| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Document Information [Line Items] | |
| Document Type | DEF 14A |
| Amendment Flag | false |
| Entity Information [Line Items] | |
| Entity Registrant Name | Stifel Financial Corp. |
| Entity Central Index Key | 0000720672 |
| Pay vs Performance Disclosure - USD ($) | 12 Months Ended | ||
| Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | |
| Pay vs Performance Disclosure [Table] | |||
| Pay vs Performance [Table Text Block] | PAY VERSUS PERFORMANCE The S-K. 2020 (1) 2021 2022 Summary Compensation Total for PEO (2) $10,666,487 $13,555,232 $12,865,048 Compensation Actually Paid to PEO (3) $16,500,215 $24,502,824 $8,864,980 Average Summary Compensation Total for Non-PEO (2) $5,029,682 $7,212,128 $5,599,912 Average Compensation Actually Paid to Non-PEO (3) $7,119,305 $11,194,181 $4,201,855 Value of Fixed $100 Investment Based On: Total Shareholder Return (4) $126 $178 $152 Peer Group Total Shareholder Return (4, 5) $111 $157 $133 Net Income (6) $476,211,000 $789,271,000 $624,874,000 Non-GAAP Pre-Tax (7) $711,624,000 $1,132,395,000 $952,215,000 (1) During the first implementation year of Item 402(v) of SEC Regulation S-K, (2) See the Summary Compensation Table, page 47. (3) To calculate, according to applicable regulatory guidance, “Compensation Actually Paid”, the Company has (a) deducted equity award amounts reported in the Summary Compensation Table, (b) added the year-end (4) Total Shareholder Return is based on a $100 common equity investment at the close of December 31, 2019. (5) The Peer Group is as reported in the Company’s most recent Form 10-K, S-K (6) See page 46. (7) S ee page 24. I S-K Non-GAAP Non-GAAP Non-GAAP Pre-Tax | ||
| Company Selected Measure Name | Non-GAAP Pre-Tax Net Income | ||
| Named Executive Officers, Footnote [Text Block] | The NEOs described are Ronald J. Kruszewski, James M. Zemlyak, Victor J. Nesi, Thomas B. Michaud and James M. Marischen. | ||
| Peer Group Issuers, Footnote [Text Block] | The Peer Group is as reported in the Company’s most recent Form 10-K, S-K | ||
| PEO Total Compensation Amount | $ 12,865,048 | $ 13,555,232 | $ 10,666,487 |
| PEO Actually Paid Compensation Amount | $ 8,864,980 | 24,502,824 | 16,500,215 |
| Adjustment To PEO Compensation, Footnote [Text Block] | To calculate, according to applicable regulatory guidance, “Compensation Actually Paid”, the Company has (a) deducted equity award amounts reported in the Summary Compensation Table, (b) added the year-end | ||
| Non-PEO NEO Average Total Compensation Amount | $ 5,599,912 | 7,212,128 | 5,029,682 |
| Non-PEO NEO Average Compensation Actually Paid Amount | $ 4,201,855 | 11,194,181 | 7,119,305 |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | To calculate, according to applicable regulatory guidance, “Compensation Actually Paid”, the Company has (a) deducted equity award amounts reported in the Summary Compensation Table, (b) added the year-end | ||
| Tabular List [Table Text Block] | As required by Item 402(v) of SEC Regulation S-K, · Non-GAAP Pre-Tax · Non-GAAP · Non-GAAP · Non-GAAP · Total Shareholder Return · Non-GAAP Pre-Tax · Book Value Per Share | ||
| Total Shareholder Return Amount | $ 152 | 178 | 126 |
| Peer Group Total Shareholder Return Amount | 133 | 157 | 111 |
| Net Income (Loss) | $ 624,874,000 | $ 789,271,000 | $ 476,211,000 |
| Company Selected Measure Amount | 952,215,000 | 1,132,395,000 | 711,624,000 |
| Salary | $ 105,747 | ||
| Bonus | 2,118 | ||
| All Other Compensation | 3,000 | ||
| Total | $ 110,865 | ||
| Measure [Axis]: 1 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Non-GAAP Pre-Tax Net Income | ||
| Non-GAAP Measure Description [Text Block] | S ee page 24. I S-K Non-GAAP Non-GAAP Non-GAAP Pre-Tax | ||
| Measure [Axis]: 2 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Non-GAAP Net Revenue | ||
| Measure [Axis]: 3 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Non-GAAP Earnings Per Share | ||
| Measure [Axis]: 4 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Non-GAAP Return on Common Equity | ||
| Measure [Axis]: 5 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Total Shareholder Return | ||
| Measure [Axis]: 6 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Non-GAAP Pre-Tax Margin on Net Revenues | ||
| Measure [Axis]: 7 | |||
| Pay vs Performance Disclosure [Table] | |||
| Measure Name | Book Value Per Share | ||
| Ronald J. Kruszewski [Member] | |||
| Pay vs Performance Disclosure [Table] | |||
| Salary | $ 200,000 | ||
| Bonus | 4,000,000 | ||
| Stock Awards | 8,000,000 | ||
| All Other Compensation | 665,048 | ||
| Total | $ 12,865,048 | ||
