| Cover | Jun. 11, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jun. 11, 2024 |
| Entity Registrant Name | RUBRIK, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-42028 |
| Entity Address, Address Line One | 3495 Deer Creek Road |
| Entity Tax Identification Number | 46-4560494 |
| Entity Address, City or Town | Palo Alto |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94304 |
| City Area Code | 844 |
| Local Phone Number | 478-2745 |
| 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, $0.000025 par value |
| Trading Symbol | RBRK |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001943896 |
