Net Capital Requirements and Other Regulatory Matters	6 Months Ended
Jun. 30, 2026
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]
Net Capital Requirements and Other Regulatory Matters	NET CAPITAL REQUIREMENTS AND OTHER REGULATORY MATTERS Piper Sandler is registered as a securities broker dealer with the SEC and is a member of various SROs and securities exchanges. FINRA serves as Piper Sandler's primary SRO. Piper Sandler is subject to the uniform net capital rule of the SEC and the net capital rule of FINRA. Piper Sandler has elected to use the alternative method permitted by the SEC rule which requires that it maintain minimum net capital of $1.0 million. Advances to affiliates, repayment of subordinated debt, dividend payments and other equity withdrawals by Piper Sandler are subject to certain approvals, notifications and other provisions of SEC and FINRA rules. At June 30, 2026, net capital calculated under the SEC rule was $329.6 million, and exceeded the minimum net capital required under the SEC rule by $328.6 million. The Company's unsecured revolving credit facility and secured revolving credit facility include covenants requiring Piper Sandler to maintain a minimum regulatory net capital of $120 million. The Company's fully disclosed clearing agreement with Pershing includes a covenant requiring Piper Sandler to maintain excess net capital of $120 million. Piper Sandler Ltd., a broker dealer subsidiary registered in the U.K., is subject to the capital requirements of the Prudential Regulation Authority and the Financial Conduct Authority. As of June 30, 2026, Piper Sandler Ltd. was in compliance with the capital requirements of the Prudential Regulation Authority and the Financial Conduct Authority. Piper Sandler Europe SAS, a European subsidiary, is authorized by the Autorité de contrôle prudentiel et de résolution and regulated by the Autorité des marchés financiers. Aviditi Capital Advisors Europe GmbH, a European subsidiary, is authorized and regulated by the Federal Financial Supervisory Authority ("BaFin") as a tied agent of AHP Capital Management GmbH, a third-party financial institution. Piper Sandler MENA Ltd, an Abu Dhabi Global Market ("ADGM") subsidiary, is authorized and regulated by the ADGM Financial Services Regulatory Authority. As of June 30, 2026, Piper Sandler MENA Ltd was in compliance with the capital requirements of the ADGM Financial Services Regulatory Authority.

Piper Sandler is registered as a securities broker dealer with the SEC and is a member of various SROs and securities exchanges. FINRA serves as Piper Sandler's primary SRO. Piper Sandler is subject to the uniform net capital rule of the SEC and the net capital rule of FINRA. Piper Sandler has elected to use the alternative method permitted by the SEC rule which requires that it maintain minimum net capital of $1.0 million. Advances to affiliates, repayment of subordinated debt, dividend payments and other equity withdrawals by Piper Sandler are subject to certain approvals, notifications and other provisions of SEC and FINRA rules.

At June 30, 2026, net capital calculated under the SEC rule was $329.6 million, and exceeded the minimum net capital required under the SEC rule by $328.6 million.

The Company's unsecured revolving credit facility and secured revolving credit facility include covenants requiring Piper Sandler to maintain a minimum regulatory net capital of $120 million. The Company's fully disclosed clearing agreement with Pershing includes a covenant requiring Piper Sandler to maintain excess net capital of $120 million.

Piper Sandler Ltd., a broker dealer subsidiary registered in the U.K., is subject to the capital requirements of the Prudential Regulation Authority and the Financial Conduct Authority. As of June 30, 2026, Piper Sandler Ltd. was in compliance with the capital requirements of the Prudential Regulation Authority and the Financial Conduct Authority.

Piper Sandler Europe SAS, a European subsidiary, is authorized by the Autorité de contrôle prudentiel et de résolution and regulated by the Autorité des marchés financiers.

Aviditi Capital Advisors Europe GmbH, a European subsidiary, is authorized and regulated by the Federal Financial Supervisory Authority ("BaFin") as a tied agent of AHP Capital Management GmbH, a third-party financial institution.