| Document and Entity Information | Dec. 18, 2020 |
| Cover [Abstract] | |
| Entity Address, State or Province | TX |
| Amendment Flag | false |
| Entity Central Index Key | 0001539838 |
| Document Type | 8-K |
| Document Period End Date | Dec. 18, 2020 |
| Entity Registrant Name | DIAMONDBACK ENERGY, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35700 |
| Entity Tax Identification Number | 45-4502447 |
| Entity Address, Address Line One | 500 West Texas |
| Entity Address, Address Line Two | Suite 1200 |
| Entity Address, City or Town | Midland |
| Entity Address, Postal Zip Code | 79701 |
| City Area Code | (432) |
| Local Phone Number | 221-7400 |
| Written Communications | true |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.01 par value |
| Trading Symbol | FANG |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
