v3.25.2
Cover
Jun. 17, 2025
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jun. 17, 2025
Entity Registrant Name Prospect Capital Corporation
Securities Act File Number 814-00659
Entity Address, Address Line One 10 East 40th Street
Entity Tax Identification Number 43-2048643
Entity Address, Address Line Two 42nd Floor
Entity Address, City or Town New York
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10016
Local Phone Number 448-0702
City Area Code (212)
Pre-commencement Issuer Tender Offer false
Pre-commencement Tender Offer false
Soliciting Material false
Written Communications false
Entity Emerging Growth Company false
Entity Incorporation, State or Country Code MD
Entity Central Index Key 0001287032
Amendment Flag false
Common Stock  
Document Information [Line Items]  
Security Exchange Name NASDAQ
Trading Symbol PSEC
Title of 12(b) Security Common Stock, $0.001 par value
5.35% Series A Fixed Rate Cumulative Perpetual Preferred Stock  
Document Information [Line Items]  
Security Exchange Name NYSE
Trading Symbol PSEC PRA
Title of 12(b) Security 5.35% Series A Fixed Rate Cumulative Perpetual Preferred Stock, par value $0.001