Legal Proceedings	3 Months Ended
Mar. 31, 2025
Loss Contingency, Information about Litigation Matters [Abstract]
Legal Proceedings	NOTE 15 – Legal Proceedings The 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. The 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. The Company is contesting allegations in these claims, and it believes that there are meritorious defenses in each of these lawsuits, arbitrations, and regulatory investigations. In view of the number and diversity of claims against the Company, the number of jurisdictions in which litigation is pending, and the inherent difficulty of predicting the outcome of litigation and other claims, the Company generally cannot predict the eventual outcome of the pending matters, timing of the ultimate resolution of these matters, or eventual loss, fines, or penalties related to each pending matter. Matters frequently need to be more developed before a loss or range of loss can reasonably be estimated. As a matter develops, the Company, in conjunction with outside counsel, evaluates whether such matter presents a loss contingency that is probable and estimable, and, for the matters disclosed below, whether a loss in excess of any accrued liability is reasonably possible in future periods. Once the loss contingency is deemed to be both probable and estimable, the Company will establish an accrued liability. The Company continues to monitor the matter for further developments that could affect the amount of the accrued liability that has been previously established. As of March 31, 2025, the Company has estimated the upper end of the range of reasonably possible aggregate loss for such matters and for any other matters described below where management has been able to estimate a range of possible aggregate loss to be approximately $100.0 million in excess of the aggregate reserves for such matters. The accrued liability and estimated range of possible loss are based upon currently available information and subject to significant judgment, a variety of assumptions and known and unknown uncertainties. The matters underlying the accrued liability and estimated range of possible loss are unpredictable and may change from time to time, and actual losses may vary significantly from the current estimate and accrual. The estimated range of possible loss does not represent the Company’s maximum loss exposure. Based on currently available information, review with outside legal counsel, and consideration of accrued liabilities, management does not believe that loss contingencies arising from pending matters, including matters described below, will have a material adverse impact on the consolidated financial position or liquidity of the Company. 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 liability has not been established and for which the Company believes a loss is reasonably possible, as well as for matters where an accrual has been recorded but for which an exposure to loss in excess of the amount accrued is reasonably possible, based on currently available information, the Company believes that such losses will not have a material effect on its consolidated financial statements. CFTC Investigation of Communications Recordkeeping The Company has been contacted by the Commodity Futures Trading Commission (the “CFTC”) in connection with an investigation of the Company’s compliance with records preservation requirements for off-channel communications relating to the broker-dealer or investment adviser business activities of the Company using personally owned communications devices and/or messaging platforms that have not been approved by the Company. The CFTC has provided the Company with a settlement offer, which the Company declined to accept. The Company has established an accrual for potential losses that are probable and reasonably estimable, but at this time, based upon currently available information and review with outside counsel, the Company is not able to state with certainty that a settlement will be achieved or the ultimate resolution of the matter. FINRA Arbitration Matters On March 12, 2025, a three-person FINRA arbitration panel entered an award in a customer arbitration against the Company's brokerage subsidiary, Stifel, in the amount of $132.5 million, consisting of $26.5 million in compensatory damages, $79.5 million in punitive damages, and $26.5 million in attorneys’ fees and costs. The arbitration involved claims by four family members arising out of their investments, principally in structured notes, through a Stifel private wealth advisor. The Company believes the award is legally defective and excessive in amount, and it intends to file a petition seeking to have the award vacated, although the Company can provide no assurance that its efforts will be successful. This is the third adverse arbitration award against Stifel by former customers of the same private wealth advisor relating to substantially similar investment activities. Nineteen additional arbitration claims making similar allegations have been filed by other customers of the same advisor that have yet to be adjudicated. The Company’s estimate of losses that may be sought by the customers whose claims have been filed but not yet adjudicated do not take into consideration claims for enhanced damages or attorneys’ fees. While we continue to believe that Stifel has viable defenses to at least limit its liability in these additional cases, we can provide no assurance that we will be able to settle these claims or will be successful in defending them on the merits, or that these claims will not result in material liability to the Company. Cash Sweeps Litigation In March 2024, the Company and certain of its affiliates were named as defendants in multiple putative class actions pending in the federal district court for the Eastern District of Missouri. The class action claims have been brought on behalf of customers who had cash deposits or balances in the Stifel Insured Bank Deposit Program or the Stifel Insured Bank Deposit Program for Retirement Accounts, alleging various contractual, fiduciary and statutory claims based on the allegation that the Company failed to pay a reasonable rate of interest on its cash sweep products. Together, the complaints seek unspecified compensatory damages, equitable relief, and treble damages. The cases are at an early stage with a request for consolidation currently pending. While there can be no assurance that we will be successful, we intend to vigorously defend the claims.

Legal Proceedings

3 Months Ended

Mar. 31, 2025

Loss Contingency, Information about Litigation Matters [Abstract]

NOTE 15 – Legal Proceedings

The 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. The 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. The Company is contesting allegations in these claims, and it believes that there are meritorious defenses in each of these lawsuits, arbitrations, and regulatory investigations. In view of the number and diversity of claims against the Company, the number of jurisdictions in which litigation is pending, and the inherent difficulty of predicting the outcome of litigation and other claims, the Company generally cannot predict the eventual outcome of the pending matters, timing of the ultimate resolution of these matters, or eventual loss, fines, or penalties related to each pending matter. Matters frequently need to be more developed before a loss or range of loss can reasonably be estimated.

As a matter develops, the Company, in conjunction with outside counsel, evaluates whether such matter presents a loss contingency that is probable and estimable, and, for the matters disclosed below, whether a loss in excess of any accrued liability is reasonably possible in future periods. Once the loss contingency is deemed to be both probable and estimable, the Company will establish an accrued liability. The Company continues to monitor the matter for further developments that could affect the amount of the accrued liability that has been previously established. As of March 31, 2025, the Company has estimated the upper end of the range of reasonably possible aggregate loss for such matters and for any other matters described below where management has been able to estimate a range of possible aggregate loss to be approximately $100.0 million in excess of the aggregate reserves for such matters.

The accrued liability and estimated range of possible loss are based upon currently available information and subject to significant judgment, a variety of assumptions and known and unknown uncertainties. The matters underlying the accrued liability and estimated range of possible loss are unpredictable and may change from time to time, and actual losses may vary significantly from the current estimate and accrual. The estimated range of possible loss does not represent the Company’s maximum loss exposure.

Based on currently available information, review with outside legal counsel, and consideration of accrued liabilities, management does not believe that loss contingencies arising from pending matters, including matters described below, will have a material adverse impact on the consolidated financial position or liquidity of the Company. 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 liability has not been established and for which the Company believes a loss is reasonably possible, as well as for matters where an accrual has been recorded but for which an exposure to loss in excess of the amount accrued is reasonably possible, based on currently available information, the Company believes that such losses will not have a material effect on its consolidated financial statements.

CFTC Investigation of Communications Recordkeeping

The Company has been contacted by the Commodity Futures Trading Commission (the “CFTC”) in connection with an investigation of the Company’s compliance with records preservation requirements for off-channel communications relating to the broker-dealer or investment adviser business activities of the Company using personally owned communications devices and/or messaging platforms that have not been approved by the Company. The CFTC has provided the Company with a settlement offer, which the Company declined to accept. The Company has established an accrual for potential losses that are probable and reasonably estimable, but at this time, based upon currently available information and review with outside counsel, the Company is not able to state with certainty that a settlement will be achieved or the ultimate resolution of the matter.

FINRA Arbitration Matters

On March 12, 2025, a three-person FINRA arbitration panel entered an award in a customer arbitration against the Company's brokerage subsidiary, Stifel, in the amount of $132.5 million, consisting of $26.5 million in compensatory damages, $79.5 million in punitive damages, and $26.5 million in attorneys’ fees and costs. The arbitration involved claims by four family members arising out of their investments, principally in structured notes, through a Stifel private wealth advisor. The Company believes the award is legally defective and excessive in amount, and it intends to file a petition seeking to have the award vacated, although the Company can provide no assurance that its efforts will be successful.

This is the third adverse arbitration award against Stifel by former customers of the same private wealth advisor relating to substantially similar investment activities. Nineteen additional arbitration claims making similar allegations have been filed by other customers of the same advisor that have yet to be adjudicated. The Company’s estimate of losses that may be sought by the customers whose claims have been filed but not yet adjudicated do not take into consideration claims for enhanced damages or attorneys’ fees. While we continue to believe that Stifel has viable defenses to at least limit its liability in these additional cases, we can provide no assurance that we will be able to settle these claims or will be successful in defending them on the merits, or that these claims will not result in material liability to the Company.

Cash Sweeps Litigation

In March 2024, the Company and certain of its affiliates were named as defendants in multiple putative class actions pending in the federal district court for the Eastern District of Missouri. The class action claims have been brought on behalf of customers who had cash deposits or balances in the Stifel Insured Bank Deposit Program or the Stifel Insured Bank Deposit Program for Retirement Accounts, alleging various contractual, fiduciary and statutory claims based on the allegation that the Company failed to pay a reasonable rate of interest on its cash sweep products. Together, the complaints seek unspecified compensatory damages, equitable relief, and treble damages. The cases are at an early stage with a request for consolidation currently pending. While there can be no assurance that we will be successful, we intend to vigorously defend the claims.