| Cover | Mar. 15, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 15, 2022 |
| Entity Registrant Name | SENTINELONE, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40531 |
| Entity Tax Identification Number | 99-0385461 |
| Entity Address, Address Line One | 444 Castro Street |
| Entity Address, Address Line Two | Suite 400 |
| Entity Address, City or Town | Mountain View |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94041 |
| City Area Code | 855 |
| Local Phone Number | 868-3733 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A common stock, par value $0.0001 |
| Trading Symbol | S |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001583708 |
| Amendment Flag | false |
