Document and Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2019	Dec. 26, 2019	Mar. 31, 2019
Details
Registrant CIK	0000775057
Fiscal Year End	--09-30
Registrant Name	ALTEX INDUSTRIES INC
SEC Form	10-K
Period End date	Sep. 30, 2019
Tax Identification Number (TIN)	84-0989164
Number of common stock shares outstanding		12,185,409
Public Float			$ 402,000
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Voluntary filer	No
Well-known Seasoned Issuer	No
Shell Company	false
Small Business	true
Emerging Growth Company	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	1-9030
Entity Incorporation, State or Country Code	DE
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
Entity Address, Address Description	Address of principal executive offices
City Area Code	303
Local Phone Number	265-9312
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY