Investments - Schedule of Investments (Details) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Investments, All Other Investments [Abstract] | ||
| Investments at fair value | $ 272,057 | $ 305,473 |
| Investments accounted for under the equity method | 22,575 | 17,045 |
| Total investments | 294,632 | 322,518 |
| Less: Investments attributable to noncontrolling interests | (184,301) | (216,838) |
| Total investments attributable to Piper Sandler Companies | $ 110,331 | $ 105,680 |
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- Definition Investments Attributable to Noncontrolling Interest No definition available.
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- Definition Investments Attributable to Parent No definition available.
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- Definition Investments, excluding financial instruments owned. No definition available.
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- Definition Investments not included in financial instruments owned that are carried at fair value. Examples may include, investments in private companies and partnerships, registered mutual funds, warrants of public and private companies and private company debt. No definition available.
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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