Document and Entity Information - shares	3 Months Ended
	Dec. 31, 2019	Feb. 14, 2020
Details
Registrant CIK	0001288750
Fiscal Year End	--09-30
Registrant Name	Timberline Resources Corp
SEC Form	10-Q
Period End date	Dec. 31, 2019
Trading Symbol	TLRS
Trading Exchange	NONE
Tax Identification Number (TIN)	82-0291227
Number of common stock shares outstanding		74,895,260
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Shell Company	false
Small Business	true
Emerging Growth Company	false
Entity File Number	001-34055
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	101 EAST LAKESIDE AVENUE
Entity Address, City or Town	COEUR D’ALENE
Entity Address, State or Province	ID
Entity Address, Postal Zip Code	83814
City Area Code	208
Local Phone Number	664-4859
Title of 12(b) Security	Common Stock, $0.001 par value
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Document Quarterly Report	true
Document Transition Report	false