Schedule I Parent Only Balance Sheets, Statements Of Earnings And Cash Flows (Cash Flows) (Details) (USD $)	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Cash flows from operating activities:
Net earnings (loss)	$ 33,715,000	$ 57,167,000	$ (10,896,000)
Reconciliation of net earnings (loss) to net cash provided by operating activities:
Other	(5,372,000)	(4,520,000)	(2,327,000)
Net cash provided by (used in) operating activities	125,669,000	210,120,000	124,403,000
Cash flows from investing activities:
Net cash used in investing activities	(210,075,000)	(68,116,000)	(53,948,000)
Cash flows from financing activities:
Distributions	(160,925,000)	(159,682,000)	(156,520,000)
Cash paid for financing costs	(11,508,000)	0	(3,607,000)
Proceeds from increase in long-term debt	750,351,000	58,356,000	49,697,000
Payments on long-term debt	(569,841,000)	(3,912,000)	(52,885,000)
Proceeds from equity offering, net of issuance costs	50,000,000	0	49,938,000
Proceeds from exercise of common unit options	605,000	864,000	891,000
Net cash provided by (used in) financing activities	86,376,000	(143,822,000)	(69,411,000)
Increase (decrease) in cash and cash equivalents	1,825,000	(1,965,000)	992,000
Cash and cash equivalents - beginning of year	6,464,000	8,429,000	7,437,000
Cash and cash equivalents - end of year	8,289,000	6,464,000	8,429,000
Parent Company [Member]
Cash flows from operating activities:
Net earnings (loss)	33,211,000	56,426,000	(10,952,000)
Reconciliation of net earnings (loss) to net cash provided by operating activities:
Other	426,000	383,000	398,000
Equity in (earnings) loss of Ferrellgas, L.P.	(49,403,000)	(72,634,000)	(5,533,000)
Net cash provided by (used in) operating activities	(15,766,000)	(15,825,000)	(16,087,000)
Cash flows from investing activities:
Distributions received from Ferrellgas, L.P.	176,623,000	175,380,000	172,218,000
Cash contributed to Ferrellgas, L.P.	(51,105,000)	(800,000)	(50,700,000)
Net cash used in investing activities	125,518,000	174,580,000	121,518,000
Cash flows from financing activities:
Distributions	(160,925,000)	(159,682,000)	(156,520,000)
Cash paid for financing costs	(94,000)	0	(135,000)
Proceeds from equity offering, net of issuance costs	50,000,000	0	49,938,000
Proceeds from exercise of common unit options	605,000	864,000	891,000
Other	511,000	9,000	511,000
Net cash provided by (used in) financing activities	(109,903,000)	(158,809,000)	(105,315,000)
Increase (decrease) in cash and cash equivalents	(151,000)	(54,000)	116,000
Cash and cash equivalents - beginning of year	157,000	211,000	95,000
Cash and cash equivalents - end of year	$ 6,000	$ 157,000	$ 211,000