| Cover | Mar. 03, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 22, 2021 |
| Entity Registrant Name | MANNING & NAPIER, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35355 |
| Entity Tax Identification Number | 45-2609100 |
| Entity Address, Address Line One | 290 Woodcliff Drive |
| Entity Address, City or Town | Fairport |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 14450 |
| City Area Code | 585 |
| Local Phone Number | 325-6880 |
| 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, $0.01 par value per share |
| Trading Symbol | MN |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001524223 |
| Amendment Flag | false |
