Cover Page
| Cover Page | Aug. 07, 2024 |
| Entity Listings [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 07, 2024 |
| Entity Registrant Name | STEEL PARTNERS HOLDINGS L.P. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35493 |
| Entity Tax Identification Number | 13-3727655 |
| Entity Address, Address Line One | 590 Madison Avenue, 32nd Floor |
| Entity Address, City or Town | New York |
| Entity Address, Postal Zip Code | 10022 |
| City Area Code | 212 |
| Local Phone Number | 520-2300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001452857 |
| Amendment Flag | false |
| Entity Address, State or Province | NY |
| Common Units | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Common Units, no par value |
| Trading Symbol | SPLP |
| Security Exchange Name | NYSE |
| Series A Preferred Units | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 6.0% Series A Preferred Units |
| Trading Symbol | SPLP-PRA |
| Security Exchange Name | NYSE |