Document and Entity Information - shares	9 Months Ended
	Jul. 31, 2020	Sep. 14, 2020
Document Type	10-Q
Document Period End Date	Jul. 31, 2020
Entity Registrant Name	HERON LAKE BIOENERGY, LLC
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001286964
Current Fiscal Year End Date	--10-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q3
Amendment Flag	false
Class A units
Common stock, shares outstanding		62,932,107
Class B units
Common stock, shares outstanding		15,000,000