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Employee Benefits (Details)
$ in Thousands
12 Months Ended
Jul. 31, 2022
USD ($)
employee
Jul. 31, 2021
USD ($)
Jul. 31, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of employees | employee 0    
Non-cash employee stock ownership plan compensation charge $ 3,170 $ 3,215 $ 2,871
Contributions to defined contribution plan 5,400 4,000 4,800
Defined benefit plan adjustments to other comprehensive income and other liabilities 0 0 100
Ferrellgas, L.P. [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Non-cash employee stock ownership plan compensation charge $ 3,170 $ 3,215 $ 2,871