Fair Value Measurement (Tables)

12 Months Ended

Jul. 31, 2019

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets and Liabilities Fair Value Hierarchy

	Asset (Liability)
	Quoted Prices in Active
	Markets for Identical		Significant Other
	Assets and Liabilities		Observable Inputs		Unobservable Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
July 31, 2019:
Assets:
Derivative financial instruments:
Commodity derivatives	$	—	$	1,259	$	—	$	1,259
Liabilities:
Derivative financial instruments:
Commodity derivatives	$	—	$	(16,015)	$	—	$	(16,015)
July 31, 2018:
Assets:
Derivative financial instruments:
Commodity derivatives	$	—	$	22,470	$	—	$	22,470
Liabilities:
Derivative financial instruments:
Commodity derivatives	$	—	$	(1,910)	$	—	$	(1,910)

Ferrellgas, L.P. [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Assets and Liabilities Fair Value Hierarchy

	Asset (Liability)
	Quoted Prices in Active
	Markets for Identical		Significant Other
	Assets and Liabilities		Observable Inputs		Unobservable Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
July 31, 2019:
Assets:
Derivative financial instruments:
Commodity derivatives	$	—	$	1,259	$	—	$	1,259
Liabilities:
Derivative financial instruments:
Commodity derivatives	$	—	$	(16,015)	$	—	$	(16,015)
July 31, 2018:
Assets:
Derivative financial instruments:
Commodity derivatives	$	—	$	22,470	$	—	$	22,470
Liabilities:
Derivative financial instruments:
Commodity derivatives	$	—	$	(1,910)	$	—	$	(1,910)