| Document and Entity Information | Oct. 21, 2022 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001828182 |
| Document Type | 8-K |
| Document Period End Date | Oct. 21, 2022 |
| Entity Registrant Name | Signify Health, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-40028 |
| Entity Tax Identification Number | 85-3481223 |
| Entity Address, Address Line One | 4055 Valley View Lane |
| Entity Address, Address Line Two | Suite 700 |
| Entity Address, City or Town | Dallas |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75244 |
| City Area Code | (972) |
| Local Phone Number | 715-3800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock, $0.01 par value |
| Trading Symbol | SGFY |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
