Introduction and Basis of Presentation (Policies)	9 Months Ended
Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Partnership's Business and Basis of Accounting	The accompanying Consolidated Financial Statements include the accounts of The Jones Financial Companies, L.L.L.P. and all wholly-owned subsidiaries (collectively, the “Partnership” or "JFC"). The financial position of the Partnership’s subsidiaries in Canada as of August 31, 2022 and November 30, 2021 are included in the Partnership’s Consolidated Statements of Financial Condition and the results for the three- and nine-month periods ended August 31, 2022 and 2021 are included in the Partnership’s Consolidated Statements of Income, Consolidated Statements of Changes in Partnership Capital Subject to Mandatory Redemption, and Consolidated Statements of Cash Flows because of the timing of the Partnership’s financial reporting process. The Partnership’s principal operating subsidiary, Edward D. Jones & Co., L.P. (“Edward Jones”), is a registered broker-dealer and investment adviser in the United States (“U.S.”), and one of Edward Jones’ subsidiaries, Edward Jones (an Ontario limited partnership) ("EJ Canada"), is a registered broker-dealer in Canada. Through these entities, the Partnership primarily serves individual investors in the U.S. and Canada. Edward Jones is a retail brokerage business and primarily derives revenues from fees for providing investment advisory and other account services to its clients, fees for assets held by clients and commissions for the distribution of mutual fund shares and insurance products and the purchase or sale of securities. The Partnership conducts business throughout the U.S. and Canada with its clients, various brokers, dealers, clearing organizations, depositories and banks. For financial information related to the Partnership’s two operating segments for the three- and nine-month periods ended September 30, 2022 and September 24, 2021, see Note 9 to the Consolidated Financial Statements. Trust services are offered to Edward Jones’ U.S. clients through Edward Jones Trust Company (“Trust Co.”), a wholly-owned subsidiary of the Partnership. Olive Street Investment Advisers, LLC ("Olive Street"), a wholly-owned subsidiary of the Partnership, provides investment advisory services to the eleven sub-advised mutual funds comprising the Bridge Builder® Trust. Passport Research, Ltd. ("Passport"), a wholly-owned subsidiary of Edward Jones, currently provides investment advisory services to the sub-advised Edward Jones Money Market Fund (the "Money Market Fund"). Effective November 2, 2022, the Money Market Fund's Board of Trustees approved the transition of its investment advisory services from Passport to Olive Street, which has no impact on the Consolidated Financial Statements. The Partnership plans to dissolve Passport following the completion of this transition. The Consolidated Financial Statements have been prepared on the accrual basis of accounting in conformity with U.S. generally accepted accounting principles, which require the use of certain estimates by management in determining the Partnership’s assets, liabilities, revenues and expenses. Actual results could differ from these estimates. Certain prior period balances have been adjusted to align to current year presentation. The interim financial information included herein is unaudited. However, in the opinion of management, such information includes all adjustments, consisting primarily of normal recurring accruals, which are necessary for a fair statement of the results of interim operations. The Partnership evaluated subsequent events for recognition or disclosure through November 14, 2022, which was the date these Consolidated Financial Statements were available to be issued, and identified no matters requiring disclosure other than as disclosed above, in Note 5 and Note 8. There have been no material changes to the Partnership’s significant accounting policies or disclosures of recently issued accounting standards as described in Part II, Item 8 – Financial Statements and Supplementary Data – Note 1 of the Partnership's Annual Report on Form 10-K for the year ended December 31, 2021 (the "Annual Report"). The results of operations for the three- and nine- month periods ended September 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022. These unaudited Consolidated Financial Statements should be read in conjunction with Management's Discussion and Analysis of Financial Condition and Results of Operations and the Consolidated Financial Statements and notes thereto included in the Annual Report.
Contingencies (ASC No.450)	The Partnership accrues for potential losses for those matters where it is probable that the Partnership will incur a potential loss to the extent that the amount of such potential loss can be reasonably estimated, in accordance with Financial Accounting Standards Board Accounting Standards Codification No. 450, Contingencies. This liability represents the Partnership’s estimate of the probable loss as of September 30, 2022, after considering, among other factors, the progress of each case, the Partnership's experience with other legal and regulatory matters and discussion with legal counsel, and is believed to be sufficient. The aggregate accrued liability is recorded within the accounts payable, accrued expenses and other line of the Consolidated Statements of Financial Condition and may be adjusted from time to time to reflect any relevant developments

Introduction and Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The Partnership's Business and Basis of Accounting

The accompanying Consolidated Financial Statements include the accounts of The Jones Financial Companies, L.L.L.P. and all wholly-owned subsidiaries (collectively, the “Partnership” or "JFC"). The financial position of the Partnership’s subsidiaries in Canada as of August 31, 2022 and November 30, 2021 are included in the Partnership’s Consolidated Statements of Financial Condition and the results for the three- and nine-month periods ended August 31, 2022 and 2021 are included in the Partnership’s Consolidated Statements of Income, Consolidated Statements of Changes in Partnership Capital Subject to Mandatory Redemption, and Consolidated Statements of Cash Flows because of the timing of the Partnership’s financial reporting process.

The Partnership’s principal operating subsidiary, Edward D. Jones & Co., L.P. (“Edward Jones”), is a registered broker-dealer and investment adviser in the United States (“U.S.”), and one of Edward Jones’ subsidiaries, Edward Jones (an Ontario limited partnership) ("EJ Canada"), is a registered broker-dealer in Canada. Through these entities, the Partnership primarily serves individual investors in the U.S. and Canada. Edward Jones is a retail brokerage business and primarily derives revenues from fees for providing investment advisory and other account services to its clients, fees for assets held by clients and commissions for the distribution of mutual fund shares and insurance products and the purchase or sale of securities. The Partnership conducts business throughout the U.S. and Canada with its clients, various brokers, dealers, clearing organizations, depositories and banks. For financial information related to the Partnership’s two operating segments for the three- and nine-month periods ended September 30, 2022 and September 24, 2021, see Note 9 to the Consolidated Financial Statements. Trust services are offered to Edward Jones’ U.S. clients through Edward Jones Trust Company (“Trust Co.”), a wholly-owned subsidiary of the Partnership. Olive Street Investment Advisers, LLC ("Olive Street"), a wholly-owned subsidiary of the Partnership, provides investment advisory services to the eleven sub-advised mutual funds comprising the Bridge Builder® Trust. Passport Research, Ltd. ("Passport"), a wholly-owned subsidiary of Edward Jones, currently provides investment advisory services to the sub-advised Edward Jones Money Market Fund (the "Money Market Fund"). Effective November 2, 2022, the Money Market Fund's Board of Trustees approved the transition of its investment advisory services from Passport to Olive Street, which has no impact on the Consolidated Financial Statements. The Partnership plans to dissolve Passport following the completion of this transition.

The Consolidated Financial Statements have been prepared on the accrual basis of accounting in conformity with U.S. generally accepted accounting principles, which require the use of certain estimates by management in determining the Partnership’s assets, liabilities, revenues and expenses. Actual results could differ from these estimates. Certain prior period balances have been adjusted to align to current year presentation.

The interim financial information included herein is unaudited. However, in the opinion of management, such information includes all adjustments, consisting primarily of normal recurring accruals, which are necessary for a fair statement of the results of interim operations. The Partnership evaluated subsequent events for recognition or disclosure through November 14, 2022, which was the date these Consolidated Financial Statements were available to be issued, and identified no matters requiring disclosure other than as disclosed above, in Note 5 and Note 8.

There have been no material changes to the Partnership’s significant accounting policies or disclosures of recently issued accounting standards as described in Part II, Item 8 – Financial Statements and Supplementary Data – Note 1 of the Partnership's Annual Report on Form 10-K for the year ended December 31, 2021 (the "Annual Report"). The results of operations for the three- and nine- month periods ended September 30, 2022 are not necessarily indicative of the results to be expected for the year ending December 31, 2022. These unaudited Consolidated Financial Statements should be read in conjunction with Management's Discussion and Analysis of Financial Condition and Results of Operations and the Consolidated Financial Statements and notes thereto included in the Annual Report.

Contingencies (ASC No.450)

The Partnership accrues for potential losses for those matters where it is probable that the Partnership will incur a potential loss to the extent that the amount of such potential loss can be reasonably estimated, in accordance with Financial Accounting Standards Board Accounting Standards Codification No. 450, Contingencies. This liability represents the Partnership’s estimate of the probable loss as of September 30, 2022, after considering, among other factors, the progress of each case, the Partnership's experience with other legal and regulatory matters and discussion with legal counsel, and is believed to be sufficient. The aggregate accrued liability is recorded within the accounts payable, accrued expenses and other line of the Consolidated Statements of Financial Condition and may be adjusted from time to time to reflect any relevant developments