| Cover Page | Dec. 07, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 7, 2021 |
| Entity Registrant Name | Bright Health Group, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40537 |
| Entity Tax Identification Number | 47-4991296 |
| Entity Address, Address Line One | 8000 Norman Center Drive Suite 1200 |
| Entity Address, City or Town | Minneapolis |
| Entity Address, State or Province | MN |
| Entity Address, Postal Zip Code | 55437 |
| City Area Code | 612 |
| Local Phone Number | 238-1321 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value per share |
| Trading Symbol | BHG |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001671284 |
| Amendment Flag | false |
