| Cover - shares | 3 Months Ended | |
| Nov. 30, 2021 | Dec. 29, 2021 | |
| Cover [Abstract] | ||
| Document Type | 10-Q/A | |
| Amendment Flag | true | |
| Amendment Description | This Amendment No. 1 to the Quarterly Report on Form 10-Q (this “Amended 10-Q”) of Taylor Devices, Inc. (the “Company”) amends the Company’s Quarterly Report on Form 10-Q for the three-month period ended November 30, 2021 (the “Original 10-Q”), which was filed with the Securities and Exchange Commission (the “SEC”) on December 29, 2021. The Company is filing this Amended 10-Q to correct the inadvertent omission of certifications by the Company’s principal executive officer and principal financial officer. | |
| Document Quarterly Report | true | |
| Document Transition Report | false | |
| Document Period End Date | Nov. 30, 2021 | |
| Document Fiscal Period Focus | Q2 | |
| Document Fiscal Year Focus | 2022 | |
| Current Fiscal Year End Date | --05-31 | |
| Entity File Number | 0-3498 | |
| Entity Registrant Name | TAYLOR DEVICES INC | |
| Entity Central Index Key | 0000096536 | |
| Entity Tax Identification Number | 16-0797789 | |
| Entity Incorporation, State or Country Code | NY | |
| 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 | |
| City Area Code | 716 | |
| Local Phone Number | 694-0800 | |
| 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 | |
| Entity Shell Company | false | |
| Entity Common Stock, Shares Outstanding | 3,497,144 |
