financial Corp. $ 503,472 $ 448,396 $ 393,968 Preferred dividends 27,261 17,319 9,375 Net income available to common shareholders $ 476,211 $ 431,077 $ 384,593 Shares for basic and diluted calculation: Average shares used in basic computation 106,174 107,997 107,679 Dilutive effect of stock options and units (1) 8,399 9,881 14,303 Average shares used in diluted computation 114,573 117,878 121,982 Earnings per common share: Basic $ 4.49 $ 3.99 $ 3.57 Diluted $ 4.16 $ 3.66 $ 3.15 (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. Diluted earnings per share include stock options and units. For the years ended December 31, 2020, 2019, and 2018, the anti-dilutive effect from restricted stock units was immaterial. Cash Dividends During the year ended December 31, 2020, we declared and paid cash dividends of $0.45 per common share. During the year ended December 31, 2019, we declared and paid cash dividends of $0.40 per common share. During the year ended December 31, 2018, we declared and paid cash dividends of $0.32 per common share.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Shareholders' Equity	NOTE 27 – 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 December 31, 2020, the maximum number of shares that may yet be purchased under this plan was 13.3 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 employee benefit plans and for general corporate purposes. During the year ended December 31, 2020, we repurchased $ 58.3 215.4 Issuance of Common Stock from Treasury During the years ended December 31, 2020 and 2019, we issued 1.6 million and 1.4 million shares, respectively, of common stock from treasury primarily as a result of vesting and exercise transactions under our incentive stock award plans. Issuance of Common Stock On August 31, 2018, we issued approximately 2.0 million shares for acquisition of Business Bancshares, Inc. See Note 3 in the notes to consolidated financial statements for additional information regarding the acquisition. 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 February 21, 2019, the Company issued $150.0 million of 6.25% Non-Cumulative Perpetual Preferred Stock, Series B, $1.00 par value, with a liquidation preference of $25,000 per share (equivalent to $25 liquidation preference per depositary share). In March 2019, we completed a public offering of an additional $10.0 million of Series B 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 6.25%, payable quarterly, in arrears. The Company may redeem the Series B preferred stock at its option, subject to regulatory approval, on or after March 15, 2024.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2020
Variable Interest Entity Not Primary Beneficiary Disclosures [Abstract]
Variable Interest Entities	NOTE 28 – 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 $295.6 million at December 31, 2020. 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 years ended December 31, 2020, 2019, and 2018. In addition, our direct investment interest in these entities is insignificant at December 31, 2020 and 2019. 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	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	NOTE 29 – 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.

Quarterly Financial Information

Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (Unaudited)	NOTE 30 – Quarterly Financial Information (Unaudited) Year Ended December 31, 2020 ($ in thousands, except per share amounts) 1 st 2 nd 3 rd 4 th Operating revenues $ 776,214 $ 780,533 $ 782,711 $ 954,549 Interest revenue 161,177 128,368 114,411 119,876 Total revenues 937,391 908,901 897,122 1,074,425 Interest expense 24,357 13,084 13,822 14,515 Net revenues 913,034 895,817 883,300 1,059,910 Total non-interest expenses 797,928 752,857 724,907 825,209 Income before income tax expense 115,106 142,960 158,393 234,701 Provision for income taxes 28,517 35,073 37,866 46,232 Net income 86,589 107,887 120,527 188,469 Preferred dividends 4,844 4,843 9,897 7,677 Net income available to common shareholders $ 81,745 $ 103,044 $ 110,630 $ 180,792 Earnings per common share: Basic $ 0.76 $ 0.97 $ 1.04 $ 1.70 Diluted $ 0.71 $ 0.92 $ 0.97 $ 1.55 Cash dividends declared per common share $ 0.11 $ 0.11 $ 0.11 $ 0.11 Weighted-average number of common shares outstanding: Basic 106,929 105,791 105,941 106,041 Diluted 114,929 111,581 113,775 116,828 Year Ended December 31, 2019 ($ in thousands, except per share amounts) 1 st 2 nd 3 rd 4 th Operating revenues $ 628,797 $ 665,738 $ 686,932 $ 808,612 Interest revenue 191,071 187,940 178,784 167,087 Total revenues 819,868 853,678 865,716 975,699 Interest expense 49,448 52,891 44,144 31,448 Net revenues 770,420 800,787 821,572 944,251 Total non-interest expenses 632,611 652,805 670,818 781,658 Income before income tax expense 137,809 147,982 150,754 162,593 Provision for income taxes 38,370 38,225 40,632 31,925 Net income 99,439 109,757 110,122 130,668 Net income/(loss) applicable to non-controlling interests 232 672 708 (22 ) Net income applicable to Stifel Financial Corp. 99,207 109,085 109,414 130,690 Preferred dividends 2,344 5,288 4,844 4,843 Net income available to common shareholders $ 96,863 $ 103,797 $ 104,570 $ 125,847 Earnings per common share: Basic $ 0.90 $ 0.95 $ 0.98 $ 1.19 Diluted $ 0.82 $ 0.88 $ 0.89 $ 1.08 Cash dividends declared per common share $ 0.10 $ 0.10 $ 0.10 $ 0.10 Weighted-average number of common shares outstanding: Basic 107,550 108,779 106,796 105,705 Diluted 118,815 118,619 117,216 116,720

Nature of Operations and Basi_2

Nature of Operations and Basis Of Presentation (Policies)	12 Months Ended
	Dec. 31, 2020
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. (“KBW”), 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. The accompanying consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, which require management to make certain estimates and assumptions that affect the reported amounts. We consider significant estimates, which are most susceptible to change and impacted significantly by judgments, assumptions, and estimates, to be: valuation of financial instruments and investments in partnerships, accrual for contingencies, allowance for loan losses, derivative instruments and hedging activities, fair value of goodwill and intangible assets, provision for income taxes and related tax reserves, and forfeitures associated with stock-based compensation. Actual results could differ from those estimates. On March 27, 2020, the Company completed the sale of Ziegler Capital Management, LLC (“ZCM”), a wholly owned asset management subsidiary. The assets and liabilities of ZCM were classified as held for sale and are included in other assets and accounts payable and accrued expenses, respectively, at December 31, 2019. See Note 10 for further information. 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. For consolidated subsidiaries that are less than wholly owned, the third-party holdings of equity interests are referred to as non-controlling interests. The portion of shareholders’ equity that is attributable to non-controlling interests for such subsidiaries is presented as non-controlling interests, a component of total equity, in the consolidated statements of financial condition. Our non-controlling interest at December 31, 2019, represented a 27.5% third-party ownership of North Shore Aviation Holdings LLC (“North Shore”), which was a consolidated subsidiary of the Company that, through its subsidiary, owns airplane engines. On February 7, 2020, North Shore entered into a Credit Agreement with North Shore Aviation Trust Series 2020-1 (the “Trust”) whereby the Trust provided North Shore with a $120.0 million credit facility. North Shore was recapitalized with funding from the issuance of the senior notes and E-Certificates by the Trust. Upon the recapitalization, Stifel Bancorp’s equity in North Shore was redeemed. We deconsolidated the related assets, liabilities, and non-controlling interests of North Shore. 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, 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 28 for additional information on VIEs.

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Cash and Cash Equivalents	Cash and Cash Equivalents We consider money market mutual funds and highly liquid investments with original maturities of three months or less that are not restricted or segregated to be cash equivalents. Cash and cash equivalents include deposits with banks, federal funds sold, money market mutual funds, and certificates of deposit. Cash and cash equivalents also include balances that our bank subsidiaries maintain at the Federal Reserve Bank.
Cash Segregated For Regulatory Purposes	Cash Segregated for Regulatory Purposes Our broker-dealer subsidiaries are subject to Rule 15c3-3 under the Securities Exchange Act of 1934, which requires our company to maintain cash or qualified securities in a segregated reserve account for the exclusive benefit of its clients. In accordance with Rule 15c3-3, our company has portions of its cash segregated for the exclusive benefit of clients at December 31, 2020.
Brokerage Client Receivables, Net	Brokerage Client Receivables, Net Brokerage client receivables include receivables of our company’s broker-dealer subsidiaries, which represent amounts due on cash and margin transactions and are generally collateralized by securities owned by clients. Brokerage client receivables, primarily consisting of floating-rate loans collateralized by customer-owned securities, are charged interest at rates similar to other such loans made throughout the industry. The receivables are reported at their outstanding principal balance net of allowance for doubtful accounts. When a brokerage client receivable is considered to be impaired, the amount of the impairment is generally measured based on the fair value of the securities acting as collateral, which is measured based on current prices from independent sources, such as listed market prices or broker-dealer price quotations. Securities owned by customers, including those that collateralize margin or other similar transactions, are not reflected in the consolidated statements of financial condition.
Securities Borrowed and Securities Loaned	Securities Borrowed and Securities Loaned Securities borrowed require our company to deliver cash to the lender in exchange for securities and are included in receivables from brokers, dealers, and clearing organizations in the consolidated statements of financial condition. For securities loaned, we generally receive collateral in the form of cash in an amount in excess of the market value of securities loaned. Securities loaned are included in payables to brokers, dealers, and clearing organizations in the consolidated statements of financial condition. We monitor the market value of securities borrowed and loaned on a daily basis, with additional collateral obtained or refunded as necessary. Fees received or paid are recorded in interest revenue or interest expense in the consolidated statements of operations. Substantially all of these transactions are executed under master netting agreements, which gives us right of offset in the event of counterparty default; however, such receivables and payables with the same counterparty are not set off in the consolidated statements of financial condition.
Securities Purchased Under Agreements to Resell and Repurchase Agreements	Securities Purchased Under Agreements to Resell and Repurchase Agreements Securities purchased under agreements to resell (“resale agreements”) are collateralized financing transactions that are recorded at their contractual amounts plus accrued interest. We obtain control of collateral with a market value equal to or in excess of the principal amount loaned and accrued interest under resale agreements. These agreements are short-term in nature and are generally collateralized by U.S. government securities, U.S. government agency securities, and corporate bonds. We value collateral on a daily basis, with additional collateral obtained when necessary to minimize the risk associated with this activity. Securities sold under agreements to repurchase (“repurchase agreements”) are collateralized financing transactions that are recorded at their contractual amounts plus accrued interest. We make delivery of securities sold under agreements to repurchase and monitor the value of collateral on a daily basis. When necessary, we will deliver additional collateral.
Financial Instruments	Financial Instruments We measure certain financial assets and liabilities at fair value on a recurring basis, including cash equivalents, financial instruments owned, available-for-sale securities, investments, financial instruments sold, but not yet purchased, and derivatives. Other than those separately discussed in the notes to the consolidated financial statements, the remaining financial instruments are generally short-term in nature, and their carrying values approximate fair value. The fair value of a financial instrument is defined as the price that would be received to sell an asset or paid to transfer a liability (i.e., “the exit price”) in an orderly transaction between market participants at the measurement date. We have categorized our financial instruments measured at fair value into a three-level classification in accordance with Topic 820, “Fair Value Measurement,” Level 1 – Quoted prices (unadjusted) are available in active markets for identical assets or liabilities as of the measurement date. A quoted price for an identical asset or liability in an active market provides the most reliable fair value measurement, because it is directly observable to the market. Level 2 – Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the measurement date. The nature of these financial instruments includes instruments for which quoted prices are available but traded less frequently, derivative instruments whose fair value have 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 3 – Instruments that have little to no pricing observability as of the measurement date. These financial instruments do not have 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. Valuation of Financial Instruments When available, we use observable market prices, observable market parameters, or broker or dealer prices (bid and ask prices) to derive the fair value of financial instruments. In the case of financial instruments transacted on recognized exchanges, the observable market prices represent quotations for completed transactions from the exchange on which the financial instrument is principally traded. A substantial percentage of the fair value of our financial instruments owned, available-for-sale securities, investments, and financial instruments sold, but not yet purchased, are based on observable market prices, observable market parameters, or derived from broker or dealer prices. The availability of observable market prices and pricing parameters can vary from product to product. Where available, observable market prices and pricing or market parameters in a product may be used to derive a price without requiring significant judgment. In certain markets, observable market prices or market parameters are not available for all products, and fair value is determined using techniques appropriate for each particular product. These techniques involve some degree of judgment. For investments in illiquid or privately held securities that do not have readily determinable fair values, the determination of fair value requires us to estimate the value of the securities using the best information available. Among the factors we consider in determining the fair value of investments are the cost of the investment, terms and liquidity, developments since the acquisition of the investment, the sales price of recently issued securities, the financial condition and operating results of the issuer, earnings trends and consistency of operating cash flows, the long-term business potential of the issuer, the quoted market price of securities with similar quality and yield that are publicly traded, and other factors generally pertinent to the valuation of investments. In instances where a security is subject to transfer restrictions, the value of the security is based primarily on the quoted price of a similar security without restriction but may be reduced by an amount estimated to reflect such restrictions. The fair value of these investments is subject to a high degree of volatility and may be susceptible to significant fluctuation in the near term, and the differences could be material. The degree of judgment used in measuring the fair value of financial instruments generally correlates to the level of pricing observability. Pricing observability is impacted by a number of factors, including the type of financial instrument, whether the financial instrument is new to the market and not yet established, and the characteristics specific to the transaction. Financial instruments with readily available active quoted prices for which fair value can be measured from actively quoted prices generally will have a higher degree of pricing observability and a lesser degree of judgment used in measuring fair value. Conversely, financial instruments rarely traded or not quoted will generally have less, or no, pricing observability and a higher degree of judgment used in measuring fair value. See Note 5 for additional information on how we value our financial instruments.
Available-for-Sale and Held-to-Maturity Securities	Available-for-Sale and Held-to-Maturity Securities Securities available for sale, which are carried at fair value, include U.S. government agency securities; state and municipal securities; agency, non-agency, and commercial mortgage-backed securities; corporate fixed income securities; and asset-backed securities, which primarily includes collateralized loan obligations. 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 asset-backed securities, consisting of collateralized loan obligation securities and student loan ARS. We evaluate each available-for-sale security where the value has declined below amortized cost. If our company intends to sell or believes it is more likely than not that it will be required to sell the debt security, it is written down to fair value through earnings. For available-for-sale debt securities our company intends to hold, we evaluate the debt securities for expected credit losses except for debt securities that are guaranteed by the U.S. Treasury or U.S. government agencies where we apply a zero credit loss assumption. For the remaining available-for-sale debt securities, we consider qualitative parameters such as internal and external credit ratings and the value of underlying collateral. If an available-for-sale debt security fails any of the qualitative parameters, a discounted cash flow analysis is used by our company to determine if a portion of the unrealized loss is a result of a credit loss. Any credit losses determined are recognized as an increase to the allowance for credit losses through provision expense recorded in the consolidated statement of operations in provision for credit losses. Cash flows expected to be collected are estimated using all relevant information available, such as remaining payment terms, prepayment speeds, the financial condition of the issuer, expected defaults, and the value of the underlying collateral. If any of the decline in fair value is related to market factors, that amount is recognized in accumulated other comprehensive income. In certain instances, the credit loss may exceed the total decline in fair value, in which case, the allowance recorded is limited to the difference between the amortized cost and the fair value of the asset. We separately evaluate our held-to-maturity debt securities for any credit losses. We perform a discounted cash flow analysis to estimate any credit losses, which are then recognized as part of the allowance for credit losses. For available-for-sale and held-to-maturity debt securities, we have established a nonaccrual policy that results in timely write-off of accrued interest. See Note 7 for more information. Unrealized gains and losses on our available-for-sale securities are reported, net of taxes, in accumulated other comprehensive income/(loss) included in shareholders’ equity. Amortization of premiums and accretion of discounts are recorded as interest income in the consolidated statements of operations using the interest method. Realized gains and losses from sales of securities available for sale are determined on a specific identification basis and are included in other income in the consolidated statements of operations in the period they are sold. For securities transferred from available-for-sale to held-to-maturity, carrying value also includes unrealized gains and losses recognized in accumulated other comprehensive income/(loss) at the date of transfer. Such unrealized gains or losses are accreted over the remaining life of the security with no impact on future net income.
Loan Classification	Loan Classification We classify loans based on our investment strategy and management’s assessment of our intent and ability to hold loans for the foreseeable future or until maturity. Management’s intent and ability with respect to certain loans may change from time to time depending on a number of factors, including economic, liquidity, and capital conditions. The accounting and measurement framework for loans differs depending on the loan classification. The classification criteria and accounting and measurement framework for bank loans and loans held for sale are described below. Bank Loans Bank loans consist of commercial and residential mortgage loans, commercial and industrial loans, stock-secured loans, home equity loans, construction loans, and consumer loans originated or acquired by Stifel Bancorp. Bank loans include those loans that management has the intent and ability to hold and are recorded at outstanding principal adjusted for any charge-offs, allowance for loan losses, deferred origination fees and costs, and purchased discounts. Loan origination costs, net of fees, and premiums and discounts on purchased loans are deferred and recognized over the contractual life of the loan as an adjustment of yield using the interest method. Bank loans are generally collateralized by real estate, real property, marketable securities, or other assets of the borrower. Interest income is recognized using the effective interest rate method, which is based upon the respective interest rates and the average daily asset balance. Discount accretion/premium amortization is recognized using the effective interest rate method, which is based upon the respective interest rate and expected lives of loans. Allowance for Credit Losses On January 1, 2020, we adopted the new accounting standard that requires the measurement of the allowance for credit losses, which includes the allowance for loan losses and the reserve for unfunded lending commitments, to be based on management’s best estimate of lifetime expected credit losses inherent in the Company’s relevant financial assets. The expected credit losses on our loan portfolio are referred to as the allowance for loan losses and are reported separately as a contra-asset to loans on the consolidated statement of financial condition. 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 provision for loan losses related to the loan portfolio and the provision for unfunded lending commitments are reported in the consolidated statement of operations in provision for credit losses. For loans, the expected credit loss is typically estimated using quantitative methods that consider a variety of factors, such as historical loss experience derived from proxy data, the current credit quality of the portfolio, as well as an economic outlook over the life of the loan. The life of the loan for closed-ended products is based on the contractual maturity of the loan adjusted for any expected prepayments. The contractual maturity includes any extension options that are at the sole discretion of the borrower. For open-ended products, the expected credit loss is determined based on the maximum repayment term associated with future draws from credit lines. In our loss forecasting framework, we incorporate forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios include variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to, unemployment rates, real estate prices, gross domestic product levels, corporate bond spreads, and long-term interest rate forecasts. To estimate losses for contractual periods that extend beyond the forecast horizon, we revert to an average historical loss experience. As any one economic outlook is inherently uncertain, we leverage multiple scenarios. The scenarios that are chosen each quarter and the amount of weighting given to each scenario depend on a variety of factors, including recent economic events, leading economic indicators, and industry trends. The reserve for unfunded lending commitments is estimated using the same scenarios, models, and economic data as the loan portfolio. The allowance for loan losses includes adjustments for qualitative reserves based on our company’s assessment that may not be adequately represented in the quantitative methods or the economic assumptions described above. For example, factors that we consider include changes in lending policies and procedures, business conditions, the nature and size of the portfolio, portfolio concentrations, the volume and severity of past due loans and nonaccrual loans, the effect of external factors such as competition, and legal and regulatory requirements, among others. Further, we consider the inherent uncertainty in quantitative models that are built on historical data. As a result of the uncertainty inherent in the quantitative models, other quantitative and qualitative factors are considered in adjusting allowance amounts, including, but not limited to, the following: model imprecision, imprecision in macroeconomic scenario forecasts, or changes in the economic environment affecting specific portfolio segments that deviate from the macroeconomic forecasts. The evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. Depending on changes in circumstances, future assessments of credit risk may yield materially different results from the prior estimates, which may require an increase or a decrease in the allowance for loan losses. The allowance for credit losses can also be impacted by unanticipated changes in asset quality of the portfolio. In addition, while we have incorporated our estimated impact of the coronavirus (“COVID-19”) pandemic on the economy into our allowance for credit losses, the ultimate impact of COVID-19 is still unknown, including how long economic activities will be impacted and what effect the unprecedented levels of government fiscal and monetary actions will have on the economy and our credit losses. Loans Held for Sale Loans that we intend to sell or for which we do not have the ability and intent to hold for the foreseeable future are classified as held for sale. Loans held for sale consist of fixed-rate and adjustable-rate residential and multi-family real estate mortgage loans intended for sale. Loans held for sale are stated at lower of cost or market value on an individual loan basis. Declines in market value below cost and any gains or losses on the sale of these assets are recognized in other income in the consolidated statements of operations. Market value is determined based on prevailing market prices for loans with similar characteristics or on sale contract prices. Deferred fees and costs related to these loans are not amortized but are recognized as part of the cost basis of the loan at the time it is sold. Because loans held for sale are reported at lower of cost or market value, an allowance for loan losses is not established for loans held for sale.
Impaired Loans	Impaired Loans A loan is considered impaired when, based on current information and events, it is probable that the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement will not be collectible. Factors considered in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. We determine the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record, and the amount of the shortfall in relation to the principal and interest owed. We consider a loan a trouble debt restructuring when an existing borrower is granted concessionary rates or terms, which would not otherwise be offered. The concessions granted do not reflect current market conditions for a new loan of similar risk to another borrower in similar financial circumstances. Once a loan is determined to be impaired, when principal or interest becomes 90 days past due or when collection becomes uncertain, 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. Loans placed on non-accrual status are returned to accrual status when all delinquent principal and interest payments are collected and the collectibility of future principal and interest payments is reasonably assured. Loan losses are charged against the allowance for loan losses when we believe the uncollectibility of a loan balance is certain. Subsequent recoveries, if any, are credited to the allowance for loan losses. We do not include reserves for interest receivable in the measurement of the allowance for credit losses, as we generally classify loans as nonperforming at 90 days past due and reverse interest income for these loans at that time. Large groups of smaller balance homogenous loans are collectively evaluated for impairment. Accordingly, we do not separately identify individual consumer and residential loans for impairment measurements. Impairment is measured on a loan-by-loan basis for non-homogeneous loans, and a specific allowance is established for individual loans determined to be impaired. Impairment is measured by comparing the carrying value of the impaired loan to the present value of its expected cash flow discounted at the loan’s effective interest rate, the loan’s observable market price, or the fair value of the collateral if the loan is collateral dependent. See Note 8 for more information.
Investments	Investments Our broker-dealer subsidiaries report changes in fair value of marketable and non-marketable securities in other income in the consolidated statements of operations. The fair value of marketable investments is generally based on either quoted market or dealer prices. The fair value of non-marketable securities is based on management’s estimate using the best information available, which generally consists of quoted market prices for similar securities and internally developed discounted cash flow models. Investments in the consolidated statements of financial condition contain investments in securities that are marketable and securities that are not readily marketable. These investments are not included in our broker-dealer trading inventory or available-for-sale or held-to-maturity portfolios and represent the acquiring and disposing of debt or equity instruments for our benefit.
Fixed Assets, Net	Fixed Assets, Net Office equipment is depreciated on a straight-line basis over the estimated useful life of the asset of two to seven years. Leasehold improvements are amortized on a straight-line basis over the lesser of the estimated useful life of the asset or the term of the lease. Buildings and building improvements are amortized on a straight-line basis over the estimated useful life of the asset of three to thirty-nine years. Depreciation expense is recorded in occupancy and equipment rental in the consolidated statements of operations. Office equipment and leasehold improvements are stated at cost net of accumulated depreciation and amortization in the consolidated statements of financial condition. Fixed assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Aircraft Engines Held for Operating Lease Aircraft engines held for operating lease are stated at cost, less accumulated depreciation and are included in fixed assets, net in the consolidated statements of financial condition. Certain costs incurred in connection with the acquisition of aircraft engines are capitalized as part of the cost of such assets. Major overhauls paid for by our company, which improve functionality or extend the original useful life, are capitalized and depreciated over the shorter of the estimated period to the next overhaul (“deferral method”) or the remaining useful life of the equipment. We do not accrue for planned major maintenance. The cost of overhauls of aircraft engines under long-term leases, for which the lessee is responsible for maintenance during the period of the lease, are paid for by the lessee or from reimbursable maintenance reserves paid to our company in accordance with the lease, and are not capitalized. We depreciate aircraft engines on a straight-line basis over a 30-year period from the acquisition date to a 15% residual value. We review the useful life and residual values of all engines periodically as demand changes to accurately depreciate the cost of equipment over the useful life of the engines.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill represents the cost of acquired businesses in excess of the fair value of the related net assets acquired. We test goodwill for impairment on an annual basis and on an interim basis when certain events or circumstances exist. We test for impairment at the reporting unit level, which is generally at the level of or one level below our company’s business segments. For both the annual and interim tests, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, we determine it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then performing the two-step impairment test is not required. However, if we conclude otherwise, we are then required to perform the first step of the two-step impairment test. Goodwill impairment is determined by comparing the estimated fair value of a reporting unit with its respective carrying value. If the estimated fair value exceeds the carrying value, goodwill at the reporting unit level is not deemed to be impaired. If the estimated fair value is below carrying value, however, further analysis is required to determine the amount of the impairment. Additionally, if the carrying value of a reporting unit is zero or a negative value and it is determined that it is more likely than not the goodwill is impaired, further analysis is required. The estimated fair values of the reporting units are derived based on valuation techniques we believe market participants would use for each of the reporting units. The Company performed impairment testing on October 1, 2020 with no impairment charges resulting from the annual impairment tests. Identifiable intangible assets, which are amortized over their estimated useful lives, are tested for potential impairment whenever events or changes in circumstances suggest that the carrying value of an asset or asset group may not be fully recoverable.
Loan and Advances to Financial Advisors and Other Employees, Net	Loans and Advances to Financial Advisors and Other Employees, Net We offer transition pay, principally in the form of upfront loans, to financial advisors and certain key revenue producers as part of our company’s overall growth strategy. These loans are generally forgiven by a charge to compensation and benefits over a five- to ten-year period if the individual satisfies certain conditions, usually based on continued employment and certain performance standards. We monitor and compare individual financial advisor production to each loan issued to ensure future recoverability. In the event that the financial advisor is no longer affiliated with us, any unpaid balance of such loan becomes immediately due and payable to us. In determining the allowance for doubtful accounts related to former employees, management primarily considers our historical collection experience as well as other factors, including amounts due at termination, the reasons for the terminated relationship, and the former financial advisor’s overall financial position. When the review of these factors indicates that further collection activity is highly unlikely, the outstanding balance of such loan is written-off and the corresponding allowance is reduced. The aging of this receivable balance is not a determinative factor in computing our allowance for doubtful accounts, as concerns regarding the recoverability of these loans primarily arise in the event that the financial advisor is no longer affiliated with us. We present the outstanding balance of loans to financial advisors on our consolidated statements of financial condition, net of the allowance for doubtful accounts. Our allowance for doubtful accounts was approximately $18.7 million and $14.3 million at December 31, 2020 and 2019, respectively.
Derivative Instruments And Hedging Activities	Derivative Instruments and Hedging Activities We recognize all of our derivative instruments at fair value as either assets or liabilities in the consolidated statements of financial condition. These instruments are recorded in other assets or accounts payable and accrued expenses in the consolidated statements of financial condition and in the operating section of the consolidated statements of cash flows as increases or decreases of other assets and accounts payable and accrued expenses. Our company’s policy is not to offset fair value amounts recognized for derivative instruments and fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral arising from derivative instruments recognized at fair value executed with the same counterparty under master netting arrangements. The accounting for changes in the fair value (i.e., gains and losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and, further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, we must also designate the hedging instrument or transaction, based upon the exposure being hedged. For derivative instruments that are designated and qualify as cash flow hedges (i.e., hedging the exposure to variability in expected future cash flows that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of accumulated other comprehensive income/(loss), net of tax, and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any, is recognized in current earnings during the period of change.
Revenue Recognition	Revenue Recognition Customer securities transactions are recorded on a settlement date basis, with related commission revenues and expenses recorded on a trade date basis. Commission revenues are recorded as the amount charged to the customer, which, in certain cases, may include varying discounts. Principal securities transactions are recorded on a trade date basis. We typically distribute our proprietary equity research products to our client base of institutional investors at no charge. These proprietary equity research products are accounted for as a cost of doing business. 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. Advisory expenses are deferred only to the extent they are explicitly reimbursable by the client and the related revenue has been recognized. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. Underwriting expenses are recognized as non-interest expense in other operating expenses in the consolidated statements of operations, and any expense reimbursements are recognized as investment banking revenues (i.e., expenses are not netted against revenues). Asset management and service 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. We earn fees from the investment partnerships that we manage or of which we are a general partner. Such management fees are generally based on the net assets or committed capital of the underlying partnerships. We have agreed, in certain cases, to waive management fees, in lieu of making a cash contribution, in satisfaction of our general partner investment commitments to the investment partnerships. In these cases, we generally recognize our management fee revenues at the time when we are allocated a special profit interest in realized gains from these partnerships. Lease revenue – Revenue from leasing of aircraft engines is recognized as operating lease revenue on a straight-line basis over the terms of the applicable lease agreements. Under the terms of some of our company’s leases, the lessees pay use fees (also known as maintenance reserves) to our company based on usage of the leased asset, which are designed to cover expected future maintenance costs. Some of these amounts are reimbursable to the lessee if they make specifically defined maintenance expenditures. Use fees received are recognized in revenue as maintenance reserve revenue if they are not reimbursable to the lessee. Use fees that are reimbursable are recorded as a maintenance reserve liability until they are reimbursed to the lessee, the lease terminates, or the obligation to reimburse the lessee for such reserves ceases to exist, at which time they are recognized in revenue as maintenance reserve revenue. 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.
Operating Leases	Operating Leases Our company enters into operating leases for real estate, office equipment, and other assets, substantially all of which are used in connection with its operations. We adopted ASU 2016-02 on January 1, 2019, which required our company to recognize, for leases longer than one year, a right-of-use asset representing the right to use the underlying asset for the lease term, and a lease liability representing the liability to make payments. The lease term is generally determined based on the contractual maturity of the lease. For leases where our company has the option to terminate or extend the lease, an assessment of the likelihood of exercising the option is incorporated into the determination of the lease term. Such assessment is initially performed at the inception of the lease and is updated if events occur that impact the original assessment. An operating lease right-of-use asset is initially determined based on the operating lease liability, adjusted for initial direct costs, lease incentives, and amounts paid at or prior to lease commencement. This amount is then amortized over the lease term. At December 31, 2020, the right-of-use assets are included in fixed assets, net with the corresponding lease liabilities included in accounts payable and accrued expenses in the consolidated statements of financial condition. See Note 19 for information about operating leases. For leases where our company ceased using the space and management has concluded that it will not derive any future economic benefits, we record an impairment of right-of-use assets.
Income Taxes	Income Taxes We compute income taxes using the asset and liability method, under which deferred income taxes are provided for the temporary differences between the financial statement carrying amounts and the tax basis of our company’s assets and liabilities. We establish a valuation allowance for deferred tax assets if it is more likely than not that these items will either expire before we are able to realize their benefits, or that future deductibility is uncertain. We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized in the consolidated financial statements from such a position are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. We recognize interest and penalties related to uncertain tax positions in provision for income taxes in the consolidated statements of operations. See Note 24 for further information regarding income taxes.
Foreign Currency Translation	Foreign Currency Translation We consolidate our foreign subsidiaries, which have designated their local currency as their functional currency. Assets and liabilities of these foreign subsidiaries are translated at year-end rates of exchange. Revenues and expenses are translated at an average rate for the period. Gains or losses resulting from translating foreign currency financial statements are reflected in accumulated other comprehensive income/(loss), a separate component of Stifel Financial Corp. shareholders’ equity. Gains or losses resulting from foreign currency transactions are included in other income in the consolidated statements of operations.
Recently Issued Accounting Guidance	Recently Issued 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. The accounting update is effective for interim and annual periods beginning after December 15, 2020 (January 1, 2021, for our company), and early adoption is permitted. We are currently evaluating the impact that the accounting update will have on our consolidated financial statements.
Recently Adopted Accounting Guidance	Recently Adopted Accounting Guidance Goodwill Impairment Testing On January 1, 2020, we adopted ASU 2017-04, which simplifies the subsequent measurement of goodwill and eliminates Step 2 from the goodwill impairment test. Under the accounting update, the annual, or interim, goodwill impairment test is performed by comparing the fair value of a reporting unit with its carrying amount, and an impairment charge should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The adoption of the accounting update did not have a material impact on our consolidated financial statements. The future impact of the accounting update will depend upon the performance of our reporting units and the market conditions impacting the fair value of each reporting unit going forward. Financial Instruments – Credit Losses On January 1, 2020, we adopted ASU 2016-13 that requires the measurement of the allowance for credit losses to be based on management’s best estimate of lifetime expected credit losses inherent in the Company’s relevant financial assets. Upon adoption of the standard on January 1, 2020, we recorded a $10.4 million increase to the allowance for credit losses. The allowance for credit losses includes both the allowance for loan losses and the reserve for unfunded lending commitments and represents management’s estimate of the expected credit losses in our company’s loan portfolio. The increase in the allowance is driven by the fact that the allowance under the CECL model covers expected credit losses over the full expected life of the loan portfolios and also takes into account forecasts of expected future economic conditions. The cumulative effect of adopting this standard was a decrease to retained earnings of $7.8 million (net of tax). Reference Rate Reform In March 2020, the FASB issued ASU No. 2020-04, “Reference Rate Reform - Fair Value Measurement In August 2018, the FASB issued ASU No. 2018-13, Disclosure Framework - Derivatives and Hedging In August 2017, the FASB issued ASU 2017-12, “Targeted Improvements to Accounting for Hedging Activities” (“ASU 2017-12”), which amends the hedge accounting recognition and presentation requirements. The accounting update improves the transparency and understandability of information conveyed to financial statement users by better aligning companies’ hedging relationship to their existing risk management strategies, simplifies the application of hedge accounting, and increases transparency regarding the scope and results of hedging program. The accounting update is effective for the fiscal year beginning after December 15, 2018 (January 1, 2019, for our company), and early adoption is permitted. The adoption of the accounting update did not have a material impact on our consolidated financial statements. In April 2019, the FASB issued ASU No. 2019-04, “Codification Improvements to Topic 326, Financial Instruments - The accounting update clarifies that the reclassification of a debt security from held-to-maturity to available-for-sale under the transition guidance in ASU 2017-12 would not (1) call into question the classification of other held-to-maturity securities, (2) be required to actually designate any reclassified security in a last-of-layer hedge, or (3) be restricted from selling any reclassified security. The accounting update is effective for fiscal years beginning after December 15, 2019 (January 1, 2020, for our company), and early adoption is permitted. We early adopted the provisions of the accounting update related to Topic 815 on August 1, 2019. As a result of the adoption of the accounting update, we made a one-time decision to transfer a portion of our held-to-maturity securities to available-for-sale. The adoption of the accounting guidance had no other impact on our consolidated financial statements. See Note 7 for further information. Callable debt securities In March 2017, the FASB issued ASU 2017-08, “Receivables - Leases In February 2016, the FASB issued ASU 2016-02, which requires that for leases longer than one year, a lessee recognize in the statements of financial condition a right-of-use asset, representing the right to use the underlying asset for the lease term, and a lease liability, representing the liability to make lease payments. The accounting update also requires that for finance leases, a lessee recognize interest expense on the lease liability, separately from the amortization of the right-of-use asset in the statements of earnings, while for operating leases, such amounts should be recognized as a combined expense. In addition, this accounting update requires expanded disclosures about the nature and terms of lease agreements. This change was applied prospectively from January 1, 2019, and there is no impact on our previously presented results. Upon adoption, in accordance with the new lease standard, we elected to not reassess the lease classification or initial direct costs of existing leases, and to not reassess whether existing contracts contain a lease. In addition, we have elected to account for each contract’s lease and non-lease components as a single lease component. The adoption of the new lease standard resulted in a reduction of beginning retained earnings of $6.7 million after-tax as a cumulative effect of adoption of an accounting change. Upon adoption, the company recorded a gross up of approximately $670 million on its consolidated statements of financial condition to recognize the right-of-use assets, included in fixed assets, net and lease liabilities, included in accounts payable and accrued expenses. See Note 9 for further information. Comprehensive Income In February 2018, the FASB issued ASU 2018-02, “Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” that provides for the reclassification from accumulated other comprehensive income to retained earnings for stranded effects resulting from the Tax Cuts and Jobs Act of 2017. The accounting update is effective for the fiscal year beginning after December 15, 2018 (January 1, 2019, for our company) and early adoption is permitted. We early adopted the guidance in the update on January 1, 2018. The adoption of the accounting update resulted in a reclassification adjustment of $3.1 million related to cash flow hedges and investment portfolio credit risk in our consolidated financial statements.

Receivables From And Payables_2

Receivables From And Payables To Brokers, Dealers And Clearing Organizations (Tables)	12 Months Ended
	Dec. 31, 2020
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 December 31, 2020 and 2019, included (in thousands) December 31, 2020 2019 Deposits paid for securities borrowed $ 313,131 $ 135,373 Receivables from clearing organizations 229,070 471,122 Securities failed to deliver 7,291 21,295 $ 549,492 $ 627,790
Amounts Payable To Brokers, Dealers, And Clearing Organizations	Amounts payable to brokers, dealers, and clearing organizations at December 31, 2020 and 2019, included (in thousands) December 31, 2020 2019 Deposits received from securities loaned $ 145,124 $ 608,333 Payable to clearing organizations 25,540 78,702 Securities failed to receive 7,273 25,256 $ 177,937 $ 712,291

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Schedule Of Fair Value Of Investments In And Unfunded Commitments To Funds Measured At Net Asset Value	December 31, 2020 December 31, 2019 Fair value of investments Unfunded commitments Fair value of investments Unfunded commitments Money market funds $ 34,192 $ — $ 25,734 $ — Mutual funds 7,152 — 7,875 — Partnership interests 3,744 2,520 3,058 953 Private equity funds 1,489 1,203 2,288 1,203 Total $ 46,577 $ 3,723 $ 38,955 $ 2,156
Fair Value Of Assets And Liabilities Measured On Recurring Basis	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) Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities. 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) Includes sovereign debt and state and municipal securities. Assets and liabilities measured at fair value on a recurring basis as of December 31, 2019, are presented below (in thousands) December 31, 2019 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 9,266 $ 9,266 $ — $ — U.S. government agency securities 66,881 — 66,881 — Agency mortgage-backed securities 388,856 — 388,856 — Corporate securities: Fixed income securities 250,783 872 249,911 — Equity securities 64,009 61,579 2,430 — State and municipal securities 137,211 — 137,211 — Other (1) 55,926 — 46,600 9,326 Total financial instruments owned 972,932 71,717 891,889 9,326 Available-for-sale securities: U.S. government agency securities 5,067 — 5,067 — State and municipal securities 24,297 — 24,297 — Mortgage-backed securities: Agency 837,878 — 837,878 — Commercial 109,537 — 109,537 — Non-agency 9,758 — 9,758 — Corporate fixed income securities 675,311 — 675,311 — Asset-backed securities 1,592,889 — 1,592,889 — Total available-for-sale securities 3,254,737 — 3,254,737 — Investments: Corporate equity securities 35,083 34,023 — 1,060 Auction rate securities 14,897 — 470 14,427 Other 16,771 9,905 6,013 853 Investments in funds and partnerships measured at NAV 13,221 Total investments 79,972 43,928 6,483 16,340 Cash equivalents measured at NAV 25,734 Derivative contracts (2) 1,086 — 1,086 — $ 4,334,461 $ 115,645 $ 4,154,195 $ 25,666 (1) Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities. (2) Included in other assets in the consolidated statements of financial condition. December 31, 2019 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 243,570 $ 243,570 $ — $ — Agency mortgage-backed securities 231,909 — 231,909 — Corporate securities: Fixed income securities 140,100 633 139,467 — Equity securities 32,047 32,047 — — Other (2) 15,226 — 14,271 955 Total financial instruments sold, but not yet purchased $ 662,852 $ 276,250 $ 385,647 $ 955 (2) Includes sovereign debt, U.S. government agency securities, and loans.
Schedule Of Changes In Fair Value Associated With Level 3 Financial Instruments	Year Ended December 31, 2020 Financial instruments owned Investments Other Corporate Equity Securities Auction Rate Securities Other Balance at December 31, 2019 $ 9,326 $ 1,060 $ 14,427 $ 853 Unrealized losses (3,126 ) — (1,494 ) (296 ) Realized losses (1) (71 ) — — — Purchases 25,852 — — — Sales (20,000 ) — — (20 ) Redemptions (697 ) — — — Transfers: Into Level 3 — — — 41,576 Out of Level 3 — (1,060 ) — — Net change 1,958 (1,060 ) (1,494 ) 41,260 Balance at December 31, 2020 $ 11,284 $ — $ 12,933 $ 42,113 (1) Realized and unrealized losses related to financial instruments owned and investments are reported in other income in the consolidated statements of operations. The following table summarizes the changes in fair value associated with Level 3 financial instruments during the year ended December 31, 2019 (in thousands) Year Ended December 31, 2019 Financial instruments owned Investments Other Corporate Equity Securities Auction Rate Securities Other Balance at December 31, 2018 $ 176 $ — $ 17,336 $ 857 Unrealized gains 2 — 261 — Realized gains/(losses) (1) 451 — — — Purchases 24,316 — — — Sales (16,081 ) — — — Redemptions (3 ) — (2,700 ) (4 ) Transfers: Into Level 3 465 1,060 — — Out of Level 3 — — (470 ) — Net change 9,150 1,060 (2,909 ) (4 ) Balance at December 31, 2019 $ 9,326 $ 1,060 $ 14,427 $ 853 (1) Realized and unrealized gains/(losses) related to financial instruments owned and investments are reported in other income in the consolidated statements of operations.
Schedule Of Fair Value Of Financial Instruments	December 31, 2020 December 31, 2019 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Cash and cash equivalents $ 2,279,274 $ 2,279,274 $ 1,142,596 $ 1,142,596 Cash segregated for regulatory purposes 172,932 172,932 131,374 131,374 Securities purchased under agreements to resell 217,930 217,930 385,008 385,008 Financial instruments owned 694,028 694,028 972,932 972,932 Available-for-sale securities 2,230,297 2,230,297 3,254,737 3,254,737 Held-to-maturity securities 4,117,384 4,107,960 2,856,219 2,827,883 Bank loans 11,006,760 11,088,058 9,624,042 9,801,986 Loans held for sale 551,248 551,248 389,693 389,693 Investments 113,862 113,862 79,972 79,972 Derivative contracts (1) — — 1,086 1,086 Financial liabilities: Securities sold under agreements to repurchase $ 190,955 $ 190,955 $ 391,634 $ 391,634 Bank deposits 17,396,497 17,192,722 15,332,581 14,467,894 Financial instruments sold, but not yet purchased 437,978 437,978 662,852 662,852 Federal Home Loan Bank advances — — 250,000 250,000 Senior notes 1,112,409 1,265,669 1,017,010 1,069,425 Debentures to Stifel Financial Capital Trusts 60,000 41,071 60,000 45,847 (1)
Estimated Fair Values Of Financial Instruments Not Measured At Fair Value	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 December 31, 2019 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 1,116,862 $ 1,116,862 $ — $ — Cash segregated for regulatory purposes 131,374 131,374 — — Securities purchased under agreements to resell 385,008 342,132 42,876 — Held-to-maturity securities 2,827,883 — 2,666,773 161,110 Bank loans 9,801,986 — 9,801,986 — Loans held for sale 389,693 — 389,693 — Financial liabilities: Securities sold under agreements to repurchase $ 391,634 $ 22,205 $ 369,429 $ — Bank deposits 14,467,894 — 14,467,894 — Federal Home Loan Bank advances 250,000 250,000 — — Senior notes 1,069,425 1,069,425 — — Debentures to Stifel Financial Capital Trusts 45,847 — — 45,847

Financial Instruments Owned A_2

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Tables)	12 Months Ended
	Dec. 31, 2020
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 December 31, 2020 and 2019, are as follows (in thousands) December 31, 2020 2019 Financial instruments owned: U.S. government securities $ 46,900 $ 9,266 U.S. government agency securities 56,450 66,881 Agency mortgage-backed securities 216,434 388,856 Corporate securities: Fixed income securities 194,575 250,783 Equity securities 67,593 64,009 State and municipal securities 96,150 137,211 Other (1) 15,926 55,926 $ 694,028 $ 972,932 Financial instruments sold, but not yet purchased: U.S. government securities $ 91,974 $ 243,570 Agency mortgage-backed securities 141,227 231,909 Corporate securities: Fixed income securities 162,626 140,100 Equity securities 30,848 32,047 Other (2) 11,303 15,226 $ 437,978 $ 662,852 (1) Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities. (2) Includes sovereign debt, U.S. government agency securities, loans, and state and municipal securities.

Available-For-Sale And Held-T_2

Available-For-Sale And Held-To-Maturity Securities (Tables)	12 Months Ended
	Dec. 31, 2020
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 December 31, 2020 and 2019 (in thousands) December 31, 2020 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) 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 December 31, 2019 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Fair Value Available-for-sale securities U.S. government agency securities $ 5,028 $ 39 $ — $ 5,067 State and municipal securities 24,198 99 — 24,297 Mortgage-backed securities: Agency 840,659 3,070 (5,851 ) 837,878 Commercial 109,982 269 (714 ) 109,537 Non-agency 9,731 50 (23 ) 9,758 Corporate fixed income securities 664,028 11,283 — 675,311 Asset-backed securities 1,600,415 679 (8,205 ) 1,592,889 $ 3,254,041 $ 15,489 $ (14,793 ) $ 3,254,737 Held-to-maturity securities (2) Asset-backed securities 2,856,219 5,960 (34,296 ) 2,827,883 (1) Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive income/(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 (in thousands) December 31, 2020 December 31, 2019 Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale securities Within one year $ 143,462 $ 144,362 $ 6,861 $ 6,871 After one year through three years 134,040 137,625 229,184 229,760 After three years through five years 247,907 266,139 422,236 429,909 After five years through ten years 429,921 435,111 409,664 411,680 After ten years 1,229,009 1,247,060 2,186,096 2,176,517 $ 2,184,339 $ 2,230,297 $ 3,254,041 $ 3,254,737 Held-to-maturity securities After three years through five years 17,460 17,460 — — After five years through ten years 1,932,439 1,926,425 598,250 597,166 After ten years 2,167,485 2,164,075 2,257,969 2,230,717 $ 4,117,384 $ 4,107,960 $ 2,856,219 $ 2,827,883
Contractual Maturities	The maturities of our available-for-sale (fair value) and held-to-maturity (amortized cost) securities at December 31, 2020, 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 $ 2,518 $ 1,843 $ — $ — $ 4,361 State and municipal securities — — 2,453 — 2,453 Mortgage-backed securities: Agency 3 355 86,324 706,728 793,410 Commercial 16,602 16 — 78,995 95,613 Non-agency 3,841 — — 728 4,569 Corporate fixed income securities 121,398 401,550 108,810 — 631,758 Asset-backed securities — — 237,524 460,609 698,133 $ 144,362 $ 403,764 $ 435,111 $ 1,247,060 $ 2,230,297 Held-to-maturity securities Asset-backed securities $ — $ 17,460 $ 1,932,439 $ 2,167,485 $ 4,117,384 (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 December 31, 2020 (in thousands) Less than 12 months 12 months or more Total Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Available-for-sale securities Mortgage-backed securities: Agency $ (16 ) $ 10,254 $ — $ — $ (16 ) $ 10,254 Non-agency — — (9 ) 728 (9 ) 728 Asset-backed securities (2,132 ) 155,011 (3,434 ) 358,154 (5,566 ) 513,165 $ (2,148 ) $ 165,265 $ (3,443 ) $ 358,882 $ (5,591 ) $ 524,147
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 December 31, 2020 (in thousands) AAA AA A C Total Held-to-maturity securities Asset-backed securities $ 1,141,171 $ 2,958,169 $ 15,500 $ 2,544 $ 4,117,384

Bank Loans (Tables)

Bank Loans (Tables)	12 Months Ended
	Dec. 31, 2020
Receivables [Abstract]
Schedule Of Balance And Associated Percentage Of Each Major Loan Category In Bank Loan Portfolio	December 31, 2020 December 31, 2019 Balance Percent Balance Percent Commercial and industrial $ 4,296,089 38.5 % $ 3,438,953 35.3 % Residential real estate 3,956,670 35.4 3,309,548 33.9 Securities-based loans 1,933,974 17.3 2,098,211 21.5 Construction and land 501,681 4.5 398,839 4.1 Commercial real estate 366,485 3.3 428,549 4.4 Home equity lines of credit 75,507 0.7 51,205 0.5 Other 40,407 0.3 27,311 0.3 Gross bank loans 11,170,813 100.0 % 9,752,616 100.0 % Unamortized loan discount, net (1,822 ) (6,588 ) Loans in process (48,222 ) (27,717 ) Unamortized loan fees, net (1,980 ) 1,310 Allowance for loan losses (112,029 ) (95,579 ) Loans held for investment, net $ 11,006,760 $ 9,624,042
Activity In The Allowance For Loan Losses By Portfolio Segment	Year Ended December 31, 2020 Beginning Balance CECL Adoption Provision Charge- offs Recoveries Ending Balance Commercial and industrial $ 69,949 $ (19,940 ) $ 17,341 $ (153 ) $ 25 $ 67,222 Construction and land 4,613 2,674 9,988 — — 17,275 Residential real estate 14,253 3,499 (1,452 ) — — 16,300 Commercial real estate 3,564 791 4,225 — — 8,580 Securities-based loans 2,361 1,346 (1,692 ) — — 2,015 Home equity lines of credit 442 39 (195 ) — 88 374 Other 397 (145 ) 49 (40 ) 2 263 $ 95,579 $ (11,736 ) $ 28,264 $ (193 ) $ 115 $ 112,029 Year Ended December 31, 2019 Beginning Balance Provision Charge- offs Recoveries Ending Balance Commercial and industrial $ 68,367 $ 1,821 $ (239 ) $ — $ 69,949 Residential real estate 11,228 2,974 (41 ) 92 14,253 Construction and land 1,241 3,372 — — 4,613 Commercial real estate 1,778 1,786 — — 3,564 Securities-based loans 1,978 383 — — 2,361 Home equity lines of credit 310 129 — 3 442 Other 931 (488 ) (106 ) 60 397 $ 85,833 $ 9,977 $ (386 ) $ 155 $ 95,579
Recorded Balances Of Loans And Amount Of Allowance Allocated Based Upon Impairment Method By Portfolio Segment	Allowance for Loan Losses Recorded Investment in Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Commercial and industrial $ 8,158 $ 59,064 $ 67,222 $ 12,251 $ 4,283,838 $ 4,296,089 Residential real estate 24 16,276 16,300 1,407 3,955,263 3,956,670 Securities-based loans — 2,015 2,015 — 1,933,974 1,933,974 Construction and land — 17,275 17,275 — 501,681 501,681 Commercial real estate — 8,580 8,580 144 366,341 366,485 Home equity lines of credit — 374 374 — 75,507 75,507 Other — 263 263 — 40,407 40,407 $ 8,182 $ 103,847 $ 112,029 $ 13,802 $ 11,157,011 $ 11,170,813 Allowance for Loan Losses Recorded Investment in Loans Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Individually Evaluated for Impairment Collectively Evaluated for Impairment Total Commercial and industrial $ 8,158 $ 61,791 $ 69,949 $ 12,991 $ 3,425,962 $ 3,438,953 Residential real estate 24 14,229 14,253 1,412 3,308,136 3,309,548 Securities-based loans — 2,361 2,361 — 2,098,211 2,098,211 Commercial real estate — 3,564 3,564 — 428,549 428,549 Construction and land — 4,613 4,613 — 398,839 398,839 Home equity lines of credit — 442 442 184 51,021 51,205 Other — 397 397 — 27,311 27,311 $ 8,182 $ 87,397 $ 95,579 $ 14,587 $ 9,738,029 $ 9,752,616
Loans That Were Individually Evaluated For Impairment By Portfolio Segment	December 31, 2020 Unpaid Contractual Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial and industrial $ 12,251 $ 14 $ 12,237 $ 12,251 $ 8,158 $ 12,954 Residential real estate 1,407 1,249 158 1,407 24 1,410 Commercial real estate 144 144 — 144 — 145 Other 150 — — — — — Total $ 13,952 $ 1,407 $ 12,395 $ 13,802 $ 8,182 $ 14,509 December 31, 2019 Unpaid Contractual Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial and industrial $ 12,991 $ 51 $ 12,940 $ 12,991 $ 8,158 $ 14,172 Residential real estate 1,412 1,412 — 1,412 24 1,231 Home equity lines of credit 184 184 — 184 — 184 Other 150 — — — — — Total $ 14,737 $ 1,647 $ 12,940 $ 14,587 $ 8,182 $ 15,587
Aging Of The Recorded Investment In Past Due Loans	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 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. December 31, 2019 30 - 89 Days Past Due 90 or More Days Past Due Total Past Due Current Balance Total Commercial and industrial $ — $ 12,940 $ 12,940 $ 3,426,013 3,438,953 Residential real estate 10,476 1,249 11,725 3,297,823 3,309,548 Securities-based loans — — — 2,098,211 2,098,211 Commercial real estate — — — 428,549 428,549 Construction and land — — — 398,839 398,839 Home equity lines of credit 83 184 267 50,938 51,205 Other 5 — 5 27,306 27,311 Total $ 10,564 $ 14,373 $ 24,937 $ 9,727,679 $ 9,752,616 December 31, 2019 * Non-accrual Restructured Total Commercial and industrial $ 12,940 $ — $ 12,940 Residential real estate 1,249 163 1,412 Home equity lines of credit 184 — 184 Total $ 14,373 $ 163 $ 14,536 * There were no loans past due 90 days and still accruing interest at December 31, 2019.
Risk Category Of Loan Portfolio	December 31, 2020 Pass Special Mention 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 December 31, 2019 Pass Special Mention Substandard Doubtful Total Commercial and industrial $ 3,365,800 $ 48,241 $ 11,972 $ 12,940 $ 3,438,953 Residential real estate 3,307,719 417 1,412 — 3,309,548 Securities-based loans 2,098,211 — — — 2,098,211 Commercial real estate 427,963 586 — — 428,549 Construction and land 398,839 — — — 398,839 Home equity lines of credit 51,021 — 184 — 51,205 Other 27,311 — — — 27,311 Total $ 9,676,864 $ 49,244 $ 13,568 $ 12,940 $ 9,752,616
Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis	Term Loans Amortized Cost Basis by Origination Year – December 31, 2020 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Commercial and industrial: Pass $ 828,098 $ 519,723 $ 743,440 $ 332,986 $ 204,369 $ 297,288 $ 1,069,447 $ 3,995,351 Special Mention 500 239 35,602 57,708 — 4,200 7,510 105,759 Substandard 19,395 34,772 65,801 48,647 7,777 — 6,336 182,728 Doubtful — — — 12,237 — 14 — 12,251 $ 847,993 $ 554,734 $ 844,843 $ 451,578 $ 212,146 $ 301,502 $ 1,083,293 $ 4,296,089 Residential real estate: Pass $ 1,600,107 $ 896,190 $ 375,252 $ 302,524 $ 272,101 $ 509,247 $ — $ 3,955,421 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — 149 — 1,100 — 1,249 $ 1,600,107 $ 896,190 $ 375,252 $ 302,673 $ 272,101 $ 510,347 $ — $ 3,956,670 Securities-based loans: Pass $ 25,563 $ 104,011 $ 294 $ 140 $ 300 $ 16,716 $ 1,786,950 $ 1,933,974 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ 25,563 $ 104,011 $ 294 $ 140 $ 300 $ 16,716 $ 1,786,950 $ 1,933,974 Construction and land: Pass $ 68,392 $ 206,085 $ 119,416 $ 61,289 $ 6,450 $ 1,355 $ 4,454 $ 467,441 Special Mention — — 14,240 — — — — 14,240 Substandard — — 20,000 — — — — 20,000 Doubtful — — — — — — — — $ 68,392 $ 206,085 $ 153,656 $ 61,289 $ 6,450 $ 1,355 $ 4,454 $ 501,681 Commercial real estate: Pass $ 77,792 $ 151,805 $ 38,744 $ 45,275 $ 4,007 $ 37,903 $ 482 $ 356,008 Special Mention — — — — 10,333 — — 10,333 Substandard — — — — — — — — Doubtful — — 144 — — — — 144 $ 77,792 $ 151,805 $ 38,888 $ 45,275 $ 14,340 $ 37,903 $ 482 $ 366,485 Home equity lines of credit: Pass $ — $ — $ — $ — $ — $ — $ 75,507 $ 75,507 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ — $ — $ — $ — $ — $ 75,507 $ 75,507 Other: Pass $ — $ — $ 5 $ — $ 503 $ 197 $ 39,702 $ 40,407 Special Mention — — — — — — — — Substandard — — — — — — — — Doubtful — — — — — — — — $ — $ — $ 5 $ — $ 503 $ 197 $ 39,702 $ 40,407

Fixed Assets (Tables)

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Property Plant And Equipment [Abstract]
Summary Of Fixed Assets	The following is a summary of fixed assets as of December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 Office equipment $ 323,841 $ 288,975 Leasehold improvements 105,187 120,570 Building 62,803 58,804 Aircraft engine operating leases — 206,315 491,831 674,664 Accumulated depreciation and amortization (323,916 ) (292,499 ) $ 167,915 $ 382,165

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
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, 2019 Net Adjustments Sale of ZCM December 31, 2020 Goodwill Global Wealth Management $ 344,981 $ — $ (9,972 ) $ 335,009 Institutional Group 849,093 (2,104 ) — 846,989 $ 1,194,074 $ (2,104 ) $ (9,972 ) $ 1,181,998 December 31, 2019 Adjustments/ Sale of ZCM Amortization December 31, 2020 Intangible assets Global Wealth Management $ 53,279 $ (1,532 ) $ (7,076 ) $ 44,671 Institutional Group 108,494 363 (12,544 ) 96,313 $ 161,773 $ (1,169 ) $ (19,620 ) $ 140,984
Intangible Assets	Intangible assets as of December 31, 2020 and 2019, were as follows (in thousands) December 31, 2020 December 31, 2019 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Customer relationships $ 202,342 $ 85,152 $ 207,253 $ 75,987 Trade names 28,659 15,660 28,659 13,649 Non-compete agreements 9,240 4,229 9,490 2,828 Core deposits 8,615 4,809 8,615 2,985 Investment banking backlog 4,245 2,734 4,245 1,787 Acquired technology 840 373 840 93 $ 253,941 $ 112,957 $ 259,102 $ 97,329
Amortization Expense In Future Periods	As of December 31, 2020, we expect amortization expense in future periods to be as follows (in thousands) Fiscal year 2021 $ 17,806 2022 16,454 2023 14,601 2024 13,886 2025 11,826 Thereafter 64,293 $ 138,866

Senior Notes (Tables)

Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Senior Notes	The following table summarizes our senior notes as of December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 4.25% senior notes, due 2024 (1) $ 500,000 $ 500,000 4.00% senior notes, due 2030 (2) 400,000 — 5.20% senior notes, due 2047 (3) 225,000 225,000 3.50% senior notes, due 2020 (4) — 300,000 1,125,000 1,025,000 Debt issuance costs, net (12,591 ) (7,990 ) Senior notes, net $ 1,112,409 $ 1,017,010 ( 1) In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.250% 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 (4) In December 2015, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 3.50% senior notes due December 2020
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)	12 Months Ended
	Dec. 31, 2020
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 December 31, 2020 and 2019, were as follows (in thousands) December 31, 2020 2019 Demand deposits (interest-bearing) $ 16,886,953 $ 14,643,966 Demand deposits (non-interest-bearing) 411,890 165,657 Certificates of deposit 97,654 522,958 $ 17,396,497 $ 15,332,581
Schedule of Maturities of Certificates of Deposit	Scheduled maturities of certificates of deposit at December 31, 2020 and 2019, were as follows (in thousands) December 31, 2020 2019 Certificates of deposit, less than $100,000: Within one year $ 2,719 $ 5,305 One to three years 409 360 Three to five years 254 13 $ 3,382 $ 5,678 Certificates of deposit, $100,000 and greater: Within one year $ 63,650 $ 441,341 One to three years 30,622 68,855 Three to five years — 7,084 94,272 517,280 $ 97,654 $ 522,958

Debentures To Stifel Financia_2

Debentures To Stifel Financial Capital Trusts (Tables)	12 Months Ended
	Dec. 31, 2020
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust [Abstract]
Debentures To Stifel Financial Capital Trusts	The following table summarizes our debentures to Stifel Financial Capital Trusts as of December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 Debenture to Stifel Financial Capital Trust II (1) $ 20,000 $ 20,000 Debenture to Stifel Financial Capital Trust III (2) 35,000 35,000 Debenture to Stifel Financial Capital Trust IV (3) 5,000 5,000 $ 60,000 $ 60,000 (1) On August 12, 2005, we completed a private placement of $35.0 million of 6.38% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust II (the “Trust II”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on September 30, 2035, but may be redeemed by our company, and in turn, the Trust II would call the debenture beginning September 30, 2010. The Trust II requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.70% per annum. During 2016, we extinguished $15.0 million of the Trust II debentures. (2) On March 30, 2007, we completed a private placement of $35.0 million of 6.79% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust III (the “Trust III”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on June 6, 2037, but may be redeemed by our company, and in turn, Trust III would call the debenture beginning June 6, 2012. Trust III requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.85% per annum. (3) On June 28, 2007, we completed a private placement of $35.0 million of 6.78% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust IV (the “Trust IV”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on September 6, 2037, but may be redeemed by our company, and in turn, Trust IV would call the debenture beginning September 6, 2012. Trust IV requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.85% per annum.

Disclosures About Offsetting _2

Disclosures About Offsetting Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2020
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 December 31, 2020 and 2019 (in thousands) Gross amounts not offset in the Statement of Financial Condition Gross Amounts of Recognized Assets Gross Amounts Offset in the of Financial Condition Net Amounts Presented in the Statement of Financial Condition Amounts available for offset Available collateral Net Amount As of December 31, 2020: Securities borrowing (1) $ 313,131 $ — $ 313,131 $ (46,183 ) $ (244,578 ) $ 22,370 Reverse repurchase agreements (2) 217,930 — 217,930 (17,992 ) (199,110 ) 828 $ 531,061 $ — $ 531,061 $ (64,175 ) $ (443,688 ) $ 23,198 As of December 31, 2019: Securities borrowing (1) $ 135,373 $ — $ 135,373 $ (52,319 ) $ (74,760 ) $ 8,294 Reverse repurchase agreements (2) 385,008 — 385,008 (59,892 ) (325,096 ) 20 Cash flow interest rate contracts 1,086 — 1,086 — — 1,086 $ 521,467 $ — $ 521,467 $ (112,211 ) $ (399,856 ) $ 9,400 (1) Securities borrowing transactions are included in receivables from brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 4 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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, 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 December 31, 2020 and 2019 (in thousands) Gross amounts not offset in the Statement of Financial Condition Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Financial Condition Net Amounts Presented in the Statement of Financial Condition Amounts available for offset Collateral Pledged Net Amount As of December 31, 2020: Securities lending (3) $ (145,124 ) $ — $ (145,124 ) $ 46,183 $ 98,925 $ (16 ) Repurchase agreements (4) (190,955 ) — (190,955 ) 17,992 172,963 — $ (336,079 ) $ — $ (336,079 ) $ 64,175 $ 271,888 $ (16 ) As of December 31, 2019: Securities lending (3) $ (608,333 ) $ — $ (608,333 ) $ 52,319 $ 555,782 $ (232 ) Repurchase agreements (4) (391,634 ) — (391,634 ) 59,892 331,742 — $ (999,967 ) $ — $ (999,967 ) $ 112,211 $ 887,524 $ (232 ) (3) Securities lending transactions are included in payables to brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 4 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 counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	12 Months Ended
	Dec. 31, 2020
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 $ 2,391,296 16.5 % $ 652,042 4.5 % $ 941,839 6.5 % Tier 1 capital 2,926,296 20.2 % 869,390 6.0 % 1,159,186 8.0 % Total capital 3,080,234 21.3 % 1,159,186 8.0 % 1,448,983 10.0 % Tier 1 leverage 2,926,296 11.9 % 984,215 4.0 % 1,230,269 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 $ 1,029,659 11.4 % $ 404,757 4.5 % $ 584,648 6.5 % Tier 1 capital 1,029,659 11.4 % 539,675 6.0 % 719,567 8.0 % Total capital 1,142,093 12.7 % 719,567 8.0 % 899,459 10.0 % Tier 1 leverage 1,029,659 7.1 % 576,387 4.0 % 720,483 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 $ 209,795 16.5 % $ 57,122 4.5 % $ 82,510 6.5 % Tier 1 capital 209,795 16.5 % 76,163 6.0 % 101,550 8.0 % Total capital 224,281 17.7 % 101,550 8.0 % 126,938 10.0 % Tier 1 leverage 209,795 7.3 % 114,655 4.0 % 143,319 5.0 %

Operating Leases (Tables)

Operating Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Lessee Disclosure [Abstract]
Schedule of Net Lease Cost	The table below summarizes our net lease cost for the years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 2019 Operating lease cost $ 102,595 $ 90,354 Short-term lease cost 502 1,479 Variable lease cost 68 79 Sublease income (3,894 ) (4,761 ) Net lease cost $ 99,271 $ 87,151 The table below summarizes other information related to our operating leases as of and for the year ended December 31, 2020 (in thousands) Operating lease cash flows $ 89,122 Right-of-use assets obtained in exchange for new operating lease liabilities $ 215,662 Weighted average remaining lease term 12.3 years Weighted average discount rate 4.23 %
Schedule of Information About Operating Lease Liabilities	The table below presents information about operating lease liabilities as of December 31, 2020, (in thousands, except percentages) 2021 $ 93,544 2022 96,278 2023 95,359 2024 94,249 2025 93,040 Thereafter 611,933 Total undiscounted lease payments 1,084,403 Imputed interest (244,597 ) Total operating lease liabilities $ 839,806

Revenues From Contracts With _2

Revenues From Contracts With Customers (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Schedule of Total Revenues Separated between 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 years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 2019 Revenues from contracts with customers: Commissions $ 760,627 $ 667,494 Investment banking 952,308 817,421 Asset management and service fees 917,424 848,035 Other 48,529 19,287 Total revenue from contracts with customers 2,678,888 2,352,237 Other sources of revenue: Interest 523,832 724,882 Principal transactions 588,303 404,751 Other 26,816 33,091 Total revenues $ 3,817,839 $ 3,514,961
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 years ended December 31, 2020 and 2019 (in thousands) Year Ended December 31, 2020 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 513,247 $ 247,380 $ — $ 760,627 Capital raising (1) 36,005 488,152 — 524,157 Advisory fees (1) 19 428,132 — 428,151 Investment banking 36,024 916,284 — 952,308 Asset management 917,353 71 — 917,424 Other 45,438 — 3,091 48,529 Total 1,512,062 1,163,735 3,091 2,678,888 Primary Geographic Region: United States 1,512,062 940,272 3,091 2,455,425 United Kingdom — 143,960 — 143,960 Other — 79,503 — 79,503 $ 1,512,062 $ 1,163,735 $ 3,091 $ 2,678,888 (1 ) Year Ended December 31, 2019 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 477,401 $ 190,093 $ — $ 667,494 Capital raising 37,915 331,527 — 369,442 Advisory fees — 447,979 — 447,979 Investment banking 37,915 779,506 — 817,421 Asset management 847,977 58 — 848,035 Other 16,437 — 2,850 19,287 Total 1,379,730 969,657 2,850 2,352,237 Primary Geographic Region: United States 1,379,730 822,758 2,850 2,205,338 United Kingdom — 135,529 — 135,529 Other — 11,370 — 11,370 $ 1,379,730 $ 969,657 $ 2,850 $ 2,352,237

Interest Income and Interest _2

Interest Income and Interest Expense (Tables)	12 Months Ended
	Dec. 31, 2020
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) Year Ended December 31, 2020 2019 2018 Interest income: Loans held for investment, net $ 331,813 $ 379,848 $ 300,541 Investment securities 149,915 231,021 252,200 Margin balances 28,155 52,008 49,515 Financial instruments owned 12,594 23,528 21,407 Other 1,355 38,477 22,786 $ 523,832 $ 724,882 $ 646,449 Interest expense: Senior notes $ 54,063 $ 44,507 $ 44,610 Bank deposits 14,550 95,813 82,256 Federal Home Loan Bank advances 3,667 7,872 15,173 Other (6,502 ) 29,739 28,037 $ 65,778 $ 177,931 $ 170,076

Employee Incentive, Deferred _2

Employee Incentive, Deferred Compensation, And Retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2020
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]
Unvested Stock Award Activity	Weighted-average grant date fair value Unvested December 31, 2019 20,203 $ 31.89 Granted 3,683 34.67 Vested (5,464 ) 27.69 Cancelled (493 ) 36.33 Unvested December 31, 2020 17,929 $ 33.61

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Provision For Income Taxes/(Benefit)	The provision for income taxes consists of the following (in thousands) Year Ended December 31, 2020 2019 2018 Current taxes: Federal $ 143,859 $ 123,802 $ 89,971 State 42,705 30,464 36,070 Foreign (236 ) 1,684 99 186,328 155,950 126,140 Deferred taxes: Federal (31,019 ) (7,027 ) 11,932 State (5,803 ) 4,266 2,267 Foreign (1,818 ) (4,037 ) 55 (38,640 ) (6,798 ) 14,254 Provision for income taxes $ 147,688 $ 149,152 $ 140,394
Reconciliation Of The Statutory Federal Income Tax With The Company's Effective Tax Rate	Reconciliation of the statutory federal income tax rate with our company’s effective income tax rate is as follows (in thousands) Year Ended December 31, 2020 2019 2018 Statutory rate $ 136,744 $ 125,485 $ 112,215 State income taxes, net of federal income tax 27,934 28,333 30,762 Change in uncertain tax position 666 2,661 (617 ) Foreign tax rate difference (2,032 ) (629 ) (318 ) Excess tax benefit from stock-based compensation (21,605 ) (9,670 ) (3,700 ) Revaluation of deferred tax assets — — (3,006 ) Other, net 5,981 2,972 5,058 $ 147,688 $ 149,152 $ 140,394
Deferred Tax Assets And Liabilities	Tax effect of temporary differences and carryforwards that comprise significant portions of deferred tax assets and liabilities (in thousands) December 31, 2020 2019 Deferred tax assets: Lease liabilities $ 211,524 $ 181,607 Deferred compensation 79,068 80,389 Accrued expenses 73,835 26,166 Receivable reserves 41,963 33,199 Net operating loss carryforwards 32,727 28,781 Other 3,311 3,210 Total deferred tax assets 442,428 353,352 Valuation allowance (11,740 ) (5,042 ) 430,688 348,310 Deferred tax liabilities: Lease ROU asset (210,670 ) (180,598 ) Goodwill and other intangibles (51,189 ) (46,625 ) Depreciation (15,371 ) (7,231 ) Unrealized gain on investments (11,585 ) (5,619 ) Prepaid expenses (5,396 ) (3,857 ) (294,211 ) (243,930 ) Net deferred tax asset $ 136,477 $ 104,380
Unrecognized Tax Benefits	The following table summarizes the activity related to our company’s unrecognized tax benefits from January 1, 2018 to December 31, 2020 (in thousands) Year Ended December 31, 2020 2019 2018 Beginning balance $ 3,387 $ 312 $ 3,180 Increase related to prior year tax positions 977 2,173 4 Decrease related to prior year tax positions (11 ) (54 ) (33 ) Increase related to current year tax positions 790 956 191 Decrease related to settlements with taxing authorities (1,181 ) — (3,030 ) Ending balance $ 3,962 $ 3,387 $ 312

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Schedule Of Operating Information, Segment	Information concerning operations in these segments of business for the years ended December 31, 2020, 2019, and 2018, is as follows (in thousands) Year Ended December 31, 2020 2019 2018 Net revenues: (1) Global Wealth Management $ 2,190,826 $ 2,130,559 $ 1,990,319 Institutional Group 1,583,147 1,214,017 1,055,495 Other (21,912 ) (7,546 ) (20,933 ) $ 3,752,061 $ 3,337,030 $ 3,024,881 Income/(loss) before income taxes: Global Wealth Management $ 725,884 $ 785,960 $ 737,003 Institutional Group 325,285 175,670 157,051 Other (400,009 ) (362,492 ) (359,692 ) $ 651,160 $ 599,138 $ 534,362 (1) No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2020, 2019, and 2018.
Schedule Of Information Of Total Assets On Segment Basis	The following table presents our company’s total assets on a segment basis at December 31, 2020 and 2019 (in thousands) December 31, 2020 2019 Global Wealth Management $ 21,743,202 $ 20,675,580 Institutional Group 3,733,661 3,668,723 Other 1,127,391 265,922 $ 26,604,254 $ 24,610,225
Schedule Of Net Revenues Earned On Major Geographical Areas	Revenues, classified by the major geographic areas in which they were earned for the years ended December 31, 2020, 2019, and 2018, were as follows (in thousands): Year Ended December 31, 2020 2019 2018 United States $ 3,460,930 $ 3,154,285 $ 2,855,955 United Kingdom 197,859 163,552 156,557 Other 93,272 19,193 12,369 $ 3,752,061 $ 3,337,030 $ 3,024,881

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2020
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 years ended December 31, 2020, 2019, and 2018 (in thousands, except per share data) Year Ended December 31, 2020 2019 2018 Net income applicable to Stifel Financial Corp. $ 503,472 $ 448,396 $ 393,968 Preferred dividends 27,261 17,319 9,375 Net income available to common shareholders $ 476,211 $ 431,077 $ 384,593 Shares for basic and diluted calculation: Average shares used in basic computation 106,174 107,997 107,679 Dilutive effect of stock options and units (1) 8,399 9,881 14,303 Average shares used in diluted computation 114,573 117,878 121,982 Earnings per common share: Basic $ 4.49 $ 3.99 $ 3.57 Diluted $ 4.16 $ 3.66 $ 3.15 (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. Diluted earnings per share include stock options and units.

Quarterly Financial Informati_2

Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (Unaudited)	Year Ended December 31, 2020 ($ in thousands, except per share amounts) 1 st 2 nd 3 rd 4 th Operating revenues $ 776,214 $ 780,533 $ 782,711 $ 954,549 Interest revenue 161,177 128,368 114,411 119,876 Total revenues 937,391 908,901 897,122 1,074,425 Interest expense 24,357 13,084 13,822 14,515 Net revenues 913,034 895,817 883,300 1,059,910 Total non-interest expenses 797,928 752,857 724,907 825,209 Income before income tax expense 115,106 142,960 158,393 234,701 Provision for income taxes 28,517 35,073 37,866 46,232 Net income 86,589 107,887 120,527 188,469 Preferred dividends 4,844 4,843 9,897 7,677 Net income available to common shareholders $ 81,745 $ 103,044 $ 110,630 $ 180,792 Earnings per common share: Basic $ 0.76 $ 0.97 $ 1.04 $ 1.70 Diluted $ 0.71 $ 0.92 $ 0.97 $ 1.55 Cash dividends declared per common share $ 0.11 $ 0.11 $ 0.11 $ 0.11 Weighted-average number of common shares outstanding: Basic 106,929 105,791 105,941 106,041 Diluted 114,929 111,581 113,775 116,828 Year Ended December 31, 2019 ($ in thousands, except per share amounts) 1 st 2 nd 3 rd 4 th Operating revenues $ 628,797 $ 665,738 $ 686,932 $ 808,612 Interest revenue 191,071 187,940 178,784 167,087 Total revenues 819,868 853,678 865,716 975,699 Interest expense 49,448 52,891 44,144 31,448 Net revenues 770,420 800,787 821,572 944,251 Total non-interest expenses 632,611 652,805 670,818 781,658 Income before income tax expense 137,809 147,982 150,754 162,593 Provision for income taxes 38,370 38,225 40,632 31,925 Net income 99,439 109,757 110,122 130,668 Net income/(loss) applicable to non-controlling interests 232 672 708 (22 ) Net income applicable to Stifel Financial Corp. 99,207 109,085 109,414 130,690 Preferred dividends 2,344 5,288 4,844 4,843 Net income available to common shareholders $ 96,863 $ 103,797 $ 104,570 $ 125,847 Earnings per common share: Basic $ 0.90 $ 0.95 $ 0.98 $ 1.19 Diluted $ 0.82 $ 0.88 $ 0.89 $ 1.08 Cash dividends declared per common share $ 0.10 $ 0.10 $ 0.10 $ 0.10 Weighted-average number of common shares outstanding: Basic 107,550 108,779 106,796 105,705 Diluted 118,815 118,619 117,216 116,720

Nature of Operations And Basi_3

Nature of Operations And Basis of Presentation (Details)	Nov. 11, 2020	Dec. 31, 2020USD ($)	Feb. 07, 2020USD ($)	Dec. 31, 2019
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
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 payable 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
Stifel Credit Facility [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Credit facility		$ 300,000,000
North Shore Aviation Holdings LLC [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent				27.50%
North Shore Aviation Holdings LLC [Member] | Stifel Credit Facility [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Credit facility			$ 120,000,000

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Loan impairment threshold period	90 days
Threshold of reporting unit goodwill carrying value for further analysis	$ 0
Goodwill impairment charges	0
Allowance for doubtful accounts	18,700,000	$ 14,300,000
Incremental payments due upon termination of contract	0
Right-of-use assets	793,200,000	725,800,000
Lease liabilities	839,806,000	$ 766,000,000
ASU 2016-13 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Increase in allowance for credit losses	10,400,000
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative adjustments for accounting changes	7,800,000
Cumulative adjustments for accounting changes	7,800,000
ASU 2017-08 [Member] | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative adjustments for accounting changes			$ 4,400,000
Cumulative adjustments for accounting changes			4,400,000
ASU 2016-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Right-of-use assets			$ 670,000,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]			us-gaap:PropertyPlantAndEquipmentNet
Lease liabilities			$ 670,000,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]			us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
ASU 2016-02 [Member] | Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative adjustments for accounting changes			$ 6,700,000
Cumulative adjustments for accounting changes			$ 6,700,000
ASU 2018-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification adjustment related to cash flow hedges and investment portfolio credit risk	$ 3,100,000
Office Equipment [Member] | Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fixed assets, Useful life	2 years
Office Equipment [Member] | Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fixed assets, Useful life	7 years
Building and Building Improvements [Member] | Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fixed assets, Useful life	3 years
Building and Building Improvements [Member] | Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fixed assets, Useful life	39 years
Aircraft Engines Held for Operating Lease [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fixed assets, Useful life	30 years
Fixed assets, residual value percentage	15.00%

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) - USD ($) $ in Thousands	Dec. 06, 2019	Nov. 01, 2019	Sep. 27, 2019	Sep. 03, 2019	Jul. 01, 2019	Jan. 02, 2019	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill							$ 1,181,998	$ 1,194,074
Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill							846,989	849,093
GMP Capital Inc. [Member]
Business Acquisition [Line Items]
Date of acquisition	Dec. 6, 2019
Payments to Acquire Intangible Assets							10,700
GMP Capital Inc. [Member] | Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill	$ 20,000
MainFirst Bank AG [Member]
Business Acquisition [Line Items]
Date of acquisition		Nov. 1, 2019
MainFirst Bank AG [Member] | Tradename, Non-Compete Agreements and Customer Relationships [Member]
Business Acquisition [Line Items]
Identifiable intangible assets		$ 800
MainFirst Bank AG [Member] | Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill		$ 15,700
George K. Baum & Company [Member]
Business Acquisition [Line Items]
Date of acquisition			Sep. 27, 2019
George K. Baum & Company [Member] | Customer Relationships and Non-Compete Agreements [Member]
Business Acquisition [Line Items]
Identifiable intangible assets			$ 15,200
George K. Baum & Company [Member] | Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill			$ 33,300
B&F Capital Markets, Inc. [Member]
Business Acquisition [Line Items]
Date of acquisition				Sep. 3, 2019
Period of contingent consideration				5 years
Liability for earn-out payments							$ 16,000	20,100
B&F Capital Markets, Inc. [Member] | Tradename, Non-Compete Agreements and Customer Relationships [Member]
Business Acquisition [Line Items]
Identifiable intangible assets				$ 18,600
B&F Capital Markets, Inc. [Member] | Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill				$ 23,000
Mooreland Partners [Member]
Business Acquisition [Line Items]
Date of acquisition					Jul. 1, 2019		Jul. 1, 2019
Period of contingent consideration					3 years
Liability for earn-out payments							$ 13,000	$ 18,400
Mooreland Partners [Member] | Non-Compete Agreements and Backlog [Member]
Business Acquisition [Line Items]
Identifiable intangible assets					$ 5,100
Mooreland Partners [Member] | Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill					$ 45,800
First Empire Holding Corp. [Member]
Business Acquisition [Line Items]
Date of acquisition						Jan. 2, 2019
First Empire Holding Corp. [Member] | Tradename and Customer Relationships [Member]
Business Acquisition [Line Items]
Identifiable intangible assets						$ 7,800
First Empire Holding Corp. [Member] | Institutional Group [Member]
Business Acquisition [Line Items]
Goodwill						$ 14,900

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	Dec. 31, 2020	Dec. 31, 2019
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Deposits paid for securities borrowed	$ 313,131	$ 135,373
Receivables from clearing organizations	229,070	471,122
Securities failed to deliver	7,291	21,295
Receivables from brokers, dealers and clearing organizations, Total	$ 549,492	$ 627,790

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	Dec. 31, 2020	Dec. 31, 2019
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Deposits received from securities loaned	$ 145,124	$ 608,333
Payable to clearing organizations	25,540	78,702
Securities failed to receive	7,273	25,256
Payables to broker, dealers and clearing organizations, Total	$ 177,937	$ 712,291

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	Dec. 31, 2020	Dec. 31, 2019
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	$ 46,577	$ 38,955
Unfunded commitments	3,723	2,156
Money Market Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	34,192	25,734
Mutual Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	7,152	7,875
Private Equity Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	1,489	2,288
Unfunded commitments	1,203	1,203
Partnership Interests [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	3,744	3,058
Unfunded commitments	$ 2,520	$ 953

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		Dec. 31, 2020		Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		$ 694,028		$ 972,932
Available-for-sale securities		2,230,297		3,254,737
Investments		113,862		79,972
Cash equivalents measured at NAV		34,192		25,734
Derivative contracts, Assets	[1]			1,086
Total Assets		3,072,379		4,334,461
Financial instruments sold, but not yet purchased, at fair value		437,978		662,852
U.S. Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		46,900		9,266
Financial instruments sold, but not yet purchased, at fair value		91,974		243,570
U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		56,450		66,881
Available-for-sale securities		4,361		5,067
Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		194,575		250,783
Available-for-sale securities		631,758		675,311
Financial instruments sold, but not yet purchased, at fair value		162,626		140,100
Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		67,593		64,009
Investments		29,496		35,083
Financial instruments sold, but not yet purchased, at fair value		30,848		32,047
State And Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		96,150		137,211
Available-for-sale securities		2,453		24,297
Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		698,133		1,592,889
Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		59,048		16,771
Investments in Funds and Partnerships Measured at NAV [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		12,385		13,221
Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		216,434
Agency Mortgage-Backed Securities [Member] | Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned				388,856
Available-for-sale securities		793,410		837,878
Financial instruments sold, but not yet purchased, at fair value		141,227		231,909
Agency Mortgage-Backed Securities [Member] | Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		95,613		109,537
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		4,569		9,758
Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	[2]	15,926		55,926
Financial instruments sold, but not yet purchased, at fair value		11,303	[3]	15,226	[4]
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		114,353		71,717
Investments		39,838		43,928
Total Assets		154,191		115,645
Financial instruments sold, but not yet purchased, at fair value		126,916		276,250
Level 1 [Member] | U.S. Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		46,900		9,266
Financial instruments sold, but not yet purchased, at fair value		91,974		243,570
Level 1 [Member] | Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		4,474		872
Financial instruments sold, but not yet purchased, at fair value		4,094		633
Level 1 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		62,979		61,579
Investments		29,496		34,023
Financial instruments sold, but not yet purchased, at fair value		30,848		32,047
Level 1 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		10,342		9,905
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		568,391		891,889
Available-for-sale securities		2,230,297		3,254,737
Investments		6,593		6,483
Derivative contracts, Assets	[1]			1,086
Total Assets		2,805,281		4,154,195
Financial instruments sold, but not yet purchased, at fair value		311,062		385,647
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		56,450		66,881
Available-for-sale securities		4,361		5,067
Level 2 [Member] | Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		190,101		249,911
Available-for-sale securities		631,758		675,311
Financial instruments sold, but not yet purchased, at fair value		158,532		139,467
Level 2 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		4,614		2,430
Level 2 [Member] | State And Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		96,150		137,211
Available-for-sale securities		2,453		24,297
Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		698,133		1,592,889
Level 2 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		6,593		6,013
Level 2 [Member] | Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		216,434
Level 2 [Member] | Agency Mortgage-Backed Securities [Member] | Agency Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned				388,856
Available-for-sale securities		793,410		837,878
Financial instruments sold, but not yet purchased, at fair value		141,227		231,909
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		95,613		109,537
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		4,569		9,758
Level 2 [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	[2]	4,642		46,600
Financial instruments sold, but not yet purchased, at fair value		11,303	[3]	14,271	[4]
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		11,284		9,326
Investments		55,046		16,340
Total Assets		66,330		25,666
Financial instruments sold, but not yet purchased, at fair value				955
Level 3 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments				1,060
Level 3 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments		42,113		853
Level 3 [Member] | Other [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	[2]	$ 11,284		9,326
Financial instruments sold, but not yet purchased, at fair value	[4]			$ 955
[1]	Included in other assets in the consolidated statements of financial condition.
[2]	Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities.
[3]	Includes sovereign debt and state and municipal securities.
[4]	Includes sovereign debt, U.S. government agency securities, and loans.

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	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019
Other financial instrument owned [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 9,326		$ 176
Realized losses	(71)	[1]	451	[2]
Purchases	25,852		24,316
Sales	(20,000)		(16,081)
Redemptions	(697)		(3)
Transfers into Level 3			465
Net change	1,958		9,150
Ending Balance	11,284		9,326
Unrealized gains			2
Corporate Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	1,060
Transfers into Level 3			1,060
Transfers out of Level 3	(1,060)
Net change	(1,060)		1,060
Ending Balance			1,060
Equity Auction Rate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	14,427		17,336
Redemptions			(2,700)
Transfers out of Level 3			(470)
Net change	(1,494)		(2,909)
Ending Balance	12,933		14,427
Unrealized gains			261
Other Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	853		857
Sales	(20)
Redemptions			(4)
Transfers into Level 3	41,576
Net change	41,260		(4)
Ending Balance	$ 42,113		$ 853
[1]	Realized and unrealized losses related to financial instruments owned and investments are reported in other income in the consolidated statements of operations
[2]	Realized and unrealized gains/(losses) related to financial instruments owned and investments are reported in other income in the consolidated statements of operations

Fair Value Of Financial Instr_4

Fair Value Of Financial Instruments (Schedule Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities purchased under agreements to resell	[1]	$ 217,930	$ 385,008
Financial instruments owned		694,028	972,932
Available-for-sale securities		2,230,297	3,254,737
Held-to-maturity securities		4,107,960	2,827,883
Derivative contracts	[2]		1,086
Securities sold under agreements to repurchase	[3]	190,955	391,634
Financial instruments sold, but not yet purchased, at fair value		437,978	662,852
Federal Home Loan Bank advances		0
Senior notes		1,112,409	1,017,010
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		2,279,274	1,142,596
Cash segregated for regulatory purposes		172,932	131,374
Securities purchased under agreements to resell		217,930	385,008
Financial instruments owned		694,028	972,932
Available-for-sale securities		2,230,297	3,254,737
Held-to-maturity securities		4,117,384	2,856,219
Bank loans		11,006,760	9,624,042
Loans held for sale		551,248	389,693
Investments		113,862	79,972
Derivative contracts	[2]		1,086
Securities sold under agreements to repurchase		190,955	391,634
Bank deposits		17,396,497	15,332,581
Financial instruments sold, but not yet purchased, at fair value		437,978	662,852
Federal Home Loan Bank advances			250,000
Senior notes		1,112,409	1,017,010
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		2,279,274	1,142,596
Cash segregated for regulatory purposes		172,932	131,374
Securities purchased under agreements to resell		217,930	385,008
Financial instruments owned		694,028	972,932
Available-for-sale securities		2,230,297	3,254,737
Held-to-maturity securities		4,107,960	2,827,883
Bank loans		11,088,058	9,801,986
Loans held for sale		551,248	389,693
Investments		113,862	79,972
Derivative contracts	[2]		1,086
Securities sold under agreements to repurchase		190,955	391,634
Bank deposits		17,192,722	14,467,894
Financial instruments sold, but not yet purchased, at fair value		437,978	662,852
Federal Home Loan Bank advances			250,000
Senior notes		1,265,669	1,069,425
Debentures to Stifel Financial Capital Trusts		$ 41,071	$ 45,847
[1]	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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, respectively.
[2]	Included in other assets in the consolidated statements of financial condition.
[3]	Collateral pledged includes the fair value of securities pledged by our company to the counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

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		Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities purchased under agreements to resell	[1]	$ 217,930	$ 385,008
Held-to-maturity securities		4,107,960	2,827,883
Securities sold under agreements to repurchase	[2]	190,955	391,634
Federal Home Loan Bank advances		0
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash		2,245,082	1,116,862
Cash segregated for regulatory purposes		172,932	131,374
Securities purchased under agreements to resell		217,930	385,008
Held-to-maturity securities		4,107,960	2,827,883
Bank loans		11,088,058	9,801,986
Loans held for sale		551,248	389,693
Securities sold under agreements to repurchase		190,955	391,634
Bank deposits		17,192,722	14,467,894
Senior notes		1,265,669	1,069,425
Debentures to Stifel Financial Capital Trusts		41,071	45,847
Federal Home Loan Bank advances			250,000
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash		2,245,082	1,116,862
Cash segregated for regulatory purposes		172,932	131,374
Securities purchased under agreements to resell		164,094	342,132
Securities sold under agreements to repurchase			22,205
Senior notes		1,265,669	1,069,425
Federal Home Loan Bank advances			250,000
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		53,836	42,876
Held-to-maturity securities		3,943,944	2,666,773
Bank loans		11,088,058	9,801,986
Loans held for sale		551,248	389,693
Securities sold under agreements to repurchase		190,955	369,429
Bank deposits		17,192,722	14,467,894
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		164,016	161,110
Debentures to Stifel Financial Capital Trusts		$ 41,071	$ 45,847
[1]	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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, respectively.
[2]	Collateral pledged includes the fair value of securities pledged by our company to the counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

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		Dec. 31, 2020	Dec. 31, 2019
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		$ 694,028	$ 972,932
U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		56,450	66,881
Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		194,575	250,783
Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		67,593	64,009
State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		96,150	137,211
U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		46,900	9,266
Securities Sold, But Not yet Purchased [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value		437,978	662,852
Other	[1]	11,303	15,226
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		162,626	140,100
Securities Sold, But Not yet Purchased [Member] | Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Equity securities		30,848	32,047
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		91,974	243,570
Securities Sold, But Not yet Purchased [Member] | Agency Mortgage-Backed Securities [Member] | Agency Securities
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		141,227	231,909
Securities Owned [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Other	[2]	15,926	55,926
Financial instruments owned, at fair value		694,028	972,932
Securities Owned [Member] | U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		56,450	66,881
Securities Owned [Member] | Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities		194,575	250,783
Securities Owned [Member] | Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Equity securities		67,593	64,009
Securities Owned [Member] | State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
State and municipal securities		96,150	137,211
Securities Owned [Member] | U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		46,900	9,266
Securities Owned [Member] | Agency Mortgage-Backed Securities [Member] | Agency Securities
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned		$ 216,434	$ 388,856
[1]	Includes sovereign debt, U.S. government agency securities, loans, and state and municipal securities.
[2]	Includes loans, asset-backed securities, sovereign debt, and non-agency mortgage-backed securities.

Financial Instruments Owned A_4

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments pledged as collateral	$ 368.4	$ 801.5
Securities Owned [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments pledged as collateral	$ 194	$ 511.2

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		Dec. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		$ 2,184,339	$ 3,254,041
Available for sale securities, unrealized gains	[1]	51,549	15,489
Available-for-sale Securities, Gross unrealized losses	[1]	(5,591)	(14,793)
Available-for-sale securities		2,230,297	3,254,737
Held-to-maturity Securities, Amortized cost		4,117,384	2,856,219
Held-to-maturity securities, Estimated fair value		4,107,960	2,827,883
U.S. Government Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		4,293	5,028
Available for sale securities, unrealized gains	[1]	68	39
Available-for-sale securities		4,361	5,067
State And Municipal Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		2,395	24,198
Available for sale securities, unrealized gains	[1]	58	99
Available-for-sale securities		2,453	24,297
Agency Mortgage-Backed Securities [Member] | Agency Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		777,025	840,659
Available for sale securities, unrealized gains	[1]	16,401	3,070
Available-for-sale Securities, Gross unrealized losses	[1]	(16)	(5,851)
Available-for-sale securities		793,410	837,878
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		91,237	109,982
Available for sale securities, unrealized gains	[1]	4,376	269
Available-for-sale Securities, Gross unrealized losses	[1]		(714)
Available-for-sale securities		95,613	109,537
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		4,550	9,731
Available for sale securities, unrealized gains	[1]	28	50
Available-for-sale Securities, Gross unrealized losses	[1]	(9)	(23)
Available-for-sale securities		4,569	9,758
Corporate Fixed Income Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		604,662	664,028
Available for sale securities, unrealized gains	[1]	27,096	11,283
Available-for-sale securities		631,758	675,311
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		700,177	1,600,415
Available for sale securities, unrealized gains	[1]	3,522	679
Available-for-sale Securities, Gross unrealized losses	[1]	(5,566)	(8,205)
Available-for-sale securities		698,133	1,592,889
Held-to-maturity Securities, Amortized cost	[2]	4,117,384	2,856,219
Held-to-maturity Securities, Gross unrealized gains	[2]	8,111	5,960
Held-to-maturity Securities, Gross unrealized losses	[2]	(17,535)	(34,296)
Held-to-maturity securities, Estimated fair value	[2]	$ 4,107,960	$ 2,827,883
[1]	Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive income/(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 Millions	12 Months Ended
	Dec. 31, 2020USD ($)security	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Proceeds from sale of available-for-sale securities	$ 491.9	$ 641.8	$ 372.4
Net realized gains (loss) resulting from sale of available-for-sale securities	(0.5)	(0.3)	(3.9)
Transfers from held to maturity to available for sale securities reclassification fair value		1,100
Other comprehensive income (loss), transfers from held-to-maturity to available-for-sale securities, net of tax		17.9
Transfers from held to maturity to available for sale securities reclassification fair value	1,000
Unrealized gains (losses) recorded in accumulated other comprehensive loss	33.1	42.4	$ (36.3)
Financial instruments pledged as collateral	$ 368.4	801.5
Number of available for sale securities whose amortized costs exceeded their fair values | security	40
Available-for-sale Securities, Continuous	$ 5.6
Available-for-sale Securities, Continuous Unrealized	3.4
Available-for-sale Securities, Continuous	$ 524.1
Percentage of available-for-sale portfolio	23.50%
Pledged [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Trading securities pledged	$ 1,400	$ 816.1
Other Assets [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Accrued interest receivable	$ 26

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	Dec. 31, 2020		Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]
Available-for-sale Securities, debt maturities, within one year, Amortized Cost	$ 143,462		$ 6,861
Available-for-sale Securities, debt maturities, after one year through three years, Amortized Cost	134,040		229,184
Available-for-sale Securities, debt maturities, after three year through five years, Amortized Cost	247,907		422,236
Available-for-sale Securities, debt maturities, after five through ten years, Amortized Cost	429,921		409,664
Available-for-sale Securities, debt maturities, after ten years, Amortized Cost	1,229,009		2,186,096
Available-for-sale Securities, debt maturities, Amortized Cost	2,184,339		3,254,041
Available-for-sale Securities, debt maturities, within one year, Fair Value	144,362	[1]	6,871
Available-for-sale Securities, debt maturities, after one year through three years, Fair Value	137,625		229,760
Available-for-sale Securities, debt maturities, after three year through five years, Fair Value	266,139		429,909
Available-for-sale Securities, debt maturities, after five through ten years, fair value	435,111	[1]	411,680
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	1,247,060	[1]	2,176,517
Available-for-sale Securities, debt maturities, Fair Value	2,230,297	[1]	3,254,737
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	1,932,439		598,250
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost	2,167,485		2,257,969
Held-to-maturity Securities, Amortized cost	4,117,384		2,856,219
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	1,926,425		597,166
Held-to-maturity Securities, debt maturities, after ten years, Fair Value	2,164,075		2,230,717
Held-to-maturity Securities, debt maturities, Fair Value	$ 4,107,960		$ 2,827,883
[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		Dec. 31, 2020		Dec. 31, 2019
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value		$ 144,362	[1]	$ 6,871
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	403,764
Available-for-sale Securities, debt maturities, after five through ten years, fair value		435,111	[1]	411,680
Availably-for-sale Securities, debt maturities, after ten years, Fair Value		1,247,060	[1]	2,176,517
Available-for-sale Securities, debt maturities, Fair Value		2,230,297	[1]	3,254,737
Held-to-maturity Securities, debt maturities, after five year through ten, Amortized Cost		1,932,439		598,250
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost		2,167,485		2,257,969
Held-to-maturity Securities, Amortized cost		4,117,384		$ 2,856,219
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]	2,518
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	1,843
Available-for-sale Securities, debt maturities, Fair Value	[1]	4,361
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]	2,453
Available-for-sale Securities, debt maturities, Fair Value	[1]	2,453
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]	121,398
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	401,550
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	108,810
Available-for-sale Securities, debt maturities, Fair Value	[1]	631,758
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]	237,524
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	460,609
Available-for-sale Securities, debt maturities, Fair Value	[1]	698,133
Held-to-maturity Securities, debt maturities, after one year through five, Amortized Cost		17,460
Held-to-maturity Securities, debt maturities, after five year through ten, Amortized Cost		1,932,439
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost		2,167,485
Held-to-maturity Securities, Amortized cost		4,117,384
Agency Mortgage-Backed Securities [Member] | Agency Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value	[1]	3
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	355
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	86,324
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	706,728
Available-for-sale Securities, debt maturities, Fair Value	[1]	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, debt maturities, within one year, Fair Value	[1]	16,602
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	16
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	78,995
Available-for-sale Securities, debt maturities, Fair Value	[1]	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, debt maturities, within one year, Fair Value	[1]	3,841
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	728
Available-for-sale Securities, debt maturities, Fair Value	[1]	$ 4,569
[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_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	Dec. 31, 2020USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, 12 months or more	$ (3,400)
Available-for-sale Securities, Gross unrealized losses, Total	(5,600)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	524,100
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(2,148)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	165,265
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(3,443)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	358,882
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(5,591)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	524,147
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(2,132)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	155,011
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(3,434)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	358,154
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(5,566)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	513,165
Agency Mortgage-Backed Securities [Member] | Agency Securities
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(16)
Available-for-sale Securities, Estimated fair value, Less than 12 months	10,254
Available-for-sale Securities, Gross unrealized losses, Total	(16)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	10,254
Agency Mortgage-Backed Securities [Member] | Non-Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(9)
Available-for-sale Securities, Estimated fair value, 12 months or more	728
Available-for-sale Securities, Gross unrealized losses, Total	(9)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 728

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		Dec. 31, 2020	Dec. 31, 2019
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		$ 4,117,384	$ 2,856,219
Asset-Backed Securities [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost	[1]	4,117,384	$ 2,856,219
Asset-Backed Securities [Member] | AAA [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		1,141,171
Asset-Backed Securities [Member] | AA [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		2,958,169
Asset-Backed Securities [Member] | A [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		15,500
Asset-Backed Securities [Member] | Moody's, C Rating [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity securities, at amortized cost		$ 2,544
[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	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 11,170,813	$ 9,752,616
Unamortized loan discount, net	(1,822)	(6,588)
Loans in process	(48,222)	(27,717)
Unamortized loan fees, net	(1,980)	1,310
Allowance for loan losses	(112,029)	(95,579)	$ (85,833)
Loans held for investment, net	$ 11,006,760	$ 9,624,042
Gross bank loans, Percent	100.00%	100.00%
Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 4,296,089	$ 3,438,953
Allowance for loan losses	$ (67,222)	$ (69,949)	(68,367)
Gross bank loans, Percent	38.50%	35.30%
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 3,956,670	$ 3,309,548
Allowance for loan losses	$ (16,300)	$ (14,253)	(11,228)
Gross bank loans, Percent	35.40%	33.90%
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 1,933,974	$ 2,098,211
Allowance for loan losses	$ (2,015)	$ (2,361)	(1,978)
Gross bank loans, Percent	17.30%	21.50%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 366,485	$ 428,549
Allowance for loan losses	(8,580)	(3,564)	(1,778)
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	501,681	398,839
Allowance for loan losses	$ (17,275)	$ (4,613)	(1,241)
Gross bank loans, Percent	4.50%	4.10%
Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 75,507	$ 51,205
Allowance for loan losses	$ (374)	$ (442)	(310)
Gross bank loans, Percent	0.70%	0.50%
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 40,407	$ 27,311
Allowance for loan losses	$ (263)	$ (397)	$ (931)
Gross bank loans, Percent	0.30%	0.30%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans, Percent	3.30%	4.40%

Bank Loans (Narrative) (Details

Bank Loans (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held for sale	$ 551,248	$ 389,693
Gains (losses) recognized from sale of loans	41,200	13,100	$ 8,200
Impaired loans more than 90 days past due	13,800	14,600
Troubled debt restructurings	200	200
Specific allowance	$ 8,182	$ 8,182
Collateralized loan portfolio	98.80%	98.30%
ASU 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in allowance for credit losses	$ 10,400
Credit Loss Reserves Net	28,300
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,800,000	$ 3,800,000
Accrued interest receivable	20,800
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,100,000	3,100,000
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held for sale	551,200	389,700
Stifel Bancorp [Member] | Executive Officers and Directors [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding amount	23,600	24,500
Stifel Bancorp [Member] | Executive Officers and Directors of Certain Affiliated Entities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding amount	$ 23,600	$ 24,500

Bank Loans (Activity In The All

Bank Loans (Activity In The Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 95,579	$ 85,833
CECL Adoption	(11,736)
Provision	28,264	9,977
Charge-offs	(193)	(386)
Recoveries	115	155
Ending Balance	112,029	95,579
Commercial And Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	69,949	68,367
CECL Adoption	(19,940)
Provision	17,341	1,821
Charge-offs	(153)	(239)
Recoveries	25
Ending Balance	67,222	69,949
Residential Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	14,253	11,228
CECL Adoption	3,499
Provision	(1,452)	2,974
Charge-offs		(41)
Recoveries		92
Ending Balance	16,300	14,253
Securities-Based Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	2,361	1,978
CECL Adoption	1,346
Provision	(1,692)	383
Ending Balance	2,015	2,361
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	3,564	1,778
CECL Adoption	791
Provision	4,225	1,786
Ending Balance	8,580	3,564
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	4,613	1,241
CECL Adoption	2,674
Provision	9,988	3,372
Ending Balance	17,275	4,613
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	442	310
CECL Adoption	39
Provision	(195)	129
Recoveries	88	3
Ending Balance	374	442
Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	397	931
CECL Adoption	(145)
Provision	49	(488)
Charge-offs	(40)	(106)
Recoveries	2	60
Ending Balance	$ 263	$ 397

Bank Loans (Recorded Balances O

Bank Loans (Recorded Balances Of Loans and Amount Of Allowance Allocated Based Upon Impairment Method by Portfolio Segment) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 8,182	$ 8,182
Allowance for Loan Losses, Collectively Evaluated for Impairment	103,847	87,397
Allowance for Loan Losses, Total	112,029	95,579	$ 85,833
Recorded Investment in Loans, Individually Evaluated for Impairment	13,802	14,587
Recorded Investment in Loans, Collectively Evaluated for Impairment	11,157,011	9,738,029
Recorded Investment in Loans, Total	11,170,813	9,752,616
Commercial And Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	8,158	8,158
Allowance for Loan Losses, Collectively Evaluated for Impairment	59,064	61,791
Allowance for Loan Losses, Total	67,222	69,949	68,367
Recorded Investment in Loans, Individually Evaluated for Impairment	12,251	12,991
Recorded Investment in Loans, Collectively Evaluated for Impairment	4,283,838	3,425,962
Recorded Investment in Loans, Total	4,296,089	3,438,953
Residential Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	24	24
Allowance for Loan Losses, Collectively Evaluated for Impairment	16,276	14,229
Allowance for Loan Losses, Total	16,300	14,253	11,228
Recorded Investment in Loans, Individually Evaluated for Impairment	1,407	1,412
Recorded Investment in Loans, Collectively Evaluated for Impairment	3,955,263	3,308,136
Recorded Investment in Loans, Total	3,956,670	3,309,548
Securities-Based Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,015	2,361
Allowance for Loan Losses, Total	2,015	2,361	1,978
Recorded Investment in Loans, Collectively Evaluated for Impairment	1,933,974	2,098,211
Recorded Investment in Loans, Total	1,933,974	2,098,211
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	8,580	3,564
Allowance for Loan Losses, Total	8,580	3,564	1,778
Recorded Investment in Loans, Individually Evaluated for Impairment	144
Recorded Investment in Loans, Collectively Evaluated for Impairment	366,341	428,549
Recorded Investment in Loans, Total	366,485	428,549
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	17,275	4,613
Allowance for Loan Losses, Total	17,275	4,613	1,241
Recorded Investment in Loans, Collectively Evaluated for Impairment	501,681	398,839
Recorded Investment in Loans, Total	501,681	398,839
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	374	442
Allowance for Loan Losses, Total	374	442	310
Recorded Investment in Loans, Individually Evaluated for Impairment		184
Recorded Investment in Loans, Collectively Evaluated for Impairment	75,507	51,021
Recorded Investment in Loans, Total	75,507	51,205
Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	263	397
Allowance for Loan Losses, Total	263	397	$ 931
Recorded Investment in Loans, Collectively Evaluated for Impairment	40,407	27,311
Recorded Investment in Loans, Total	$ 40,407	$ 27,311

Bank Loans (Loans That Were Ind

Bank Loans (Loans That Were Individually Evaluated For Impairment By Portfolio Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 13,952	$ 14,737
Recorded Investment with No Allowance	1,407	1,647
Recorded Investment with Allowance	12,395	12,940
Total Recorded Investment	13,802	14,587
Related Allowance	8,182	8,182
Average Recorded Investment	14,509	15,587
Commercial And Industrial
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	12,251	12,991
Recorded Investment with No Allowance	14	51
Recorded Investment with Allowance	12,237	12,940
Total Recorded Investment	12,251	12,991
Related Allowance	8,158	8,158
Average Recorded Investment	12,954	14,172
Residential Mortgage
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	1,407	1,412
Recorded Investment with No Allowance	1,249	1,412
Recorded Investment with Allowance	158
Total Recorded Investment	1,407	1,412
Related Allowance	24	24
Average Recorded Investment	1,410	1,231
Commercial Real Estate [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	144
Recorded Investment with No Allowance	144
Total Recorded Investment	144
Average Recorded Investment	145
Other [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 150	150
Home Equity Lines Of Credit [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance		184
Recorded Investment with No Allowance		184
Total Recorded Investment		184
Average Recorded Investment		$ 184

Bank Loans (Aging Of The Record

Bank Loans (Aging Of The Recorded Investment In Past Due Loans) (Details) - USD ($)		Dec. 31, 2020		Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 18,241,000		$ 24,937,000
Current Balance		11,152,572,000		9,727,679,000
Recorded Investment in Loans, Total		11,170,813,000		9,752,616,000
Non-accrual		12,395,000	[1]	14,373,000	[2]
Restructured		158,000	[1]	163,000	[2]
Nonperforming loans with no allowance	[1]	1,249,000
Total		13,802,000	[1]	14,536,000	[2]
Loans past due 90 days and still accruing interest		0		0
30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,611,000		10,564,000
90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		13,630,000		14,373,000
Commercial And Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		12,251,000		12,940,000
Current Balance		4,283,838,000		3,426,013,000
Recorded Investment in Loans, Total		4,296,089,000		3,438,953,000
Non-accrual		12,251,000	[1]	12,940,000	[2]
Total		12,251,000	[1]	12,940,000	[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		12,237,000		12,940,000
Residential Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		5,803,000		11,725,000
Current Balance		3,950,867,000		3,297,823,000
Recorded Investment in Loans, Total		3,956,670,000		3,309,548,000
Non-accrual	[2]			1,249,000
Restructured		158,000	[1]	163,000	[2]
Nonperforming loans with no allowance	[1]	1,249,000
Total		1,407,000	[1]	1,412,000	[2]
Residential Mortgage | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,554,000		10,476,000
Residential Mortgage | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,249,000		1,249,000
Securities-Based Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current Balance		1,933,974,000		2,098,211,000
Recorded Investment in Loans, Total		1,933,974,000		2,098,211,000
Commercial Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		144,000
Current Balance		366,341,000		428,549,000
Recorded Investment in Loans, Total		366,485,000		428,549,000
Non-accrual	[1]	144,000
Total	[1]	144,000
Commercial Real Estate [Member] | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		144,000
Construction And Land [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current Balance		501,681,000		398,839,000
Recorded Investment in Loans, Total		501,681,000		398,839,000
Home Equity Lines Of Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		12,000		267,000
Current Balance		75,495,000		50,938,000
Recorded Investment in Loans, Total		75,507,000		51,205,000
Non-accrual	[2]			184,000
Total	[2]			184,000
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		83,000
Home Equity Lines Of Credit [Member] | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				184,000
Other [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		31,000		5,000
Current Balance		40,376,000		27,306,000
Recorded Investment in Loans, Total		40,407,000		27,311,000
Other [Member] | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 31,000		$ 5,000
[1]	There were no loans past due 90 days and still accruing interest at December 31, 2020.
[2]	There were no loans past due 90 days and still accruing interest at December 31, 2019.

Bank Loans (Risk Category Of Lo

Bank Loans (Risk Category Of Loan Portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	$ 11,170,813	$ 9,752,616
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	10,824,109	9,676,864
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	130,332	49,244
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	202,728	13,568
Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	13,644	12,940
Commercial And Industrial
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	4,296,089	3,438,953
Commercial And Industrial | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,995,351	3,365,800
Commercial And Industrial | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	105,759	48,241
Commercial And Industrial | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	182,728	11,972
Commercial And Industrial | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	12,251	12,940
Residential Mortgage
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,956,670	3,309,548
Residential Mortgage | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,955,421	3,307,719
Residential Mortgage | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio		417
Residential Mortgage | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio		1,412
Residential Mortgage | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	1,249
Securities-Based Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	1,933,974	2,098,211
Securities-Based Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	1,933,974	2,098,211
Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	366,485	428,549
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	356,008	427,963
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	10,333	586
Commercial Real Estate [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	144
Construction And Land [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	501,681	398,839
Construction And Land [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	467,441	398,839
Construction And Land [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	14,240
Construction And Land [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	20,000
Home Equity Lines Of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	75,507	51,205
Home Equity Lines Of Credit [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	75,507	51,021
Home Equity Lines Of Credit [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio		184
Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	40,407	27,311
Other [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	$ 40,407	$ 27,311

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	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	$ 11,170,813	$ 9,752,616
Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,296,089	3,438,953
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	847,993
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	554,734
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	844,843
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	451,578
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	212,146
Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	301,502
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	1,083,293
Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3,956,670	3,309,548
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,600,107
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	896,190
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	375,252
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	302,673
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	272,101
Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	510,347
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,933,974	2,098,211
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	25,563
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	104,011
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	300
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	16,716
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	1,786,950
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	501,681	398,839
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	68,392
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	206,085
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	153,656
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	61,289
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,450
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,355
Construction And Land [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,454
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	366,485	428,549
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	77,792
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	151,805
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	38,888
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,275
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	14,340
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	37,903
Commercial Real Estate [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	482
Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	75,507	51,205
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	75,507
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	40,407	27,311
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	503
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	197
Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	39,702
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,824,109	9,676,864
Pass [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3,995,351	3,365,800
Pass [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	828,098
Pass [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	519,723
Pass [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	743,440
Pass [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	332,986
Pass [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	204,369
Pass [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	297,288
Pass [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	1,069,447
Pass [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3,955,421	3,307,719
Pass [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,600,107
Pass [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	896,190
Pass [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	375,252
Pass [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	302,524
Pass [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	272,101
Pass [Member] | Residential Mortgage | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	509,247
Pass [Member] | Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,933,974	2,098,211
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	25,563
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	104,011
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	294
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	140
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	300
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	16,716
Pass [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	1,786,950
Pass [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	467,441	398,839
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	68,392
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	206,085
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	119,416
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	61,289
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,450
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,355
Pass [Member] | Construction And Land [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,454
Pass [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	356,008	427,963
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	77,792
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	151,805
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	38,744
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,275
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,007
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	37,903
Pass [Member] | Commercial Real Estate [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	482
Pass [Member] | Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	75,507	51,021
Pass [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	75,507
Pass [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	40,407	27,311
Pass [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	5
Pass [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	503
Pass [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	197
Pass [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	39,702
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	202,728	13,568
Substandard [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	182,728	11,972
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	19,395
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	34,772
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	65,801
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	48,647
Substandard [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	7,777
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	6,336
Substandard [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		1,412
Substandard [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	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] | Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		184
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	13,644	12,940
Doubtful [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	12,251	12,940
Doubtful [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	12,237
Doubtful [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	14
Doubtful [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	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	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	144
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	130,332	49,244
Special Mention [Member] | Commercial And Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	105,759	48,241
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	500
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	239
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	35,602
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	57,708
Special Mention [Member] | Commercial And Industrial | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,200
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	7,510
Special Mention [Member] | Residential Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		417
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
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	$ 586
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	$ 10,333

Fixed Assets (Summary Of Fixed

Fixed Assets (Summary Of Fixed Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Office equipment	$ 323,841	$ 288,975
Leasehold improvements	105,187	120,570
Building	62,803	58,804
Aircraft engine operating leases		206,315
Fixed assets, gross	491,831	674,664
Accumulated depreciation and amortization	(323,916)	(292,499)
Fixed assets, net	$ 167,915	$ 382,165

Fixed Assets (Narrative) (Detai

Fixed Assets (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)Air_craft	Dec. 31, 2018USD ($)
Property Plant And Equipment [Abstract]
Depreciation and amortization	$ 40,863	$ 38,369	$ 27,896
Number of Aircraft engines | Air_craft		14
Aircraft engines with a net book value		$ 200,400
Lease income		$ 20,900
Operating Lease, Income, Comprehensive Income [Extensible List]		us-gaap:OtherIncomeMember

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Carrying Amount Of Goodwill And Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,194,074
Goodwill, Net Adjustments	(2,104)
Goodwill, Sale of ZCM	(9,972)
Goodwill, Ending balance	1,181,998	$ 1,194,074
Intangible assets, Beginning balance	161,773
Intangible assets, Adjustments / Sale of ZCM	(1,169)
Intangible assets, Amortization	(19,620)	(16,015)	$ (12,557)
Intangible assets, Ending balance	140,984	161,773
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	344,981
Goodwill, Sale of ZCM	(9,972)
Goodwill, Ending balance	335,009	344,981
Intangible assets, Beginning balance	53,279
Intangible assets, Adjustments / Sale of ZCM	(1,532)
Intangible assets, Amortization	(7,076)
Intangible assets, Ending balance	44,671	53,279
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	849,093
Goodwill, Net Adjustments	(2,104)
Goodwill, Ending balance	846,989	849,093
Intangible assets, Beginning balance	108,494
Intangible assets, Adjustments / Sale of ZCM	363
Intangible assets, Amortization	(12,544)
Intangible assets, Ending balance	$ 96,313	$ 108,494

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	Dec. 06, 2019	Nov. 01, 2019	Sep. 03, 2019	Jul. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Goodwill and Intangible Assets [Line Items]
Amortization of intangible assets					$ 19,620	$ 16,015	$ 12,557
Customer Relationships [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets					10 years 6 months
Trade Name [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets					9 years 3 months 18 days
Core Deposits [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets					3 years 6 months
Non-Compete Agreements [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets					6 years 1 month 6 days
Investment Banking Backlog [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets					8 years 1 month 6 days
Acquired Technology [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets					1 year 8 months 12 days
Mooreland Partners [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Date of acquisition				Jul. 1, 2019	Jul. 1, 2019
B&F Capital Markets, Inc. [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Date of acquisition			Sep. 3, 2019
MainFirst Bank AG [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Date of acquisition		Nov. 1, 2019
GMP Capital Inc. [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Date of acquisition	Dec. 6, 2019

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 253,941	$ 259,102
Accumulated Amortization	112,957	97,329
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	202,342	207,253
Accumulated Amortization	85,152	75,987
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	28,659	28,659
Accumulated Amortization	15,660	13,649
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	9,240	9,490
Accumulated Amortization	4,229	2,828
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	8,615	8,615
Accumulated Amortization	4,809	2,985
Investment Banking Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,245	4,245
Accumulated Amortization	2,734	1,787
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	840	840
Accumulated Amortization	$ 373	$ 93

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Amortization Expense In Future Periods) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 17,806
2022	16,454
2023	14,601
2024	13,886
2025	11,826
Thereafter	64,293
Future amortization expense total	$ 138,866

Borrowings and Federal Home L_2

Borrowings and Federal Home Loan Bank Advances (Narrative) (Details)	12 Months Ended
	Dec. 31, 2020USD ($)item
Short-term Debt [Line Items]
Uncommitted secured lines of credit	$ 1,000,000,000
Number of banks | item	5
Daily borrowings under our uncommitted secured lines	$ 490,000,000
Compensating balances	0
Federal Home Loan Bank advances	0
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Credit facility	$ 200,000,000
Credit facility expiration date	2024-03
LIBOR rate	1.75%
Outstanding credit facility	$ 0
Stifel Credit Facility [Member]
Short-term Debt [Line Items]
Credit facility	$ 300,000,000
Credit facility expiration date	2021-06
Outstanding credit facility	$ 0
Credit agreement maturity days	364 days
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	1.30%

Senior Notes (Summary of Senior

Senior Notes (Summary of Senior Notes) (Details) - USD ($) $ in Thousands		Dec. 31, 2020	May 31, 2020	Dec. 31, 2019	Oct. 31, 2017	Dec. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Long-term Debt, gross		$ 1,125,000		$ 1,025,000
Debt issuance costs, net		(12,591)		(7,990)
Senior notes, net		1,112,409		1,017,010
Senior notes 4.250% 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
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
Senior notes 3.50% due 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt, gross	[4]			$ 300,000
Senior notes, net						$ 300,000
[1]	In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.250% 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
[4]	In December 2015, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 3.50% senior notes due December 2020

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	Dec. 31, 2020	May 31, 2020	Dec. 31, 2019	Oct. 31, 2017	Dec. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Long-term Debt				$ 1,112,409		$ 1,017,010
Senior notes 4.250% due 2024 [Member]
Debt Instrument [Line Items]
Stated interest rate				4.25%					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 5.20% due 2047 [Member]
Debt Instrument [Line Items]
Stated interest rate				5.20%			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 4.00% due 2030 [Member]
Debt Instrument [Line Items]
Stated interest rate				4.00%	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				50.00%
Senior notes 4.00% due 2030 [Member] | Forecast
Debt Instrument [Line Items]
Redemption price, percentage of principal amount	100.00%
Senior notes 3.50% due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate				3.50%				3.50%
Long-term Debt								$ 300,000
Debt instrument, maturity date				Dec. 31, 2020
Redemption price, percentage of principal amount				100.00%

Senior Notes (Schedule Of Corpo

Senior Notes (Schedule Of Corporate Debt Principal Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior notes, net	$ 1,112,409	$ 1,017,010
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	Dec. 31, 2020	Dec. 31, 2019
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Demand deposits (interest-bearing)	$ 16,886,953	$ 14,643,966
Demand deposits (non-interest-bearing)	411,890	165,657
Certificates of deposit	97,654	522,958
Bank deposits	$ 17,396,497	$ 15,332,581

Bank Deposits (Narrative) (Deta

Bank Deposits (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Bank Deposits [Line Items]
Weighted average interest rate on deposits	0.09%	0.64%
Brokerage Customers Deposits [Member]
Bank Deposits [Line Items]
Deposits of related parties	$ 16,000	$ 13,900
Stifel Nicolaus [Member]
Bank Deposits [Line Items]
Interest bearing and time deposits of executive officers, directors, and affiliates	$ 6.7	$ 6.7

Bank Deposits (Scheduled Maturi

Bank Deposits (Scheduled Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Within one year	$ 2,719	$ 5,305
One to three years	409	360
Three to five years	254	13
Certificates of deposit, less than $100,000	3,382	5,678
Within one year	63,650	441,341
One to three years	30,622	68,855
Three to five years		7,084
Certificates of deposit, $100,000 and greater	94,272	517,280
Total certificates of deposit	$ 97,654	$ 522,958

Debentures To Stifel Financia_3

Debentures To Stifel Financial Capital Trusts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2016	Dec. 31, 2019		Jun. 28, 2008	Mar. 30, 2007	Aug. 12, 2005
Debt Instrument [Line Items]
Debenture to Stifel Financial Capital Trust	$ 60,000			$ 60,000
Stifel Financial Capital Trust II [Member]
Debt Instrument [Line Items]
Debenture to Stifel Financial Capital Trust	$ 20,000	[1]		20,000	[1]			$ 35,000
Stated interest rate	6.38%
Maturity date	Sep. 30, 2035
Earliest call date	Sep. 30, 2010
Interest rate terms, spread over reference rate	1.70%
Reference rate	three-month LIBOR plus 1.70% per annum
Extinguishment of debentures			$ 15,000
Stifel Financial Capital Trust III [Member]
Debt Instrument [Line Items]
Debenture to Stifel Financial Capital Trust	$ 35,000	[2]		35,000	[2]		$ 35,000
Stated interest rate	6.79%
Maturity date	Jun. 6, 2037
Earliest call date	Jun. 6, 2012
Interest rate terms, spread over reference rate	1.85%
Reference rate	three-month LIBOR plus 1.85% per annum
Stifel Financial Capital Trust IV [Member]
Debt Instrument [Line Items]
Debenture to Stifel Financial Capital Trust	$ 5,000	[3]		$ 5,000	[3]	$ 35,000
Stated interest rate	6.78%
Maturity date	Sep. 6, 2037
Earliest call date	Sep. 6, 2012
Interest rate terms, spread over reference rate	1.85%
Reference rate	three-month LIBOR plus 1.85% per annum
[1]	On August 12, 2005, we completed a private placement of $35.0 million of 6.38% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust II (the “Trust II”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on September 30, 2035, but may be redeemed by our company, and in turn, the Trust II would call the debenture beginning September 30, 2010. The Trust II requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.70% per annum. During 2016, we extinguished $15.0 million of the Trust II debentures.
[2]	On March 30, 2007, we completed a private placement of $35.0 million of 6.79% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust III (the “Trust III”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on June 6, 2037, but may be redeemed by our company, and in turn, Trust III would call the debenture beginning June 6, 2012. Trust III requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.85% per annum.
[3]	On June 28, 2007, we completed a private placement of $35.0 million of 6.78% Cumulative Trust Preferred Securities. The trust preferred securities were offered by Stifel Financial Capital Trust IV (the “Trust IV”), a non-consolidated wholly owned subsidiary of our company. The trust preferred securities mature on September 6, 2037, but may be redeemed by our company, and in turn, Trust IV would call the debenture beginning September 6, 2012. Trust IV requires quarterly distributions of interest to the holders of the trust preferred securities. Distributions are payable at a floating interest rate equal to three-month LIBOR plus 1.85% per annum.

Disclosures About Offsetting _3

Disclosures About Offsetting Assets and Liabilities (Financial Assets and Derivative Assets that are Subject to Offset) (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Offsetting [Abstract]
Gross amounts of recognized assets, Securities borrowing	[1]	$ 313,131	$ 135,373
Net amounts presented in the Statement of Financial Condition, Securities borrowing	[1]	313,131	135,373
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities borrowing	[1]	(46,183)	(52,319)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities borrowing	[1]	(244,578)	(74,760)
Securities borrowed, Net amount	[1]	22,370	8,294
Gross amounts of recognized assets, Reverse repurchase agreements	[2]	217,930	385,008
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	[2]	217,930	385,008
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	[2]	(17,992)	(59,892)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities purchased under agreements to resell	[2]	(199,110)	(325,096)
Securities purchased under agreements to resell, Net amount	[2]	828	20
Gross amounts of recognized assets, Cash flow interest rate contracts			1,086
Net amounts presented in the Statement of Financial Condition, Cash flow interest rate contracts	[3]		1,086
Cash flow interest rate contracts, Net amount			1,086
Gross amounts of recognized assets		531,061	521,467
Net amounts presented in the Statements of Financial Condition		531,061	521,467
Gross amounts not offset in the Statement of Financial Position		(64,175)	(112,211)
Gross amounts not offset in the Statement of Financial Position, Collateral received		(443,688)	(399,856)
Net amount		$ 23,198	$ 9,400
[1]	Securities borrowing transactions are included in receivables from brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 4 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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, respectively.
[3]	Included in other assets in the consolidated statements of financial condition.

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		Dec. 31, 2020	Dec. 31, 2019
Offsetting Assets [Line Items]
Fair value of securities pledged as collateral	[1]	$ 199,110	$ 325,096
Fair Value Of Securities Pledged As Collateral [Member]
Offsetting Assets [Line Items]
Fair value of securities pledged as collateral		$ 217,300	$ 385,300
[1]	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 $ 217.3 million and $ 385.3 million at December 31, 2020 and 2019, respectively.

Disclosures About Offsetting _5

Disclosures About Offsetting Assets and Liabilities (Financial Liabilities and Derivative Liabilities that are Subject to Offset) (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Offsetting [Abstract]
Gross amounts of recognized liabilities, Securities lending	[1]	$ (145,124)	$ (608,333)
Net amounts presented in the Statement of Financial Condition, Securities lending	[1]	(145,124)	(608,333)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities lending	[1]	46,183	52,319
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities lending	[1]	98,925	555,782
Securities lending, Net amount	[1]	(16)	(232)
Gross amounts of recognized liabilities, Securities purchased under agreements to resell	[2]	(190,955)	(391,634)
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	[2]	(190,955)	(391,634)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	[2]	17,992	59,892
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities purchased under agreements to resell	[2]	172,963	331,742
Gross amounts of recognized liabilities		(336,079)	(999,967)
Net amounts presented in the Statement of Financial Condition		(336,079)	(999,967)
Gross amounts not offset in the Statement of Financial Position, Financial instruments		64,175	112,211
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged		271,888	887,524
Net amount		$ (16)	$ (232)
[1]	Securities lending transactions are included in payables to brokers, dealers, and clearing organizations on the consolidated statements of financial condition. See Note 4 in the notes to consolidated financial statements for additional information on payables to brokers, dealers, and clearing organizations.
[2]	Collateral pledged includes the fair value of securities pledged by our company to the counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

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		Dec. 31, 2020	Dec. 31, 2019
Offsetting Liabilities [Line Items]
Fair value of securities pledged as collateral to counter party	[1]	$ 172,963	$ 331,742
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		$ 200,200	$ 407,300
[1]	Collateral pledged includes the fair value of securities pledged by our company to the counter party. These securities are included on the consolidated statements of financial condition unless we default. Collateral pledged by our company to the counter party includes U.S. government agency securities, U.S. government securities, and corporate fixed income securities with market values of $200.2 million and $407.3 million at December 31, 2020 and 2019, respectively.

Commitments, Guarantees, and _2

Commitments, Guarantees, and Contingencies (Narrative) (Details) - To Be Announced Security Contracts [Member] $ in Millions	Dec. 31, 2020USD ($)
Loss Contingencies [Line Items]
Fair value of the TBA securities	$ 141.2
Purchase Commitments [Member]
Loss Contingencies [Line Items]
Estimated fair value of the purchase commitments	$ 141.2

Regulatory Capital Requiremen_3

Regulatory Capital Requirements (Narrative) (Details) $ in Millions	Dec. 31, 2020USD ($)
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	40.00%
Net capital	$ 487.7
Excess of minimum required net capital	463.3
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	Dec. 31, 2020USD ($)
Stifel Financial Corp. [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 2,926,296
Tier 1 capital, Actual Ratio	0.202
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 869,390
Tier 1 capital For Capital Adequacy Purposes, Ratio	0.060
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,159,186
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.080
Total capital, Actual Amount	$ 3,080,234
Total capital, Actual Ratio	0.213
Total capital For Capital Adequacy Purposes, Amount	$ 1,159,186
Total capital For Capital Adequacy Purposes, Ratio	0.080
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,448,983
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.100
Tier 1 leverage, Actual Amount	$ 2,926,296
Tier 1 leverage, Actual Ratio	0.119
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 984,215
Tier 1 leverage For Capital Adequacy Purposes, Ratio	0.040
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,230,269
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.050
Stifel Financial Corp. [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 2,391,296
Tier 1 capital, Actual Ratio	0.165
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 652,042
Tier 1 capital For Capital Adequacy Purposes, Ratio	0.045
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 941,839
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065
Stifel Bank & Trust [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 1,029,659
Tier 1 capital, Actual Ratio	0.114
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 539,675
Tier 1 capital For Capital Adequacy Purposes, Ratio	0.060
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 719,567
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.080
Total capital, Actual Amount	$ 1,142,093
Total capital, Actual Ratio	0.127
Total capital For Capital Adequacy Purposes, Amount	$ 719,567
Total capital For Capital Adequacy Purposes, Ratio	0.080
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 899,459
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.100
Tier 1 leverage, Actual Amount	$ 1,029,659
Tier 1 leverage, Actual Ratio	0.071
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 576,387
Tier 1 leverage For Capital Adequacy Purposes, Ratio	0.040
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 720,483
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.050
Stifel Bank & Trust [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 1,029,659
Tier 1 capital, Actual Ratio	0.114
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 404,757
Tier 1 capital For Capital Adequacy Purposes, Ratio	0.045
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 584,648
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065
Stifel Bank [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 209,795
Tier 1 capital, Actual Ratio	0.165
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 76,163
Tier 1 capital For Capital Adequacy Purposes, Ratio	0.060
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 101,550
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.080
Total capital, Actual Amount	$ 224,281
Total capital, Actual Ratio	0.177
Total capital For Capital Adequacy Purposes, Amount	$ 101,550
Total capital For Capital Adequacy Purposes, Ratio	0.080
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 126,938
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.100
Tier 1 leverage, Actual Amount	$ 209,795
Tier 1 leverage, Actual Ratio	0.073
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 114,655
Tier 1 leverage For Capital Adequacy Purposes, Ratio	0.040
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 143,319
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.050
Stifel Bank [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 209,795
Tier 1 capital, Actual Ratio	0.165
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 57,122
Tier 1 capital For Capital Adequacy Purposes, Ratio	0.045
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 82,510
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065

Operating Leases (Narrative) (D

Operating Leases (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Operating lease right-of-use assets	$ 793,200	$ 725,800
Operating lease liabilities	$ 839,806	$ 766,000
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	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee Disclosure [Abstract]
Operating lease cost	$ 102,595	$ 90,354
Short-term lease cost	502	1,479
Variable lease cost	68	79
Sublease income	(3,894)	(4,761)
Net lease cost	99,271	$ 87,151
Operating lease cash flows	89,122
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 215,662
Weighted average remaining lease term	12 years 3 months 18 days
Weighted average discount rate	4.23%

Operating Leases - Schedule o_2

Operating Leases - Schedule of Information About Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessee Disclosure [Abstract]
2021	$ 93,544
2022	96,278
2023	95,359
2024	94,249
2025	93,040
Thereafter	611,933
Total undiscounted lease payments	1,084,403
Imputed interest	(244,597)
Operating lease liabilities	$ 839,806	$ 766,000

Revenues From Contracts With _3

Revenues From Contracts With Customers (Schedule of Total Revenues Separated between Revenues from Contracts with Customers and Other Sources of Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Revenue from contracts with customers									$ 2,678,888	$ 2,352,237
Other									48,529	19,287
Total revenue from contracts with customers									2,678,888	2,352,237
Other sources of revenue:
Interest	$ 119,876	$ 114,411	$ 128,368	$ 161,177	$ 167,087	$ 178,784	$ 187,940	$ 191,071	523,832	724,882	$ 646,449
Principal transactions									588,303	404,751	351,378
Other									26,816	33,091
Total revenues	$ 1,074,425	$ 897,122	$ 908,901	$ 937,391	$ 975,699	$ 865,716	$ 853,678	$ 819,868	3,817,839	3,514,961	3,194,957
Commissions [Member]
Revenues:
Revenue from contracts with customers									760,627	667,494	657,732
Investment Banking [Member]
Revenues:
Revenue from contracts with customers									952,308	817,421	707,670
Asset Management and Service Fees [Member]
Revenues:
Revenue from contracts with customers									$ 917,424	$ 848,035	$ 806,175

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		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Commissions		$ 760,627		$ 667,494
Investment banking		952,308		817,421
Revenue from contracts with customers		2,678,888		2,352,237
Other		48,529		19,287
Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking		524,157	[1]	369,442
Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking		428,151	[1]	447,979
Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		917,424		848,035	$ 806,175
Global Wealth Management [Member]
Disaggregation Of Revenue [Line Items]
Commissions		513,247		477,401
Investment banking		36,024		37,915
Revenue from contracts with customers		1,512,062		1,379,730
Other		45,438		16,437
Global Wealth Management [Member] | Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking		36,005	[1]	37,915
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		917,353		847,977
Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Commissions		247,380		190,093
Investment banking		916,284		779,506
Revenue from contracts with customers		1,163,735		969,657
Institutional Group [Member] | Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking		488,152	[1]	331,527
Institutional Group [Member] | Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking		428,132	[1]	447,979
Institutional Group [Member] | Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		71		58
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		3,091		2,850
Other		3,091		2,850
United States [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		2,455,425		2,205,338
United States [Member] | Global Wealth Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		1,512,062		1,379,730
United States [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		940,272		822,758
United States [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		3,091		2,850
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		143,960		135,529
United Kingdom [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		143,960		135,529
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		79,503		11,370
Other [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		$ 79,503		$ 11,370
[1]	Excludes revenues not derived from contracts with customers in the Other segment.

Revenues From Contracts With _5

Revenues From Contracts With Customers (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Receivables related to contract with customers	$ 148,600,000	$ 151,300,000
Impairment related to receivables	0
Deferred Revenue	$ 12,100,000	$ 11,300,000

Interest Income and Interest _3

Interest Income and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Income Expense Net [Abstract]
Loans held for investment, net									$ 331,813	$ 379,848	$ 300,541
Investment securities									149,915	231,021	252,200
Margin balances									28,155	52,008	49,515
Financial instruments owned									12,594	23,528	21,407
Other									1,355	38,477	22,786
Total interest income									523,832	724,882	646,449
Senior notes									54,063	44,507	44,610
Bank deposits									14,550	95,813	82,256
Federal Home Loan Bank advances									3,667	7,872	15,173
Other									(6,502)	29,739	28,037
Total interest expense	$ 14,515	$ 13,822	$ 13,084	$ 24,357	$ 31,448	$ 44,144	$ 52,891	$ 49,448	$ 65,778	$ 177,931	$ 170,076

Employee Incentive, Deferred _3

Employee Incentive, Deferred Compensation, And Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to grant									9,800,000
Stock-based compensation									$ 108,217	$ 102,190	$ 100,789
Provision for income tax expense (benefit)	$ 46,232	$ 37,866	$ 35,073	$ 28,517	$ 31,925	$ 40,632	$ 38,225	$ 38,370	147,688	149,152	140,394
Contributions to profit sharing									13,900	13,400	12,800
Deferred Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to non-vested options	$ 491,100								$ 491,100
Weighted-average period, compensation cost expected to recognized, in years									2 years 8 months 12 days
Fair value of stock awards vested									$ 151,300
Incentive Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation									156,200	135,500	111,800
Tax benefit related to stock-based compensation									$ 25,900	$ 11,900	$ 4,000
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	20,900,000								20,900,000
Unvested stock awards outstanding	17,900,000								17,900,000
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									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%
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									2 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

Employee Incentive, Deferred _4

Employee Incentive, Deferred Compensation, And Retirement Plans (Schedule Of Unvested Restricted Stock Award Roll Forward) (Details) - Restricted Stock Units and Restricted Stock Awards [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested, Beginning balance | shares	20,203
Granted | shares	3,683
Vested | shares	(5,464)
Cancelled | shares	(493)
Unvested, Ending balance | shares	17,929
Unvested, Weighted-average grant date fair value, Beginning balance | $ / shares	$ 31.89
Granted, Weighted-average grant date fair value | $ / shares	34.67
Vested, Weighted-average grant date fair value | $ / shares	27.69
Cancelled, Weighted-average grant date fair value | $ / shares	36.33
Unvested, Weighted-average grant date fair value, Ending balance | $ / shares	$ 33.61

Off-Balance Sheet Credit Risk (

Off-Balance Sheet Credit Risk (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 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	$ 1,800	$ 2,300
Fair value of collateral securities sold or repledged	191	391.6
Outstanding commitments to originate loans	889	384.5
Letters of credit outstanding	31.8	38.3
Unfunded Commitment [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Expected Credit Losses For Unfunded Credit Loss	23.3
Accounts Payable and Accrued Expenses [Member] | Unfunded Commitment [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Reserve For Unfunded Commitments For Credit Loss			$ 20.4
Unused Lines Of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Unused lines of credit to commercial and consumer borrowers	$ 2,500	$ 1,500
Standby Letters of Credit [Member] | Maximum [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Letters of credit, expiration period		1 year

Income Taxes (Provision For Inc

Income Taxes (Provision For Income Taxes/(Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Current taxes: Federal									$ 143,859	$ 123,802	$ 89,971
Current taxes: State									42,705	30,464	36,070
Current taxes: Foreign									(236)	1,684	99
Current taxes: Total									186,328	155,950	126,140
Deferred taxes: Federal									(31,019)	(7,027)	11,932
Deferred taxes: State									(5,803)	4,266	2,267
Deferred taxes: Foreign									(1,818)	(4,037)	55
Deferred Income Tax Expense (Benefit), Total									(38,640)	(6,798)	14,254
Provision for income taxes	$ 46,232	$ 37,866	$ 35,073	$ 28,517	$ 31,925	$ 40,632	$ 38,225	$ 38,370	$ 147,688	$ 149,152	$ 140,394

Income Taxes (Reconciliation Of

Income Taxes (Reconciliation Of The Statutory Federal Income Tax With The Company's Effective Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Statutory rate									$ 136,744	$ 125,485	$ 112,215
State income taxes, net of federal income tax									27,934	28,333	30,762
Change in uncertain tax position									666	2,661	(617)
Foreign tax rate difference									(2,032)	(629)	(318)
Excess tax benefit from stock-based compensation									(21,605)	(9,670)	(3,700)
Revaluation of deferred tax assets											(3,006)
Other, net									5,981	2,972	5,058
Provision for income taxes	$ 46,232	$ 37,866	$ 35,073	$ 28,517	$ 31,925	$ 40,632	$ 38,225	$ 38,370	$ 147,688	$ 149,152	$ 140,394

Income Taxes (Deferred Tax Asse

Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Lease liabilities	$ 211,524	$ 181,607
Deferred compensation	79,068	80,389
Accrued expenses	73,835	26,166
Receivable reserves	41,963	33,199
Net operating loss carryforwards	32,727	28,781
Other	3,311	3,210
Total deferred tax assets	442,428	353,352
Valuation allowance	(11,740)	(5,042)
Deferred tax assets	430,688	348,310
Lease ROU asset	(210,670)	(180,598)
Goodwill and other intangibles	(51,189)	(46,625)
Depreciation	(15,371)	(7,231)
Unrealized gain on investments	(11,585)	(5,619)
Prepaid expenses	(5,396)	(3,857)
Total deferred tax liabilities	(294,211)	(243,930)
Net deferred tax asset	$ 136,477	$ 104,380

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax [Line Items]
Net operating loss carryforward		$ 226,200,000
Valuation allowance increase	$ 6,700,000
Net deferred tax asset	136,477,000	104,380,000
Unrecognized tax benefits	3,962,000	3,387,000	$ 312,000	$ 3,180,000
Unrecognized tax benefits, accrued interest and penalties	400,000	200,000
Accounts Payable and Accrued Expenses [Member]
Income Tax [Line Items]
Current taxes payable	38,200,000	15,000,000
Other Assets [Member]
Income Tax [Line Items]
Current taxes receivable	$ 0	$ 0

Income Taxes (Unrecognized Tax

Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Beginning balance	$ 3,387	$ 312	$ 3,180
Increase related to prior year tax positions	977	2,173	4
Decrease related to prior year tax positions	(11)	(54)	(33)
Increase related to current year tax positions	790	956	191
Decrease related to settlements with taxing authorities	(1,181)		(3,030)
Ending balance	$ 3,962	$ 3,387	$ 312

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	12 Months Ended
	Dec. 31, 2020Segment
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								12 Months Ended
		Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Segment Reporting Information [Line Items]
Net revenues		$ 1,059,910	$ 883,300	$ 895,817	$ 913,034	$ 944,251	$ 821,572	$ 800,787	$ 770,420	$ 3,752,061	[1]	$ 3,337,030	[1]	$ 3,024,881	[1]
Income/(loss) before income taxes										651,160		599,138		534,362
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]									2,190,826		2,130,559		1,990,319
Income/(loss) before income taxes										725,884		785,960		737,003
Institutional Group [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]									1,583,147		1,214,017		1,055,495
Income/(loss) before income taxes										325,285		175,670		157,051
Other Segments [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]									(21,912)		(7,546)		(20,933)
Income/(loss) before income taxes										$ (400,009)		$ (362,492)		$ (359,692)
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2020, 2019, and 2018.

Segment Reporting (Schedule O_2

Segment Reporting (Schedule Of Operating Information, Segment) (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Net revenues accounted for by individual client, maximum percentage	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	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets	$ 26,604,254	$ 24,610,225
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets	21,743,202	20,675,580
Institutional Group [Member]
Segment Reporting Information [Line Items]
Total assets	3,733,661	3,668,723
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets	$ 1,127,391	$ 265,922

Segment Reporting (Schedule O_4

Segment Reporting (Schedule Of Net Revenues Earned On Major Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Segment Reporting Information [Line Items]
Total net revenues	$ 1,059,910	$ 883,300	$ 895,817	$ 913,034	$ 944,251	$ 821,572	$ 800,787	$ 770,420	$ 3,752,061	[1]	$ 3,337,030	[1]	$ 3,024,881	[1]
United States [Member]
Segment Reporting Information [Line Items]
Total net revenues									3,460,930		3,154,285		2,855,955
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total net revenues									197,859		163,552		156,557
Other [Member]
Segment Reporting Information [Line Items]
Total net revenues									$ 93,272		$ 19,193		$ 12,369
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2020, 2019, and 2018.

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								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Net income applicable to Stifel Financial Corp.					$ 130,690	$ 109,414	$ 109,085	$ 99,207	$ 503,472	$ 448,396	$ 393,968
Preferred dividends	$ 7,677	$ 9,897	$ 4,843	$ 4,844	4,843	4,844	5,288	2,344	27,261	17,319	9,375
Net income available to common shareholders	$ 180,792	$ 110,630	$ 103,044	$ 81,745	$ 125,847	$ 104,570	$ 103,797	$ 96,863	$ 476,211	$ 431,077	$ 384,593
Average shares used in basic computation	106,041	105,941	105,791	106,929	105,705	106,796	108,779	107,550	106,174	107,997	107,679
Dilutive effect of stock options and units									8,399	9,881	14,303
Average shares used in diluted computation	116,828	113,775	111,581	114,929	116,720	117,216	118,619	118,815	114,573	117,878	121,982
Basic	$ 1.70	$ 1.04	$ 0.97	$ 0.76	$ 1.19	$ 0.98	$ 0.95	$ 0.90	$ 4.49	$ 3.99	$ 3.57
Diluted	$ 1.55	$ 0.97	$ 0.92	$ 0.71	$ 1.08	$ 0.89	$ 0.88	$ 0.82	$ 4.16	$ 3.66	$ 3.15

Earnings Per Share (Details)

Earnings Per Share (Details) - $ / shares	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Cash dividends declared per common share	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.45	$ 0.40	$ 0.32
Cash dividends paid per common share									$ 0.45	$ 0.40	$ 0.32

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 11, 2020	May 19, 2020	Feb. 21, 2019	Aug. 31, 2018	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Number of shares authorized to be repurchased						13,300,000
Purchase of treasury stock						$ 58.3	$ 215.4
Treasury stock acquired, Shares,						1,700,000	5,900,000
Treasury Stock Acquired, Average Cost Per Share						$ 33.35	$ 36.63
Common stock reissued						1,600,000	1,400,000
Preferred stock, dividend rate percentage	50.00%
Preferred stock, par value						$ 1	$ 1	$ 1
Non-Cumulative Perpetual Preferred Stock, Series B [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock			$ 150
Preferred stock, dividend rate percentage			6.25%
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 B preferred stock at its option, subject to regulatory approval, on or after March 15, 2024.
Non-Cumulative Perpetual Preferred Stock, Series C [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock		$ 225
Preferred stock, dividend rate percentage		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 B Preferred Stock [Member] | Over-Allotment Option [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock					$ 10
Series C Preferred Stock [Member] | Over-Allotment Option [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock		$ 25
Business Bancshares, Inc. [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Stock issued for acquisition				2,000,000

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Assets in partnership	$ 26,604,254	$ 24,610,225
Variable Interest Entity Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets in partnership	$ 295,600

Subsequent Events (Details)

Subsequent Events (Details)	12 Months Ended
	Dec. 31, 2020Event
Subsequent Events [Abstract]
Number of types of subsequent events	2

Quarterly Financial Informati_3

Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Operating revenues	$ 954,549	$ 782,711	$ 780,533	$ 776,214	$ 808,612	$ 686,932	$ 665,738	$ 628,797
Interest revenue	119,876	114,411	128,368	161,177	167,087	178,784	187,940	191,071	$ 523,832		$ 724,882		$ 646,449
Total revenues	1,074,425	897,122	908,901	937,391	975,699	865,716	853,678	819,868	3,817,839		3,514,961		3,194,957
Interest expense	14,515	13,822	13,084	24,357	31,448	44,144	52,891	49,448	65,778		177,931		170,076
Net revenues	1,059,910	883,300	895,817	913,034	944,251	821,572	800,787	770,420	3,752,061	[1]	3,337,030	[1]	3,024,881	[1]
Total non-interest expenses	825,209	724,907	752,857	797,928	781,658	670,818	652,805	632,611	3,100,901		2,737,892		2,490,519
Income before income tax expense	234,701	158,393	142,960	115,106	162,593	150,754	147,982	137,809	651,160		599,138		534,362
Provision for income taxes	46,232	37,866	35,073	28,517	31,925	40,632	38,225	38,370	147,688		149,152		140,394
Net income	188,469	120,527	107,887	86,589	130,668	110,122	109,757	99,439	503,472		449,986		393,968
Net income applicable to non-controlling interests					(22)	708	672	232			1,590
Net income applicable to Stifel Financial Corp.					130,690	109,414	109,085	99,207	503,472		448,396		393,968
Preferred dividends	7,677	9,897	4,843	4,844	4,843	4,844	5,288	2,344	27,261		17,319		9,375
Net income available to common shareholders	$ 180,792	$ 110,630	$ 103,044	$ 81,745	$ 125,847	$ 104,570	$ 103,797	$ 96,863	$ 476,211		$ 431,077		$ 384,593
Earnings per common share:
Basic	$ 1.70	$ 1.04	$ 0.97	$ 0.76	$ 1.19	$ 0.98	$ 0.95	$ 0.90	$ 4.49		$ 3.99		$ 3.57
Diluted	1.55	0.97	0.92	0.71	1.08	0.89	0.88	0.82	4.16		3.66		3.15
Cash dividends declared per common share	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.45		$ 0.40		$ 0.32
Weighted-average number of common shares outstanding:
Basic	106,041	105,941	105,791	106,929	105,705	106,796	108,779	107,550	106,174		107,997		107,679
Diluted	116,828	113,775	111,581	114,929	116,720	117,216	118,619	118,815	114,573		117,878		121,982
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2020, 2019, and 2018.