| Document and Entity Information | Aug. 02, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 2, 2021 |
| Entity Registrant Name | Rover Group, Inc. |
| Entity Central Index Key | 0001826018 |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39774 |
| Entity Tax Identification Number | 85-3147201 |
| Entity Address, Address Line One | 720 Olive Way |
| Entity Address, Address Line Two | 19th Floor |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98101 |
| City Area Code | 888 |
| Local Phone Number | 453-7889 |
| Entity Information, Former Legal or Registered Name | Nebula Caravel Acquisition Corp. |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Common Stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.0001per share |
| Trading Symbol | ROVR |
| Security Exchange Name | NASDAQ |
| Warrants to Purchase One Share of Common Stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase one share ofCommon Stock |
| Trading Symbol | ROVRW |
| Security Exchange Name | NASDAQ |
| Former Address | |
| Document Information [Line Items] | |
| Entity Address, Address Line One | Four Embarcadero Center |
| Entity Address, Address Line Two | Suite 2100 |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94111 |
