Document and Entity Information - shares	9 Months Ended
	Jun. 30, 2021	Aug. 13, 2021
Details
Registrant CIK	0000775057
Fiscal Year End	--09-30
Registrant Name	ALTEX INDUSTRIES INC
SEC Form	10-Q
Period End date	Jun. 30, 2021
Tax Identification Number (TIN)	84-0989164
Number of common stock shares outstanding		12,141,401
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Shell Company	false
Small Business	true
Emerging Growth Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-9030
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	700 Colorado
Entity Address, Address Line Two	Blvd #273
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80206
City Area Code	303
Local Phone Number	265-9312
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3