| Cover | Aug. 18, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 18, 2021 |
| Entity Registrant Name | New Relic, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-36766 |
| Entity Tax Identification Number | 26-2017431 |
| Entity Address, Address Line One | 188 Spear Street |
| Entity Address, Address Line Two | Suite 1000 |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94105 |
| City Area Code | 650 |
| Local Phone Number | 777-7600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | NEWR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001448056 |
| Current Fiscal Year End Date | --03-31 |
