Summary Of Significant Accounting Policies (Policy)	6 Months Ended
Summary Of Significant Accounting Policies (Policy)	Jan. 31, 2014
Significant Accounting Policies [Line Items]
Accounting estimates	Accounting estimates: The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ from these estimates. Significant estimates impacting the condensed consolidated financial statements include accruals that have been established for contingent liabilities, pending claims and legal actions arising in the normal course of business, useful lives of property, plant and equipment, residual values of tanks, capitalization of customer tank installation costs, amortization methods of intangible assets, valuation methods used to value sales returns and allowances, valuation methods used to value intangibles and goodwill in business combinations, allowance for doubtful accounts, fair value of reporting units, fair values of derivative contracts, and stock and unit-based compensation calculations.
Cash equivalents	Ferrellgas considers cash equivalents to include all highly liquid debt instruments purchased with an original maturity of three months or less.
Ferrellgas, L.P. [Member]
Significant Accounting Policies [Line Items]
Accounting estimates	Accounting estimates: The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ from these estimates. Significant estimates impacting the condensed consolidated financial statements include accruals that have been established for contingent liabilities, pending claims and legal actions arising in the normal course of business, useful lives of property, plant and equipment, residual values of tanks, capitalization of customer tank installation costs, amortization methods of intangible assets, valuation methods used to value sales returns and allowances, valuation methods used to value intangibles and goodwill in business combinations, allowance for doubtful accounts, fair value of reporting units, fair value of derivative contracts, and stock and unit-based compensation calculations.
Cash equivalents	Ferrellgas, L.P. considers cash equivalents to include all highly liquid debt instruments purchased with an original maturity of three months or less.

Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.

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