Quarterly Distributions Of Available Cash (Details)	3 Months Ended				12 Months Ended
	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2010	Jul. 31, 2011
Maximum days after end of quarter to make distributions	45	45	45	45
Cash distributions available					100.00%
Ferrellgas, L.P. And Subsidiaries [Member]
Maximum days after end of quarter to make distributions	45	45	45	45
Cash distributions available					100.00%
Cash distributions to Ferrellgas Partners					99.00%
Cash distributions to general partner					1.00%