Supplemental Financial Statement Information - Inventories (Details) - USD ($) $ in Thousands	Jan. 31, 2019	Jul. 31, 2018
Supplemental Financial Statement Information [Line Items]
Propane gas and related products	$ 74,964	$ 71,180
Appliances, parts and supplies	14,820	12,514
Inventories	89,784	83,694
Ferrellgas, L.P. [Member]
Supplemental Financial Statement Information [Line Items]
Propane gas and related products	74,964	71,180
Appliances, parts and supplies	14,820	12,514
Inventories	$ 89,784	$ 83,694

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Carrying amount as of the balance sheet date of product derived from petroleum during the processing of oil or natural gas which is then used as a heat source or fuel.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount, after of valuation reserves and allowances, of inventory, classified as other, expected to be sold, or consumed within one year or operating cycle, if longer.

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