Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2020 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Quarterly Financial Information Disclosure [Abstract] | ||||||||||||||||
| Operating revenues | $ 954,549 | $ 782,711 | $ 780,533 | $ 776,214 | $ 808,612 | $ 686,932 | $ 665,738 | $ 628,797 | ||||||||
| Interest revenue | 119,876 | 114,411 | 128,368 | 161,177 | 167,087 | 178,784 | 187,940 | 191,071 | $ 523,832 | $ 724,882 | $ 646,449 | |||||
| Total revenues | 1,074,425 | 897,122 | 908,901 | 937,391 | 975,699 | 865,716 | 853,678 | 819,868 | 3,817,839 | 3,514,961 | 3,194,957 | |||||
| Interest expense | 14,515 | 13,822 | 13,084 | 24,357 | 31,448 | 44,144 | 52,891 | 49,448 | 65,778 | 177,931 | 170,076 | |||||
| Net revenues | 1,059,910 | 883,300 | 895,817 | 913,034 | 944,251 | 821,572 | 800,787 | 770,420 | 3,752,061 | [1] | 3,337,030 | [1] | 3,024,881 | [1] | ||
| Total non-interest expenses | 825,209 | 724,907 | 752,857 | 797,928 | 781,658 | 670,818 | 652,805 | 632,611 | 3,100,901 | 2,737,892 | 2,490,519 | |||||
| Income before income tax expense | 234,701 | 158,393 | 142,960 | 115,106 | 162,593 | 150,754 | 147,982 | 137,809 | 651,160 | 599,138 | 534,362 | |||||
| Provision for income taxes | 46,232 | 37,866 | 35,073 | 28,517 | 31,925 | 40,632 | 38,225 | 38,370 | 147,688 | 149,152 | 140,394 | |||||
| Net income | 188,469 | 120,527 | 107,887 | 86,589 | 130,668 | 110,122 | 109,757 | 99,439 | 503,472 | 449,986 | 393,968 | |||||
| Net income applicable to non-controlling interests | (22) | 708 | 672 | 232 | 1,590 | |||||||||||
| Net income applicable to Stifel Financial Corp. | 130,690 | 109,414 | 109,085 | 99,207 | 503,472 | 448,396 | 393,968 | |||||||||
| Preferred dividends | 7,677 | 9,897 | 4,843 | 4,844 | 4,843 | 4,844 | 5,288 | 2,344 | 27,261 | 17,319 | 9,375 | |||||
| Net income available to common shareholders | $ 180,792 | $ 110,630 | $ 103,044 | $ 81,745 | $ 125,847 | $ 104,570 | $ 103,797 | $ 96,863 | $ 476,211 | $ 431,077 | $ 384,593 | |||||
| Earnings per common share: | ||||||||||||||||
| Basic | $ 1.70 | $ 1.04 | $ 0.97 | $ 0.76 | $ 1.19 | $ 0.98 | $ 0.95 | $ 0.90 | $ 4.49 | $ 3.99 | $ 3.57 | |||||
| Diluted | 1.55 | 0.97 | 0.92 | 0.71 | 1.08 | 0.89 | 0.88 | 0.82 | 4.16 | 3.66 | 3.15 | |||||
| Cash dividends declared per common share | $ 0.11 | $ 0.11 | $ 0.11 | $ 0.11 | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.45 | $ 0.40 | $ 0.32 | |||||
| Weighted-average number of common shares outstanding: | ||||||||||||||||
| Basic | 106,041 | 105,941 | 105,791 | 106,929 | 105,705 | 106,796 | 108,779 | 107,550 | 106,174 | 107,997 | 107,679 | |||||
| Diluted | 116,828 | 113,775 | 111,581 | 114,929 | 116,720 | 117,216 | 118,619 | 118,815 | 114,573 | 117,878 | 121,982 | |||||
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Total aggregate amount of all noninterest expense. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders. No definition available.
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Revenues from operations, excluding interest and dividend income. Includes revenues from the following sources: investment banking (underwriting and financial advisory), principal transactions (sales and trading, and investment gains and losses), commissions, asset management, and investment advisory and other services. No definition available.
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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