| Document and Entity Information | Sep. 27, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 27, 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 |
| 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 |
| Class A Common Stock, Par Value $0.0001 Per Share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | ROVR |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants, Each Whole Warrant Exercisable for One Share of Class A Common Stock at an Exercise Price of $11.50 | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50 |
| Trading Symbol | ROVRW |
| Security Exchange Name | NASDAQ |
