Document and Entity Information - USD ($)	12 Months Ended
	May 31, 2024	Aug. 15, 2024	Nov. 30, 2023
Registrant CIK	0000096536
Fiscal Year End	--05-31
Document Type	10-K
Document Annual Report	true
Document Period End Date	May 31, 2024
Document Transition Report	false
Securities Act File Number	000-3498
Entity Registrant Name	TAYLOR DEVICES INC
Entity Incorporation, State or Country Code	NY
Entity Tax Identification Number	16-0797789
Entity Address, Address Line One	90 Taylor Drive
Entity Address, City or Town	North Tonawanda
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	14120
Entity Address, Address Description	Address of principal executive offices
Phone Fax Number Description	Registrant's telephone number, including area code
City Area Code	716
Local Phone Number	694-0800
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction	false
Entity Shell Company	false
Entity Public Float			$ 81,769,000
Entity Common Stock, Shares Outstanding		3,118,627
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Auditor Name	Lumsden & McCormick, LLP
Auditor Firm ID	130
Auditor Location	Buffalo, New York
Common Class A
Title of 12(b) Security	Common Stock, $.025 par value per share
Trading Symbol	TAYD
Security Exchange Name	NASDAQ
Series A Preferred Stock
Title of 12(b) Security	Preferred Stock Purchase Rights