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Document and Entity Information - shares
6 Months Ended
Mar. 31, 2019
May 10, 2019
Details    
Registrant Name ALTEX INDUSTRIES INC  
Registrant CIK 0000775057  
SEC Form 10-Q  
Period End date Mar. 31, 2019  
Fiscal Year End --09-30  
Trading Symbol altx  
Tax Identification Number (TIN) 840989164  
Number of common stock shares outstanding   12,262,376
Filer Category Non-accelerated Filer  
Current with reporting Yes  
Small Business true  
Emerging Growth Company false  
Ex Transition Period false  
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Entity Incorporation, State Country Name Delaware  
Entity Address, Address Line One PO Box 1057  
Entity Address, City or Town Breckenridge  
Entity Address, State or Province CO  
Entity Address, Postal Zip Code 80424-1057  
City Area Code (303)  
Local Phone Number 265-9312