XML 20 R1.htm IDEA: XBRL DOCUMENT v3.25.4
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Feb. 19, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Entity File Number 001-31720    
Entity Registrant Name PIPER SANDLER COMPANIES    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 30-0168701    
Entity Address, Address Line One 350 North 5th Street, Suite 1000    
Entity Address, City or Town Minneapolis    
Entity Address, State or Province MN    
Entity Address, Postal Zip Code 55401-5711    
City Area Code (612)    
Local Phone Number 303-6000    
Title of Each Class Common Stock, par value $0.01 per share    
Trading Symbol PIPR    
Security Exchange Name NYSE    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   17,822,435  
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001230245    
Current Fiscal Year End Date --12-31    
Entity Public Float     $ 4,780
Entity Common Stock, Shares outstanding held by non-affiliates     17,203,212
Document Financial Statement Error Correction [Flag] false    
ICFR Auditor Attestation Flag true    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes    
Auditor Name Ernst & Young LLP    
Auditor Location Minneapolis, Minnesota    
Auditor Firm ID 42