| Document and Entity Information Document | Dec. 02, 2020 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 2, 2020 |
| Entity Registrant Name | Elastic N.V. |
| Entity Central Index Key | 0001707753 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-38675 |
| Entity Tax Identification Number | 00-0000000 |
| Entity Incorporation, State or Country Code | P7 |
| Entity Address, Address Line One | 800 West El Camino Real |
| Entity Address, Address Line Two | Suite 350 |
| Entity Address, City or Town | Mountain View |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94040 |
| City Area Code | 650 |
| Local Phone Number | 458-2620 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Ordinary Shares, €0.01 Par Value |
| Trading Symbol | ESTC |
| Security Exchange Name | NYSE |
