Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Sep. 30, 2018
Dec. 29, 2018
Mar. 31, 2018
Proceeds to be received under farm out agreement      
Entity Registrant Name GULFSLOPE ENERGY, INC.    
Entity Central Index Key 0001341726    
Document Type 10-K    
Trading Symbol GSPE    
Document Period End Date Sep. 30, 2018    
Amendment Flag false    
Current Fiscal Year End Date --09-30    
Entity a Well-known Seasoned Issuer No    
Entity a Voluntary Filer No    
Entity Current Reporting Status Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Shell Company false    
Entity Ex Transition Period false    
Entity Public Float     $ 26,889,251
Shares held by non-affiliates     440,807,388
Entity share price     $ .061
Entity Common Stock, Shares Outstanding   832,013,272  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2018