Subsequent Events Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended				0 Months Ended
	Sep. 12, 2014 Subsequent Event [Member]	Sep. 01, 2014 Subsequent Event [Member]	Jul. 31, 2014 Midstream Operations [Member]	Sep. 01, 2014 Midstream Operations [Member] Subsequent Event [Member]	Sep. 12, 2014 Ferrellgas, L.P. [Member] Subsequent Event [Member]	Sep. 01, 2014 Ferrellgas, L.P. [Member] Subsequent Event [Member]	Jul. 31, 2014 Ferrellgas, L.P. [Member] Midstream Operations [Member]	Sep. 01, 2014 Ferrellgas, L.P. [Member] Midstream Operations [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Number of salt water wells			8	2			8	2
Stock Issued During Period, Shares, New Issues	1.5				1.5
Proceeds from equity offering, net of issuance costs		$ 42.0				$ 42.0