Subsequent Events Subsequent Events (Details) (USD $)	3 Months Ended		0 Months Ended	1 Months Ended		3 Months Ended		0 Months Ended	1 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Nov. 04, 2013 Fixed Rate, 6.75%, Due 2022 [Member] Senior Notes [Member] Subsequent Event [Member]	Dec. 31, 2013 Fixed Rate, 9.125%, Due 2017 [Member] Senior Notes [Member] Subsequent Event [Member]	Dec. 04, 2013 Fixed Rate, 9.125%, Due 2017 [Member] Senior Notes [Member] Subsequent Event [Member]	Oct. 31, 2013 Ferrellgas, L.P. [Member]	Oct. 31, 2012 Ferrellgas, L.P. [Member]	Nov. 04, 2013 Ferrellgas, L.P. [Member] Fixed Rate, 6.75%, Due 2022 [Member] Senior Notes [Member] Subsequent Event [Member]	Dec. 31, 2013 Ferrellgas, L.P. [Member] Fixed Rate, 9.125%, Due 2017 [Member] Senior Notes [Member] Subsequent Event [Member]	Dec. 04, 2013 Ferrellgas, L.P. [Member] Fixed Rate, 9.125%, Due 2017 [Member] Senior Notes [Member] Subsequent Event [Member]	Nov. 04, 2013 Ferrellgas Finance Corp. [Member] Fixed Rate, 6.75%, Due 2022 [Member] Senior Notes [Member] Subsequent Event [Member]	Oct. 31, 2013 Ferrellgas Finance Corp. [Member] Fixed Rate, 9.125%, Due 2017 [Member] Senior Notes [Member]	Dec. 04, 2013 Ferrellgas Finance Corp. [Member] Fixed Rate, 9.125%, Due 2017 [Member] Senior Notes [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Debt principal amount			$ 325,000,000.0					$ 325,000,000.0			$ 325,000,000.0	$ 300,000,000
Debt interest rate			6.75%		9.125%			6.75%		9.125%	6.75%	9.125%	9.125%
Debt maturity year			2022					2022			2022	2017	2017
Net proceeds from issuance of senior notes			319,300,000.0					319,300,000.0
Debt redemption principal amount					300,000,000.0					300,000,000.0			300,000,000.0
Maturity date				Oct. 01, 2017					Oct. 01, 2017
Make whole and consent payments				14,700,000					14,700,000
Interest payments	$ 15,842,000	$ 16,027,000		$ 3,300,000		$ 15,842,000	$ 16,027,000		$ 3,300,000