Debt - Components Of Long-Term Debt (Details) - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021	Mar. 30, 2021
Schedule of Capitalization, Long-term Debt [Line Items]
Total long-term debt	$ 1,479,539	$ 1,478,882
Unamortized debt issuance and other costs	(27,731)	(32,322)
Less: current portion of long-term debt	1,792	1,670
Long-term debt	1,450,016	1,444,890
Senior Notes 5.375 Percent Due 2026 [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Unsecured senior notes	$ 650,000	$ 650,000
Interest rate, as a percent	5.375%	5.375%
Senior Notes 5.875 Percent Due 2029 [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Unsecured senior notes	$ 825,000	$ 825,000
Interest rate, as a percent	5.875%	5.875%
Notes payable Due 2022 to 2029
Schedule of Capitalization, Long-term Debt [Line Items]
Notes payable	$ 4,539	$ 3,882
Unamortized discount	$ 465	$ 573
Debt, Weighted Average Interest Rate	8.90%	8.80%
Ferrellgas, L.P. [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Less: current portion of long-term debt	$ 1,792	$ 1,670
Long-term debt	$ 1,450,016	$ 1,444,890
Ferrellgas, L.P. [Member] | Senior Notes 5.375 Percent Due 2026 [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Interest rate, as a percent			5.375%
Ferrellgas, L.P. [Member] | Senior Notes 5.875 Percent Due 2029 [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Interest rate, as a percent			5.875%