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v3.25.2

Revenue from Contracts with Clients - Schedule of Revenue from Contracts with Clients (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | $ 851.2 | $ 571.8 | $ 2,334.7 | $ 1,708.4
Principal gains, net | 334.0 | 305.6 | 943.4 | 881.2
Interest income | 442.7 | 379.6 | 1,209.9 | 995.7
Total revenues | 34,828.8 | 27,069.7 | 99,654.8 | 68,748.8
Total operating revenues | 1,024.3 | 913.7 | 2,924.6 | 2,516.1
United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 1,930.5 | 1,400.2 | 5,594.9 | 4,411.4
Total operating revenues | 733.1 | 657.9 | 2,097.1 | 1,815.9
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 900.2 | 618.9 | 2,446.2 | 1,837.5
Total operating revenues | 175.4 | 162.5 | 484.3 | 459.2
South America |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 106.5 | 118.5 | 411.5 | 351.5
Total operating revenues | 46.2 | 43.5 | 131.2 | 109.9
Middle East and Asia |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 31,877.0 | 24,923.7 | 91,191.9 | 62,124.4
Total operating revenues | 55.0 | 41.4 | 175.9 | 107.1
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenues | 14.6 | 8.4 | 10.3 | 24.0
Total operating revenues | 14.6 | 8.4 | 36.1 | 24.0
Point-in-time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 808.4 | 528.3 | 2,207.0 | 1,587.7
Time elapsed |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 42.8 | 43.5 | 127.7 | 120.7
Exchange-traded futures and options |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 72.8 | 59.4 | 207.0 | 166.6
OTC derivative brokerage |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 2.9 | 2.8 | 8.2 | 8.6
Equities and fixed income |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 16.5 | 17.8 | 46.6 | 48.8
Mutual funds |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 0.7 | 0.8 | 2.3 | 2.4
Insurance and annuity products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 2.8 | 2.4 | 9.3 | 8.1
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 0.3 | 0.0 | 1.1 | 0.1
Total sales-based commission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 96.0 | 83.2 | 274.5 | 234.6
Mutual funds |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 3.3 | 3.2 | 10.2 | 9.4
Insurance and annuity products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 3.9 | 3.9 | 11.9 | 11.3
Total trailing commission |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 7.2 | 7.1 | 22.1 | 20.7
Clearing fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 49.1 | 47.2 | 141.2 | 135.9
Trade conversion fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 2.5 | 3.3 | 8.1 | 10.8
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 11.2 | 2.2 | 33.7 | 6.9
Total commission and clearing fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 166.0 | 143.0 | 479.6 | 408.9
Total revenues | 166.0 | 143.0 | 479.6 | 408.9
Underwriting fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 0.3 | 0.1 | 0.8 | 0.2
Asset management fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 17.1 | 13.3 | 46.3 | 37.0
Advisory and consulting fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 7.8 | 12.4 | 25.6 | 29.6
Sweep program fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 10.7 | 10.7 | 33.7 | 33.4
Client account fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 7.4 | 4.6 | 20.1 | 13.1
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 2.9 | 4.2 | 11.8 | 10.7
Total consulting, management, and account fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 46.2 | 45.3 | 138.3 | 124.0
Total revenues | 46.2 | 45.3 | 138.3 | 124.0
Precious metals sales under ASC Topic 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contract with customer | 639.0 | 383.5 | 1,716.8 | 1,175.5
Physical precious metals under ASC Topic 815 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales of physical commodities | 32,102.3 | 25,030.2 | 91,857.9 | 62,259.7
Physical agricultural and energy products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Sales of physical commodities | $ 1,098.6 | $ 782.5 | $ 3,308.9 | $ 2,903.8
Revenue from Contract with Customer Benchmark | Customer Concentration Risk | Clients |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues from contracts with clients as a percentage of total revenues | 2.40% | 2.10% | 2.30% | 2.50%

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