Debt (Scheduled Annual Principal Payments On Long-term Debt) (USD $) In Thousands	Jul. 31, 2011
2012	$ 2,557
2013	2,096
2014	2,079
2015	2,028
2016	1,976
Thereafter	1,049,018
Total	1,059,754
Ferrellgas, L.P. And Subsidiaries [Member]
2012	2,557
2013	2,096
2014	2,079
2015	2,028
2016	1,976
Thereafter	867,018
Total	$ 877,754

Amount of the total principal payments made during the annual reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Name:	us-gaap_DebtInstrumentAnnualPrincipalPayment
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant