| Document and Entity Information | Jan. 01, 2025 |
| Cover [Abstract] | |
| Entity Registrant Name | JONES FINANCIAL COMPANIES LLLP |
| Amendment Flag | true |
| Amendment Description | The Jones Financial Companies, L.L.L.P. (the "Partnership") is filing this Form 8-K/A as an amendment (the “Amendment”) to its Current Report on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) on January 7, 2025 (the “Original Form 8-K”), solely to refile a corrected courtesy copy of the Original Form 8-K. After filing the Original Form 8-K, the Partnership determined that the courtesy copy of a Current Report on Form 8-K of the Partnership filed on January 5, 2024 was inadvertently provided as the courtesy copy of the Original Form 8-K. A correct version of the courtesy copy is filed herewith and supersedes and replaces in its entirety the courtesy copy filed with the Original Form 8-K. Except as stated in this Explanatory Note, this Amendment does not otherwise change or update the disclosure set forth in the Original Form 8-K. |
| Entity Central Index Key | 0000815917 |
| Document Type | 8-K/A |
| Document Period End Date | Jan. 01, 2025 |
| Entity Incorporation State Country Code | MO |
| Entity File Number | 0-16633 |
| Entity Tax Identification Number | 43-1450818 |
| Entity Address, Address Line One | 12555 Manchester Road |
| Entity Address, City or Town | Des Peres |
| Entity Address, State or Province | MO |
| Entity Address, Postal Zip Code | 63131 |
| City Area Code | 314 |
| Local Phone Number | 515-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
