Equities - Schedule of Patronage Distributions (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
Aug. 31, 2024 |
|
| Estimated Patronage [Abstract] | |||
| Patronage distributed in cash | $ 150.0 | ||
| Patronage distributed in equity | 336.3 | ||
| Total patronage distributed | 486.3 | ||
| Patronage Paid [Abstract] | |||
| Patronage distributed in cash | 30.0 | $ 300.3 | $ 366.0 |
| Patronage distributed in equity | 197.6 | 360.2 | 877.3 |
| Total patronage distributed | $ 227.6 | $ 660.5 | $ 1,243.3 |