Stifel Financial (SF) 10-K 19 Feb 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020	Jun. 30, 2019
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
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	No
Entity Voluntary Filers	No
Entity Public Float			$ 4.3
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
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, 2019, 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		69,531,294
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 PRA
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 PRB
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

Consolidated Statements Of Fina

Consolidated Statements Of Financial Condition - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents		$ 1,142,596	$ 1,936,560
Cash segregated for regulatory purposes		131,374	132,814
Receivables:
Brokerage clients, net		1,351,786	1,201,477
Brokers, dealers, and clearing organizations		627,790	515,574
Securities purchased under agreements to resell	[1]	385,008	699,900
Financial instruments owned, at fair value		972,932	1,267,449
Available-for-sale securities, at fair value		3,254,737	3,070,447
Held-to-maturity securities, at amortized cost		2,856,219	4,218,854	[2]
Loans:
Held for investment, net		9,624,042	8,517,615
Held for sale, at lower of cost or market		389,693	205,557
Investments, at fair value		79,972	67,982
Fixed assets, net		1,107,928	372,939
Goodwill		1,194,074	1,034,679
Intangible assets, net		161,773	119,655
Loans and advances to financial advisors and other employees, net		525,332	408,436
Deferred tax assets, net		104,380	112,008
Other assets		700,589	637,652
Total assets		24,610,225	24,519,598
Payables:
Brokerage clients		740,444	837,379
Brokers, dealers, and clearing organizations		712,291	432,299
Drafts		119,758	104,887
Securities sold under agreements to repurchase	[3]	391,634	535,394
Bank deposits		15,332,581	15,863,613
Financial instruments sold, but not yet purchased, at fair value		662,852	947,306
Accrued compensation		507,009	460,347
Accounts payable and accrued expenses		1,146,706	344,152
Federal Home Loan Bank advances		250,000	540,000
Borrowings		150	180,655
Senior notes, net		1,017,010	1,015,973
Debentures to Stifel Financial Capital Trusts		60,000	60,000
Total liabilities		20,940,435	21,322,005
Equity
Preferred stock − $1 par value; authorized 3,000,000 shares; issued 12,400 and 6,000 shares, respectively		310,000	150,000
Common stock − $0.15 par value; authorized 194,000,000 shares; issued 74,441,113 and 74,441,017 shares, respectively		11,166	11,166
Additional paid-in-capital		1,909,286	1,893,304
Retained earnings		1,715,704	1,366,503
Accumulated other comprehensive loss		(11,705)	(72,523)
Treasury stock, at cost, 6,113,084 and 3,639,399 shares, respectively		(319,660)	(180,857)
Total Stifel Financial Corp. shareholders’ equity		3,614,791	3,167,593
Non-controlling interests		54,999	30,000
Total equity		3,669,790	3,197,593
Total liabilities and equity		$ 24,610,225	$ 24,519,598
[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 $385.3 million and $695.6 million at December 31, 2019 and 2018, respectively.
[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.
[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 $407.3 million and $558.6 million at December 31, 2019 and 2018, respectively.

Consolidated Statements Of Fi_2

Consolidated Statements Of Financial Condition (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
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	12,400	6,000
Common stock, par value	$ 0.15	$ 0.15
Common stock, shares authorized	194,000,000	194,000,000
Common stock, shares issued	74,441,113	74,441,017
Treasury stock, shares	6,113,084	3,639,399

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Revenue from contracts with customers		$ 2,352,237	$ 2,187,145
Principal transactions		404,751	351,378	$ 396,826
Interest		724,882	646,449	454,381
Other income		52,378	25,553	37,524
Total revenues		3,514,961	3,194,957	2,996,462
Interest expense		177,931	170,076	70,030
Net revenues	[1]	3,337,030	3,024,881	2,926,432
Non-interest expenses:
Compensation and benefits		1,978,116	1,770,762	1,958,929
Occupancy and equipment rental		242,893	222,384	222,708
Communications and office supplies		147,428	140,254	133,493
Commissions and floor brokerage		44,011	41,967	44,132
Other operating expenses		325,444	315,152	297,634
Total non-interest expenses		2,737,892	2,490,519	2,656,896
Income before income tax expense		599,138	534,362	269,536
Provision for income taxes		149,152	140,394	86,665
Net income		449,986	393,968	182,871
Net income applicable to non-controlling interests		1,590
Net income applicable to Stifel Financial Corp.		448,396	393,968	182,871
Preferred dividends		17,319	9,375	9,375
Net income available to common shareholders		$ 431,077	$ 384,593	$ 173,496
Earnings per common share:
Basic		$ 5.99	$ 5.36	$ 2.53
Diluted		5.49	4.73	2.14
Cash dividends declared per common share		$ 0.60	$ 0.48	$ 0.20
Weighted-average number of common shares outstanding:
Basic		71,998	71,786	68,562
Diluted		78,585	81,321	81,035
Commissions [Member]
Revenues:
Revenue from contracts with customers		$ 667,494	$ 657,732	$ 678,904
Investment Banking [Member]
Revenues:
Revenue from contracts with customers		817,421	707,670	726,763
Asset Management and Service Fees [Member]
Revenues:
Revenue from contracts with customers		$ 848,035	$ 806,175	$ 702,064
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2019, 2018, and 2017.

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 449,986	$ 393,968	$ 182,871
Other comprehensive income/(loss), net of tax:
Changes in unrealized gains/(losses) on available-for-sale securities, net of tax	[1],[2],[3],[4]	60,288	(36,254)	4,730
Changes in unrealized losses on cash flow hedging instruments, net of tax	[3],[4],[5]	(4,402)	(792)	(320)
Foreign currency translation adjustment, net of tax	[3],[4]	4,932	(5,691)	7,896
Total other comprehensive income/(loss), net of tax		60,818	(42,737)	12,306
Comprehensive income		510,804	351,231	195,177
Net income applicable to non-controlling interest		1,590
Comprehensive income applicable to Stifel Financial Corp.		$ 509,214	$ 351,231	$ 195,177
[1]	Amounts are net of reclassifications to earnings of realized losses of $0.2 million and $2.9 million and realized gains of $0.2 million for the years ended December 31, 2019, 2018, and 2017, respectively.
[2]	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 accumulated other comprehensive income of $17.9 million. See Notes 2 and 7 for additional information on the transfer.
[3]	Net of a tax expense of $20.2 million, tax benefit of $11.2 million, and tax expense of $3.3 million for the years ended December 31, 2019, 2018, and 2017, respectively.
[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]	Amounts are net of reclassifications to earnings of gains of $3.3 million and $4.9 million and losses of $0.6 million for the years ended December 31, 2019, 2018, and 2017, respectively.

Consolidated Statements Of Co_2

Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other comprehensive income/(loss), tax	$ 20.2	$ (11.2)	$ 3.3
Reclassifications to earnings of realized gains/(losses) on available-for-sale securities	(0.2)	(2.9)	0.2
Increase in accumulated comprehensive income	17.9
Reclassifications to earnings of gains/(losses) on cash flow hedging instruments	3.3	$ 4.9	$ (0.6)
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]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock at Cost [Member]	Non-controlling Interests [Member]	Parent [Member]
Balance, beginning of year at Dec. 31, 2016				$ 150,000	$ 10,426	$ 1,840,551	$ 876,958	$ (39,042)	$ (100,485)
Common stock issued under employee plans					292	(288,152)			74,175
Common stock repurchased									(12,998)
Common stock issued for acquisitions					28	9,324
Unit amortization, net of forfeitures						167,908
Net income		$ 182,871					182,871
Dividends declared, Common							(17,446)
Dividends declared, Preferred							(9,375)
Dividends declared to equity-award holders						3,758
Other						(41)	518
Unrealized gains/(losses) on securities, net of tax		4,730	[1],[2],[3],[4]					4,730
Unrealized losses on cash flow hedging activities, net of tax								(320)
Foreign currency translation adjustment, net of tax		7,896	[3],[4]					7,896
Balance, end of year at Dec. 31, 2017		2,861,576		150,000	10,746	1,733,348	1,033,526	(26,736)	(39,308)		$ 2,861,576
Common stock issued under employee plans					123	(60,256)	(10,985)		28,655
Common stock repurchased		(170,200)							(170,204)
Common stock issued 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)	[3],[4]					(5,691)
Cumulative adjustments for accounting changes	[5]						(1,124)	(3,050)
Capital contributions from non-controlling interest holders										$ 30,000
Balance, end of year at Dec. 31, 2018		3,197,593		150,000	11,166	1,893,304	1,366,503	(72,523)	(180,857)	30,000	3,167,593
Common stock issued 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	[3],[4]					4,932
Cumulative adjustments for accounting changes	[5]						(11,117)
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	$ 11,166	$ 1,909,286	$ 1,715,704	$ (11,705)	$ (319,660)	$ 54,999	$ 3,614,791
[1]	Amounts are net of reclassifications to earnings of realized losses of $0.2 million and $2.9 million and realized gains of $0.2 million for the years ended December 31, 2019, 2018, and 2017, respectively.
[2]	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 accumulated other comprehensive income of $17.9 million. See Notes 2 and 7 for additional information on the transfer.
[3]	Net of a tax expense of $20.2 million, tax benefit of $11.2 million, and tax expense of $3.3 million for the years ended December 31, 2019, 2018, and 2017, respectively.
[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, 2019	Dec. 31, 2018	Dec. 31, 2017
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, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows From Operating Activities:
Net income	$ 449,986	$ 393,968	$ 182,871
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	38,369	27,896	32,495
Amortization of loans and advances to financial advisors and other employees	95,053	85,374	91,594
Amortization of premium on investment portfolio	34,229	25,307	15,837
Provision for loan losses and allowance for loans and advances to financial advisors and other employees	11,007	19,601	25,985
Amortization of intangible assets	16,015	12,557	12,135
Deferred income taxes	(6,863)	14,254	118,129
Stock-based compensation	102,190	100,789	140,461
(Gain)/losses on sale of investments	(7,922)	22,780	(2,359)
Other, net	(38,554)	(10,723)	3,037
Receivables:
Brokerage clients, net	(17,487)	182,619	31,840
Brokers, dealers, and clearing organizations	(8,655)	(56,467)	566,454
Securities purchased under agreements to resell	314,892	(187,680)	(263,632)
Financial instruments owned, including those pledged	335,548	(123,765)	(217,386)
Loans originated as held for sale	(1,848,568)	(1,341,108)	(1,564,386)
Proceeds from mortgages held for sale	1,782,455	1,345,109	1,558,327
Loans and advances to financial advisors and other employees	(210,646)	(116,921)	(72,215)
Other assets	(36,290)	(1,562)	(113,875)
Increase/(decrease) in operating liabilities, net of liabilities assumed:
Brokerage clients	(210,712)	9,173	(13,808)
Brokers, dealers, and clearing organizations	63,822	(16,383)	(79,905)
Drafts	14,871	(2,156)	12,592
Financial instruments sold, but not yet purchased	(284,510)	168,443	79,831
Other liabilities and accrued expenses	38,631	(21,579)	135,894
Net cash provided by operating activities	626,861	529,526	679,916
Cash Flows From Investing Activities:
Maturities, calls, sales, and principal paydowns of available-for-sale securities	1,224,619	1,244,434	985,520
Calls and principal paydowns of held-to-maturity securities	482,079	827,905	370,019
Sale of equipment		21,699
Sale or maturity of investments	14,699	24,445	28,839
Sale of other real estate owned	8,950
Increase in loans held for investment, net	(1,208,817)	(1,079,546)	(1,374,959)
Payments for:
Purchase of available-for-sale securities	(239,965)	(550,162)	(1,583,369)
Purchase of held-to-maturity securities	(243,335)	(1,352,587)	(1,033,700)
Purchase of investments	(37,563)	(8,828)	(4,296)
Purchase of fixed assets	(157,897)	(108,207)	(28,217)
Acquisitions, net of cash acquired	(193,097)	(8,394)	(7,220)
Net cash used in investing activities	(350,327)	(989,241)	(2,647,383)
Cash Flows from Financing Activities:
Repayments of borrowings, net	(62,810)	(216,572)	(121,000)
Proceeds from issuance of senior notes, net			217,913
Proceeds from advances from the FHLB, net			245,000
Repayments of advances from the FHLB, net	(290,000)	(214,950)
Proceeds from non-controlling interests	26,800	30,000
Proceeds from preferred stock issuance, net	154,988
(Decrease)/increase in securities sold under agreements to repurchase	(168,069)	301,690	(34,842)
(Decrease)/increase in bank deposits, net	(531,032)	1,950,661	1,884,452
Increase/(decrease) in securities loaned	114,135	172,380	(166,900)
Tax payments related to shares withheld for stock-based compensation plans	(33,268)	(43,229)	(214,744)
Proceeds from stock option exercises		2,278
Repurchase of common stock	(215,430)	(170,204)	(12,998)
Cash dividends on preferred stock	(17,319)	(9,375)	(9,375)
Cash dividends paid to common stock and equity-award holders	(41,948)	(34,638)	(13,688)
Extinguishment of Stifel Financial Capital Trust		(7,500)
Payment of contingent consideration	(9,526)	(12,846)	(13,328)
Other	(3,391)
Net cash (used in)/provided by financing activities	(1,076,870)	1,747,695	1,760,490
Effect of exchange rate changes on cash	4,932	(5,691)	7,895
(Decrease)/increase in cash, cash equivalents, and cash segregated for regulatory purposes	(795,404)	1,282,289	(199,082)
Cash, cash equivalents, and cash segregated for regulatory purposes at beginning of year	2,069,374	787,085	986,167
Cash, cash equivalents, and cash segregated for regulatory purposes at end of year	1,273,970	2,069,374	787,085
Supplemental disclosure of cash flow information:
Cash paid for interest	183,012	169,724	69,781
Cash paid for income taxes, net of refunds	161,926	67,379	21,516
Noncash investing and financing activities:
Unit grants, net of forfeitures	$ 139,408	136,529	71,300
Issuance of common stock for acquisitions		$ 110,671	$ 9,352

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Cash Flows [Abstract]
Cash and cash equivalents	$ 1,142,596	$ 1,936,560	$ 696,283
Cash segregated for regulatory purposes	131,374	132,814	90,802
Total cash, cash equivalents, and cash segregated for regulatory purposes	$ 1,273,970	$ 2,069,374	$ 787,085

Nature Of Operations And Basis

Nature Of Operations And Basis Of Presentation	12 Months Ended
	Dec. 31, 2019
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 (“KBW”), Stifel Bancorp, Inc. (“Stifel Bancorp”), 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 December 9, 2019, the Company announced that it reached an agreement to sell Ziegler Capital Management, LLC (“ZCM”), a wholly owned asset management subsidiary. The assets and liabilities of ZCM have been classified as held for sale and are included in other assets and accounts payable and accrued expenses, respectively, at December 31, 2019. 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 represents a 27.5% third-party ownership of North Shore Aviation Holdings LLC (“North Shore”), a consolidated subsidiary of the Company that, through its subsidiary, owns airplane engines. See Note 20 for additional information on operating leases. We also 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. In determining whether to consolidate these entities, we evaluate whether the entity is a voting interest entity or a variable interest entity (“VIE”). When we do not have a controlling interest in an entity, but we exert significant influence over the entity, we apply the equity method of accounting. Voting Interest Entity – Voting interest entities are entities that have (i) total equity investment at risk sufficient to fund expected future operations independently, and (ii) equity holders who have the obligation to absorb losses or receive residual returns and the right to make decisions about the entity’s activities. We consolidate voting interest entities when we determine that there is a controlling financial interest, usually ownership of all, or a majority of, the voting interest. Variable Interest Entity – VIEs are entities that lack one or more of the characteristics of a voting interest entity. We are required to consolidate certain VIEs in which we have the power to direct the activities of the entity and the obligation to absorb significant losses or receive significant benefits. In other cases, we consolidate VIEs when we are deemed to be the primary beneficiary. The primary beneficiary is defined as the entity that has a variable interest, or a combination of variable interests, that maintains control and receives benefits or will absorb losses that are not pro rata with its ownership interests. The determination as to whether an entity is a VIE is based on the structure and nature of the entity. We also consider other characteristics, such as the ability to influence the decision-making relative to the entity’s activities and how the entity is financed. With the exception of entities eligible for the deferral codified in Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2010-10, “Consolidation: Amendments for Certain Investment Funds” (“ASU 2010-10”) (generally asset managers and investment companies), ASC 810 states that a controlling financial interest in an entity is present when an enterprise has a variable interest, or combination of variable interests, that have both 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. Entities meeting the deferral provision defined by ASU 2010-10 are evaluated under the historical VIE guidance. Under the historical guidance, a controlling financial interest in an entity is present when an enterprise has a variable interest, or combination of variable interests, that will absorb a majority of the entity’s expected losses, receive a majority of the entity’s expected residual returns, or both. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. We determine whether we are the primary beneficiary of a VIE by first performing a qualitative 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. Where a qualitative analysis is not conclusive, we perform a quantitative analysis. We reassess our initial evaluation of an entity as a VIE and our initial determination of whether we are the primary beneficiary of a VIE upon the occurrence of certain reconsideration events. See Note 29 for additional information on VIEs.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
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, 2019. 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 agency and commercial mortgage-backed securities, and asset-backed securities, consisting of collateralized loan obligation securities and student loan ARS. We evaluate all securities in an unrealized loss position quarterly to assess whether the impairment is other-than-temporary. Our other-than-temporary impairment (“OTTI”) assessment is a subjective process requiring the use of judgments and assumptions. Accordingly, we consider a number of qualitative and quantitative criteria in our assessment, including the extent and duration of the impairment, recent events specific to the issuer and/or industry to which the issuer belongs, the payment structure of the security, external credit ratings and the failure of the issuer to make scheduled interest or principal payments, the value of underlying collateral, current market conditions, and our company’s ability and intent to hold the investment until its value recovers or the securities mature. We may determine that the decline in fair value of an investment is other-than-temporary if our analysis of these factors indicates that we will not recover our investment in the securities. If we determine that impairment on our debt securities is other-than-temporary and we have made the decision to sell the security or it is more likely than not that we will be required to sell the security prior to recovery of its amortized cost basis, we recognize the entire portion of the impairment in earnings. If we have not made a decision to sell the security and we do not expect that we will be required to sell the security prior to recovery of the amortized cost basis, we recognize only the credit component of OTTI in other operating expenses in the consolidated statements of operations. The remaining unrealized loss due to factors other than credit, or the non-credit component, is recorded in accumulated other comprehensive loss. We determine the credit component based on the difference between the security’s amortized cost basis and the present value of its expected future cash flows, discounted based on the purchase yield. The non-credit component represents the difference between the security’s fair value and the present value of expected future cash flows. We estimate the portion of loss attributable to credit using a discounted cash flow model. Key assumptions used in estimating the expected cash flows include default rates, loss severity, and prepayment rates. Assumptions used can vary widely based on the collateral underlying the securities and are influenced by factors such as collateral type, loan interest rate, geographical location of the borrower, and borrower characteristics. Unrealized gains and losses on our available-for-sale securities are reported, net of taxes, in accumulated other comprehensive 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 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 and Allowance for Loan Losses 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. We regularly review the loan portfolio and have established an allowance for loan losses for inherent losses estimated to have occurred in the loan portfolio through a provision for loan losses charged to other operating expenses in the consolidated statements of operations. In providing for the allowance for loan losses, we consider historical loss experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, the selection of proxy data used in developing loss rates, and prevailing economic and business conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. 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. 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. 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, 2019 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. If the individual leaves before the term of the loan expires or fails to meet certain performance standards, the individual is required to repay the balance. In determining the allowance for doubtful receivables from former associates, management considers the facts and circumstances surrounding each receivable, including the amount of the unforgiven balance, the reasons for the terminated employment relationship, and the former associates’ overall financial situation. 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 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. We do not use derivatives for trading or speculative purposes and, at December 31, 2019, all of our derivatives are designated as cash flow hedges. See Note 14 for additional details. 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 had historically been deferred until reimbursed by the client, the related fee revenue was recognized or the engagement was otherwise concluded. 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 had historically been recorded net of client reimbursements and/or netted against revenues. All investment banking 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 no longer recorded net of client reimbursements and 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. 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

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2019
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 $30.5 million of goodwill and intangible assets in the consolidated statement of financial condition, which has been allocated to our company’s Institutional Group segment. 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 $14.6 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 $21.2 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 $51.0 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 non-compete agreements and backlog with an acquisition-date fair value of $5.0 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. Rand & Associates On October 1, 2018, the Company completed the acquisition of Rand & Associates (“Rand”), an independent investment adviser that provides comprehensive wealth management and investment counsel services to individuals, families, and institutions. 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 $9.3 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Global Wealth Management segment. Identifiable intangible assets purchased by our company consisted of customer relationships with an acquisition-date fair value of $4.7 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the Rand business and of the hired financial advisors and the conversion of the customer accounts to our platform. 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 Rand 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 Rand have been included in our results prospectively from the date of acquisition. Business Bancshares, Inc. On August 31, 2018, the Company completed the acquisition of Business Bancshares, Inc. (“BBI”) and its wholly owned subsidiary, The Business Bank of St. Louis, a full-service banking facility that operates from a single location. Upon the closing of the transaction, the Business Bank of St. Louis was renamed “Stifel Bank” and Business Bancshares, Inc. was renamed “Stifel Bancorp, Inc.” Stifel Bancorp, Inc. (“Stifel Bancorp”) is the holding company for Stifel Bank & Trust, and its wholly owned subsidiaries, and Stifel Bank. Under the terms of the merger agreement, each outstanding share of BBI common stock (except for shares of BBI common stock held by BBI as treasury stock) were converted into the right to receive 0.705 shares of our company’s common stock, with fractional shares settled with cash. We issued approximately 2.0 million shares for acquisition of BBI. We acquired approximately $507.8 million of loans, and $85.7 million of other assets (primarily cash and due from banks and investment securities). In addition, we assumed approximately $501.1 million of deposits and $21.9 million of other liabilities. Assets acquired and liabilities assumed were recorded at fair value. The fair values for loans were estimated using discounted cash flow analyses using interest rates currently being offered for loans with similar terms. This value was reduced by an estimate of probable losses and the credit risk associated with the loans. The fair values of deposits were estimated by discounting cash flows using interest rates currently being offered on deposits with similar maturities. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 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 $41.6 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Global Wealth Management segment. Identifiable intangible assets purchased by our company consisted of core deposits with an acquisition date fair value of $8.6 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the BBI business and its customer base. 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 BBI have been included in our results prospectively from the date of acquisition. Ziegler Wealth Management On March 19, 2018, the Company completed the acquisition of Ziegler Wealth Management (“Ziegler”), a privately held investment bank, capital markets, and proprietary investments firm that had 55 private client advisors in five states that managed approximately $5 billion in client assets. Ziegler provided its clients with capital-raising, strategic advisory services, equity and fixed income sales and trading, and research. 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 $19.0 million of goodwill in the consolidated statement of financial condition, which has been allocated to our company’s Global Wealth Management and Institutional Group segments. Identifiable intangible assets purchased by our company consisted of customer relationships and non-compete agreements with an acquisition-date fair value of $9.5 million. The goodwill represents the value expected from the synergies created through the operational enhancement benefits that will result from the integration of the Ziegler business and of the hired financial advisors and the conversion of the customer accounts to our platform. 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 Ziegler 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, 2019
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, 2019 and 2018, included (in thousands) December 31, 2019 2018 Receivables from clearing organizations $ 471,122 $ 320,277 Deposits paid for securities borrowed 135,373 109,795 Securities failed to deliver 21,295 85,502 $ 627,790 $ 515,574 Amounts payable to brokers, dealers, and clearing organizations at December 31, 2019 and 2018, included (in thousands) December 31, 2019 2018 Deposits received from securities loaned $ 608,333 $ 392,163 Payable to clearing organizations 78,702 12,161 Securities failed to receive 25,256 27,975 $ 712,291 $ 432,299 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, 2019
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 equity securities listed in active markets, corporate fixed income securities, and U.S. government securities. If quoted prices are not available for identical instruments, fair values are obtained from pricing services, broker quotes, or other model-based valuation techniques with observable inputs, such as the present value of estimated cash flows, and reported as Level 2. The nature of these financial instruments include instruments for which quoted prices are available but traded less frequently, instruments whose fair value has been derived using a model where inputs to the model are directly observable in the market, or can be derived principally from or corroborated by observable market data, and instruments that are fair valued using other financial instruments, the parameters of which can be directly observed. Level 2 financial instruments include U.S. government agency securities, mortgag e-backed securities, corporate fixed income and equity securities infrequently traded , state and municipal securities, sovereign debt, and asset-backed securities, which primarily includes collateralized loan obligations. We have identified Level 3 financial instruments to include certain asset-backed and loans with unobservable pricing inputs. Level 3 financial instruments have little to no pricing observability as of the report date. These financial instruments do not have active two-way markets and are measured using management’s best estimate of fair value, where the inputs into the determination of fair value require significant management judgment or estimation. Investments Investments carried at fair value primarily include corporate equity securities, auction-rate securities (“ARS”), and private company investments. Corporate equity securities that are valued based on quoted prices in active markets are primarily reported in Level 1. ARS are valued based upon our expectations of issuer redemptions and using internal discounted cash flow models that utilize unobservable inputs. ARS are reported as Level 3 assets. Direct investments in private companies may be valued using the market approach and were valued based on an assessment of each underlying investment, incorporating evaluation of additional significant third-party financing, changes in valuations of comparable peer companies, the business environment of the companies, market indices, assumptions relating to appropriate risk adjustments for nonperformance, and legal restrictions on disposition, among other factors. The fair value derived from the methods used are evaluated and weighted, as appropriate, considering the reasonableness of the range of values indicated. Under the market approach, fair value may be determined by reference to multiples of market-comparable companies or transactions, including earnings before interest, taxes, depreciation, and amortization (“EBITDA”) multiples. For securities utilizing the market comparable companies valuation technique, a significant increase (decrease) in the EBITDA multiple in isolation could result in a significantly higher (lower) fair value measurement. Investments at fair value include investments in funds, including certain money market funds that are measured at net asset value (“NAV”). The Company uses NAV to measure the fair value of its fund investments when (i) the fund investment does not have a readily determinable fair value and (ii) the NAV of the investment fund is calculated in a manner consistent with the measurement principles of investment company accounting, including measurement of the underlying investments at fair value. The Company’s investments in funds measured at NAV include partnership interests, mutual funds, private equity funds, and money market funds. Private equity funds primarily invest in a broad range of industries worldwide in a variety of situations, including leveraged buyouts, recapitalizations, growth investments, and distressed investments. The private equity funds are primarily closed-end funds in which the Company’s investments are generally not eligible for redemption. Distributions will be received from these funds as the underlying assets are liquidated or distributed. The general and limited partnership interests in investment partnerships were primarily valued based upon NAVs received from third-party fund managers. The various partnerships are investment companies, which record their underlying investments at fair value based on fair value policies established by management of the underlying fund. Fair value policies at the underlying fund generally require the funds to utilize pricing/valuation information, including independent appraisals, from third-party sources. However, in some instances, current valuation information for illiquid securities or securities in markets that are not active may not be available from any third-party source or fund management may conclude that the valuations that are available from third-party sources are not reliable. In these instances, fund management may perform model-based analytical valuations that may be used as an input to value these investments. The tables below present the fair value of our investments in, and unfunded commitments to, funds that are measured at NAV (in thousands): December 31, 2019 December 31, 2018 Fair value of investments Unfunded commitments Fair value of investments Unfunded commitments Money market funds $ 25,734 $ — $ 19,719 $ — Mutual funds 7,875 — 9,122 — Private equity funds 2,288 1,203 3,461 1,480 Partnership interests 3,058 953 3,976 1,024 Total $ 38,955 $ 2,156 $ 36,278 $ 2,504 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 U.S. government agency securities, agency mortgage-backed securities not actively traded, corporate fixed income, and sovereign debt 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, 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 — Mortgage-backed securities: Agency 388,856 — 388,856 — Non-agency 5,155 — 5,155 — Asset-backed securities 28,385 — 28,210 175 Corporate securities: Fixed income securities 250,783 872 249,911 — Equity securities 64,009 61,579 2,430 — Sovereign debt 12,403 — 12,403 — State and municipal securities 137,211 — 137,211 — Loans 9,983 — 832 9,151 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: Equity securities 14,243 — — 14,243 Municipal securities 654 — 470 184 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 (1) 1,086 — 1,086 — $ 4,334,461 $ 115,645 $ 4,154,195 $ 25,666 (1) 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 $ — $ — U.S. government agency securities 1,000 — 1,000 — Agency mortgage-backed securities 231,909 — 231,909 — Corporate securities: Fixed income securities 140,100 633 139,467 — Equity securities 32,047 32,047 — — Sovereign debt 13,271 — 13,271 — Loans 955 — — 955 Total financial instruments sold, but not yet purchased $ 662,852 $ 276,250 $ 385,647 $ 955 Assets and liabilities measured at fair value on a recurring basis as of December 31, 201 8 , are presented below (in thousands) : December 31, 2018 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 42,121 $ 42,121 $ — $ — U.S. government agency securities 72,532 — 72,532 — Mortgage-backed securities: Agency 564,111 — 564,111 — Non-agency 25,727 — 25,726 1 Asset-backed securities 25,905 — 25,730 175 Corporate securities: Fixed income securities 310,457 1,100 309,357 — Equity securities 57,911 57,125 786 — Sovereign debt 14,063 — 14,063 — State and municipal securities 154,622 — 154,622 — Total financial instruments owned 1,267,449 100,346 1,166,927 176 Available-for-sale securities: U.S. government agency securities 5,215 417 4,798 — State and municipal securities 68,226 — 68,226 — Mortgage-backed securities: Agency 230,408 — 230,408 — Commercial 69,715 — 69,715 — Non-agency 1,219 — 1,219 — Corporate fixed income securities 931,604 — 931,604 — Asset-backed securities 1,764,060 — 1,764,060 — Total available-for-sale securities 3,070,447 417 3,070,030 — Investments: Corporate equity securities 33,046 31,670 1,376 — Auction rate securities: Equity securities 16,632 — — 16,632 Municipal securities 704 — — 704 Other 1,041 — 184 857 Investments in funds and partnerships measured at NAV 16,559 Total investments 67,982 31,670 1,560 18,193 Cash equivalents measured at NAV 19,719 Derivative contracts (1) 7,683 — 7,683 — $ 4,433,280 $ 132,433 $ 4,246,200 $ 18,369 (1) Included in other assets in the consolidated statements of financial condition. December 31, 2018 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 534,817 $ 534,817 $ — $ — U.S. government agency securities 32,755 — 32,755 — Agency mortgage-backed securities 123,456 — 123,456 — Corporate securities: Fixed income securities 208,725 1,289 207,436 — Equity securities 36,117 35,398 719 — Sovereign debt 11,429 — 11,429 — State and municipal securities 7 — 7 — Total financial instruments sold, but not yet purchased $ 947,306 $ 571,504 $ 375,802 $ — The following table summarize s the changes in fair value associated with Level 3 financial instruments during t he year ended December 31, 2019 (in thousands) : Year Ended December 31, 2019 Financial instruments owned Investments Mortgage- Backed Securities – Non-Agency Asset-Backed Securities Loans Corporate Equity Securities Auction Rate Securities – Equity Auction Rate Securities – Municipal Other Balance at December 31, 2018 $ 1 $ 175 $ — $ — $ 16,632 $ 704 $ 857 Unrealized gains/(losses): Included in changes in net assets (1) — 2 — — 261 — — Realized gains/(losses) (1) (1 ) — 452 — — — — Purchases — — 24,316 — — — — Sales — — (16,081 ) — — — — Redemptions — (2 ) (1 ) — (2,650 ) (50 ) (4 ) Transfers: Into Level 3 — — 465 1,060 — — — Out of Level 3 — — — — — (470 ) — Net change (1 ) — 9,151 1,060 (2,389 ) (520 ) (4 ) Balance at December 31, 2019 $ — $ 175 $ 9,151 $ 1,060 $ 14,243 $ 184 $ 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 change in fair value associated with Level 3 financial instruments sold, but not yet purchased during the year ended December 31, 2019 is attributable to sales during 2019. The following table summarizes the changes in fair value associated with Level 3 financial instruments during the year ended December 31, 201 8 (in thousands) : Year Ended December 31, 2018 Financial instruments owned Investments Mortgage- Backed Securities – Non-Agency Asset-Backed Securities Fixed Income Securities Equity Securities Auction Rate Securities – Equity Auction Rate Securities – Municipal Other Balance at December 31, 2017 $ 1 $ 357 $ 242 $ 253 $ 34,789 $ 846 $ 857 Unrealized gains/(losses): Included in changes in net assets (1) — (164 ) — (130 ) 1,193 8 — Realized gains (1) — — — 21 — — — Purchases — — — — — — — Sales — — — (144 ) — — — Redemptions — (18 ) (242 ) — (19,350 ) (150 ) — Transfers: Into Level 3 — — — — — — — Out of Level 3 — — — — — — — Net change — (182 ) (242 ) (253 ) (18,157 ) (142 ) — Balance at December 31, 2018 $ 1 $ 175 $ — $ — $ 16,632 $ 704 $ 857 (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, 2019 and 2018, relating to Level 3 assets still held at December 31, 2019, 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, 2019 and 2018, whether or not recognized in the consolidated statements of financial condition at fair value (in thousands) December 31, 2019 December 31, 2018 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Cash and cash equivalents $ 1,142,596 $ 1,142,596 $ 1,936,560 $ 1,936,560 Cash segregated for regulatory purposes 131,374 131,374 132,814 132,814 Securities purchased under agreements to resell 385,008 385,008 699,900 699,900 Financial instruments owned 972,932 972,932 1,267,449 1,267,449 Available-for-sale securities 3,254,737 3,254,737 3,070,447 3,070,447 Held-to-maturity securities 2,856,219 2,827,883 4,218,854 4,122,907 Bank loans 9,624,042 9,801,986 8,517,615 8,565,347 Loans held for sale 389,693 389,693 205,557 205,557 Investments 79,972 79,972 67,982 67,982 Derivative contracts (1) 1,086 1,086 7,683 7,683 Financial liabilities: Securities sold under agreements to repurchase $ 391,634 $ 391,634 $ 535,394 $ 535,394 Bank deposits 15,332,581 14,467,894 15,863,613 14,661,996 Financial instruments sold, but not yet purchased 662,852 662,852 947,306 947,306 Federal Home Loan Bank advances 250,000 250,000 540,000 540,000 Borrowings 150 150 180,655 180,655 Senior notes 1,017,010 1,069,425 1,015,973 989,790 Debentures to Stifel Financial Capital Trusts 60,000 45,847 67,500 49,747 (1) The following table presents the estimated fair values of financial instruments not measured at fair value on a recurring basis for the periods indicated (in thousands) 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 — — Borrowings 150 150 — — Senior notes 1,069,425 1,069,425 — — Debentures to Stifel Financial Capital Trusts 45,847 — — 45,847 December 31, 2018 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 1,916,841 $ 1,916,841 $ — $ — Cash segregated for regulatory purposes 132,814 132,814 — — Securities purchased under agreements to resell 699,900 645,632 54,268 — Held-to-maturity securities 4,122,907 — 3,960,099 162,808 Bank loans 8,565,347 — 8,565,347 — Loans held for sale 205,557 — 205,557 — Financial liabilities: Securities sold under agreements to repurchase $ 535,394 $ 87,273 $ 448,121 $ — Bank deposits 14,661,996 — 14,661,996 — Federal Home Loan Bank advances 540,000 540,000 — — Borrowings 180,655 180,655 — — Senior notes 989,790 989,790 — — Debentures to Stifel Financial Capital Trusts 49,747 — — 49,747 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, 2019 and 2018. 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, 2019 and 2018 approximate fair value due to their short-term nature. Held-to-Maturity Securities Securities held to maturity are recorded at amortized cost based on our company’s positive intent and ability to hold these securities to maturity. Securities held to maturity include agency and commercial mortgage-backed securities, and 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 loans intended for sale. Loans held for sale are stated at lower of cost or fair value. Fair 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 would be made under current conditions 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, 2019 and 2018 approximate fair value due to the short-term nature. Bank Deposits The fair value for demand deposits is equal to the amount payable on demand at the reporting date (that is, their carrying amounts). The carrying amounts of variable-rate money-market and savings accounts approximate their fair values at the reporting date as these are short-term in nature. The fair value of other interest-bearing deposits, including certificates of deposit, was calculated by discounting the future cash flows using discount rates based on the expected current market rates for similar products with similar remaining terms. Borrowings The carrying amount of borrowings approximates fair value due to the relative short-term nature of such borrowings. In addition, Stifel Bancorp’s 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, 2019
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, 2019 and 2018, are as follows (in thousands) December 31, 2019 2018 Financial instruments owned: U.S. government securities $ 9,266 $ 42,121 U.S. government agency securities 66,881 72,532 Mortgage-backed securities: Agency 388,856 564,111 Non-agency 5,155 25,727 Asset-backed securities 28,385 25,905 Corporate securities: Fixed income securities 250,783 310,457 Equity securities 64,009 57,911 Sovereign debt 12,403 14,063 State and municipal securities 137,211 154,622 Loans 9,983 — $ 972,932 $ 1,267,449 Financial instruments sold, but not yet purchased: U.S. government securities $ 243,570 $ 534,817 U.S. government agency securities 1,000 32,755 Agency mortgage-backed securities 231,909 123,456 Corporate securities: Fixed income securities 140,100 208,725 Equity securities 32,047 36,117 Sovereign debt 13,271 11,429 State and municipal securities — 7 Loans 955 — $ 662,852 $ 947,306 At December 31, 2019 and 2018, financial instruments owned in the amount of $511.2 million and $669.0 million, respectively, were pledged as collateral (on a settlement-date basis) 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, 2019
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, 2019 and 2018 (in thousands) December 31, 2019 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated 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 December 31, 2018 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated Fair Value Available-for-sale securities U.S. government agency securities $ 5,237 $ 13 $ (35 ) $ 5,215 State and municipal securities 72,487 — (4,261 ) 68,226 Mortgage-backed securities: Agency 234,292 88 (3,972 ) 230,408 Commercial 74,411 4 (4,700 ) 69,715 Non-agency 1,245 — (26 ) 1,219 Corporate fixed income securities 958,406 — (26,802 ) 931,604 Asset-backed securities 1,779,496 672 (16,108 ) 1,764,060 $ 3,125,574 $ 777 $ (55,904 ) $ 3,070,447 Held-to-maturity securities (2) Mortgage-backed securities: Agency $ 1,198,442 $ 1,307 $ (31,689 ) $ 1,168,060 Commercial 51,524 185 — 51,709 Asset-backed securities 2,968,888 4,585 (70,335 ) 2,903,138 $ 4,218,854 $ 6,077 $ (102,024 ) $ 4,122,907 (1) Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive loss. (2) Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements. 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. For the year ended December 31, 2017, we received proceeds of $87.3 million from the sale of available for sale securities, which resulted in realized gains of $0.4 million. During the third quarter of 2019, the Company transferred certain mortgage-backed securities from the held-to-maturity category to available-for sale. As of August 1, 2019, 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 for the year ended December 31, 2019. During the year ended December 31, 2019, unrealized gains, net of deferred taxes, of $42.4 million were recorded in accumulated other comprehensive loss in the consolidated statements of financial condition. During the years ended December 31, 2018 and 2017, unrealized losses, net of deferred taxes , of $ million and unrealized gains, net of deferred taxes, of $ million, respectively, were recorded in accumulated other comprehensive loss in the consolidated statements of financial condition. The table below summarizes the amortized cost and fair values of debt securities by contractual maturity (in thousands) December 31, 2019 December 31, 2018 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Available-for-sale securities Within one year $ 6,861 $ 6,871 $ 5,872 $ 5,855 After one year through three years 229,184 229,760 234,101 227,951 After three years through five years 422,236 429,909 407,507 397,372 After five years through ten years 409,664 411,680 469,566 458,442 After ten years 2,186,096 2,176,517 2,008,528 1,980,827 $ 3,254,041 $ 3,254,737 $ 3,125,574 $ 3,070,447 Held-to-maturity securities After one year through three years — — 51,524 51,709 After five years through ten years 598,250 597,166 536,717 530,616 After ten years 2,257,969 2,230,717 3,630,613 3,540,582 $ 2,856,219 $ 2,827,883 $ 4,218,854 $ 4,122,907 The maturities of our available-for-sale (fair value) and held-to-maturity (amortized cost) securities at December 31, 2019, 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 $ 1,749 $ 3,318 $ — $ — $ 5,067 State and municipal securities — — 5,875 18,422 24,297 Mortgage-backed securities: Agency — 819 24,359 812,700 837,878 Commercial — 32,457 — 77,080 109,537 Non-agency — 8,792 — 966 9,758 Corporate fixed income securities 5,122 614,283 55,906 — 675,311 Asset-backed securities — — 325,540 1,267,349 1,592,889 $ 6,871 $ 659,669 $ 411,680 $ 2,176,517 $ 3,254,737 Held-to-maturity securities Asset-backed securities $ — $ — $ 598,250 $ 2,257,969 $ 2,856,219 (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, 2019 and 2018, securities of $801.5 million and $1.9 billion, 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, 2019 and 2018, securities of $816.1 million and $1.6 billion, respectively, were pledged with the Federal Reserve discount window. The following table shows the gross unrealized losses and fair value of the Company’s investment securities with unrealized losses, aggregated by investment category and length of time the individual investment securities have been in continuous unrealized loss positions, at December 31, 2019 (in thousands) Less than 12 months 12 months or more Total Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Mortgage-backed securities: Agency $ (4,571 ) $ 458,861 $ (1,280 ) $ 112,001 $ (5,851 ) $ 570,862 Commercial (694 ) 105,084 (20 ) 2,001 (714 ) 107,085 Non-agency — — (23 ) 966 (23 ) 966 Asset-backed securities $ (3,056 ) $ 349,095 (5,149 ) 596,161 $ (8,205 ) $ 945,256 $ (8,321 ) $ 913,040 $ (6,472 ) $ 711,129 $ (14,793 ) $ 1,624,169 Held-to-maturity securities Asset-backed securities $ (2,915 ) $ 346,069 $ (31,381 ) $ 1,980,673 $ (34,296 ) $ 2,326,742 At December 31, 2019, the amortized cost of 125 securities classified as available for sale exceeded their fair value by $14.8 million, of which $6.5 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, 2019, was $1.6 billion, which was 49.9% of our available-for-sale portfolio. At December 31, 2019, the carrying value of 125 securities held to maturity exceeded their fair value by $34.3 million, of which $31.4 million related to securities held to maturity that have been in a loss position for 12 months or longer. As discussed in more detail below, we conduct periodic reviews of all securities with unrealized losses to assess whether the impairment is other-than-temporary. Other-Than-Temporary Impairment We evaluate all securities in an unrealized loss position quarterly to assess whether the impairment is other-than-temporary. Our OTTI assessment is a subjective process requiring the use of judgments and assumptions. There was no credit-related OTTI recognized during the years ended December 31, 2019, 2018, and 2017. We believe the gross unrealized losses of $49.1 million related to our investment portfolio, as of December 31, 2019, are attributable to changes in market interest rates. We, therefore, do not expect to incur any credit losses related to these securities. In addition, we have no intent to sell these securities with unrealized losses, and it is not more likely than not that we will be required to sell these securities prior to recovery of the amortized cost. Accordingly, we have concluded that the impairment on these securities is not other-than-temporary.

Bank Loans

Bank Loans	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (in thousands, except percentages) December 31, 2019 December 31, 2018 Balance Percent Balance Percent Commercial and industrial $ 3,438,953 35.3 % $ 3,304,234 38.5 % Residential real estate 3,309,548 33.9 2,875,014 33.5 Securities-based loans 2,098,211 21.5 1,786,966 20.8 Commercial real estate 428,549 4.4 318,961 3.7 Construction and land 398,839 4.1 138,245 1.6 Home equity lines of credit 51,205 0.5 38,098 0.4 Other 27,311 0.3 120,129 1.5 Gross bank loans 9,752,616 100.0 % 8,581,647 100.0 % Unamortized loan discount, net (6,588 ) (12,155 ) Loans in process (27,717 ) 27,984 Unamortized loan fees, net 1,310 5,972 Allowance for loan losses (95,579 ) (85,833 ) Loans held for investment, net $ 9,624,042 $ 8,517,615 At December 31, 2019 and 2018, Stifel Bancorp had loans outstanding to its executive officers and directors and executive officers and directors of certain affiliated entities in the amount of $24.5 $28.8 At December 31, 2019 and 2018, we had loans held for sale of $389.7 million and $205.6 million, respectively. For the years ended December 31, 2019, 2018, and 2017, we recognized gains, included in other income in the consolidated statements of operations, of $ 13.1 At December 31, 2019 and 2018, loans, primarily consisting of residential and commercial real estate loans of $3.1 billion and $2.7 billion, respectively, were pledged at the Federal Home Loan Bank as collateral for borrowings. The following table details activity in the allowance for loan losses by portfolio segment for the years ended December 31, 2019 and 2018 (in thousands) 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 88 152 (106 ) 60 194 Qualitative 843 (640 ) — — 203 $ 85,833 $ 9,977 $ (386 ) $ 155 $ 95,579 Year Ended December 31, 2018 Beginning Balance Provision Charge- offs Recoveries Ending Balance Commercial and industrial $ 54,474 $ 13,896 $ (12 ) $ 9 $ 68,367 Residential real estate 8,430 2,798 — — 11,228 Securities-based loans 2,088 (110 ) — — 1,978 Commercial real estate 1,520 258 — — 1,778 Construction and land 100 1,141 — — 1,241 Home equity lines of credit 162 145 — 3 310 Other 16 71 (2 ) 3 88 Qualitative 676 167 — — 843 $ 67,466 $ 18,366 $ (14 ) $ 15 $ 85,833 The following table presents the unpaid principal 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 — 194 194 — 27,311 27,311 Qualitative — 203 203 — — — $ 8,182 $ 87,397 $ 95,579 $ 14,587 $ 9,738,029 $ 9,752,616 The following table presents the unpaid principal balances of loans and amount of allowance allocated based upon impairment method by portfolio segment at December 31, 2018 (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 $ 8,678 $ 59,689 $ 68,367 $ 23,677 $ 3,280,557 $ 3,304,234 Residential real estate 24 11,204 11,228 519 2,874,495 2,875,014 Securities-based loans — 1,978 1,978 — 1,786,966 1,786,966 Commercial real estate — 1,778 1,778 — 318,961 318,961 Construction and land — 1,241 1,241 — 138,245 138,245 Home equity lines of credit — 310 310 184 37,914 38,098 Other 1 87 88 21 120,108 120,129 Qualitative — 843 843 — — — $ 8,703 $ 77,130 $ 85,833 $ 24,401 $ 8,557,246 $ 8,581,647 In determining the amount of our allowance, we rely on an analysis of our loan portfolio, our experience, and our evaluation of general economic conditions. If our assumptions prove to be incorrect, our current allowance may not be sufficient to cover future loan losses and we may experience significant increases to our provision. There are two components of the allowance for loan losses: the inherent allowance component and the specific allowance component. The inherent allowance component of the allowance for loan losses is used to estimate the probable losses inherent in the loan portfolio and includes non-homogeneous loans that have not been identified as impaired and portfolios of smaller balance homogeneous loans. Our company maintains methodologies by loan product for calculating an allowance for loan losses that estimates the inherent losses in the loan portfolio. Qualitative and environmental factors, such as economic and business conditions, nature and volume of the portfolio and lending terms, and volume and severity of past due loans may also be considered in the calculations. The allowance for loan losses is maintained at a level reasonable to ensure that it can adequately absorb the estimated probable losses inherent in the portfolio. The specific allowance component of the allowance for loan losses is used to estimate probable losses for non-homogeneous exposures, including loans modified in a Troubled Debt Restructuring (TDR), which have been specifically identified for impairment analysis by our company and determined to be impaired. 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. At December 31, 2018, we had $24.4 million of impaired loans, net of discounts, which included $9.1 million in troubled debt restructurings. The specific allowance on impaired loans at December 31, 2018 was $8.7 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, 2019 and 2018, were insignificant to the consolidated financial statements. The tables below present loans that were individually evaluated for impairment by portfolio segment at December 31, 2019 and 2018, including the average recorded investment balance (in thousands) 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 December 31, 2018 Unpaid Contractual Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial and industrial $ 23,677 $ 242 $ 23,435 $ 23,677 $ 8,678 $ 23,807 Residential real estate 544 352 167 519 24 275 Home equity lines of credit 184 184 — 184 — 184 Other 694 11 10 21 1 70 Total $ 25,099 $ 789 $ 23,612 $ 24,401 $ 8,703 $ 24,336 The following tables present the aging of the recorded investment in past due loans at December 31, 2019 and 2018, by portfolio segment (in thousands) 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. December 31, 2018 30 - 89 Days Past Due 90 or More Days Past Due Total Past Due Current Balance Total Commercial and industrial $ — $ 14,656 $ 14,656 $ 3,289,578 3,304,234 Residential real estate 6,970 377 7,347 2,867,667 2,875,014 Securities-based loans — — — 1,786,966 1,786,966 Commercial real estate — — — 318,961 318,961 Construction and land — — — 138,245 138,245 Home equity lines of credit 33 — 33 38,065 38,098 Other — 134 134 119,995 120,129 Total $ 7,003 $ 15,167 $ 22,170 $ 8,559,477 $ 8,581,647 December 31, 2018 * Non-accrual Restructured Total Commercial and industrial $ 14,741 $ 8,936 $ 23,677 Residential real estate 352 167 519 Home equity lines of credit 184 — 184 Other 21 — 21 Total $ 15,298 $ 9,103 $ 24,401 * There were no loans past due 90 days and still accruing interest at December 31, 2018. Credit quality indicators As of December 31, 2019, 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, 2019 and 2018, 98.3% and 98.4% 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. Doubtful loans are considered impaired. Substandard loans are regularly reviewed for impairment. 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, credit card, and indirect lending. Based on the most recent analysis performed, the risk category of our loan portfolio was as follows: (in thousands) : 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 December 31, 2018 Pass Special Mention Substandard Doubtful Total Commercial and industrial $ 3,254,698 $ 34,795 $ 14,741 $ — $ 3,304,234 Residential real estate 2,874,495 — 519 — 2,875,014 Securities-based loans 1,786,966 — — — 1,786,966 Commercial real estate 318,961 — — — 318,961 Construction and land 138,245 — — — 138,245 Home equity lines of credit 37,914 — 184 — 38,098 Other 119,912 196 — 21 120,129 Total $ 8,531,191 $ 34,991 $ 15,444 $ 21 $ 8,581,647

Fixed Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Fixed Assets	NOTE 9 – Fixed Assets The following is a summary of fixed assets as of December 31, 2019 and 2018 (in thousands) December 31, 2019 2018 Office equipment $ 288,975 $ 251,542 Aircraft engine operating leases 206,315 214,065 Leasehold improvements 171,103 154,550 Building 58,804 55,342 725,197 675,499 Accumulated depreciation and amortization (343,032 ) (302,560 ) $ 382,165 $ 372,939 For the years ended December 31, 2019, 2018, and 2017, depreciation and amortization totaled $38.4 million, $27.9 million, and $32.5 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. As of December 31, 2019, minimum future payments under non-cancelable leases were (in thousands) 2020 $ 14,880 2021 12,240 2022 8,834 2023 6,517 2024 5,449 Thereafter 6,288 $ 54,208

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2019
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, 2018 Net Additions Write-off December 31, 2019 Goodwill Global Wealth Management $ 340,395 $ 4,586 $ — $ 344,981 Institutional Group 694,284 154,809 — 849,093 $ 1,034,679 $ 159,395 $ — $ 1,194,074 December 31, 2018 Net Additions Amortization December 31, 2019 Intangible assets Global Wealth Management $ 60,532 $ — $ (7,253 ) $ 53,279 Institutional Group 59,123 58,133 (8,762 ) 108,494 $ 119,655 $ 58,133 $ (16,015 ) $ 161,773 The adjustments to goodwill included in our Institutional Group segment during the year ended December 31, 2019, are primarily attributable to the acquisitions of First Empire on January 2, 2019, Mooreland on July 1, 2019, B&F on September 3, 2019, GKB on September 27, 2019, MainFirst on November 1, 2019, and GMP Capital on December 6, 2019. The allocation of the purchase price of these acquisitions are preliminary and will be finalized upon completion of the analysis of the fair values of the net assets as of the respective acquisition dates and the identified intangible assets. The final goodwill recorded on the consolidated statement of financial condition may differ from that reflected herein as a result of future measurement period adjustments and the recording of identified intangible assets. See Note 3 in the notes to our consolidated financial statements for additional information regarding our acquisitions. 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. The adjustments to goodwill included in our Global Wealth Management segment during the year ended December 31, 2019, are primarily attributable to the Business Bank acquisition, which closed on August 31, 2018. Amortizable intangible assets consist of acquired customer relationships, trade name, core deposits, investment banking backlog, and non-compete agreements that are amortized over their contractual or determined useful lives. Intangible assets as of December 31, 2019 and 2018, were as follows (in thousands) December 31, 2019 December 31, 2018 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Customer relationships $ 198,248 $ 75,987 $ 160,745 $ 65,254 Trade name 28,123 13,649 26,831 11,755 Core deposits 8,615 2,985 8,615 816 Non-compete agreements 8,319 2,828 2,603 1,452 Investment banking backlog 4,245 1,787 1,431 1,293 Acquired technology 840 93 — — Estimated GMP Capital intangibles (1) 10,712 — — — $ 259,102 $ 97,329 $ 200,225 $ 80,570 (1) Amortization expense related to intangible assets was $16.0 million, $12.6 million, and $12.1 million for the years ended December 31, 2019, 2018, and 2017, 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, 2019, are: customer relationships, 10.8 years; trade name, 10.0 years; core deposits, 4.2 years; non-compete agreements, 7.0 years; investment banking backlog, 8.8 years; and acquired technology, 2.7 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, 2019, we expect amortization expense in future periods to be as follows (in thousands) Fiscal year 2020 $ 18,796 2021 17,686 2022 16,310 2023 15,021 2024 14,034 Thereafter 77,808 $ 159,655

Borrowings and Federal Home Loa

Borrowings and Federal Home Loan Bank Advances	12 Months Ended
	Dec. 31, 2019
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, advances from the Federal Home Loan Bank, repurchase agreements, and securities lending arrangements. 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, 2019, totaled $835.0 million with four banks and are dependent on having appropriate collateral, as determined by the bank agreements, to secure an advance under the line. The availability of our uncommitted lines is subject to approval by the individual banks each time an advance is requested and may be denied. Our peak daily borrowing on our uncommitted secured lines was $276.0 million during the year ended December 31, 2019. 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, 2019, we had no outstanding balances on our uncommitted secured lines of credit. The Federal Home Loan advances of $250.0 million as of December 31, 2019, are floating-rate advances. The weighted average interest rates on these advances during the year ended December 31, 2019, was 1.76%. 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. Our committed bank line financing at December 31, 2019, 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, 2019, 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 2020 in which the lenders are a number of financial institutions. This committed unsecured borrowing facility provides for maximum borrowings of up to $250.0 million at variable rates of interest. At December 31, 2019, 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, 2019
Debt Disclosure [Abstract]
Senior Notes	NOTE 12 – Senior Notes The following table summarizes our senior notes as of December 31, 2019 and 2018 (in thousands) December 31, 2019 2018 4.250% senior notes, due 2024 (1) $ 500,000 $ 500,000 3.50% senior notes, due 2020 (2) 300,000 300,000 5.20% senior notes, due 2047 (3) 225,000 225,000 1,025,000 1,025,000 Debt issuance costs, net (7,990 ) (9,027 ) Senior notes, net $ 1,017,010 $ 1,015,973 ( 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 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 (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 . Interest on the senior notes is payable quarterly in arrears on January 15, April 15, July 15, and October 15. On or after October 15, 2022, we may redeem some or all of the senior notes at any time at a redemption price equal to 100 % of the principal amount of the notes being redeemed plus accrued interest thereon to the redemption date. On October 27, 2017, we completed the sale of an additional $ 25.0 million aggregate principal amount of Notes pursuant to the over-allotment option. Our senior notes mature as follows, based upon contractual terms (in thousands) 2020 $ 300,000 2021 — 2022 — 2023 — 2024 500,000 Thereafter 225,000 $ 1,025,000

Bank Deposits

Bank Deposits	12 Months Ended
	Dec. 31, 2019
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Bank Deposits	NOTE 13 – Bank Deposits Deposits consist of money market and savings accounts, certificates of deposit, and demand deposits. Deposits at December 31, 2019 and 2018, were as follows (in thousands) December 31, 2019 2018 Money market and savings accounts $ 13,530,670 $ 13,609,612 Demand deposits (interest-bearing) 1,113,296 392,765 Certificates of deposit 522,958 1,763,336 Demand deposits (non-interest-bearing) 165,657 97,900 $ 15,332,581 $ 15,863,613 The weighted-average interest rate on deposits was 0.64% and 0.60% at December 31, 2019 and 2018, respectively. Scheduled maturities of certificates of deposit at December 31, 2019 and 2018, were as follows (in thousands) December 31, 2019 2018 Certificates of deposit, less than $100,000: Within one year $ 5,305 $ 4,858 One to three years 360 623 Three to five years 13 140 $ 5,678 $ 5,621 Certificates of deposit, $100,000 and greater: Within one year $ 441,341 $ 1,535,784 One to three years 68,855 195,159 Three to five years 7,084 26,772 517,280 1,757,715 $ 522,958 $ 1,763,336 At December 31, 2019 and 2018, the amount of deposits includes related party deposits, primarily interest-bearing and time deposits of $6.7 million and $6.5 million, respectively. Brokerage customers’ deposits were $13.9 billion and $15.2 billion, respectively.

Derivative Instruments And Hedg

Derivative Instruments And Hedging Activities	12 Months Ended
	Dec. 31, 2019
General Discussion Of Derivative Instruments And Hedging Activities [Abstract]
Derivative Instruments And Hedging Activities	NOTE 14 – Derivative Instrum ents and Hedging Activities We use interest rate swaps as part of our interest rate risk management strategy. Interest rate swaps generally involve the exchange of fixed and variable rate interest payments between two parties, based on a common notional principal amount and maturity date with no exchange of underlying principal amounts. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for our company making fixed payments. Our 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 following table provides the notional values and fair values of our derivative instruments as of December 31, 2019 and 2018 (in thousands) December 31, 2019 Notional Value Balance Sheet Location Fair Value Derivative Assets Cash flow interest rate contracts $ 250,000 Other assets $ 1,086 December 31, 2018 Notional Value Balance Sheet Location Fair Value Derivative Assets Cash flow interest rate contracts $ 540,000 Other assets $ 7,683 Cash Flow Hedges We have entered into interest rate swap agreements that effectively modify our exposure to interest rate risk by converting floating rate debt to a fixed rate debt. The swaps have an average remaining life of 1.1 years. Any unrealized gains or losses related to cash flow hedging instruments are reclassified from accumulated other comprehensive loss into earnings in the same period the hedged forecasted transaction affects earnings and are recorded in interest expense in the consolidated statements of operations. The ineffective portion of the cash flow hedging instruments is recorded in other income or other operating expense in the consolidated statements of operations. Amounts reported in accumulated other comprehensive loss related to derivatives will be reclassified to interest expense as interest payments are made on our variable rate deposits. During the next twelve months, we estimate that $0.8 million will be reclassified as an increase to interest expense. The following table shows the effect of our company’s derivative instruments in the consolidated statements of operations for the years ended December 31, 2019, 2018, and 2017 (in thousands) Gain/(Loss) Recognized in OCI Gain/(loss) Reclassified From OCI Into Income Year Ended December 31, Year Ended December 31, 2019 2018 2017 2019 2018 2017 Cash flow interest rate contracts $ 2,641 $ (3,876 ) $ 1,085 $ 3,307 $ 4,947 $ (635 ) We maintain a risk management strategy that incorporates the use of derivative instruments to minimize significant unplanned fluctuations in earnings caused by interest rate volatility. Our goal is to manage sensitivity to changes in rates by hedging the maturity characteristics of variable rate affiliated deposits, thereby limiting the impact on earnings. By using derivative instruments, we are exposed to credit and market risk on those derivative positions. We manage the market risk associated with interest rate contracts by establishing and monitoring limits as to the types and degree of risk that may be undertaken. Credit risk is equal to the extent of the fair value gain in a derivative if the counterparty fails to perform. When the fair value of a derivative contract is positive, this generally indicates that the counterparty owes our company and, therefore, creates a repayment risk for our company. When the fair value of a derivative contract is negative, we owe the counterparty and, therefore, have no repayment risk. See Note 5 in the notes to our consolidated financial statements for further discussion on how we determine the fair value of our financial instruments. We minimize the credit (or repayment) risk in derivative instruments by entering into transactions with high-quality counterparties that are reviewed periodically by senior management. Credit Risk-Related Contingency Features We have agreements with our derivative counterparties containing provisions where if we default on any of our indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then we could also be declared in default on our derivative obligations. We have agreements with certain of our derivative counterparties that contain provisions where if our shareholders’ equity declines below a specified threshold or if we fail to maintain a specified minimum shareholders’ equity, then we could be declared in default on our derivative obligations. Certain of our agreements with our derivative counterparties contain provisions where if a specified event or condition occurs that materially changes our creditworthiness in an adverse manner, we may be required to fully collateralize our obligations under the derivative instrument. Regulatory Capital-Related Contingency Features Certain of our derivative instruments contain provisions that require us to maintain our capital adequacy requirements. If we were to lose our status as “adequately capitalized,” we would be in violation of those provisions, and the counterparties of the derivative instruments could request immediate payment or demand immediate and ongoing full overnight collateralization on derivative instruments in net liability positions. Counterparty Risk In the event of counterparty default, our economic loss may be higher than the uncollateralized exposure of our derivatives if we were not able to replace the defaulted derivatives in a timely fashion. We monitor the risk that our uncollateralized exposure to each of our counterparties for interest rate swaps will increase under certain adverse market conditions by performing periodic market stress tests. These tests evaluate the potential additional uncollateralized exposure we would have to each of these derivative counterparties assuming changes in the level of market rates over a brief time period.

Debentures To Stifel Financial

Debentures To Stifel Financial Capital Trusts	12 Months Ended
	Dec. 31, 2019
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust [Abstract]
Debentures To Stifel Financial Capital Trusts	NOTE 15 – Debentures to Stifel Financial Capital Trusts The following table summarizes our debentures to Stifel Financial Capital Trusts as of December 31, 2019 and 2018 (in thousands) December 31, 2019 2018 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, 2019
Offsetting [Abstract]
Disclosures About Offsetting Assets And Liabilities	NOTE 16 – 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, 2019 and 2018 (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, 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 As of December 31, 2018: Securities borrowing (1) $ 109,795 $ — $ 109,795 $ (57,328 ) $ (45,005 ) $ 7,462 Reverse repurchase agreements (2) 699,900 — 699,900 (365,822 ) (329,740 ) 4,338 Cash flow interest rate contracts 7,683 — 7,683 — — 7,683 $ 817,378 $ — $ 817,378 $ (423,150 ) $ (374,745 ) $ 19,483 (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 $385.3 million and $695.6 million at December 31, 2019 and 2018, respectively. The following table provides information about financial liabilities and derivative liabilities that are subject to offset as of December 31, 2019 and 2018 (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, 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 ) As of December 31, 2018: Securities lending (3) $ (392,163 ) $ — $ (392,163 ) $ 57,328 $ 325,110 $ (9,725 ) Repurchase agreements (4) (535,394 ) — (535,394 ) 365,822 169,572 — $ (927,557 ) $ — $ (927,557 ) $ 423,150 $ 494,682 $ (9,725 ) (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 $407.3 million and $558.6 million at December 31, 2019 and 2018, respectively.

Commitments, Guarantees, And Co

Commitments, Guarantees, And Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments, Guarantees, And Contingencies	NOTE 17 – 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, 2019, 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, 2019, the fair value of the TBA securities and the estimated fair value of the purchase commitments was $231.9 million. 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 24 in the notes to consolidated financial statements for further details. We have committed capital to certain entities, and these commitments generally have no specified call dates. We had $2.2 million of commitments outstanding at December 31, 2019. 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, 2019 and 2018, 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, 2019
Loss Contingency Information About Litigation Matters [Abstract]
Legal Proceedings	NOTE 18 – 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 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.

Regulatory Capital Requirements

Regulatory Capital Requirements	12 Months Ended
	Dec. 31, 2019
Regulatory Capital Requirements [Abstract]
Regulatory Capital Requirements	NOTE 19 – 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, 2019, Stifel had net capital of $369.6 million, which was 21.2% of aggregate debit items and $334.7 million in excess of its minimum required net capital. At December 31, 2019, 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, 2019, our international subsidiary’s capital and reserves were in excess of the financial resources requirement under the rules of the FCA. Our Canadian subsidiary, Stifel Nicolaus Canada Inc. (“SNC”), is subject to the regulatory supervision and requirements of the Investment Industry Regulatory Organization of Canada (“IIROC”). At December 31, 2019, 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 increases, 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, 2019, 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 $ 1,972,832 15.2 % $ 584,162 4.5 % $ 843,790 6.5 % Tier 1 capital 2,287,085 17.6 % 778,883 6.0 % 1,038,510 8.0 % Total capital 2,441,808 18.8 % 1,038,510 8.0 % 1,298,138 10.0 % Tier 1 leverage 2,287,085 10.0 % 917,167 4.0 % 1,146,459 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 $ 991,238 12.1 % $ 370,127 4.5 % $ 534,628 6.5 % Tier 1 capital 995,491 12.1 % 493,503 6.0 % 658,004 8.0 % Total capital 1,090,271 13.3 % 658,004 8.0 % 822,505 10.0 % Tier 1 leverage 995,491 7.1 % 559,104 4.0 % 698,880 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 $ 154,299 16.9 % $ 40,966 4.5 % $ 59,173 6.5 % Tier 1 capital 154,299 16.9 % 54,622 6.0 % 72,829 8.0 % Total capital 164,020 18.0 % 72,829 8.0 % 91,036 10.0 % Tier 1 leverage 154,299 7.1 % 86,876 4.0 % 108,595 5.0 %

Operating Leases

Operating Leases	12 Months Ended
	Dec. 31, 2019
Lessee Disclosure [Abstract]
Operating Leases	NOTE 20 – Operating Leases Our operating leases primarily relate to office space and office equipment with remaining lease terms of 1 to 11 years. At December 31, 2019, operating lease right-of-use assets were $725.8 million and included in fixed assets, net in the consolidated statements of financial condition, and lease liabilities were $707.0 million 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 year ended December 31, 2019 (in thousands) Operating lease cost $ 90,354 Short-term lease cost 1,479 Variable lease cost 79 Sublease income (4,761 ) Net lease cost $ 87,151 Operating lease costs, included in occupancy and equipment rental in the consolidated statements of operations, were $87.2 million for the year ended December 31, 2019. The table below summarizes other information related to our operating leases as of and for the year ended December 31, 2019 (in thousands) Operating lease cash flows $ 89,976 Weighted-average remaining lease term 11.4 years Weighted-average discount rate 4.58 % 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, 2019, (in thousands, except percentages) 2020 $ 94,093 2021 88,436 2022 86,594 2023 85,491 2024 83,517 Thereafter 479,986 Total undiscounted lease payments 918,117 Imputed interest (211,078 ) Total operating lease liabilities $ 707,039

Revenues From Contracts With Cu

Revenues From Contracts With Customers	12 Months Ended
	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Revenues From Contracts With Customers	NOTE 2 1 – Rev enues F rom Contracts W ith Customers The following table presents the Company’s total revenues separated between revenues from contracts with customers and other sources of revenues for the years ended December 31, 2019 and 2018 (in thousands) Year Ended December 31, 2019 2018 Revenues from contracts with customers: Commissions $ 667,494 $ 657,732 Investment banking 817,421 707,670 Asset management and service fees 848,035 806,175 Other 19,287 15,568 Total revenue from contracts with customers 2,352,237 2,187,145 Other sources of revenue: Interest 724,882 646,449 Principal transactions 404,751 351,378 Other 33,091 9,985 Total revenues $ 3,514,961 $ 3,194,957 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, 2019 and 2018 (in thousands) Year Ended December 31, 2019 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 477,401 $ 190,093 $ — $ 667,494 Capital raising (1) 37,915 331,527 — 369,442 Advisory fees (1) — 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 Year Ended December 31, 2018 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 472,135 $ 185,597 $ — $ 657,732 Capital raising (1) 31,293 304,895 — 336,188 Advisory fees (1) 81 371,401 — 371,482 Investment banking 31,374 676,296 — 707,670 Asset management 806,132 43 — 806,175 Other 11,625 — 3,943 15,568 Total 1,321,266 861,936 3,943 2,187,145 Primary Geographic Region: United States 1,321,266 725,251 3,943 2,050,460 United Kingdom — 130,979 — 130,979 Other — 5,706 — 5,706 $ 1,321,266 $ 861,936 $ 3,943 $ 2,187,145 (1 ) See Note 26 for further break-out of revenues by geography. Information on Remaining Performance Obli gations and Revenue Recognized F rom 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, 2019. 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, 2019. 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 $151.3 million and $116.7 million at December 31, 2019 and December 31, 2018, 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, 2019. 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, 2019 and December 31, 2018, was $11.3 million and $11.1 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, 2019
Banking And Thrift Interest [Abstract]
Interest Income and Interest Expense	NOTE 22 – Interest Income and Interest Expense The components of interest income and interest expense are as follows (in thousands) Year Ended December 31, 2019 2018 2017 Interest income: Loans held for investment, net $ 379,848 $ 300,541 $ 206,084 Investment securities 231,021 252,200 187,731 Margin balances 52,008 49,515 37,218 Financial instruments owned 23,528 21,407 17,563 Other 38,477 22,786 5,785 $ 724,882 $ 646,449 $ 454,381 Interest expense: Bank deposits $ 95,813 $ 82,256 $ 12,661 Senior notes 44,507 44,610 35,338 Federal Home Loan Bank advances 7,872 15,173 8,305 Other 29,739 28,037 13,726 $ 177,931 $ 170,076 $ 70,030

Employee Incentive, Deferred Co

Employee Incentive, Deferred Compensation, And Retirement Plans	12 Months Ended
	Dec. 31, 2019
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]
Employee Incentive, Deferred Compensation, and Retirement Plans	NOTE 23 – 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 3.3 million shares at December 31, 2019. Compensation expense associated with our stock-based compensation plans, included in compensation and benefits in the consolidated statements of operations for our company’s incentive stock award plans was $135.5 million, $111.8 million, and $246.7 million for the years ended December 31, 2019, 2018, and 2017, respectively. The tax benefit related to stock-based compensation was $11.9 million and $4.0 million for the years ended December 31, 2019 and 2018, respectively. As a result of the adoption of a new accounting standard on January 1, 2017, we recognized an excess tax benefit from stock-based compensation of $64.7 million for the year ended December 31, 2017. In response to the Tax Legislation that was enacted in December 2017, the Company offered certain associates the opportunity to participate in the conversion of certain restricted stock units into restricted stock pursuant to a Modification Award Agreement. Under the terms of the Modification Award Agreement, vesting of certain restricted stock will no longer be contingent upon continued employment but rather will vest so long as the associate is not engaged in certain competitive or soliciting activities as provided in the Wealth Accumulation Plan (the “Plan”). The conversion through acceptance of the Modification Agreement by the participating associates resulted in a charge of $ 55.9 million, which is included in compensation and benefits in the consolidated statement of operations for the year ended December 31, 2017. The fair value of these awards was based upon the closing price of our company’s common stock on the date of the grant of the awards. In December 2017, the Company accelerated the vesting of certain outstanding debenture awards, resulting in a charge of $51.4 million, which is included in compensation and benefits in the consolidated statement of operations for the year ended December 31, 2017. 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 five years. Our company grants Performance-based Restricted Stock Units (“PRSUs”) to certain of its executive officers. Under the terms of the grants, the number of PRSUs that will vest and convert to shares will be based on 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 A summary of unvested restricted equity award activity, which includes restricted stock units and restricted stock awards, for the year ended December 31, 2019, is presented below (in thousands, except weighted-average fair value) Weighted-average grant date fair value Unvested December 31, 2018 14,117 $ 46.75 Granted 2,871 49.60 Vested (2,656 ) 45.34 Cancelled (864 ) 43.87 Unvested December 31, 2019 13,468 $ 47.83 At December 31, 2019, there was approximately $448.4 million of unrecognized compensation cost for deferred awards, which is expected to be recognized over a weighted-average period of 2.8 years. The fair value of restricted stock units and restricted stock that vested or converted during the year ended December 31, 2019, was $120.4 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 the option to defer a certain percentage of their gross commissions. As stipulated by the Plan, the financial advisors will defer 5% of their gross commissions. The mandatory deferral will be split evenly between company restricted stock units and a company fixed-rate cash debenture. They have the option to defer an additional 1% of gross commissions into company stock units with a 25% matching contribution. 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 Employee Profit Sharing 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 “Plan”). Associates are permitted within limitations imposed by tax law to make pre-tax contributions to the Plan. We may match certain associate contributions or make additional contributions to the Plan at our discretion. Our contributions to profit sharing, included in compensation and benefits in the consolidated statements of operations, were $13.4 million, $12.8 million, and $7.1 million for the years ended December 31, 2019, 2018, and 2017, respectively.

Off-Balance Sheet Credit Risk

Off-Balance Sheet Credit Risk	12 Months Ended
	Dec. 31, 2019
Concentration Risks Types No Concentration Percentage [Abstract]
Off-Balance Sheet Credit Risk	NOTE 24 – 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, 2019 and 2018, the fair value of securities accepted as collateral where we are permitted to sell or repledge the securities was $2.3 billion and $2.4 billion, respectively, and the fair value of the collateral that had been sold or repledged was $391.6 million and $535.4 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. For a complete discussion of our activities related to derivative instruments, see Note 14 in the notes to consolidated financial statements. 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, 2019 and 2018, Stifel Bancorp had outstanding commitments to originate loans aggregating $384.5 million and $146.7 million, respectively. The commitments extended over varying periods of time, with all commitments at December 31, 2019, 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, 2019 and 2018, Stifel Bancorp had outstanding letters of credit totaling $38.3 million and $26.3 million, respectively. A majority of the standby letters of credit commitments at December 31, 2019, 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, 2019 and 2018, Stifel Bancorp had granted unused lines of credit to commercial and consumer borrowers aggregating $1.5 billion and $919.5 million, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Income Taxes	NOTE 25 – Income Taxes The provision for income taxes consists of the following (in thousands) Year Ended December 31, 2019 2018 2017 Current taxes: Federal $ 123,802 $ 89,971 $ (29,396 ) State 30,464 36,070 (334 ) Foreign 1,684 99 (1,734 ) 155,950 126,140 (31,464 ) Deferred taxes: Federal (7,027 ) 11,932 114,842 State 4,266 2,267 1,728 Foreign (4,037 ) 55 1,559 (6,798 ) 14,254 118,129 Provision for income taxes $ 149,152 $ 140,394 $ 86,665 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, 2019 2018 2017 Statutory rate $ 125,485 $ 112,215 $ 94,338 State income taxes, net of federal income tax 28,333 30,762 6,721 Change in uncertain tax position 2,661 (617 ) 1,544 Foreign tax rate difference (629 ) (318 ) (412 ) Excess tax benefit from stock-based compensation (9,670 ) (3,700 ) (57,431 ) Revaluation of deferred tax assets — (3,006 ) 42,443 Other, net 2,972 5,058 (538 ) $ 149,152 $ 140,394 $ 86,665 Tax effect of temporary differences and carryforwards that comprise significant portions of deferred tax assets and liabilities (in thousands) December 31, 2019 2018 Deferred tax assets: Lease liabilities $ 181,607 $ — Deferred compensation 80,389 74,916 Receivable reserves 33,199 30,252 Net operating loss carryforwards 28,781 29,699 Accrued expenses 26,166 19,832 Unrealized loss on investments — 10,635 Other 3,210 3,066 Total deferred tax assets 353,352 168,400 Valuation allowance (5,042 ) (3,944 ) 348,310 164,456 Deferred tax liabilities: Lease ROU asset (180,598 ) — Goodwill and other intangibles (46,625 ) (42,045 ) Depreciation (7,231 ) (6,629 ) Unrealized gain on investments (5,619 ) — Prepaid expenses (3,857 ) (3,774 ) (243,930 ) (52,448 ) Net deferred tax asset $ 104,380 $ 112,008 On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (“Tax Legislation”) was signed into law making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings as of December 31, 2017. In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which allows us to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. In accordance with SAB 118, we recorded an additional tax benefit of $3.0 million during 2018 for the re-measurement of certain deferred tax assets and liabilities based on the rates in which they are expected to reverse in the future. Our measurement of deferred tax taxes and our provisional analysis of the one-time repatriation transition tax is complete with no additional impact on current year earnings. Our net deferred tax asset at December 31, 2019, includes net operating loss carryforwards of $236.2 million that expire between 2024 and 2039. 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 $1.1 million. We believe the realization of the remaining net deferred tax asset of $104.4 million is more likely than not based on the ability to carry back losses against prior year taxable income for tax years before 2018 and carry forward net operating losses indefinitely after 2018, 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 $15.0 million and $8.4 million as of December 31, 2019 and 2018, respectively. At December 31, 2019, the Company did not have a tax receivable. At December 31, 2018, the Company did not have a tax receivable. As of December 31, 2019, 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, 2019 and 2018, we had $3.4 million and $0.3 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, 2019 and 2018, we had accrued interest and penalties of $0.2 million and $0.1 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, 2019, 2018, and 2017, was not significant. The following table summarizes the activity related to our company’s unrecognized tax benefits from January 1, 2017 to December 31, 2019 (in thousands) Year Ended December 31, 2019 2018 2017 Beginning balance $ 312 $ 3,180 $ 1,800 Increase related to prior year tax positions 2,173 4 3,036 Decrease related to prior year tax positions (54 ) (33 ) (287 ) Increase related to current year tax positions 956 191 — Decrease related to settlements with taxing authorities — (3,030 ) (171 ) Decrease related to lapsing of statute of limitations — — (1,198 ) Ending balance $ 3,387 $ 312 $ 3,180 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, 2019
Segment Reporting [Abstract]
Segment Reporting	NOTE 26 – 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, 2019, 2018, and 2017, is as follows (in thousands) Year Ended December 31, 2019 2018 2017 Net revenues: (1) Global Wealth Management $ 2,130,559 $ 1,990,319 $ 1,822,218 Institutional Group 1,214,017 1,055,495 1,110,768 Other (7,546 ) (20,933 ) (6,554 ) $ 3,337,030 $ 3,024,881 $ 2,926,432 Income/(loss) before income taxes: Global Wealth Management $ 785,960 $ 737,003 $ 626,906 Institutional Group 175,670 157,051 217,981 Other (362,492 ) (359,692 ) (575,351 ) $ 599,138 $ 534,362 $ 269,536 (1) No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2019, 2018, and 2017. The following table presents our company’s total assets on a segment basis at December 31, 2019 and 2018 (in thousands) December 31, 2019 2018 Global Wealth Management $ 20,675,580 $ 21,040,224 Institutional Group 3,668,723 3,238,617 Other 265,922 240,757 $ 24,610,225 $ 24,519,598 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, 2019, 2018, and 2017, were as follows (in thousands): Year Ended December 31, 2019 2018 2017 United States $ 3,154,285 $ 2,855,955 $ 2,783,175 United Kingdom 163,552 156,557 129,288 Other 19,193 12,369 13,969 $ 3,337,030 $ 3,024,881 $ 2,926,432

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 27 – 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, 2019, 2018, and 2017 (in thousands, except per share data) Year Ended December 31, 2019 2018 2017 Net income applicable to Stifel Financial Corp. $ 448,396 $ 393,968 $ 182,871 Preferred dividends 17,319 9,375 9,375 Net income available to common shareholders $ 431,077 $ 384,593 $ 173,496 Shares for basic and diluted calculation: Average shares used in basic computation 71,998 71,786 68,562 Dilutive effect of stock options and units (1) 6,587 9,535 12,473 Average shares used in diluted computation 78,585 81,321 81,035 Earnings per common share: Basic $ 5.99 $ 5.36 $ 2.53 Diluted $ 5.49 $ 4.73 $ 2.14 (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, 2019, 2018, and 2017, the anti-dilutive effect from restricted stock units was immaterial. Cash Dividends During the year ended December 31, 2019, we declared and paid cash dividends of $0.60 per common share. During the year ended December 31, 2018, we declared and paid cash dividends of $0.48 per common share. During the year ended December 31, 2017, we declared and paid cash dividends of $0.20 per common share.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Shareholders' Equity	NOTE 28 – Share holders’ 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, 2019, the maximum number of shares that may yet be purchased under this plan was 5.1 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, 2019, we repurchased $ 215.4 170.2 Issuance of Common Stock from Treasury During the years ended December 31, 2019 and 2018, we issued 1.4 million and 0.5 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. On January 3, 2017, we issued 0.2 million shares related to the purchase of City Securities, Inc. See Note 3 in the notes to consolidated financial statements for additional information regarding the acquisition. Issuance of Preferred Stock 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, or following a regulatory capital treatment event, as defined. On July 11, 2016, our company issued $150.0 million of perpetual 6.25% Non-Cumulative Perpetual Preferred Stock, Series A, $1.00 par value, with a liquidation preference of $25,000 per share (equivalent to $25 liquidation preference per depositary share). When, as, and if declared by the board of directors of the company, dividends will be payable at an annual rate of 6.25%, payable quarterly, in arrears. We may redeem the Series A preferred stock at our option, subject to regulatory approval, on or after July 15, 2021, or following a regulatory capital treatment event, as defined.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2019
Variable Interest Entity Not Primary Beneficiary Disclosures [Abstract]
Variable Interest Entities	NOTE 29 – Variable Interest Entities Our company’s involvement with VIEs is limited to entities used as investment vehicles, the establishment of Stifel Financial Capital Trusts, and the ownership of a securitization that purchases, leases, and disposes of aircraft engines. 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 $258.2 million at December 31, 2019. 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, 2019, 2018, and 2017. In addition, our direct investment interest in these entities is insignificant at December 31, 2019 and 2018. 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. Securitization Interests On July 31, 2018, the Company purchased 100% of the share capital of Jet Holding S.a.r.l. (“Jet Holdings”), which is the owner of 100% of the outstanding E-Certificates in FAN Engine Securitization Ltd. (“FAN”). FAN is a securitization which purchases, leases, and disposes of commercial aircraft engines. As of the acquisition date, FAN owned 24 leased aircraft engines through common law trusts and FAN Leasing Dublin Limited, all of which are wholly owned subsidiaries of FAN. As the holder of the E-Certificate, our obligation to absorb losses is limited to the equity at risk (in this instance the consideration paid to acquire the E-Certificate). The residual returns that could be potentially generated by the activities of FAN are not pro rata with our ownership interests in the securitization. As Jet Holdings maintained significant power and benefits of FAN through the E-Certificate and other contractual rights, on the acquisition date, our company was considered the primary beneficiary, and Jet Holdings and FAN were consolidated. On May 1, 2019, the holders of the Series A Notes issued a Written Direction to Give Default Notice to Deutsche Bank Trust. The Event of Default Notice, which accelerated the amortization on the repayment of the debt, materially altered the cash flows and benefits available to our company as the holder of the E-Certificate. Based on the structural changes of the securitization interests, the Company concluded that it was no longer the primary beneficiary of the variable interest; therefore, Jet Holdings and FAN were deconsolidated on July 1, 2019. The impact of the deconsolidation was immaterial to the consolidated financial statements.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	NOTE 30 – 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.

Quarterly Financial Information

Quarterly Financial Information	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	NOTE 31 – Quarterly Financial Information (Unaudited) 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 income 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 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 $ 1.35 $ 1.43 $ 1.47 $ 1.79 Diluted $ 1.22 $ 1.31 $ 1.34 $ 1.62 Cash dividends declared per common share $ 0.15 $ 0.15 $ 0.15 $ 0.15 Weighted-average number of common shares outstanding: Basic 71,700 72,519 71,197 70,470 Diluted 79,210 79,079 78,144 77,813 Year Ended December 31, 2018 ($ in thousands, except per share amounts) 1 st 2 nd 3 rd 4 th Operating revenues $ 639,077 $ 625,590 $ 617,050 $ 666,791 Interest income 137,734 154,421 169,760 184,534 Total revenues 776,811 780,011 786,810 851,325 Interest expense 26,453 37,279 48,468 57,876 Net revenues 750,358 742,732 738,342 793,449 Total non-interest expenses 630,804 624,385 597,812 637,518 Income before income tax expense 119,554 118,347 140,530 155,931 Provision for income taxes 30,793 31,060 36,672 41,869 Net income 88,761 87,287 103,858 114,062 Preferred dividends 2,344 2,344 2,343 2,344 Net income available to common shareholders $ 86,417 $ 84,943 $ 101,515 $ 111,718 Earnings per common share: Basic $ 1.20 $ 1.18 $ 1.41 $ 1.56 Diluted $ 1.06 $ 1.04 $ 1.25 $ 1.38 Cash dividends declared per common share $ 0.12 $ 0.12 $ 0.12 $ 0.12 Weighted-average number of common shares outstanding: Basic 71,999 71,692 71,919 71,666 Diluted 81,789 81,299 81,484 80,706

Nature of Operations and Basi_2

Nature of Operations and Basis Of Presentation (Policies)	12 Months Ended
	Dec. 31, 2019
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 (“KBW”), Stifel Bancorp, Inc. (“Stifel Bancorp”), 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 December 9, 2019, the Company announced that it reached an agreement to sell Ziegler Capital Management, LLC (“ZCM”), a wholly owned asset management subsidiary. The assets and liabilities of ZCM have been classified as held for sale and are included in other assets and accounts payable and accrued expenses, respectively, at December 31, 2019. 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 represents a 27.5% third-party ownership of North Shore Aviation Holdings LLC (“North Shore”), a consolidated subsidiary of the Company that, through its subsidiary, owns airplane engines. See Note 20 for additional information on operating leases. We also 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. In determining whether to consolidate these entities, we evaluate whether the entity is a voting interest entity or a variable interest entity (“VIE”). When we do not have a controlling interest in an entity, but we exert significant influence over the entity, we apply the equity method of accounting.
Voting Interest Entity	Voting Interest Entity – Voting interest entities are entities that have (i) total equity investment at risk sufficient to fund expected future operations independently, and (ii) equity holders who have the obligation to absorb losses or receive residual returns and the right to make decisions about the entity’s activities. We consolidate voting interest entities when we determine that there is a controlling financial interest, usually ownership of all, or a majority of, the voting interest.
Variable Interest Entity	Variable Interest Entity – VIEs are entities that lack one or more of the characteristics of a voting interest entity. We are required to consolidate certain VIEs in which we have the power to direct the activities of the entity and the obligation to absorb significant losses or receive significant benefits. In other cases, we consolidate VIEs when we are deemed to be the primary beneficiary. The primary beneficiary is defined as the entity that has a variable interest, or a combination of variable interests, that maintains control and receives benefits or will absorb losses that are not pro rata with its ownership interests. The determination as to whether an entity is a VIE is based on the structure and nature of the entity. We also consider other characteristics, such as the ability to influence the decision-making relative to the entity’s activities and how the entity is financed. With the exception of entities eligible for the deferral codified in Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2010-10, “Consolidation: Amendments for Certain Investment Funds” (“ASU 2010-10”) (generally asset managers and investment companies), ASC 810 states that a controlling financial interest in an entity is present when an enterprise has a variable interest, or combination of variable interests, that have both 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. Entities meeting the deferral provision defined by ASU 2010-10 are evaluated under the historical VIE guidance. Under the historical guidance, a controlling financial interest in an entity is present when an enterprise has a variable interest, or combination of variable interests, that will absorb a majority of the entity’s expected losses, receive a majority of the entity’s expected residual returns, or both. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. We determine whether we are the primary beneficiary of a VIE by first performing a qualitative 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. Where a qualitative analysis is not conclusive, we perform a quantitative analysis. We reassess our initial evaluation of an entity as a VIE and our initial determination of whether we are the primary beneficiary of a VIE upon the occurrence of certain reconsideration events. See Note 29 for additional information on VIEs.

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
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, 2019.
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 agency and commercial mortgage-backed securities, and asset-backed securities, consisting of collateralized loan obligation securities and student loan ARS. We evaluate all securities in an unrealized loss position quarterly to assess whether the impairment is other-than-temporary. Our other-than-temporary impairment (“OTTI”) assessment is a subjective process requiring the use of judgments and assumptions. Accordingly, we consider a number of qualitative and quantitative criteria in our assessment, including the extent and duration of the impairment, recent events specific to the issuer and/or industry to which the issuer belongs, the payment structure of the security, external credit ratings and the failure of the issuer to make scheduled interest or principal payments, the value of underlying collateral, current market conditions, and our company’s ability and intent to hold the investment until its value recovers or the securities mature. We may determine that the decline in fair value of an investment is other-than-temporary if our analysis of these factors indicates that we will not recover our investment in the securities. If we determine that impairment on our debt securities is other-than-temporary and we have made the decision to sell the security or it is more likely than not that we will be required to sell the security prior to recovery of its amortized cost basis, we recognize the entire portion of the impairment in earnings. If we have not made a decision to sell the security and we do not expect that we will be required to sell the security prior to recovery of the amortized cost basis, we recognize only the credit component of OTTI in other operating expenses in the consolidated statements of operations. The remaining unrealized loss due to factors other than credit, or the non-credit component, is recorded in accumulated other comprehensive loss. We determine the credit component based on the difference between the security’s amortized cost basis and the present value of its expected future cash flows, discounted based on the purchase yield. The non-credit component represents the difference between the security’s fair value and the present value of expected future cash flows. We estimate the portion of loss attributable to credit using a discounted cash flow model. Key assumptions used in estimating the expected cash flows include default rates, loss severity, and prepayment rates. Assumptions used can vary widely based on the collateral underlying the securities and are influenced by factors such as collateral type, loan interest rate, geographical location of the borrower, and borrower characteristics. Unrealized gains and losses on our available-for-sale securities are reported, net of taxes, in accumulated other comprehensive 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 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 and Allowance for Loan Losses 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. We regularly review the loan portfolio and have established an allowance for loan losses for inherent losses estimated to have occurred in the loan portfolio through a provision for loan losses charged to other operating expenses in the consolidated statements of operations. In providing for the allowance for loan losses, we consider historical loss experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, the selection of proxy data used in developing loss rates, and prevailing economic and business conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. 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. 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.
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, 2019 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. If the individual leaves before the term of the loan expires or fails to meet certain performance standards, the individual is required to repay the balance. In determining the allowance for doubtful receivables from former associates, management considers the facts and circumstances surrounding each receivable, including the amount of the unforgiven balance, the reasons for the terminated employment relationship, and the former associates’ overall financial situation.
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 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. We do not use derivatives for trading or speculative purposes and, at December 31, 2019, all of our derivatives are designated as cash flow hedges. See Note 14 for additional details.
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 had historically been deferred until reimbursed by the client, the related fee revenue was recognized or the engagement was otherwise concluded. 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 had historically been recorded net of client reimbursements and/or netted against revenues. All investment banking 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 no longer recorded net of client reimbursements and 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, 2019, 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 20 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 25 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 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 Goodwill Impairment Testing In January 2017, the FASB issued ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment,” 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 accounting update is effective for annual or any interim impairment tests in fiscal years beginning after December 15, 2019 (January 1, 2020, for our company) and early adoption is permitted. The adoption of the accounting update is not expected to have a material impact on our consolidated financial statements. Financial Instruments – Credit Losses In June 2016, the FASB issued ASU 2016-13, “Financial Instruments − Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13).” This accounting update impacts the impairment model for certain financial assets measured at amortized cost by requiring a current expected credit loss (“CECL”) methodology to estimate expected credit losses over the entire life of the financial asset, recorded at inception or purchase. CECL will replace the loss model currently applicable to bank loans, held-to-maturity securities, and other receivables carried at amortized cost. The accounting update also eliminates the concept of other-than-temporary impairment for available-for-sale securities. Impairments on available-for-sale securities will be required to be recognized in earnings through an allowance, when the fair value is less than amortized cost and a credit loss exists or the securities are expected to be sold before recovery of amortized cost. Under the accounting update, there may be an ability to determine there are no expected credit losses in certain circumstances, e.g., based on collateral arrangements for lending and financing transactions or based on the credit quality of the borrower or issuer. Expected credit losses, including losses on off-balance sheet exposures, such as lending commitments, will be measured based on historical experience, current conditions, and forecasts that affect the collectability of the reported amount. Overall, the amendments in this accounting update are expected to accelerate the recognition of credit losses for portfolios where CECL models will be applied. In April 2019, the FASB issued ASU No. 2019-04, “Codification Improvements to Topic 326, Financial Instruments - The accounting update provides guidance on how companies will estimate expected credit losses by incorporating (1) expected recoveries of financial assets, including recoveries of amounts expected to be written off and those previously written off, and (2) clarifying that contractual extensions or renewal options that are not unconditionally cancellable by the lender are considered when determining the contractual term over which expected credit losses are measured. In May 2019, the FASB issued ASU No. 2019-05, “Financial Instruments - In November 2019, the FASB issued ASU No. 2019-11, “Codification Improvements to Topic 326, Financial Instruments – Credit Losses,” which clarifies the treatment of expected recoveries for amounts previously written off on purchased receivables, provides transition relief for troubled debt restructurings, and allows for certain disclosure simplifications of accrued interest. We will adopt the ASUs using a modified retrospective approach on January 1, 2020. The adoption of the accounting update is not expected to have a material impact on our consolidated financial statements. Upon adoption of ASU 2016-13, the Company expects the reserve for credit losses to be in the range of $107.5 million to $120.5 million. This range incorporates the reserve for credit losses for all material funded and unfunded financial assets and other receivables. This balance is impacted by the economic environment, the size and type of loan portfolios held by our company on the date of adoption, and other management judgments that impact the quantitative and qualitative assumptions that estimate the expected credit losses of financial assets. 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 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. Statement of Cash Flow In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flow - Restricted Cash,” which adds or clarifies guidance on the classification and presentation of restricted cash in the statement of cash flows. The accounting update is effective for the fiscal year beginning after December 15, 2017. We adopted the guidance in the update on January 1, 2018. The adoption of the accounting update did not have a material impact on our consolidated statement of cash flows. Upon adoption of the accounting update, we recorded an increase of $17.6 million in net cash provided by operating activities for the year ended December 31, 2017, related to reclassifying the changes in our cash segregated for regulatory purposes and restricted cash balance from operating activities to the cash and cash equivalent balances within the consolidated statements of cash flows. In August 2016, the FASB issued ASU 2016-15, “Classification of Certain Cash Receipts and Cash Payments,” which amends and clarifies the current guidance to reduce diversity in practice of the classification of certain cash receipts and payments in the consolidated statements of cash flows. The accounting update is effective for the fiscal year beginning after December 31, 2017. We adopted the guidance in the update on January 1, 2018. The adoption of the accounting update did not have a material impact on our consolidated statements of cash flows. Financial Assets and Financial Liabilities In January 2016, the FASB issued ASU 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” that changes the income statement impact of equity investments held by an entity, and the recognition of changes in fair value of financial liabilities when the fair value option is elected. The accounting update also amends certain disclosure requirements associated with the fair value of financial instruments. The accounting update is effective for fiscal years beginning after December 15, 2017. We adopted the guidance in the update on January 1, 2018. The adoption of the accounting update did not have a material impact on our consolidated financial statements. Revenue Recognition In May 2014, the FASB issued ASU 2014-09, “Revenue From Contracts With Customers (Topic 606),” (“ASU 2014-09”) that supersedes current revenue recognition guidance, including most industry-specific guidance. ASU 2014-09, as amended, requires a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods and services. The guidance also requires additional disclosures regarding the nature, amount, timing, and uncertainty of revenue that is recognized. Effective January 1, 2018, the Company adopted ASU 2014-09, which provides accounting guidance on the recognition of revenues from contracts and requires gross presentation of certain costs that were previously offset against revenue. This change was applied prospectively from January 1, 2018, and there is no impact on our previously presented results. The adoption of the new revenue standard resulted in a reduction of beginning retained earnings of $4.2 million after-tax as a cumulative effect of adoption of an accounting change. The impact of adoption is primarily related to investment banking revenues that were previously recognized in prior periods, which are now being deferred under the new revenue standard. With the adoption of the revenue recognition standard on January 1, 2018, capital-raising and advisory fee revenues are no longer presented net of the related reimbursable deal expenses. As a result, capital-raising and advisory fee revenues and other operating expenses are higher in 2018 by an identical $33.8 million, with no impact to net income. The scope of the accounting update does not apply to revenue associated with financial instruments, and as a result, does not have an impact on the elements of our consolidated statements of operations most closely associated with financial instruments, including principal transaction revenues, interest income, and interest expense.

Receivables From And Payables_2

Receivables From And Payables To Brokers, Dealers And Clearing Organizations (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018, included (in thousands) December 31, 2019 2018 Receivables from clearing organizations $ 471,122 $ 320,277 Deposits paid for securities borrowed 135,373 109,795 Securities failed to deliver 21,295 85,502 $ 627,790 $ 515,574
Amounts Payable To Brokers, Dealers, And Clearing Organizations	Amounts payable to brokers, dealers, and clearing organizations at December 31, 2019 and 2018, included (in thousands) December 31, 2019 2018 Deposits received from securities loaned $ 608,333 $ 392,163 Payable to clearing organizations 78,702 12,161 Securities failed to receive 25,256 27,975 $ 712,291 $ 432,299

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Schedule Of Fair Value Of Investments In And Unfunded Commitments To Funds Measured At Net Asset Value	December 31, 2019 December 31, 2018 Fair value of investments Unfunded commitments Fair value of investments Unfunded commitments Money market funds $ 25,734 $ — $ 19,719 $ — Mutual funds 7,875 — 9,122 — Private equity funds 2,288 1,203 3,461 1,480 Partnership interests 3,058 953 3,976 1,024 Total $ 38,955 $ 2,156 $ 36,278 $ 2,504
Fair Value Of Assets And Liabilities Measured On Recurring Basis	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 — Mortgage-backed securities: Agency 388,856 — 388,856 — Non-agency 5,155 — 5,155 — Asset-backed securities 28,385 — 28,210 175 Corporate securities: Fixed income securities 250,783 872 249,911 — Equity securities 64,009 61,579 2,430 — Sovereign debt 12,403 — 12,403 — State and municipal securities 137,211 — 137,211 — Loans 9,983 — 832 9,151 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: Equity securities 14,243 — — 14,243 Municipal securities 654 — 470 184 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 (1) 1,086 — 1,086 — $ 4,334,461 $ 115,645 $ 4,154,195 $ 25,666 (1) 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 $ — $ — U.S. government agency securities 1,000 — 1,000 — Agency mortgage-backed securities 231,909 — 231,909 — Corporate securities: Fixed income securities 140,100 633 139,467 — Equity securities 32,047 32,047 — — Sovereign debt 13,271 — 13,271 — Loans 955 — — 955 Total financial instruments sold, but not yet purchased $ 662,852 $ 276,250 $ 385,647 $ 955 Assets and liabilities measured at fair value on a recurring basis as of December 31, 201 8 , are presented below (in thousands) : December 31, 2018 Total Level 1 Level 2 Level 3 Financial instruments owned: U.S. government securities $ 42,121 $ 42,121 $ — $ — U.S. government agency securities 72,532 — 72,532 — Mortgage-backed securities: Agency 564,111 — 564,111 — Non-agency 25,727 — 25,726 1 Asset-backed securities 25,905 — 25,730 175 Corporate securities: Fixed income securities 310,457 1,100 309,357 — Equity securities 57,911 57,125 786 — Sovereign debt 14,063 — 14,063 — State and municipal securities 154,622 — 154,622 — Total financial instruments owned 1,267,449 100,346 1,166,927 176 Available-for-sale securities: U.S. government agency securities 5,215 417 4,798 — State and municipal securities 68,226 — 68,226 — Mortgage-backed securities: Agency 230,408 — 230,408 — Commercial 69,715 — 69,715 — Non-agency 1,219 — 1,219 — Corporate fixed income securities 931,604 — 931,604 — Asset-backed securities 1,764,060 — 1,764,060 — Total available-for-sale securities 3,070,447 417 3,070,030 — Investments: Corporate equity securities 33,046 31,670 1,376 — Auction rate securities: Equity securities 16,632 — — 16,632 Municipal securities 704 — — 704 Other 1,041 — 184 857 Investments in funds and partnerships measured at NAV 16,559 Total investments 67,982 31,670 1,560 18,193 Cash equivalents measured at NAV 19,719 Derivative contracts (1) 7,683 — 7,683 — $ 4,433,280 $ 132,433 $ 4,246,200 $ 18,369 (1) Included in other assets in the consolidated statements of financial condition. December 31, 2018 Total Level 1 Level 2 Level 3 Liabilities: Financial instruments sold, but not yet purchased: U.S. government securities $ 534,817 $ 534,817 $ — $ — U.S. government agency securities 32,755 — 32,755 — Agency mortgage-backed securities 123,456 — 123,456 — Corporate securities: Fixed income securities 208,725 1,289 207,436 — Equity securities 36,117 35,398 719 — Sovereign debt 11,429 — 11,429 — State and municipal securities 7 — 7 — Total financial instruments sold, but not yet purchased $ 947,306 $ 571,504 $ 375,802 $ —
Schedule Of Changes In Fair Value Associated With Level 3 Financial Instruments	Year Ended December 31, 2019 Financial instruments owned Investments Mortgage- Backed Securities – Non-Agency Asset-Backed Securities Loans Corporate Equity Securities Auction Rate Securities – Equity Auction Rate Securities – Municipal Other Balance at December 31, 2018 $ 1 $ 175 $ — $ — $ 16,632 $ 704 $ 857 Unrealized gains/(losses): Included in changes in net assets (1) — 2 — — 261 — — Realized gains/(losses) (1) (1 ) — 452 — — — — Purchases — — 24,316 — — — — Sales — — (16,081 ) — — — — Redemptions — (2 ) (1 ) — (2,650 ) (50 ) (4 ) Transfers: Into Level 3 — — 465 1,060 — — — Out of Level 3 — — — — — (470 ) — Net change (1 ) — 9,151 1,060 (2,389 ) (520 ) (4 ) Balance at December 31, 2019 $ — $ 175 $ 9,151 $ 1,060 $ 14,243 $ 184 $ 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 change in fair value associated with Level 3 financial instruments sold, but not yet purchased during the year ended December 31, 2019 is attributable to sales during 2019. The following table summarizes the changes in fair value associated with Level 3 financial instruments during the year ended December 31, 201 8 (in thousands) : Year Ended December 31, 2018 Financial instruments owned Investments Mortgage- Backed Securities – Non-Agency Asset-Backed Securities Fixed Income Securities Equity Securities Auction Rate Securities – Equity Auction Rate Securities – Municipal Other Balance at December 31, 2017 $ 1 $ 357 $ 242 $ 253 $ 34,789 $ 846 $ 857 Unrealized gains/(losses): Included in changes in net assets (1) — (164 ) — (130 ) 1,193 8 — Realized gains (1) — — — 21 — — — Purchases — — — — — — — Sales — — — (144 ) — — — Redemptions — (18 ) (242 ) — (19,350 ) (150 ) — Transfers: Into Level 3 — — — — — — — Out of Level 3 — — — — — — — Net change — (182 ) (242 ) (253 ) (18,157 ) (142 ) — Balance at December 31, 2018 $ 1 $ 175 $ — $ — $ 16,632 $ 704 $ 857 (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, 2019 December 31, 2018 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Cash and cash equivalents $ 1,142,596 $ 1,142,596 $ 1,936,560 $ 1,936,560 Cash segregated for regulatory purposes 131,374 131,374 132,814 132,814 Securities purchased under agreements to resell 385,008 385,008 699,900 699,900 Financial instruments owned 972,932 972,932 1,267,449 1,267,449 Available-for-sale securities 3,254,737 3,254,737 3,070,447 3,070,447 Held-to-maturity securities 2,856,219 2,827,883 4,218,854 4,122,907 Bank loans 9,624,042 9,801,986 8,517,615 8,565,347 Loans held for sale 389,693 389,693 205,557 205,557 Investments 79,972 79,972 67,982 67,982 Derivative contracts (1) 1,086 1,086 7,683 7,683 Financial liabilities: Securities sold under agreements to repurchase $ 391,634 $ 391,634 $ 535,394 $ 535,394 Bank deposits 15,332,581 14,467,894 15,863,613 14,661,996 Financial instruments sold, but not yet purchased 662,852 662,852 947,306 947,306 Federal Home Loan Bank advances 250,000 250,000 540,000 540,000 Borrowings 150 150 180,655 180,655 Senior notes 1,017,010 1,069,425 1,015,973 989,790 Debentures to Stifel Financial Capital Trusts 60,000 45,847 67,500 49,747 (1)
Estimated Fair Values Of Financial Instruments Not Measured At Fair Value	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 — — Borrowings 150 150 — — Senior notes 1,069,425 1,069,425 — — Debentures to Stifel Financial Capital Trusts 45,847 — — 45,847 December 31, 2018 Total Level 1 Level 2 Level 3 Financial assets: Cash $ 1,916,841 $ 1,916,841 $ — $ — Cash segregated for regulatory purposes 132,814 132,814 — — Securities purchased under agreements to resell 699,900 645,632 54,268 — Held-to-maturity securities 4,122,907 — 3,960,099 162,808 Bank loans 8,565,347 — 8,565,347 — Loans held for sale 205,557 — 205,557 — Financial liabilities: Securities sold under agreements to repurchase $ 535,394 $ 87,273 $ 448,121 $ — Bank deposits 14,661,996 — 14,661,996 — Federal Home Loan Bank advances 540,000 540,000 — — Borrowings 180,655 180,655 — — Senior notes 989,790 989,790 — — Debentures to Stifel Financial Capital Trusts 49,747 — — 49,747

Financial Instruments Owned A_2

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018, are as follows (in thousands) December 31, 2019 2018 Financial instruments owned: U.S. government securities $ 9,266 $ 42,121 U.S. government agency securities 66,881 72,532 Mortgage-backed securities: Agency 388,856 564,111 Non-agency 5,155 25,727 Asset-backed securities 28,385 25,905 Corporate securities: Fixed income securities 250,783 310,457 Equity securities 64,009 57,911 Sovereign debt 12,403 14,063 State and municipal securities 137,211 154,622 Loans 9,983 — $ 972,932 $ 1,267,449 Financial instruments sold, but not yet purchased: U.S. government securities $ 243,570 $ 534,817 U.S. government agency securities 1,000 32,755 Agency mortgage-backed securities 231,909 123,456 Corporate securities: Fixed income securities 140,100 208,725 Equity securities 32,047 36,117 Sovereign debt 13,271 11,429 State and municipal securities — 7 Loans 955 — $ 662,852 $ 947,306

Available-For-Sale And Held-T_2

Available-For-Sale And Held-To-Maturity Securities (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (in thousands) December 31, 2019 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated 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 December 31, 2018 Amortized Cost Gross Unrealized Gains (1) Gross Unrealized Losses (1) Estimated Fair Value Available-for-sale securities U.S. government agency securities $ 5,237 $ 13 $ (35 ) $ 5,215 State and municipal securities 72,487 — (4,261 ) 68,226 Mortgage-backed securities: Agency 234,292 88 (3,972 ) 230,408 Commercial 74,411 4 (4,700 ) 69,715 Non-agency 1,245 — (26 ) 1,219 Corporate fixed income securities 958,406 — (26,802 ) 931,604 Asset-backed securities 1,779,496 672 (16,108 ) 1,764,060 $ 3,125,574 $ 777 $ (55,904 ) $ 3,070,447 Held-to-maturity securities (2) Mortgage-backed securities: Agency $ 1,198,442 $ 1,307 $ (31,689 ) $ 1,168,060 Commercial 51,524 185 — 51,709 Asset-backed securities 2,968,888 4,585 (70,335 ) 2,903,138 $ 4,218,854 $ 6,077 $ (102,024 ) $ 4,122,907 (1) Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive loss. (2) Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.
Schedule Of Amortized Cost And Fair Values Of Debt Securities By Contractual Maturity	The table below summarizes the amortized cost and fair values of debt securities by contractual maturity (in thousands) December 31, 2019 December 31, 2018 Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Available-for-sale securities Within one year $ 6,861 $ 6,871 $ 5,872 $ 5,855 After one year through three years 229,184 229,760 234,101 227,951 After three years through five years 422,236 429,909 407,507 397,372 After five years through ten years 409,664 411,680 469,566 458,442 After ten years 2,186,096 2,176,517 2,008,528 1,980,827 $ 3,254,041 $ 3,254,737 $ 3,125,574 $ 3,070,447 Held-to-maturity securities After one year through three years — — 51,524 51,709 After five years through ten years 598,250 597,166 536,717 530,616 After ten years 2,257,969 2,230,717 3,630,613 3,540,582 $ 2,856,219 $ 2,827,883 $ 4,218,854 $ 4,122,907
Contractual Maturities	The maturities of our available-for-sale (fair value) and held-to-maturity (amortized cost) securities at December 31, 2019, 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 $ 1,749 $ 3,318 $ — $ — $ 5,067 State and municipal securities — — 5,875 18,422 24,297 Mortgage-backed securities: Agency — 819 24,359 812,700 837,878 Commercial — 32,457 — 77,080 109,537 Non-agency — 8,792 — 966 9,758 Corporate fixed income securities 5,122 614,283 55,906 — 675,311 Asset-backed securities — — 325,540 1,267,349 1,592,889 $ 6,871 $ 659,669 $ 411,680 $ 2,176,517 $ 3,254,737 Held-to-maturity securities Asset-backed securities $ — $ — $ 598,250 $ 2,257,969 $ 2,856,219 (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, 2019 (in thousands) Less than 12 months 12 months or more Total Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Gross Unrealized Losses Estimated Fair Value Available-for-sale securities Mortgage-backed securities: Agency $ (4,571 ) $ 458,861 $ (1,280 ) $ 112,001 $ (5,851 ) $ 570,862 Commercial (694 ) 105,084 (20 ) 2,001 (714 ) 107,085 Non-agency — — (23 ) 966 (23 ) 966 Asset-backed securities $ (3,056 ) $ 349,095 (5,149 ) 596,161 $ (8,205 ) $ 945,256 $ (8,321 ) $ 913,040 $ (6,472 ) $ 711,129 $ (14,793 ) $ 1,624,169 Held-to-maturity securities Asset-backed securities $ (2,915 ) $ 346,069 $ (31,381 ) $ 1,980,673 $ (34,296 ) $ 2,326,742

Bank Loans (Tables)

Bank Loans (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule Of Balance And Associated Percentage Of Each Major Loan Category In Bank Loan Portfolio	December 31, 2019 December 31, 2018 Balance Percent Balance Percent Commercial and industrial $ 3,438,953 35.3 % $ 3,304,234 38.5 % Residential real estate 3,309,548 33.9 2,875,014 33.5 Securities-based loans 2,098,211 21.5 1,786,966 20.8 Commercial real estate 428,549 4.4 318,961 3.7 Construction and land 398,839 4.1 138,245 1.6 Home equity lines of credit 51,205 0.5 38,098 0.4 Other 27,311 0.3 120,129 1.5 Gross bank loans 9,752,616 100.0 % 8,581,647 100.0 % Unamortized loan discount, net (6,588 ) (12,155 ) Loans in process (27,717 ) 27,984 Unamortized loan fees, net 1,310 5,972 Allowance for loan losses (95,579 ) (85,833 ) Loans held for investment, net $ 9,624,042 $ 8,517,615
Activity In The Allowance For Loan Losses By Portfolio Segment	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 88 152 (106 ) 60 194 Qualitative 843 (640 ) — — 203 $ 85,833 $ 9,977 $ (386 ) $ 155 $ 95,579 Year Ended December 31, 2018 Beginning Balance Provision Charge- offs Recoveries Ending Balance Commercial and industrial $ 54,474 $ 13,896 $ (12 ) $ 9 $ 68,367 Residential real estate 8,430 2,798 — — 11,228 Securities-based loans 2,088 (110 ) — — 1,978 Commercial real estate 1,520 258 — — 1,778 Construction and land 100 1,141 — — 1,241 Home equity lines of credit 162 145 — 3 310 Other 16 71 (2 ) 3 88 Qualitative 676 167 — — 843 $ 67,466 $ 18,366 $ (14 ) $ 15 $ 85,833
Unpaid Principal 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 $ 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 — 194 194 — 27,311 27,311 Qualitative — 203 203 — — — $ 8,182 $ 87,397 $ 95,579 $ 14,587 $ 9,738,029 $ 9,752,616 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 $ 8,678 $ 59,689 $ 68,367 $ 23,677 $ 3,280,557 $ 3,304,234 Residential real estate 24 11,204 11,228 519 2,874,495 2,875,014 Securities-based loans — 1,978 1,978 — 1,786,966 1,786,966 Commercial real estate — 1,778 1,778 — 318,961 318,961 Construction and land — 1,241 1,241 — 138,245 138,245 Home equity lines of credit — 310 310 184 37,914 38,098 Other 1 87 88 21 120,108 120,129 Qualitative — 843 843 — — — $ 8,703 $ 77,130 $ 85,833 $ 24,401 $ 8,557,246 $ 8,581,647
Loans That Were Individually Evaluated For Impairment By Portfolio Segment	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 December 31, 2018 Unpaid Contractual Principal Balance Recorded Investment with No Allowance Recorded Investment with Allowance Total Recorded Investment Related Allowance Average Recorded Investment Commercial and industrial $ 23,677 $ 242 $ 23,435 $ 23,677 $ 8,678 $ 23,807 Residential real estate 544 352 167 519 24 275 Home equity lines of credit 184 184 — 184 — 184 Other 694 11 10 21 1 70 Total $ 25,099 $ 789 $ 23,612 $ 24,401 $ 8,703 $ 24,336
Aging Of The Recorded Investment In Past Due Loans	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. December 31, 2018 30 - 89 Days Past Due 90 or More Days Past Due Total Past Due Current Balance Total Commercial and industrial $ — $ 14,656 $ 14,656 $ 3,289,578 3,304,234 Residential real estate 6,970 377 7,347 2,867,667 2,875,014 Securities-based loans — — — 1,786,966 1,786,966 Commercial real estate — — — 318,961 318,961 Construction and land — — — 138,245 138,245 Home equity lines of credit 33 — 33 38,065 38,098 Other — 134 134 119,995 120,129 Total $ 7,003 $ 15,167 $ 22,170 $ 8,559,477 $ 8,581,647 December 31, 2018 * Non-accrual Restructured Total Commercial and industrial $ 14,741 $ 8,936 $ 23,677 Residential real estate 352 167 519 Home equity lines of credit 184 — 184 Other 21 — 21 Total $ 15,298 $ 9,103 $ 24,401 * There were no loans past due 90 days and still accruing interest at December 31, 2018.
Risk Category Of Loan Portfolio	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 December 31, 2018 Pass Special Mention Substandard Doubtful Total Commercial and industrial $ 3,254,698 $ 34,795 $ 14,741 $ — $ 3,304,234 Residential real estate 2,874,495 — 519 — 2,875,014 Securities-based loans 1,786,966 — — — 1,786,966 Commercial real estate 318,961 — — — 318,961 Construction and land 138,245 — — — 138,245 Home equity lines of credit 37,914 — 184 — 38,098 Other 119,912 196 — 21 120,129 Total $ 8,531,191 $ 34,991 $ 15,444 $ 21 $ 8,581,647

Fixed Assets (Tables)

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Summary Of Fixed Assets	The following is a summary of fixed assets as of December 31, 2019 and 2018 (in thousands) December 31, 2019 2018 Office equipment $ 288,975 $ 251,542 Aircraft engine operating leases 206,315 214,065 Leasehold improvements 171,103 154,550 Building 58,804 55,342 725,197 675,499 Accumulated depreciation and amortization (343,032 ) (302,560 ) $ 382,165 $ 372,939
Summary Of Minimum Future Payments	As of December 31, 2019, minimum future payments under non-cancelable leases were (in thousands) 2020 $ 14,880 2021 12,240 2022 8,834 2023 6,517 2024 5,449 Thereafter 6,288 $ 54,208

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2018 Net Additions Write-off December 31, 2019 Goodwill Global Wealth Management $ 340,395 $ 4,586 $ — $ 344,981 Institutional Group 694,284 154,809 — 849,093 $ 1,034,679 $ 159,395 $ — $ 1,194,074 December 31, 2018 Net Additions Amortization December 31, 2019 Intangible assets Global Wealth Management $ 60,532 $ — $ (7,253 ) $ 53,279 Institutional Group 59,123 58,133 (8,762 ) 108,494 $ 119,655 $ 58,133 $ (16,015 ) $ 161,773
Intangible Assets	Intangible assets as of December 31, 2019 and 2018, were as follows (in thousands) December 31, 2019 December 31, 2018 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Customer relationships $ 198,248 $ 75,987 $ 160,745 $ 65,254 Trade name 28,123 13,649 26,831 11,755 Core deposits 8,615 2,985 8,615 816 Non-compete agreements 8,319 2,828 2,603 1,452 Investment banking backlog 4,245 1,787 1,431 1,293 Acquired technology 840 93 — — Estimated GMP Capital intangibles (1) 10,712 — — — $ 259,102 $ 97,329 $ 200,225 $ 80,570 (1)
Amortization Expense In Future Periods	As of December 31, 2019, we expect amortization expense in future periods to be as follows (in thousands) Fiscal year 2020 $ 18,796 2021 17,686 2022 16,310 2023 15,021 2024 14,034 Thereafter 77,808 $ 159,655

Senior Notes (Tables)

Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Summary of Senior Notes	The following table summarizes our senior notes as of December 31, 2019 and 2018 (in thousands) December 31, 2019 2018 4.250% senior notes, due 2024 (1) $ 500,000 $ 500,000 3.50% senior notes, due 2020 (2) 300,000 300,000 5.20% senior notes, due 2047 (3) 225,000 225,000 1,025,000 1,025,000 Debt issuance costs, net (7,990 ) (9,027 ) Senior notes, net $ 1,017,010 $ 1,015,973 ( 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 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 (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 . Interest on the senior notes is payable quarterly in arrears on January 15, April 15, July 15, and October 15. On or after October 15, 2022, we may redeem some or all of the senior notes at any time at a redemption price equal to 100 % of the principal amount of the notes being redeemed plus accrued interest thereon to the redemption date. On October 27, 2017, we completed the sale of an additional $ 25.0 million aggregate principal amount of Notes pursuant to the over-allotment option.
Schedule of Corporate Date Maturity	Our senior notes mature as follows, based upon contractual terms (in thousands) 2020 $ 300,000 2021 — 2022 — 2023 — 2024 500,000 Thereafter 225,000 $ 1,025,000

Bank Deposits (Tables)

Bank Deposits (Tables)	12 Months Ended
	Dec. 31, 2019
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Schedule Of Deposits	Deposits consist of money market and savings accounts, certificates of deposit, and demand deposits. Deposits at December 31, 2019 and 2018, were as follows (in thousands) December 31, 2019 2018 Money market and savings accounts $ 13,530,670 $ 13,609,612 Demand deposits (interest-bearing) 1,113,296 392,765 Certificates of deposit 522,958 1,763,336 Demand deposits (non-interest-bearing) 165,657 97,900 $ 15,332,581 $ 15,863,613
Schedule of Maturities of Certificates of Deposit	Scheduled maturities of certificates of deposit at December 31, 2019 and 2018, were as follows (in thousands) December 31, 2019 2018 Certificates of deposit, less than $100,000: Within one year $ 5,305 $ 4,858 One to three years 360 623 Three to five years 13 140 $ 5,678 $ 5,621 Certificates of deposit, $100,000 and greater: Within one year $ 441,341 $ 1,535,784 One to three years 68,855 195,159 Three to five years 7,084 26,772 517,280 1,757,715 $ 522,958 $ 1,763,336

Derivative Instruments And He_2

Derivative Instruments And Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2019
General Discussion Of Derivative Instruments And Hedging Activities [Abstract]
Schedule Of Notional Values And Fair Values Of Derivative Instruments	The following table provides the notional values and fair values of our derivative instruments as of December 31, 2019 and 2018 (in thousands) December 31, 2019 Notional Value Balance Sheet Location Fair Value Derivative Assets Cash flow interest rate contracts $ 250,000 Other assets $ 1,086 December 31, 2018 Notional Value Balance Sheet Location Fair Value Derivative Assets Cash flow interest rate contracts $ 540,000 Other assets $ 7,683
Schedule Of Derivative Instruments In Consolidated Statements Of Operations	The following table shows the effect of our company’s derivative instruments in the consolidated statements of operations for the years ended December 31, 2019, 2018, and 2017 (in thousands) Gain/(Loss) Recognized in OCI Gain/(loss) Reclassified From OCI Into Income Year Ended December 31, Year Ended December 31, 2019 2018 2017 2019 2018 2017 Cash flow interest rate contracts $ 2,641 $ (3,876 ) $ 1,085 $ 3,307 $ 4,947 $ (635 )

Debentures To Stifel Financia_2

Debentures To Stifel Financial Capital Trusts (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 and 2018 (in thousands) December 31, 2019 2018 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, 2019
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, 2019 and 2018 (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, 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 As of December 31, 2018: Securities borrowing (1) $ 109,795 $ — $ 109,795 $ (57,328 ) $ (45,005 ) $ 7,462 Reverse repurchase agreements (2) 699,900 — 699,900 (365,822 ) (329,740 ) 4,338 Cash flow interest rate contracts 7,683 — 7,683 — — 7,683 $ 817,378 $ — $ 817,378 $ (423,150 ) $ (374,745 ) $ 19,483 (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 $385.3 million and $695.6 million at December 31, 2019 and 2018, 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, 2019 and 2018 (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, 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 ) As of December 31, 2018: Securities lending (3) $ (392,163 ) $ — $ (392,163 ) $ 57,328 $ 325,110 $ (9,725 ) Repurchase agreements (4) (535,394 ) — (535,394 ) 365,822 169,572 — $ (927,557 ) $ — $ (927,557 ) $ 423,150 $ 494,682 $ (9,725 ) (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 $407.3 million and $558.6 million at December 31, 2019 and 2018, respectively.

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	12 Months Ended
	Dec. 31, 2019
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 $ 1,972,832 15.2 % $ 584,162 4.5 % $ 843,790 6.5 % Tier 1 capital 2,287,085 17.6 % 778,883 6.0 % 1,038,510 8.0 % Total capital 2,441,808 18.8 % 1,038,510 8.0 % 1,298,138 10.0 % Tier 1 leverage 2,287,085 10.0 % 917,167 4.0 % 1,146,459 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 $ 991,238 12.1 % $ 370,127 4.5 % $ 534,628 6.5 % Tier 1 capital 995,491 12.1 % 493,503 6.0 % 658,004 8.0 % Total capital 1,090,271 13.3 % 658,004 8.0 % 822,505 10.0 % Tier 1 leverage 995,491 7.1 % 559,104 4.0 % 698,880 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 $ 154,299 16.9 % $ 40,966 4.5 % $ 59,173 6.5 % Tier 1 capital 154,299 16.9 % 54,622 6.0 % 72,829 8.0 % Total capital 164,020 18.0 % 72,829 8.0 % 91,036 10.0 % Tier 1 leverage 154,299 7.1 % 86,876 4.0 % 108,595 5.0 %

Operating Leases (Tables)

Operating Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Lessee Disclosure [Abstract]
Schedule of Net Lease Cost	The table below summarizes our net lease cost for the year ended December 31, 2019 (in thousands) Operating lease cost $ 90,354 Short-term lease cost 1,479 Variable lease cost 79 Sublease income (4,761 ) Net lease cost $ 87,151 The table below summarizes other information related to our operating leases as of and for the year ended December 31, 2019 (in thousands) Operating lease cash flows $ 89,976 Weighted-average remaining lease term 11.4 years Weighted-average discount rate 4.58 %
Schedule of Information About Operating Lease Liabilities	The table below presents information about operating lease liabilities as of December 31, 2019, (in thousands, except percentages) 2020 $ 94,093 2021 88,436 2022 86,594 2023 85,491 2024 83,517 Thereafter 479,986 Total undiscounted lease payments 918,117 Imputed interest (211,078 ) Total operating lease liabilities $ 707,039

Revenues From Contracts With _2

Revenues From Contracts With Customers (Tables)	12 Months Ended
	Dec. 31, 2019
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 separated between revenues from contracts with customers and other sources of revenues for the years ended December 31, 2019 and 2018 (in thousands) Year Ended December 31, 2019 2018 Revenues from contracts with customers: Commissions $ 667,494 $ 657,732 Investment banking 817,421 707,670 Asset management and service fees 848,035 806,175 Other 19,287 15,568 Total revenue from contracts with customers 2,352,237 2,187,145 Other sources of revenue: Interest 724,882 646,449 Principal transactions 404,751 351,378 Other 33,091 9,985 Total revenues $ 3,514,961 $ 3,194,957
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, 2019 and 2018 (in thousands) Year Ended December 31, 2019 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 477,401 $ 190,093 $ — $ 667,494 Capital raising (1) 37,915 331,527 — 369,442 Advisory fees (1) — 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 Year Ended December 31, 2018 Global Wealth Management Institutional Group Other Total Major business activity: Commissions $ 472,135 $ 185,597 $ — $ 657,732 Capital raising (1) 31,293 304,895 — 336,188 Advisory fees (1) 81 371,401 — 371,482 Investment banking 31,374 676,296 — 707,670 Asset management 806,132 43 — 806,175 Other 11,625 — 3,943 15,568 Total 1,321,266 861,936 3,943 2,187,145 Primary Geographic Region: United States 1,321,266 725,251 3,943 2,050,460 United Kingdom — 130,979 — 130,979 Other — 5,706 — 5,706 $ 1,321,266 $ 861,936 $ 3,943 $ 2,187,145 (1 )

Interest Income and Interest _2

Interest Income and Interest Expense (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 2017 Interest income: Loans held for investment, net $ 379,848 $ 300,541 $ 206,084 Investment securities 231,021 252,200 187,731 Margin balances 52,008 49,515 37,218 Financial instruments owned 23,528 21,407 17,563 Other 38,477 22,786 5,785 $ 724,882 $ 646,449 $ 454,381 Interest expense: Bank deposits $ 95,813 $ 82,256 $ 12,661 Senior notes 44,507 44,610 35,338 Federal Home Loan Bank advances 7,872 15,173 8,305 Other 29,739 28,037 13,726 $ 177,931 $ 170,076 $ 70,030

Employee Incentive, Deferred _2

Employee Incentive, Deferred Compensation, And Retirement Plans (Tables)	12 Months Ended
	Dec. 31, 2019
Share Based Compensation Allocation And Classification In Financial Statements [Abstract]
Unvested Stock Award Activity	Weighted-average grant date fair value Unvested December 31, 2018 14,117 $ 46.75 Granted 2,871 49.60 Vested (2,656 ) 45.34 Cancelled (864 ) 43.87 Unvested December 31, 2019 13,468 $ 47.83

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 2017 Current taxes: Federal $ 123,802 $ 89,971 $ (29,396 ) State 30,464 36,070 (334 ) Foreign 1,684 99 (1,734 ) 155,950 126,140 (31,464 ) Deferred taxes: Federal (7,027 ) 11,932 114,842 State 4,266 2,267 1,728 Foreign (4,037 ) 55 1,559 (6,798 ) 14,254 118,129 Provision for income taxes $ 149,152 $ 140,394 $ 86,665
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, 2019 2018 2017 Statutory rate $ 125,485 $ 112,215 $ 94,338 State income taxes, net of federal income tax 28,333 30,762 6,721 Change in uncertain tax position 2,661 (617 ) 1,544 Foreign tax rate difference (629 ) (318 ) (412 ) Excess tax benefit from stock-based compensation (9,670 ) (3,700 ) (57,431 ) Revaluation of deferred tax assets — (3,006 ) 42,443 Other, net 2,972 5,058 (538 ) $ 149,152 $ 140,394 $ 86,665
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, 2019 2018 Deferred tax assets: Lease liabilities $ 181,607 $ — Deferred compensation 80,389 74,916 Receivable reserves 33,199 30,252 Net operating loss carryforwards 28,781 29,699 Accrued expenses 26,166 19,832 Unrealized loss on investments — 10,635 Other 3,210 3,066 Total deferred tax assets 353,352 168,400 Valuation allowance (5,042 ) (3,944 ) 348,310 164,456 Deferred tax liabilities: Lease ROU asset (180,598 ) — Goodwill and other intangibles (46,625 ) (42,045 ) Depreciation (7,231 ) (6,629 ) Unrealized gain on investments (5,619 ) — Prepaid expenses (3,857 ) (3,774 ) (243,930 ) (52,448 ) Net deferred tax asset $ 104,380 $ 112,008
Unrecognized Tax Benefits	The following table summarizes the activity related to our company’s unrecognized tax benefits from January 1, 2017 to December 31, 2019 (in thousands) Year Ended December 31, 2019 2018 2017 Beginning balance $ 312 $ 3,180 $ 1,800 Increase related to prior year tax positions 2,173 4 3,036 Decrease related to prior year tax positions (54 ) (33 ) (287 ) Increase related to current year tax positions 956 191 — Decrease related to settlements with taxing authorities — (3,030 ) (171 ) Decrease related to lapsing of statute of limitations — — (1,198 ) Ending balance $ 3,387 $ 312 $ 3,180

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule Of Operating Information, Segment	Information concerning operations in these segments of business for the years ended December 31, 2019, 2018, and 2017, is as follows (in thousands) Year Ended December 31, 2019 2018 2017 Net revenues: (1) Global Wealth Management $ 2,130,559 $ 1,990,319 $ 1,822,218 Institutional Group 1,214,017 1,055,495 1,110,768 Other (7,546 ) (20,933 ) (6,554 ) $ 3,337,030 $ 3,024,881 $ 2,926,432 Income/(loss) before income taxes: Global Wealth Management $ 785,960 $ 737,003 $ 626,906 Institutional Group 175,670 157,051 217,981 Other (362,492 ) (359,692 ) (575,351 ) $ 599,138 $ 534,362 $ 269,536 (1) No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2019, 2018, and 2017.
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, 2019 and 2018 (in thousands) December 31, 2019 2018 Global Wealth Management $ 20,675,580 $ 21,040,224 Institutional Group 3,668,723 3,238,617 Other 265,922 240,757 $ 24,610,225 $ 24,519,598
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, 2019, 2018, and 2017, were as follows (in thousands): Year Ended December 31, 2019 2018 2017 United States $ 3,154,285 $ 2,855,955 $ 2,783,175 United Kingdom 163,552 156,557 129,288 Other 19,193 12,369 13,969 $ 3,337,030 $ 3,024,881 $ 2,926,432

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019, 2018, and 2017 (in thousands, except per share data) Year Ended December 31, 2019 2018 2017 Net income applicable to Stifel Financial Corp. $ 448,396 $ 393,968 $ 182,871 Preferred dividends 17,319 9,375 9,375 Net income available to common shareholders $ 431,077 $ 384,593 $ 173,496 Shares for basic and diluted calculation: Average shares used in basic computation 71,998 71,786 68,562 Dilutive effect of stock options and units (1) 6,587 9,535 12,473 Average shares used in diluted computation 78,585 81,321 81,035 Earnings per common share: Basic $ 5.99 $ 5.36 $ 2.53 Diluted $ 5.49 $ 4.73 $ 2.14 (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 (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	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 income 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 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 $ 1.35 $ 1.43 $ 1.47 $ 1.79 Diluted $ 1.22 $ 1.31 $ 1.34 $ 1.62 Cash dividends declared per common share $ 0.15 $ 0.15 $ 0.15 $ 0.15 Weighted-average number of common shares outstanding: Basic 71,700 72,519 71,197 70,470 Diluted 79,210 79,079 78,144 77,813 Year Ended December 31, 2018 ($ in thousands, except per share amounts) 1 st 2 nd 3 rd 4 th Operating revenues $ 639,077 $ 625,590 $ 617,050 $ 666,791 Interest income 137,734 154,421 169,760 184,534 Total revenues 776,811 780,011 786,810 851,325 Interest expense 26,453 37,279 48,468 57,876 Net revenues 750,358 742,732 738,342 793,449 Total non-interest expenses 630,804 624,385 597,812 637,518 Income before income tax expense 119,554 118,347 140,530 155,931 Provision for income taxes 30,793 31,060 36,672 41,869 Net income 88,761 87,287 103,858 114,062 Preferred dividends 2,344 2,344 2,343 2,344 Net income available to common shareholders $ 86,417 $ 84,943 $ 101,515 $ 111,718 Earnings per common share: Basic $ 1.20 $ 1.18 $ 1.41 $ 1.56 Diluted $ 1.06 $ 1.04 $ 1.25 $ 1.38 Cash dividends declared per common share $ 0.12 $ 0.12 $ 0.12 $ 0.12 Weighted-average number of common shares outstanding: Basic 71,999 71,692 71,919 71,666 Diluted 81,789 81,299 81,484 80,706

Nature of Operations And Basi_3

Nature of Operations And Basis of Presentation (Details)	Dec. 31, 2019
North Shore Aviation Holdings LLC [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	27.50%

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies (Details) - USD ($)	Oct. 31, 2019	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
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
Incremental payments due upon termination of contract			0
Right-of-use assets			725,800,000
Lease liabilities			707,039,000
Other operating expenses			325,444,000	$ 315,152,000	$ 297,634,000
ASU 2017-08 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative adjustments for accounting changes		$ 4,400,000
ASU 2016-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative adjustments for accounting changes		6,700,000
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 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
ASU 2016-18 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Increase in net cash provided by operating activities					$ 17,600,000
ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative adjustments for accounting changes			4,200,000
Capital raising and advisory fee revenues			33,800,000
Other operating expenses			33,800,000
Minimum [Member] | ASU 2016-13 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reserve for credit losses			107,500,000
Maximum [Member] | ASU 2016-13 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reserve for credit losses			$ 120,500,000
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) $ in Thousands, shares in Millions

Dec. 06, 2019USD ($)

Nov. 01, 2019USD ($)

Sep. 27, 2019USD ($)

Sep. 03, 2019USD ($)

Jul. 01, 2019USD ($)

Jan. 02, 2019USD ($)

Oct. 01, 2018USD ($)

Aug. 31, 2018USD ($)shares

Mar. 19, 2018USD ($)ClientAdvisorState

Dec. 31, 2019USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Business Acquisition [Line Items]

Goodwill

$ 1,194,074

$ 1,034,679

$ 1,034,679

Institutional Group [Member]

Business Acquisition [Line Items]

Goodwill

849,093

694,284

Global Wealth Management [Member]

Business Acquisition [Line Items]

Goodwill

344,981

$ 340,395

GMP Capital Inc. [Member]

Business Acquisition [Line Items]

Date of acquisition

Dec. 6, 2019

GMP Capital Inc. [Member] | Institutional Group [Member]

Business Acquisition [Line Items]

Goodwill

$ 30,500

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

$ 14,600

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

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

$ 21,200

Mooreland Partners [Member]

Business Acquisition [Line Items]

Date of acquisition

Jul. 1, 2019

Period of contingent consideration

3 years

Liability for earn-out payments

18,400

Mooreland Partners [Member] | Non-Compete Agreements and Backlog [Member]

Business Acquisition [Line Items]

Identifiable intangible assets

$ 5,000

Mooreland Partners [Member] | Institutional Group [Member]

Business Acquisition [Line Items]

Goodwill

$ 51,000

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

Rand & Associates [Member]

Business Acquisition [Line Items]

Period of contingent consideration

5 years

Liability for earn-out payments

$ 4,400

$ 4,100

Rand & Associates [Member] | Customer Relationships [Member]

Business Acquisition [Line Items]

Identifiable intangible assets

$ 4,700

Rand & Associates [Member] | Global Wealth Management [Member]

Business Acquisition [Line Items]

Goodwill

$ 9,300

Business Bancshares, Inc. [Member]

Business Acquisition [Line Items]

Date of acquisition

Aug. 31, 2018

Business acquisition, equity interest issued or issuable, description

Under the terms of the merger agreement, each outstanding share of BBI common stock (except for shares of BBI common stock held by BBI as treasury stock) were converted into the right to receive 0.705 shares of our company’s common stock, with fractional shares settled with cash.

Business combination equity interest exchange ratio

0.705

Shares issued for acquisition | shares

2

Acquisition of loans

$ 507,800

Acquisition of other assets

85,700

Acquisition of deposits

501,100

Acquisition of other liabilities

21,900

Business Bancshares, Inc. [Member] | Core Deposits [Member]

Business Acquisition [Line Items]

Identifiable intangible assets

8,600

Business Bancshares, Inc. [Member] | Global Wealth Management [Member]

Business Acquisition [Line Items]

Goodwill

$ 41,600

Ziegler [Member]

Business Acquisition [Line Items]

Date of acquisition

Mar. 19, 2018

Goodwill

$ 19,000

Number of private client advisors | ClientAdvisor

55

Number of states in which private client advisors operates | State

5

Assets

$ 5,000,000

Ziegler [Member] | Customer Relationships and Non-Compete Agreements [Member]

Business Acquisition [Line Items]

Identifiable intangible assets

$ 9,500

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, 2019	Dec. 31, 2018
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Receivables from clearing organizations	$ 471,122	$ 320,277
Deposits paid for securities borrowed	135,373	109,795
Securities failed to deliver	21,295	85,502
Receivables from brokers, dealers and clearing organizations, Total	$ 627,790	$ 515,574

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, 2019	Dec. 31, 2018
Due To And From Broker Dealers And Clearing Organizations [Abstract]
Deposits received from securities loaned	$ 608,333	$ 392,163
Payable to clearing organizations	78,702	12,161
Securities failed to receive	25,256	27,975
Payables to broker, dealers and clearing organizations, Total	$ 712,291	$ 432,299

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, 2019	Dec. 31, 2018
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	$ 38,955	$ 36,278
Unfunded commitments	2,156	2,504
Money Market Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	25,734	19,719
Mutual Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	7,875	9,122
Private Equity Funds [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	2,288	3,461
Unfunded commitments	1,203	1,480
Partnership Interests [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Fair value of investments	3,058	3,976
Unfunded commitments	$ 953	$ 1,024

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, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	$ 972,932	$ 1,267,449
Available-for-sale securities	3,254,737	3,070,447
Investments	79,972	67,982
Cash equivalents measured at NAV	25,734	19,719
Derivative contracts, Assets	1,086	7,683
Total Assets	4,334,461	4,433,280
Financial instruments sold, but not yet purchased, at fair value	662,852	947,306
Sovereign Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	12,403	14,063
Financial instruments sold, but not yet purchased, at fair value	13,271	11,429
U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	66,881	72,532
Available-for-sale securities	5,067	5,215
Financial instruments sold, but not yet purchased, at fair value	1,000	32,755
Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	28,385	25,905
Available-for-sale securities	1,592,889	1,764,060
Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	250,783	310,457
Available-for-sale securities	675,311	931,604
Financial instruments sold, but not yet purchased, at fair value	140,100	208,725
Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	64,009	57,911
Investments	35,083	33,046
Financial instruments sold, but not yet purchased, at fair value	32,047	36,117
State And Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	137,211	154,622
Available-for-sale securities	24,297	68,226
Financial instruments sold, but not yet purchased, at fair value		7
Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	9,983
Financial instruments sold, but not yet purchased, at fair value	955
Auction Rate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	14,243	16,632
Auction Rate Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	654	704
Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	16,771	1,041
Investments in Funds and Partnerships Measured at NAV [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	13,221	16,559
U.S. Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	9,266	42,121
Financial instruments sold, but not yet purchased, at fair value	243,570	534,817
Mortgage Backed Securities [Member] | Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	388,856	564,111
Available-for-sale securities	837,878	230,408
Financial instruments sold, but not yet purchased, at fair value	231,909	123,456
Mortgage Backed Securities [Member] | Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	5,155	25,727
Available-for-sale securities	9,758	1,219
Mortgage Backed Securities [Member] | Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	109,537	69,715
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	71,717	100,346
Available-for-sale securities		417
Investments	43,928	31,670
Total Assets	115,645	132,433
Financial instruments sold, but not yet purchased, at fair value	276,250	571,504
Level 1 [Member] | U.S. Government Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities		417
Level 1 [Member] | Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	872	1,100
Financial instruments sold, but not yet purchased, at fair value	633	1,289
Level 1 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	61,579	57,125
Investments	34,023	31,670
Financial instruments sold, but not yet purchased, at fair value	32,047	35,398
Level 1 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	9,905
Level 1 [Member] | U.S. Government Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	9,266	42,121
Financial instruments sold, but not yet purchased, at fair value	243,570	534,817
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	891,889	1,166,927
Available-for-sale securities	3,254,737	3,070,030
Investments	6,483	1,560
Derivative contracts, Assets	1,086	7,683
Total Assets	4,154,195	4,246,200
Financial instruments sold, but not yet purchased, at fair value	385,647	375,802
Level 2 [Member] | Sovereign Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	12,403	14,063
Financial instruments sold, but not yet purchased, at fair value	13,271	11,429
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	66,881	72,532
Available-for-sale securities	5,067	4,798
Financial instruments sold, but not yet purchased, at fair value	1,000	32,755
Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	28,210	25,730
Available-for-sale securities	1,592,889	1,764,060
Level 2 [Member] | Corporate Fixed Income Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	249,911	309,357
Available-for-sale securities	675,311	931,604
Financial instruments sold, but not yet purchased, at fair value	139,467	207,436
Level 2 [Member] | Corporate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	2,430	786
Investments		1,376
Financial instruments sold, but not yet purchased, at fair value		719
Level 2 [Member] | State And Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	137,211	154,622
Available-for-sale securities	24,297	68,226
Financial instruments sold, but not yet purchased, at fair value		7
Level 2 [Member] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	832
Level 2 [Member] | Auction Rate Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	470
Level 2 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	6,013	184
Level 2 [Member] | Mortgage Backed Securities [Member] | Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	388,856	564,111
Available-for-sale securities	837,878	230,408
Financial instruments sold, but not yet purchased, at fair value	231,909	123,456
Level 2 [Member] | Mortgage Backed Securities [Member] | Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	5,155	25,726
Available-for-sale securities	9,758	1,219
Level 2 [Member] | Mortgage Backed Securities [Member] | Commercial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	109,537	69,715
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	9,326	176
Investments	16,340	18,193
Total Assets	25,666	18,369
Financial instruments sold, but not yet purchased, at fair value	955
Level 3 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	175	175
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] | Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	9,151
Financial instruments sold, but not yet purchased, at fair value	955
Level 3 [Member] | Auction Rate Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	14,243	16,632
Level 3 [Member] | Auction Rate Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	184	704
Level 3 [Member] | Other Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 853	857
Level 3 [Member] | Mortgage Backed Securities [Member] | Non-Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned		$ 1

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, 2019	Dec. 31, 2018
Non-Agency [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 1	$ 1
Realized gains/(losses)	(1)
Net change	(1)
Ending Balance		1
Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	175	357
Unrealized gains/(losses), Included in changes in net assets	2	(164)
Redemptions	(2)	(18)
Net change		(182)
Ending Balance	175	175
Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Realized gains/(losses)	452
Purchases	24,316
Sales	(16,081)
Redemptions	(1)
Transfers, Into Level 3	465
Net change	9,151
Ending Balance	9,151
Corporate Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Transfers, Into Level 3	1,060
Net change	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	16,632	34,789
Unrealized gains/(losses), Included in changes in net assets	261	1,193
Redemptions	(2,650)	(19,350)
Net change	(2,389)	(18,157)
Ending Balance	14,243	16,632
Auction Rate Municipal Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	704	846
Unrealized gains/(losses), Included in changes in net assets		8
Redemptions	(50)	(150)
Transfers, Out of Level 3	(470)
Net change	(520)	(142)
Ending Balance	184	704
Other Investment [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	857	857
Redemptions	(4)
Net change	(4)
Ending Balance	$ 853	857
Fixed Income Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		242
Redemptions		(242)
Net change		(242)
Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		253
Unrealized gains/(losses), Included in changes in net assets		(130)
Realized gains/(losses)		21
Sales		(144)
Net change		$ (253)

Fair Value Of Financial Instr_4

Fair Value Of Financial Instruments (Schedule Of Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities purchased under agreements to resell	[1]	$ 385,008	$ 699,900
Financial instruments owned		972,932	1,267,449
Available-for-sale securities		3,254,737	3,070,447
Held-to-maturity securities		2,827,883	4,122,907	[2]
Derivative contracts		1,086	7,683
Securities sold under agreements to repurchase	[3]	391,634	535,394
Bank deposits		15,332,581	15,863,613
Financial instruments sold, but not yet purchased, at fair value		662,852	947,306
Senior notes		1,017,010	1,015,973
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		1,142,596	1,936,560
Cash segregated for regulatory purposes		131,374	132,814
Securities purchased under agreements to resell		385,008	699,900
Financial instruments owned		972,932	1,267,449
Available-for-sale securities		3,254,737	3,070,447
Held-to-maturity securities		2,856,219	4,218,854
Bank loans		9,624,042	8,517,615
Loans held for sale		389,693	205,557
Investments		79,972	67,982
Derivative contracts		1,086	7,683
Securities sold under agreements to repurchase		391,634	535,394
Bank deposits		15,332,581	15,863,613
Financial instruments sold, but not yet purchased, at fair value		662,852	947,306
Federal Home Loan Bank advances		250,000	540,000
Borrowings		150	180,655
Senior notes		1,017,010	1,015,973
Debentures to Stifel Financial Capital Trusts		60,000	67,500
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents		1,142,596	1,936,560
Cash segregated for regulatory purposes		131,374	132,814
Securities purchased under agreements to resell		385,008	699,900
Financial instruments owned		972,932	1,267,449
Available-for-sale securities		3,254,737	3,070,447
Held-to-maturity securities		2,827,883	4,122,907
Bank loans		9,801,986	8,565,347
Loans held for sale		389,693	205,557
Investments		79,972	67,982
Derivative contracts		1,086	7,683
Securities sold under agreements to repurchase		391,634	535,394
Bank deposits		14,467,894	14,661,996
Financial instruments sold, but not yet purchased, at fair value		662,852	947,306
Federal Home Loan Bank advances		250,000	540,000
Borrowings		150	180,655
Senior notes		1,069,425	989,790
Debentures to Stifel Financial Capital Trusts		$ 45,847	$ 49,747
[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 $385.3 million and $695.6 million at December 31, 2019 and 2018, respectively.
[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.
[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 $407.3 million and $558.6 million at December 31, 2019 and 2018, 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, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities purchased under agreements to resell	[1]	$ 385,008	$ 699,900
Held-to-maturity securities		2,827,883	4,122,907	[2]
Securities sold under agreements to repurchase	[3]	391,634	535,394
Bank deposits		15,332,581	15,863,613
Senior notes		1,017,010	1,015,973
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash		1,116,862	1,916,841
Cash segregated for regulatory purposes		131,374	132,814
Securities purchased under agreements to resell		385,008	699,900
Held-to-maturity securities		2,827,883	4,122,907
Bank loans		9,801,986	8,565,347
Loans held for sale		389,693	205,557
Securities sold under agreements to repurchase		391,634	535,394
Bank deposits		14,467,894	14,661,996
Federal Home Loan Bank advances		250,000	540,000
Borrowings		150	180,655
Senior notes		1,069,425	989,790
Debentures to Stifel Financial Capital Trusts		45,847	49,747
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash		1,116,862	1,916,841
Cash segregated for regulatory purposes		131,374	132,814
Securities purchased under agreements to resell		342,132	645,632
Securities sold under agreements to repurchase		22,205	87,273
Federal Home Loan Bank advances		250,000	540,000
Borrowings		150	180,655
Senior notes		1,069,425	989,790
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		42,876	54,268
Held-to-maturity securities		2,666,773	3,960,099
Bank loans		9,801,986	8,565,347
Loans held for sale		389,693	205,557
Securities sold under agreements to repurchase		369,429	448,121
Bank deposits		14,467,894	14,661,996
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		161,110	162,808
Debentures to Stifel Financial Capital Trusts		$ 45,847	$ 49,747
[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 $385.3 million and $695.6 million at December 31, 2019 and 2018, respectively.
[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.
[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 $407.3 million and $558.6 million at December 31, 2019 and 2018, 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, 2019	Dec. 31, 2018
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	$ 972,932	$ 1,267,449
U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	66,881	72,532
Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	250,783	310,457
Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	64,009	57,911
State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	137,211	154,622
Loans [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	9,983
U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	9,266	42,121
Sovereign Debt [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	12,403	14,063
Securities Sold, But Not yet Purchased [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments owned, at fair value	662,852	947,306
Securities Sold, But Not yet Purchased [Member] | U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned	1,000	32,755
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	140,100	208,725
Securities Sold, But Not yet Purchased [Member] | Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Equity securities	32,047	36,117
Securities Sold, But Not yet Purchased [Member] | State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
State and municipal securities		7
Securities Sold, But Not yet Purchased [Member] | Loans [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities	955
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	243,570	534,817
Securities Sold, But Not yet Purchased [Member] | Mortgage Backed Securities [Member] | Agency [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned	231,909	123,456
Securities Sold, But Not yet Purchased [Member] | Sovereign Debt [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Sovereign debt	13,271	11,429
Securities Owned [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Asset-backed securities	28,385	25,905
Financial instruments owned, at fair value	972,932	1,267,449
Securities Owned [Member] | U.S. Government Agency Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned	66,881	72,532
Securities Owned [Member] | Corporate Fixed Income Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities	250,783	310,457
Securities Owned [Member] | Corporate Equity Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Equity securities	64,009	57,911
Securities Owned [Member] | State and Municipal Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
State and municipal securities	137,211	154,622
Securities Owned [Member] | Loans [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Fixed income securities	9,983
Securities Owned [Member] | U.S. Government Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned	9,266	42,121
Securities Owned [Member] | Mortgage Backed Securities [Member] | Agency [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned	388,856	564,111
Securities Owned [Member] | Mortgage Backed Securities [Member] | Non-Agency [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Trading securities owned	5,155	25,727
Securities Owned [Member] | Sovereign Debt [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Sovereign debt	$ 12,403	$ 14,063

Financial Instruments Owned A_4

Financial Instruments Owned And Financial Instruments Sold, But Not Yet Purchased (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments pledged as collateral	$ 801.5	$ 1,900
Securities Owned [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Financial instruments pledged as collateral	$ 511.2	$ 669

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, 2019	Dec. 31, 2018
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		$ 3,254,041	$ 3,125,574
Available for sale securities, unrealized gains	[1]	15,489	777
Available-for-sale Securities, Gross unrealized losses	[1]	(14,793)	(55,904)
Available-for-sale securities		3,254,737	3,070,447
Held-to-maturity Securities, Amortized cost		2,856,219	4,218,854	[2]
Held-to-maturity Securities, Gross unrealized gains	[2]		6,077
Held-to-maturity Securities, Gross unrealized losses	[2]		(102,024)
Held-to-maturity securities, Estimated fair value		2,827,883	4,122,907	[2]
U.S. Government Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		5,028	5,237
Available for sale securities, unrealized gains	[1]	39	13
Available-for-sale Securities, Gross unrealized losses	[1]		(35)
Available-for-sale securities		5,067	5,215
State And Municipal Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		24,198	72,487
Available for sale securities, unrealized gains	[1]	99
Available-for-sale Securities, Gross unrealized losses	[1]		(4,261)
Available-for-sale securities		24,297	68,226
Mortgage Backed Securities [Member] | Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		840,659	234,292
Available for sale securities, unrealized gains	[1]	3,070	88
Available-for-sale Securities, Gross unrealized losses	[1]	(5,851)	(3,972)
Available-for-sale securities		837,878	230,408
Held-to-maturity Securities, Amortized cost	[2]		1,198,442
Held-to-maturity Securities, Gross unrealized gains	[2]		1,307
Held-to-maturity Securities, Gross unrealized losses	[2]		(31,689)
Held-to-maturity securities, Estimated fair value	[2]		1,168,060
Mortgage Backed Securities [Member] | Commercial [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		109,982	74,411
Available for sale securities, unrealized gains	[1]	269	4
Available-for-sale Securities, Gross unrealized losses	[1]	(714)	(4,700)
Available-for-sale securities		109,537	69,715
Held-to-maturity Securities, Amortized cost	[2]		51,524
Held-to-maturity Securities, Gross unrealized gains	[2]		185
Held-to-maturity securities, Estimated fair value	[2]		51,709
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		9,731	1,245
Available for sale securities, unrealized gains	[1]	50
Available-for-sale Securities, Gross unrealized losses	[1]	(23)	(26)
Available-for-sale securities		9,758	1,219
Corporate Fixed Income Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		664,028	958,406
Available for sale securities, unrealized gains	[1]	11,283
Available-for-sale Securities, Gross unrealized losses	[1]		(26,802)
Available-for-sale securities		675,311	931,604
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Amortized cost		1,600,415	1,779,496
Available for sale securities, unrealized gains	[1]	679	672
Available-for-sale Securities, Gross unrealized losses	[1]	(8,205)	(16,108)
Available-for-sale securities		1,592,889	1,764,060
Held-to-maturity Securities, Amortized cost	[2]	2,856,219	2,968,888
Held-to-maturity Securities, Gross unrealized gains	[2]	5,960	4,585
Held-to-maturity Securities, Gross unrealized losses	[2]	(34,296)	(70,335)
Held-to-maturity securities, Estimated fair value	[2]	$ 2,827,883	$ 2,903,138
[1]	Unrealized gains/(losses) related to available-for-sale securities are reported in accumulated other comprehensive loss.
[2]	Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.

Available-For-Sale And Held-T_4

Available-For-Sale And Held-To-Maturity Securities (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)security	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Aug. 01, 2019USD ($)
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Proceeds from sale of available-for-sale securities	$ 641,800	$ 372,400	$ 87,300
Net realized gains (loss) resulting from sale of available-for-sale securities	(300)	(3,900)	400
Transfers from held to maturity to available for sale securities reclassification fair value				$ 1,100,000
Other comprehensive income (loss), transfers from held-to-maturity to available-for-sale securities, net of tax	17,900
Unrealized gains (losses) recorded in accumulated other comprehensive loss	42,400	(36,300)	4,700
Financial instruments pledged as collateral	$ 801,500	1,900,000
Number of available for sale securities whose amortized costs exceeded their fair values | security	125
Available-for-sale Securities, Continuous	$ 14,793
Available-for-sale Securities, Continuous Unrealized	6,472
Available-for-sale Securities, Continuous	$ 1,624,169
Percentage of available-for-sale portfolio	49.90%
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | security	125
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss	$ 34,300
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	31,400
Credit-related OTTI	0	0	$ 0
Gross unrealized losses related to investment portfolio	49,100
Pledged [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Trading securities pledged	$ 816,100	$ 1,600,000

Available-For-Sale And Held-T_5

Available-For-Sale And Held-To-Maturity Securities (Schedule Of Amortized Cost And Fair Values Of Debt Securities By Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2019		Dec. 31, 2018
Investments Debt And Equity Securities [Abstract]
Available-for-sale Securities, debt maturities, within one year, Amortized Cost	$ 6,861		$ 5,872
Available-for-sale Securities, debt maturities, after one year through three years, Amortized Cost	229,184		234,101
Available-for-sale Securities, debt maturities, after three year through five years, Amortized Cost	422,236		407,507
Available-for-sale Securities, debt maturities, after five through ten years, Amortized Cost	409,664		469,566
Available-for-sale Securities, debt maturities, after ten years, Amortized Cost	2,186,096		2,008,528
Available-for-sale Securities, debt maturities, Amortized Cost	3,254,041		3,125,574
Available-for-sale Securities, debt maturities, within one year, Fair Value	6,871	[1]	5,855
Available-for-sale Securities, debt maturities, after one year through three years, Fair Value	229,760		227,951
Available-for-sale Securities, debt maturities, after three year through five years, Fair Value	429,909		397,372
Available-for-sale Securities, debt maturities, after five through ten years, fair value	411,680	[1]	458,442
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	2,176,517	[1]	1,980,827
Available-for-sale Securities, debt maturities, Fair Value	3,254,737	[1]	3,070,447
Held-to-maturity Securities, debt maturities, after one year through three years, Amortized Cost			51,524
Held-to-maturity Securities, debt maturities, after five through ten years, Amortized Cost	598,250		536,717
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost	2,257,969		3,630,613
Held-to-maturity Securities, Amortized cost	2,856,219		4,218,854	[2]
Held-to-maturity Securities, debt maturities, after one year through three years, Fair Value			51,709
Held-to-maturity Securities, debt maturities, after five through ten years, Fair Value	597,166		530,616
Held-to-maturity Securities, debt maturities, after ten years, Fair Value	2,230,717		3,540,582
Held-to-maturity Securities, debt maturities, Fair Value	$ 2,827,883		$ 4,122,907	[2]
[1]	Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis.
[2]	Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.

Available-For-Sale And Held-T_6

Available-For-Sale And Held-To-Maturity Securities (Contractual Maturities) (Details) - USD ($) $ in Thousands		Dec. 31, 2019		Dec. 31, 2018
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, within one year, Fair Value		$ 6,871	[1]	$ 5,855
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	659,669
Available-for-sale Securities, debt maturities, after five through ten years, fair value		411,680	[1]	458,442
Availably-for-sale Securities, debt maturities, after ten years, Fair Value		2,176,517	[1]	1,980,827
Available-for-sale Securities, debt maturities, Fair Value		3,254,737	[1]	3,070,447
Held-to-maturity Securities, debt maturities, after five year through ten, Amortized Cost		598,250		536,717
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost		2,257,969		3,630,613
Held-to-maturity Securities, Amortized cost		2,856,219		4,218,854	[2]
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]	1,749
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	3,318
Available-for-sale Securities, debt maturities, Fair Value	[1]	5,067
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]	5,875
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	18,422
Available-for-sale Securities, debt maturities, Fair Value	[1]	24,297
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]	5,122
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	614,283
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	55,906
Available-for-sale Securities, debt maturities, Fair Value	[1]	675,311
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]	325,540
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	1,267,349
Available-for-sale Securities, debt maturities, Fair Value	[1]	1,592,889
Held-to-maturity Securities, debt maturities, after five year through ten, Amortized Cost		598,250
Held-to-maturity Securities, debt maturities, after ten years, Amortized Cost		2,257,969
Held-to-maturity Securities, Amortized cost		2,856,219
Mortgage Backed Securities [Member] | Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	819
Available-for-sale Securities, debt maturities, after five through ten years, fair value	[1]	24,359
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	812,700
Available-for-sale Securities, debt maturities, Fair Value	[1]	837,878
Held-to-maturity Securities, Amortized cost	[2]			1,198,442
Mortgage Backed Securities [Member] | Commercial [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, debt maturities, after one year through five, Fair Value	[1]	32,457
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	77,080
Available-for-sale Securities, debt maturities, Fair Value	[1]	109,537
Held-to-maturity Securities, Amortized cost	[2]			$ 51,524
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, after one year through five, Fair Value	[1]	8,792
Availably-for-sale Securities, debt maturities, after ten years, Fair Value	[1]	966
Available-for-sale Securities, debt maturities, Fair Value	[1]	$ 9,758
[1]	Due to the immaterial amount of income recognized on tax-exempt securities, yields were not calculated on a tax-equivalent basis.
[2]	Held-to-maturity securities are carried in the consolidated statements of financial condition at amortized cost, and the changes in the value of these securities, other than impairment charges, are not reported on the consolidated financial statements.

Available-For-Sale And Held-T_7

Available-For-Sale And Held-To-Maturity Securities (Schedule Of Gross Unrealized Losses And The Estimated Fair Value By Length Of Time In A Loss Position) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	$ (8,321)
Available-for-sale Securities, Estimated fair value, Less than 12 months	913,040
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(6,472)
Available-for-sale Securities, Estimated fair value, 12 months or more	711,129
Available-for-sale Securities, Gross unrealized losses, Total	(14,793)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,624,169
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(31,400)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(34,300)
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(3,056)
Available-for-sale Securities, Estimated fair value, Less than 12 months	349,095
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(5,149)
Available-for-sale Securities, Estimated fair value, 12 months or more	596,161
Available-for-sale Securities, Gross unrealized losses, Total	(8,205)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	945,256
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss	(2,915)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	346,069
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	(31,381)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,980,673
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total	(34,296)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	2,326,742
Mortgage Backed Securities [Member] | Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(4,571)
Available-for-sale Securities, Estimated fair value, Less than 12 months	458,861
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(1,280)
Available-for-sale Securities, Estimated fair value, 12 months or more	112,001
Available-for-sale Securities, Gross unrealized losses, Total	(5,851)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	570,862
Mortgage Backed Securities [Member] | Commercial [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(694)
Available-for-sale Securities, Estimated fair value, Less than 12 months	105,084
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(20)
Available-for-sale Securities, Estimated fair value, 12 months or more	2,001
Available-for-sale Securities, Gross unrealized losses, Total	(714)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	107,085
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	(23)
Available-for-sale Securities, Estimated fair value, 12 months or more	966
Available-for-sale Securities, Gross unrealized losses, Total	(23)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 966

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 9,752,616	$ 8,581,647
Unamortized loan discount, net	(6,588)	(12,155)
Loans in process	(27,717)	27,984
Unamortized loan fees, net	1,310	5,972
Allowance for loan losses	(95,579)	(85,833)	$ (67,466)
Loans held for investment, net	$ 9,624,042	$ 8,517,615
Gross bank loans, Percent	100.00%	100.00%
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 3,438,953	$ 3,304,234
Allowance for loan losses	$ (69,949)	$ (68,367)	(54,474)
Gross bank loans, Percent	35.30%	38.50%
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 3,309,548	$ 2,875,014
Allowance for loan losses	$ (14,253)	$ (11,228)	(8,430)
Gross bank loans, Percent	33.90%	33.50%
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 2,098,211	$ 1,786,966
Allowance for loan losses	$ (2,361)	$ (1,978)	(2,088)
Gross bank loans, Percent	21.50%	20.80%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 428,549	$ 318,961
Allowance for loan losses	$ (3,564)	$ (1,778)	(1,520)
Gross bank loans, Percent	4.40%	3.70%
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 398,839	$ 138,245
Allowance for loan losses	$ (4,613)	$ (1,241)	(100)
Gross bank loans, Percent	4.10%	1.60%
Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 51,205	$ 38,098
Allowance for loan losses	$ (442)	$ (310)	(162)
Gross bank loans, Percent	0.50%	0.40%
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross bank loans	$ 27,311	$ 120,129
Allowance for loan losses	$ (194)	$ (88)	$ (16)
Gross bank loans, Percent	0.30%	1.50%

Bank Loans (Narrative) (Details

Bank Loans (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held for sale	$ 389,693	$ 205,557
Gains (losses) recognized from sale of loans	13,100	8,200	$ 12,300
Impaired loans more than 90 days past due	14,600	24,400
Troubled debt restructurings	200	9,100
Specific allowance	$ 8,182	$ 8,703
Collateralized loan portfolio	98.30%	98.40%
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 3,100,000	$ 3,100,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,700,000	2,700,000
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loans held for sale	389,700	205,600
Stifel Bancorp [Member] | Executive Officers and Directors [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding amount	24,500	28,800
Stifel Bancorp [Member] | Executive Officers and Directors of Certain Affiliated Entities [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans outstanding amount	$ 24,500	$ 28,800

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, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	$ 85,833	$ 67,466
Provision	9,977	18,366
Charge-offs	(386)	(14)
Recoveries	155	15
Ending Balance	95,579	85,833
Commercial And Industrial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	68,367	54,474
Provision	1,821	13,896
Charge-offs	(239)	(12)
Recoveries		9
Ending Balance	69,949	68,367
Residential Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	11,228	8,430
Provision	2,974	2,798
Charge-offs	(41)
Recoveries	92
Ending Balance	14,253	11,228
Securities-Based Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,978	2,088
Provision	383	(110)
Ending Balance	2,361	1,978
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,778	1,520
Provision	1,786	258
Ending Balance	3,564	1,778
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	1,241	100
Provision	3,372	1,141
Ending Balance	4,613	1,241
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	310	162
Provision	129	145
Recoveries	3	3
Ending Balance	442	310
Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	88	16
Provision	152	71
Charge-offs	(106)	(2)
Recoveries	60	3
Ending Balance	194	88
Qualitative [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning Balance	843	676
Provision	(640)	167
Ending Balance	$ 203	$ 843

Bank Loans (Unpaid Principal Ba

Bank Loans (Unpaid Principal Balances Of Loans and Amount Of Allowance Allocated Based Upon Impairment Method by Portfolio Segment) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	$ 8,182	$ 8,703
Allowance for Loan Losses, Collectively Evaluated for Impairment	87,397	77,130
Allowance for Loan Losses, Total	95,579	85,833	$ 67,466
Recorded Investment in Loans, Individually Evaluated for Impairment	14,587	24,401
Recorded Investment in Loans, Collectively Evaluated for Impairment	9,738,029	8,557,246
Recorded Investment in Loans, Total	9,752,616	8,581,647
Commercial And Industrial [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment	8,158	8,678
Allowance for Loan Losses, Collectively Evaluated for Impairment	61,791	59,689
Allowance for Loan Losses, Total	69,949	68,367	54,474
Recorded Investment in Loans, Individually Evaluated for Impairment	12,991	23,677
Recorded Investment in Loans, Collectively Evaluated for Impairment	3,425,962	3,280,557
Recorded Investment in Loans, Total	3,438,953	3,304,234
Residential Real Estate [Member]
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	14,229	11,204
Allowance for Loan Losses, Total	14,253	11,228	8,430
Recorded Investment in Loans, Individually Evaluated for Impairment	1,412	519
Recorded Investment in Loans, Collectively Evaluated for Impairment	3,308,136	2,874,495
Recorded Investment in Loans, Total	3,309,548	2,875,014
Securities-Based Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,361	1,978
Allowance for Loan Losses, Total	2,361	1,978	2,088
Recorded Investment in Loans, Collectively Evaluated for Impairment	2,098,211	1,786,966
Recorded Investment in Loans, Total	2,098,211	1,786,966
Commercial Real Estate [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	3,564	1,778
Allowance for Loan Losses, Total	3,564	1,778	1,520
Recorded Investment in Loans, Collectively Evaluated for Impairment	428,549	318,961
Recorded Investment in Loans, Total	428,549	318,961
Construction And Land [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	4,613	1,241
Allowance for Loan Losses, Total	4,613	1,241	100
Recorded Investment in Loans, Collectively Evaluated for Impairment	398,839	138,245
Recorded Investment in Loans, Total	398,839	138,245
Home Equity Lines Of Credit [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	442	310
Allowance for Loan Losses, Total	442	310	162
Recorded Investment in Loans, Individually Evaluated for Impairment	184	184
Recorded Investment in Loans, Collectively Evaluated for Impairment	51,021	37,914
Recorded Investment in Loans, Total	51,205	38,098
Other [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated for Impairment		1
Allowance for Loan Losses, Collectively Evaluated for Impairment	194	87
Allowance for Loan Losses, Total	194	88	16
Recorded Investment in Loans, Individually Evaluated for Impairment		21
Recorded Investment in Loans, Collectively Evaluated for Impairment	27,311	120,108
Recorded Investment in Loans, Total	27,311	120,129
Qualitative [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Losses, Collectively Evaluated for Impairment	203	843
Allowance for Loan Losses, Total	$ 203	$ 843	$ 676

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, 2019	Dec. 31, 2018
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 14,737	$ 25,099
Recorded Investment with No Allowance	1,647	789
Recorded Investment with Allowance	12,940	23,612
Total Recorded Investment	14,587	24,401
Related Allowance	8,182	8,703
Average Recorded Investment	15,587	24,336
Commercial And Industrial [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	12,991	23,677
Recorded Investment with No Allowance	51	242
Recorded Investment with Allowance	12,940	23,435
Total Recorded Investment	12,991	23,677
Related Allowance	8,158	8,678
Average Recorded Investment	14,172	23,807
Residential Real Estate [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	1,412	544
Recorded Investment with No Allowance	1,412	352
Recorded Investment with Allowance		167
Total Recorded Investment	1,412	519
Related Allowance	24	24
Average Recorded Investment	1,231	275
Home Equity Lines Of Credit [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	184	184
Recorded Investment with No Allowance	184	184
Total Recorded Investment	184	184
Average Recorded Investment	184	184
Other [Member]
Financing Receivable Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 150	694
Recorded Investment with No Allowance		11
Recorded Investment with Allowance		10
Total Recorded Investment		21
Related Allowance		1
Average Recorded Investment		$ 70

Bank Loans (Aging Of The Record

Bank Loans (Aging Of The Recorded Investment In Past Due Loans) (Details) - USD ($)		Dec. 31, 2019		Dec. 31, 2018
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 24,937,000		$ 22,170,000
Current Balance		9,727,679,000		8,559,477,000
Recorded Investment in Loans, Total		9,752,616,000		8,581,647,000
Non-accrual		14,373,000	[1]	15,298,000	[2]
Restructured		163,000	[1]	9,103,000	[2]
Total		14,536,000	[1]	24,401,000	[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		10,564,000		7,003,000
90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		14,373,000		15,167,000
Commercial And Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		12,940,000		14,656,000
Current Balance		3,426,013,000		3,289,578,000
Recorded Investment in Loans, Total		3,438,953,000		3,304,234,000
Non-accrual		12,940,000	[1]	14,741,000	[2]
Restructured	[2]			8,936,000
Total		12,940,000	[1]	23,677,000	[2]
Commercial And Industrial [Member] | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		12,940,000		14,656,000
Residential Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		11,725,000		7,347,000
Current Balance		3,297,823,000		2,867,667,000
Recorded Investment in Loans, Total		3,309,548,000		2,875,014,000
Non-accrual		1,249,000	[1]	352,000	[2]
Restructured		163,000	[1]	167,000	[2]
Total		1,412,000	[1]	519,000	[2]
Residential Real Estate [Member] | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		10,476,000		6,970,000
Residential Real Estate [Member] | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,249,000		377,000
Securities-Based Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current Balance		2,098,211,000		1,786,966,000
Recorded Investment in Loans, Total		2,098,211,000		1,786,966,000
Commercial Real Estate [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current Balance		428,549,000		318,961,000
Recorded Investment in Loans, Total		428,549,000		318,961,000
Construction And Land [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current Balance		398,839,000		138,245,000
Recorded Investment in Loans, Total		398,839,000		138,245,000
Home Equity Lines Of Credit [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		267,000		33,000
Current Balance		50,938,000		38,065,000
Recorded Investment in Loans, Total		51,205,000		38,098,000
Non-accrual		184,000	[1]	184,000	[2]
Total		184,000	[1]	184,000	[2]
Home Equity Lines Of Credit [Member] | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		83,000		33,000
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		5,000		134,000
Current Balance		27,306,000		119,995,000
Recorded Investment in Loans, Total		27,311,000		120,129,000
Non-accrual	[2]			21,000
Total	[2]			21,000
Other [Member] | 30 - 89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 5,000
Other [Member] | 90 or More Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due				$ 134,000
[1]	There were no loans past due 90 days and still accruing interest at December 31, 2019.
[2]	There were no loans past due 90 days and still accruing interest at December 31, 2018.

Bank Loans (Risk Category Of Lo

Bank Loans (Risk Category Of Loan Portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	$ 9,752,616	$ 8,581,647
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	9,676,864	8,531,191
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	49,244	34,991
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	13,568	15,444
Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	12,940	21
Commercial And Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,438,953	3,304,234
Commercial And Industrial [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,365,800	3,254,698
Commercial And Industrial [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	48,241	34,795
Commercial And Industrial [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	11,972	14,741
Commercial And Industrial [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	12,940
Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,309,548	2,875,014
Residential Real Estate [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	3,307,719	2,874,495
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	417
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	1,412	519
Securities-Based Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	2,098,211	1,786,966
Securities-Based Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	2,098,211	1,786,966
Commercial Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	428,549	318,961
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	427,963	318,961
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	586
Construction And Land [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	398,839	138,245
Construction And Land [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	398,839	138,245
Home Equity Lines Of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	51,205	38,098
Home Equity Lines Of Credit [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	51,021	37,914
Home Equity Lines Of Credit [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	184	184
Other [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	27,311	120,129
Other [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio	$ 27,311	119,912
Other [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio		196
Other [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total risk category of loan portfolio		$ 21

Fixed Assets (Summary Of Fixed

Fixed Assets (Summary Of Fixed Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Abstract]
Office equipment	$ 288,975	$ 251,542
Aircraft engine operating leases	206,315	214,065
Leasehold improvements	171,103	154,550
Building	58,804	55,342
Fixed assets, gross	725,197	675,499
Accumulated depreciation and amortization	(343,032)	(302,560)
Fixed assets, net	$ 382,165	$ 372,939

Fixed Assets (Narrative) (Detai

Fixed Assets (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Air_craft	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Property Plant And Equipment [Abstract]
Depreciation and amortization	$ 38,369	$ 27,896	$ 32,495
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

Fixed Assets (Summary Of Minimu

Fixed Assets (Summary Of Minimum Future Payments) (Details) - Aircraft [Member] $ in Thousands	Dec. 31, 2019USD ($)
Operating Leased Assets [Line Items]
2020	$ 14,880
2021	12,240
2022	8,834
2023	6,517
2024	5,449
Thereafter	6,288
Operating leases future minimum payments	$ 54,208

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance	$ 1,034,679	$ 1,034,679
Goodwill, Net Additions	159,395
Goodwill, Ending balance	1,194,074	1,034,679	$ 1,034,679
Intangible assets, Beginning balance	119,655	119,655
Intangible assets, Net Additions	58,133
Intangible assets, Amortization	(16,015)	(12,557)	(12,135)
Intangible assets, Ending balance	161,773	119,655	119,655
Global Wealth Management [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance		340,395
Goodwill, Net Additions	4,586
Goodwill, Ending balance	344,981		340,395
Intangible assets, Beginning balance		60,532
Intangible assets, Amortization	(7,253)
Intangible assets, Ending balance	53,279		60,532
Institutional Group [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill, Beginning balance		694,284
Goodwill, Net Additions	154,809
Goodwill, Ending balance	849,093		694,284
Intangible assets, Beginning balance		$ 59,123
Intangible assets, Net Additions	58,133
Intangible assets, Amortization	(8,762)
Intangible assets, Ending balance	$ 108,494		$ 59,123

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 259,102	$ 200,225
Accumulated Amortization	97,329	80,570
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	198,248	160,745
Accumulated Amortization	75,987	65,254
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	28,123	26,831
Accumulated Amortization	13,649	11,755
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	8,615	8,615
Accumulated Amortization	2,985	816
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	8,319	2,603
Accumulated Amortization	2,828	1,452
Investment Banking Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,245	1,431
Accumulated Amortization	1,787	$ 1,293
Acquired Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	840
Accumulated Amortization	93
Estimated GMP Capital Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 10,712

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Goodwill and Intangible Assets [Line Items]
Amortization of intangible assets	$ 16,015	$ 12,557	$ 12,135
Customer Relationships [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets	10 years 9 months 18 days
Trade Name [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets	10 years
Core Deposits [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets	4 years 2 months 12 days
Non-Compete Agreements [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets	7 years
Investment Banking Backlog [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets	8 years 9 months 18 days
Acquired Technology [Member]
Schedule of Goodwill and Intangible Assets [Line Items]
Weighted-average remaining lives of intangible assets	2 years 8 months 12 days

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Amortization Expense In Future Periods) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2020	$ 18,796
2021	17,686
2022	16,310
2023	15,021
2024	14,034
Thereafter	77,808
Future amortization expense total	$ 159,655

Borrowings and Federal Home L_2

Borrowings and Federal Home Loan Bank Advances (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019USD ($)item
Short-term Debt [Line Items]
Uncommitted secured lines of credit	$ 835,000,000
Number of banks | item	4
Daily borrowings under our uncommitted secured lines	$ 276,000,000
Compensating balances	0
Federal home loan advances, floating-rate	250,000,000
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Committed revolving credit facility with bank and broker dealer - subsidiary	$ 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]
Committed revolving credit facility with bank and broker dealer - subsidiary	$ 250,000,000
Credit facility expiration date	2020-06
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	1.76%

Senior Notes (Summary of Senior

Senior Notes (Summary of Senior Notes) (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2017	Dec. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Long-term Debt, gross		$ 1,025,000	$ 1,025,000
Debt issuance costs, net		(7,990)	(9,027)
Senior notes, net		1,017,010	1,015,973
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 3.50% due 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt, gross	[2]	300,000	300,000
Senior notes, net					$ 300,000
Senior notes 5.20% due 2047 [Member]
Debt Instrument [Line Items]
Long-term Debt, gross	[3]	$ 225,000	$ 225,000
Senior notes, net				$ 200,000
[1]	In July 2014, we sold in a registered underwritten public offering, $300.0 million in aggregate principal amount of 4.250% senior notes due July 2024
[2]	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
[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 . Interest on the senior notes is payable quarterly in arrears on January 15, April 15, July 15, and October 15. On or after October 15, 2022, we may redeem some or all of the senior notes at any time at a redemption price equal to 100 % of the principal amount of the notes being redeemed plus accrued interest thereon to the redemption date. On October 27, 2017, we completed the sale of an additional $ 25.0 million aggregate principal amount of Notes pursuant to the over-allotment option.

Senior Notes (Summary of Seni_2

Senior Notes (Summary of Senior Notes) (Parenthetical) (Details) - USD ($) $ in Thousands	Oct. 27, 2017	Jul. 31, 2016	Dec. 31, 2019	Dec. 31, 2018	Oct. 31, 2017	Dec. 31, 2015	Jul. 31, 2014
Debt Instrument [Line Items]
Senior notes			$ 1,017,010	$ 1,015,973
Senior notes 4.250% due 2024 [Member]
Debt Instrument [Line Items]
Stated interest rate			4.25%				4.25%
Senior notes							$ 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 3.50% due 2020 [Member]
Debt Instrument [Line Items]
Stated interest rate			3.50%			3.50%
Senior notes						$ 300,000
Debt instrument, maturity date			Dec. 31, 2020
Redemption price, percentage of principal amount			100.00%
Senior notes 5.20% due 2047 [Member]
Debt Instrument [Line Items]
Stated interest rate			5.20%		5.20%
Senior notes					$ 200,000
Debt instrument, maturity date			Oct. 31, 2047
Redemption price, percentage of principal amount			100.00%
Additional issuance of long-term debt	$ 25,000

Senior Notes (Schedule Of Corpo

Senior Notes (Schedule Of Corporate Debt Principal Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Senior notes, net	$ 1,017,010	$ 1,015,973
Non Recourse Debt [Member]
Debt Instrument [Line Items]
2020	300,000
2024	500,000
Thereafter	225,000
Senior notes, net	$ 1,025,000

Bank Deposits (Schedule Of Depo

Bank Deposits (Schedule Of Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Money market and savings accounts	$ 13,530,670	$ 13,609,612
Demand deposits (interest-bearing)	1,113,296	392,765
Certificates of deposit	522,958	1,763,336
Demand deposits (non-interest-bearing)	165,657	97,900
Bank deposits	$ 15,332,581	$ 15,863,613

Bank Deposits (Narrative) (Deta

Bank Deposits (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Bank Deposits [Line Items]
Weighted average interest rate on deposits	0.64%	0.60%
Brokerage Customers Deposits [Member]
Bank Deposits [Line Items]
Deposits of related parties	$ 13,900	$ 15,200
Stifel Nicolaus [Member]
Bank Deposits [Line Items]
Interest bearing and time deposits of executive officers, directors, and affiliates	$ 6.7	$ 6.5

Bank Deposits (Scheduled Maturi

Bank Deposits (Scheduled Maturities of Certificates of Deposit) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits Liabilities Balance Sheet Reported Amounts [Abstract]
Within one year	$ 5,305	$ 4,858
One to three years	360	623
Three to five years	13	140
Certificates of deposit, less than $100,000	5,678	5,621
Within one year	441,341	1,535,784
One to three years	68,855	195,159
Three to five years	7,084	26,772
Certificates of deposit, $100,000 and greater	517,280	1,757,715
Total certificates of deposit	$ 522,958	$ 1,763,336

Derivative Instruments And He_3

Derivative Instruments And Hedging Activities (Schedule Of Notional Values And Fair Values Of Derivative Instruments) (Details) - Cash Flow Interest Rate Contracts [Member] - Designated As Hedging Instrument [Member] - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative Assets, Notional Value	$ 250,000,000	$ 540,000,000
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets , Fair Value	$ 1,086,000	$ 7,683,000

Derivative Instruments And He_4

Derivative Instruments And Hedging Activities (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
General Discussion Of Derivative Instruments And Hedging Activities [Abstract]
Average remaining life of interest rate swap agreements	1 year 1 month 6 days
Estimated derivatives to be reclassified as increase to interest expense	$ 0.8

Derivative Instruments And He_5

Derivative Instruments And Hedging Activities (Schedule Of Derivative Instruments In Consolidated Statements Of Operations) (Details) - Cash Flow Interest Rate Contracts [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in OCI	$ 2,641	$ (3,876)	$ 1,085
Gain/(loss) Reclassified From OCI Into Income	$ 3,307	$ 4,947	$ (635)

Debentures To Stifel Financia_3

Debentures To Stifel Financial Capital Trusts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019		Dec. 31, 2016	Dec. 31, 2018		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, 2019	Dec. 31, 2018
Offsetting [Abstract]
Gross amounts of recognized assets, Securities borrowing	[1]	$ 135,373	$ 109,795
Net amounts presented in the Statement of Financial Condition, Securities borrowing	[1]	135,373	109,795
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities borrowing	[1]	(52,319)	(57,328)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities borrowing	[1]	(74,760)	(45,005)
Securities borrowed, Net amount	[1]	8,294	7,462
Gross amounts of recognized assets, Reverse repurchase agreements	[2]	385,008	699,900
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	[2]	385,008	699,900
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	[2]	(59,892)	(365,822)
Gross amounts not offset in the Statement of Financial Position, Collateral received, Securities purchased under agreements to resell	[2]	(325,096)	(329,740)
Securities purchased under agreements to resell, Net amount	[2]	20	4,338
Gross amounts of recognized assets, Cash flow interest rate contracts		1,086	7,683
Net amounts presented in the Statement of Financial Condition, Cash flow interest rate contracts		1,086	7,683
Cash flow interest rate contracts, Net amount		1,086	7,683
Gross amounts of recognized assets		521,467	817,378
Net amounts presented in the Statements of Financial Condition		521,467	817,378
Gross amounts not offset in the Statement of Financial Position		(112,211)	(423,150)
Gross amounts not offset in the Statement of Financial Position, Collateral received		(399,856)	(374,745)
Net amount		$ 9,400	$ 19,483
[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 $385.3 million and $695.6 million at December 31, 2019 and 2018, respectively.

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, 2019	Dec. 31, 2018
Offsetting Assets [Line Items]
Fair value of securities pledged as collateral	[1]	$ 325,096	$ 329,740
Fair Value Of Securities Pledged As Collateral [Member]
Offsetting Assets [Line Items]
Fair value of securities pledged as collateral		$ 385,300	$ 695,600
[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 $385.3 million and $695.6 million at December 31, 2019 and 2018, 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, 2019	Dec. 31, 2018
Offsetting [Abstract]
Gross amounts of recognized liabilities, Securities lending	[1]	$ (608,333)	$ (392,163)
Net amounts presented in the Statement of Financial Condition, Securities lending	[1]	(608,333)	(392,163)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities lending	[1]	52,319	57,328
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities lending	[1]	555,782	325,110
Securities lending, Net amount	[1]	(232)	(9,725)
Gross amounts of recognized liabilities, Securities purchased under agreements to resell	[2]	(391,634)	(535,394)
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell	[2]	(391,634)	(535,394)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell	[2]	59,892	365,822
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities purchased under agreements to resell	[2]	331,742	169,572
Gross amounts of recognized liabilities		(999,967)	(927,557)
Net amounts presented in the Statement of Financial Condition		(999,967)	(927,557)
Gross amounts not offset in the Statement of Financial Position, Financial instruments		112,211	423,150
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged		887,524	494,682
Net amount		$ (232)	$ (9,725)
[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 $407.3 million and $558.6 million at December 31, 2019 and 2018, 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, 2019	Dec. 31, 2018
Offsetting Liabilities [Line Items]
Fair value of securities pledged as collateral to counter party	[1]	$ 331,742	$ 169,572
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		$ 407,300	$ 558,600
[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 $407.3 million and $558.6 million at December 31, 2019 and 2018, respectively.

Commitments, Guarantees, And _2

Commitments, Guarantees, And Contingencies (Narrative) (Details) $ in Millions	Dec. 31, 2019USD ($)
Loss Contingencies [Line Items]
Outstanding committed capital to certain entities	$ 2.2
TBA [Member]
Loss Contingencies [Line Items]
Fair value of the TBA securities	231.9
Purchase Commitments [Member] | TBA [Member]
Loss Contingencies [Line Items]
Estimated fair value of the purchase commitments	$ 231.9

Regulatory Capital Requiremen_3

Regulatory Capital Requirements (Narrative) (Details) $ in Millions	Dec. 31, 2019USD ($)
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	21.20%
Net capital	$ 369.6
Excess of minimum required net capital	334.7
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, 2019USD ($)
Stifel Financial Corp. [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 2,287,085
Tier 1 capital, Actual Ratio	17.60%
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 778,883
Tier 1 capital For Capital Adequacy Purposes, Ratio	6.00%
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,038,510
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%
Total capital, Actual Amount	$ 2,441,808
Total capital, Actual Ratio	18.80%
Total capital For Capital Adequacy Purposes, Amount	$ 1,038,510
Total capital For Capital Adequacy Purposes, Ratio	8.00%
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,298,138
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%
Tier 1 leverage, Actual Amount	$ 2,287,085
Tier 1 leverage, Actual Ratio	10.00%
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 917,167
Tier 1 leverage For Capital Adequacy Purposes, Ratio	4.00%
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 1,146,459
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%
Stifel Financial Corp. [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 1,972,832
Tier 1 capital, Actual Ratio	15.20%
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 584,162
Tier 1 capital For Capital Adequacy Purposes, Ratio	4.50%
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 843,790
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%
Stifel Bank & Trust [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 995,491
Tier 1 capital, Actual Ratio	12.10%
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 493,503
Tier 1 capital For Capital Adequacy Purposes, Ratio	6.00%
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 658,004
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%
Total capital, Actual Amount	$ 1,090,271
Total capital, Actual Ratio	13.30%
Total capital For Capital Adequacy Purposes, Amount	$ 658,004
Total capital For Capital Adequacy Purposes, Ratio	8.00%
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 822,505
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%
Tier 1 leverage, Actual Amount	$ 995,491
Tier 1 leverage, Actual Ratio	7.10%
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 559,104
Tier 1 leverage For Capital Adequacy Purposes, Ratio	4.00%
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 698,880
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%
Stifel Bank & Trust [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 991,238
Tier 1 capital, Actual Ratio	12.10%
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 370,127
Tier 1 capital For Capital Adequacy Purposes, Ratio	4.50%
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 534,628
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%
Stifel Bank [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 154,299
Tier 1 capital, Actual Ratio	16.90%
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 54,622
Tier 1 capital For Capital Adequacy Purposes, Ratio	6.00%
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 72,829
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%
Total capital, Actual Amount	$ 164,020
Total capital, Actual Ratio	18.00%
Total capital For Capital Adequacy Purposes, Amount	$ 72,829
Total capital For Capital Adequacy Purposes, Ratio	8.00%
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 91,036
Total capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%
Tier 1 leverage, Actual Amount	$ 154,299
Tier 1 leverage, Actual Ratio	7.10%
Tier 1 leverage For Capital Adequacy Purposes, Amount	$ 86,876
Tier 1 leverage For Capital Adequacy Purposes, Ratio	4.00%
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 108,595
Tier 1 leverage To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%
Stifel Bank [Member] | Common Stock [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Tier 1 capital, Actual Amount	$ 154,299
Tier 1 capital, Actual Ratio	16.90%
Tier 1 capital For Capital Adequacy Purposes, Amount	$ 40,966
Tier 1 capital For Capital Adequacy Purposes, Ratio	4.50%
Tier 1 capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 59,173
Tier 1 To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%

Operating Leases (Narrative) (D

Operating Leases (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Lessee Lease Description [Line Items]
Right-of-use assets	$ 725,800
Lease liabilities	707,039
Operating lease costs	90,354
Occupancy and Equipment Rental [Member]
Lessee Lease Description [Line Items]
Operating lease costs	$ 87,200
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	11 years

Operating Leases - Schedule of

Operating Leases - Schedule of Net Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Lessee Disclosure [Abstract]
Operating lease cost	$ 90,354
Short-term lease cost	1,479
Variable lease cost	79
Sublease income	(4,761)
Net lease cost	87,151
Operating lease cash flows	$ 89,976
Weighted-average remaining lease term	11 years 4 months 24 days
Weighted-average discount rate	4.58%

Operating Leases - Schedule o_2

Operating Leases - Schedule of Information About Operating Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019USD ($)
Lessee Disclosure [Abstract]
2020	$ 94,093
2021	88,436
2022	86,594
2023	85,491
2024	83,517
Thereafter	479,986
Total undiscounted lease payments	918,117
Imputed interest	(211,078)
Total operating lease liabilities	$ 707,039

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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues:
Revenue from contracts with customers									$ 2,352,237	$ 2,187,145
Other									19,287	15,568
Total revenue from contracts with customers									2,352,237	2,187,145
Other sources of revenue:
Interest	$ 167,087	$ 178,784	$ 187,940	$ 191,071	$ 184,534	$ 169,760	$ 154,421	$ 137,734	724,882	646,449	$ 454,381
Principal transactions									404,751	351,378	396,826
Other									33,091	9,985
Total revenues	$ 975,699	$ 865,716	$ 853,678	$ 819,868	$ 851,325	$ 786,810	$ 780,011	$ 776,811	3,514,961	3,194,957	2,996,462
Commissions [Member]
Revenues:
Revenue from contracts with customers									667,494	657,732	678,904
Investment Banking [Member]
Revenues:
Revenue from contracts with customers									817,421	707,670	726,763
Asset Management and Service Fees [Member]
Revenues:
Revenue from contracts with customers									$ 848,035	$ 806,175	$ 702,064

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, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Commissions		$ 667,494	$ 657,732
Investment banking		817,421	707,670
Revenue from contracts with customers		2,352,237	2,187,145
Other		19,287	15,568
Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	369,442	336,188
Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	447,979	371,482
Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		848,035	806,175	$ 702,064
Global Wealth Management [Member]
Disaggregation Of Revenue [Line Items]
Commissions		477,401	472,135
Investment banking		37,915	31,374
Revenue from contracts with customers		1,379,730	1,321,266
Other		16,437	11,625
Global Wealth Management [Member] | Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	37,915	31,293
Global Wealth Management [Member] | Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]		81
Global Wealth Management [Member] | Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		847,977	806,132
Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Commissions		190,093	185,597
Investment banking		779,506	676,296
Revenue from contracts with customers		969,657	861,936
Institutional Group [Member] | Capital Raising [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	331,527	304,895
Institutional Group [Member] | Advisory Fees [Member]
Disaggregation Of Revenue [Line Items]
Investment banking	[1]	447,979	371,401
Institutional Group [Member] | Asset Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		58	43
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		2,850	3,943
Other		2,850	3,943
United States [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		2,205,338	2,050,460
United States [Member] | Global Wealth Management [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		1,379,730	1,321,266
United States [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		822,758	725,251
United States [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		2,850	3,943
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		135,529	130,979
United Kingdom [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		135,529	130,979
Other [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		11,370	5,706
Other [Member] | Institutional Group [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers		$ 11,370	$ 5,706
[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, 2019	Dec. 31, 2018
Revenue From Contract With Customer [Abstract]
Receivables related to contract with customers	$ 151,300,000	$ 116,700,000
Impairment related to receivables	0
Deferred Revenue	$ 11,300,000	$ 11,100,000

Interest Income and Interest _3

Interest Income and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Income Expense Net [Abstract]
Loans held for investment, net									$ 379,848	$ 300,541	$ 206,084
Investment securities									231,021	252,200	187,731
Margin balances									52,008	49,515	37,218
Financial instruments owned									23,528	21,407	17,563
Other									38,477	22,786	5,785
Total interest income									724,882	646,449	454,381
Bank deposits									95,813	82,256	12,661
Senior notes									44,507	44,610	35,338
Federal Home Loan Bank advances									7,872	15,173	8,305
Other									29,739	28,037	13,726
Total interest expense	$ 31,448	$ 44,144	$ 52,891	$ 49,448	$ 57,876	$ 48,468	$ 37,279	$ 26,453	$ 177,931	$ 170,076	$ 70,030

Employee Incentive, Deferred _3

Employee Incentive, Deferred Compensation, And Retirement Plans (Details) - USD ($) $ in Thousands

1 Months Ended

3 Months Ended

12 Months Ended

Dec. 31, 2017

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Shares authorized to grant

3,300,000

Stock-based compensation

$ 102,190

$ 100,789

$ 140,461

Tax benefit related to stock-based compensation

11,900

4,000

Provision for income tax expense (benefit)

$ 31,925

$ 40,632

$ 38,225

$ 38,370

$ 41,869

$ 36,672

$ 31,060

$ 30,793

149,152

140,394

86,665

Restricted stock units, charges at the date of modification

55,900

Vesting of outstanding debenture awards

$ 51,400

Contributions to profit sharing

13,400

12,800

7,100

Deferred Awards [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Unrecognized compensation expense related to non-vested options

$ 448,400

$ 448,400

Weighted-average period, compensation cost expected to recognized, in years

2 years 9 months 18 days

Fair value of stock awards vested

$ 120,400

Incentive Stock Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation

$ 135,500

$ 111,800

246,700

Incentive Stock Plan [Member] | ASU No. 2016-09 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Provision for income tax expense (benefit)

$ (64,700)

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

15,600,000

15,600,000

Unvested stock awards outstanding

13,500,000

13,500,000

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, Company match

25.00%

25.00%

Percentage of earnings deferred into company stock units, Additional elective deferral

1.00%

Minimum [Member] | Deferred Compensation Plans [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

1 year

Minimum [Member] | Deferred Awards [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

1 year

Minimum [Member] | Restricted Stock Award [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

1 year

Minimum [Member] | Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

1 year

Minimum [Member] | Performance-based Restricted Stock Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Potential percentage of converted shares

0.00%

Minimum [Member] | SWAP Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

1 year

Maximum [Member] | Deferred Compensation Plans [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

8 years

Maximum [Member] | Deferred Awards [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

10 years

Maximum [Member] | Restricted Stock Award [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

5 years

Maximum [Member] | Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

10 years

Maximum [Member] | Performance-based Restricted Stock Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Potential percentage of converted shares

200.00%

Maximum [Member] | SWAP Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Awards vesting period in years

10 years

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, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested, Beginning balance | shares	14,117
Granted | shares	2,871
Vested | shares	(2,656)
Cancelled | shares	(864)
Unvested, Ending balance | shares	13,468
Unvested, Weighted-average grant date fair value, Beginning balance | $ / shares	$ 46.75
Granted, Weighted-average grant date fair value | $ / shares	49.60
Vested, Weighted-average grant date fair value | $ / shares	45.34
Cancelled, Weighted-average grant date fair value | $ / shares	43.87
Unvested, Weighted-average grant date fair value, Ending balance | $ / shares	$ 47.83

Off-Balance Sheet Credit Risk (

Off-Balance Sheet Credit Risk (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 13, 2018
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
General settlement period of securities transactions	2 days
Fair value of securities accepted as collateral permitted to sell or repledge	$ 2,300	$ 2,400
Fair value of collateral securities sold or repledged	391.6	535.4
Outstanding commitments to originate loans	384.5	146.7
Letters of credit outstanding	38.3	$ 26.3
Unused Lines Of Credit [Member]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Unused lines of credit to commercial and consumer borrowers	$ 1,500		$ 919.5
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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Current taxes: Federal									$ 123,802	$ 89,971	$ (29,396)
Current taxes: State									30,464	36,070	(334)
Current taxes: Foreign									1,684	99	(1,734)
Current taxes: Total									155,950	126,140	(31,464)
Deferred taxes: Federal									(7,027)	11,932	114,842
Deferred taxes: State									4,266	2,267	1,728
Deferred taxes: Foreign									(4,037)	55	1,559
Deferred Income Tax Expense (Benefit), Total									(6,798)	14,254	118,129
Provision for income taxes	$ 31,925	$ 40,632	$ 38,225	$ 38,370	$ 41,869	$ 36,672	$ 31,060	$ 30,793	$ 149,152	$ 140,394	$ 86,665

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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Statutory rate									$ 125,485	$ 112,215	$ 94,338
State income taxes, net of federal income tax									28,333	30,762	6,721
Change in uncertain tax position									2,661	(617)	1,544
Foreign tax rate difference									(629)	(318)	(412)
Excess tax benefit from stock-based compensation									(9,670)	(3,700)	(57,431)
Revaluation of deferred tax assets										(3,006)	42,443
Other, net									2,972	5,058	(538)
Provision for income taxes	$ 31,925	$ 40,632	$ 38,225	$ 38,370	$ 41,869	$ 36,672	$ 31,060	$ 30,793	$ 149,152	$ 140,394	$ 86,665

Income Taxes (Deferred Tax Asse

Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Lease liabilities	$ 181,607
Deferred compensation	80,389	$ 74,916
Receivable reserves	33,199	30,252
Net operating loss carryforwards	28,781	29,699
Accrued expenses	26,166	19,832
Unrealized loss on investments		10,635
Other	3,210	3,066
Total deferred tax assets	353,352	168,400
Valuation allowance	(5,042)	(3,944)
Deferred tax assets	348,310	164,456
Lease ROU asset	(180,598)
Goodwill and other intangibles	(46,625)	(42,045)
Depreciation	(7,231)	(6,629)
Unrealized gain on investments	(5,619)
Prepaid expenses	(3,857)	(3,774)
Total deferred tax liabilities	(243,930)	(52,448)
Net deferred tax asset	$ 104,380	$ 112,008

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax [Line Items]
Corporate tax rate	21.00%		35.00%
Additional tax benefit		$ 3,000,000
Net operating loss carryforward	$ 236,200,000
Valuation allowance increase	1,100,000
Deferred tax assets, net	104,380,000	112,008,000
Unrecognized tax benefits	3,387,000	312,000	$ 3,180,000	$ 1,800,000
Unrecognized tax benefits, accrued interest and penalties	200,000	100,000
Accounts Payable and Accrued Expenses [Member]
Income Tax [Line Items]
Current taxes payable	15,000,000	8,400,000
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, 2019	Dec. 31, 2018	Dec. 31, 2017
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
Beginning balance	$ 312	$ 3,180	$ 1,800
Increase related to prior year tax positions	2,173	4	3,036
Decrease related to prior year tax positions	(54)	(33)	(287)
Increase related to current year tax positions	956	191
Decrease related to settlements with taxing authorities		(3,030)	(171)
Decrease related to lapsing of statute of limitations			(1,198)
Ending balance	$ 3,387	$ 312	$ 3,180

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	12 Months Ended
	Dec. 31, 2019Segment
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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Segment Reporting Information [Line Items]
Net revenues		$ 944,251	$ 821,572	$ 800,787	$ 770,420	$ 793,449	$ 738,342	$ 742,732	$ 750,358	$ 3,337,030	[1]	$ 3,024,881	[1]	$ 2,926,432	[1]
Income/(loss) before income taxes										599,138		534,362		269,536
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]									2,130,559		1,990,319		1,822,218
Income/(loss) before income taxes										785,960		737,003		626,906
Institutional Group [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]									1,214,017		1,055,495		1,110,768
Income/(loss) before income taxes										175,670		157,051		217,981
Other Segments [Member]
Segment Reporting Information [Line Items]
Net revenues	[1]									(7,546)		(20,933)		(6,554)
Income/(loss) before income taxes										$ (362,492)		$ (359,692)		$ (575,351)
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2019, 2018, and 2017.

Segment Reporting (Schedule O_2

Segment Reporting (Schedule Of Operating Information, Segment) (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
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, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Total assets	$ 24,610,225	$ 24,519,598
Global Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets	20,675,580	21,040,224
Institutional Group [Member]
Segment Reporting Information [Line Items]
Total assets	3,668,723	3,238,617
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets	$ 265,922	$ 240,757

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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Segment Reporting Information [Line Items]
Total net revenues	$ 944,251	$ 821,572	$ 800,787	$ 770,420	$ 793,449	$ 738,342	$ 742,732	$ 750,358	$ 3,337,030	[1]	$ 3,024,881	[1]	$ 2,926,432	[1]
United States [Member]
Segment Reporting Information [Line Items]
Total net revenues									3,154,285		2,855,955		2,783,175
United Kingdom [Member]
Segment Reporting Information [Line Items]
Total net revenues									163,552		156,557		129,288
Other [Member]
Segment Reporting Information [Line Items]
Total net revenues									$ 19,193		$ 12,369		$ 13,969
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2019, 2018, and 2017.

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, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income applicable to Stifel Financial Corp.	$ 130,690	$ 109,414	$ 109,085	$ 99,207	$ 114,062	$ 103,858	$ 87,287	$ 88,761	$ 448,396	$ 393,968	$ 182,871
Preferred dividends	4,843	4,844	5,288	2,344	2,344	2,343	2,344	2,344	17,319	9,375	9,375
Net income available to common shareholders	$ 125,847	$ 104,570	$ 103,797	$ 96,863	$ 111,718	$ 101,515	$ 84,943	$ 86,417	$ 431,077	$ 384,593	$ 173,496
Average shares used in basic computation	70,470	71,197	72,519	71,700	71,666	71,919	71,692	71,999	71,998	71,786	68,562
Dilutive effect of stock options and units									6,587	9,535	12,473
Average shares used in diluted computation	77,813	78,144	79,079	79,210	80,706	81,484	81,299	81,789	78,585	81,321	81,035
Basic	$ 1.79	$ 1.47	$ 1.43	$ 1.35	$ 1.56	$ 1.41	$ 1.18	$ 1.20	$ 5.99	$ 5.36	$ 2.53
Diluted	$ 1.62	$ 1.34	$ 1.31	$ 1.22	$ 1.38	$ 1.25	$ 1.04	$ 1.06	$ 5.49	$ 4.73	$ 2.14

Earnings Per Share (Details)

Earnings Per Share (Details) - $ / shares	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Cash dividends declared per common share	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.60	$ 0.48	$ 0.20	$ 0.20
Cash dividends paid per common share									$ 0.60	$ 0.48		$ 0.20

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 21, 2019	Aug. 31, 2018	Jan. 03, 2017	Jul. 11, 2016	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Number of shares authorized to be repurchased						5,100,000
Purchase of treasury stock						$ 215.4	$ 170.2
Treasury stock acquired, Shares,						3,900,000	3,400,000
Treasury Stock Acquired, Average Cost Per Share						$ 54.94	$ 49.59
Common stock reissued						1,400,000	500,000
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, or following a regulatory capital treatment event, as defined.
Non-Cumulative Perpetual Preferred Stock, Series A [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
Series B Preferred Stock [Member] | Over-Allotment Option [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Issuance of preferred stock					$ 10
Business Bancshares, Inc. [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Stock issued for acquisition		2,000,000
City Securities [Member]
Business Acquisition Equity Interests Issued Or Issuable [Line Items]
Stock issued for acquisition			200,000

Variable Interest Entities (Det

Variable Interest Entities (Details) $ in Millions	Jul. 31, 2018Air_craft	Dec. 31, 2019USD ($)Air_craft
Variable Interest Entity [Line Items]
Assets in partnership | $		$ 258.2
Number of Aircraft engines		14
Jet Holding S.a.r.l. [Member]
Variable Interest Entity [Line Items]
Ownership interest	100.00%
FAN Engine Securitization Ltd [Member]
Variable Interest Entity [Line Items]
Number of Aircraft engines	24
FAN Engine Securitization Ltd [Member] | Jet Holding S.a.r.l. [Member]
Variable Interest Entity [Line Items]
Ownership interest	100.00%

Subsequent Events (Details)

Subsequent Events (Details)	12 Months Ended
	Dec. 31, 2019Event
Subsequent Events [Abstract]
Number of types of subsequent events	2

Quarterly Financial Informati_3

Quarterly Financial Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Operating revenues	$ 808,612	$ 686,932	$ 665,738	$ 628,797	$ 666,791	$ 617,050	$ 625,590	$ 639,077
Interest income	167,087	178,784	187,940	191,071	184,534	169,760	154,421	137,734	$ 724,882		$ 646,449		$ 454,381
Total revenues	975,699	865,716	853,678	819,868	851,325	786,810	780,011	776,811	3,514,961		3,194,957		2,996,462
Interest expense	31,448	44,144	52,891	49,448	57,876	48,468	37,279	26,453	177,931		170,076		70,030
Net revenues	944,251	821,572	800,787	770,420	793,449	738,342	742,732	750,358	3,337,030	[1]	3,024,881	[1]	2,926,432	[1]
Total non-interest expenses	781,658	670,818	652,805	632,611	637,518	597,812	624,385	630,804	2,737,892		2,490,519		2,656,896
Income before income tax expense	162,593	150,754	147,982	137,809	155,931	140,530	118,347	119,554	599,138		534,362		269,536
Provision for income taxes	31,925	40,632	38,225	38,370	41,869	36,672	31,060	30,793	149,152		140,394		86,665
Net income	130,668	110,122	109,757	99,439					449,986		393,968		182,871
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	114,062	103,858	87,287	88,761	448,396		393,968		182,871
Preferred dividends	4,843	4,844	5,288	2,344	2,344	2,343	2,344	2,344	17,319		9,375		9,375
Net income available to common shareholders	$ 125,847	$ 104,570	$ 103,797	$ 96,863	$ 111,718	$ 101,515	$ 84,943	$ 86,417	$ 431,077		$ 384,593		$ 173,496
Earnings per common share
Basic	$ 1.79	$ 1.47	$ 1.43	$ 1.35	$ 1.56	$ 1.41	$ 1.18	$ 1.20	$ 5.99		$ 5.36		$ 2.53
Diluted	1.62	1.34	1.31	1.22	1.38	1.25	1.04	1.06	5.49		4.73		2.14
Cash dividends declared per common share	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.60		$ 0.48		$ 0.20		$ 0.20
Weighted-average number of common shares outstanding:
Basic	70,470	71,197	72,519	71,700	71,666	71,919	71,692	71,999	71,998		71,786		68,562
Diluted	77,813	78,144	79,079	79,210	80,706	81,484	81,299	81,789	78,585		81,321		81,035
[1]	No individual client accounted for more than 10 percent of total net revenues for the years ended December 31, 2019, 2018, and 2017.