| Document and Entity Information Document | Sep. 15, 2020 |
| Cover [Abstract] | |
| Entity Central Index Key | 0000945764 |
| Document Type | 8-K |
| Document Period End Date | Sep. 15, 2020 |
| Entity Registrant Name | DENBURY RESOURCES INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-12935 |
| Entity Tax Identification Number | 20-0467835 |
| Entity Address, Address Line One | 5320 Legacy Drive |
| Entity Address, City or Town | Plano, |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75024 |
| City Area Code | (972) |
| Local Phone Number | 673-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
