| Cover | Jan. 05, 2022 |
| Entity Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Jan. 5, 2022 |
| Entity Registrant Name | HAGERTY, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40244 |
| Entity Tax Identification Number | 08-7654321 |
| Entity Address, Address Line One | 121 Drivers Edge |
| Entity Address, City or Town | Traverse City |
| Entity Address, State or Province | MI |
| Entity Address, Postal Zip Code | 49684 |
| City Area Code | (800) |
| Local Phone Number | 922-4050 |
| 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 |
| Entity Central Index Key | 0001840776 |
| Amendment Flag | false |
| Common Class A | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Class A common stock, par value $0.0001 per share |
| Trading Symbol | HGTY |
| Security Exchange Name | NYSE |
| HGTY:WarrantsEachWholeWarrantExercisePriceof11.50PerShareMember | |
| Entity Information [Line Items] | |
| Title of 12(b) Security | Warrants, each whole warrant exercisable for one shareof Class A common stock, each at an exercise price of$11.50 per share |
| Trading Symbol | HGTY.WS |
| Security Exchange Name | NYSE |
