Document And Entity Information - shares
 6 Months Ended
Jan. 31, 2016
Mar. 01, 2016
Entity Registrant Name FERRELLGAS PARTNERS L P  
Entity Central Index Key 0000922358  
Current Fiscal Year End Date --07-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Jan. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   98,002,665
Trading Symbol fgp  
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Ferrellgas Partners Finance Corp. [Member]    
Entity Registrant Name FERRELLGAS PARTNERS FINANCE CORP  
Entity Central Index Key 0001012493  
Current Fiscal Year End Date --07-31  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date Jan. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   1,000
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Ferrellgas, L.P. [Member]    
Entity Registrant Name FERRELLGAS L P  
Entity Central Index Key 0000922359  
Current Fiscal Year End Date --07-31  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date Jan. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Ferrellgas Finance Corp. [Member]    
Entity Registrant Name FERRELLGAS FINANCE CORP  
Entity Central Index Key 0000922360  
Current Fiscal Year End Date --07-31  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date Jan. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   1,000
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes