Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
Aug. 31, 2024 |
|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Maximum guarantees allowed by bank covenants | $ 1,100.0 | ||
| Outstanding guarantees allowed by bank covenants | 110.4 | ||
| CHS Capital additional available credit to customers | 1,000.0 | ||
| Total payments under unconditional purchase obligation arrangements | $ 107.2 | $ 92.0 | $ 84.6 |