Document And Entity Information - shares	3 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Document Information [Line Items]
Entity Central Index Key	0000842023
Entity Registrant Name	BIO-TECHNE Corp
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	0-17272
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-1427402
Entity Address, Address Line One	614 McKinley Place N.E.
Entity Address, City or Town	Minneapolis
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55413
City Area Code	612
Local Phone Number	379-8854
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	TECH
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		38,112,184