Income taxes (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2024 |
|
| Income taxes | |||
| Deferred income tax expense (benefit) | $ (4,000) | $ 3,000 | $ (3,000) |
| Deferred tax assets (included in Other assets, net) | 11,000 | ||
| Ferrellgas Partners Finance Corp | |||
| Income taxes | |||
| Deferred tax assets, operating loss carryforwards | 8,570,000 | ||
| Net operating loss carryforward | 40,810,000 | ||
| Deferred income tax expense (benefit) | 0 | 0 | |
| Deferred tax assets (included in Other assets, net) | 0 | 0 | |
| Ferrellgas Finance Corp | |||
| Income taxes | |||
| Deferred tax assets, operating loss carryforwards | 22,091,000 | ||
| Net operating loss carryforward | 105,196,000 | ||
| Valuation allowance provided for deferred tax asset | 22,091,000 | ||
| Deferred income tax expense (benefit) | 0 | 0 | |
| Deferred tax assets (included in Other assets, net) | $ 0 | $ 0 | |