| Cover | Sep. 27, 2021 |
| Affiliate, Collateralized Security [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 27, 2021 |
| Entity File Number | 001-38306 |
| Entity Registrant Name | Ensysce Biosciences, Inc. |
| Entity Central Index Key | 0001716947 |
| Entity Tax Identification Number | 82-2755287 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 7946 Ivanhoe Avenue |
| Entity Address, Address Line Two | Suite 201 |
| Entity Address, City or Town | La Jolla |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92037 |
| City Area Code | (858) |
| Local Phone Number | 263-4196 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common Stock, par value $0.0001 | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.0001 |
| Trading Symbol | ENSC |
| Security Exchange Name | NASDAQ |
| Warrants to purchase one share of | |
| Affiliate, Collateralized Security [Line Items] | |
| Title of 12(b) Security | Warrants to purchase one share of |
| Trading Symbol | ENSCW |
| Security Exchange Name | NASDAQ |
