| Cover Page | Oct. 01, 2019 |
| Cover page. | |
| Document Type | 8-K |
| Document Period End Date | Oct. 1, 2019 |
| Entity Registrant Name | NOBLE ENERGY, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-07964 |
| Entity Tax Identification Number | 73-0785597 |
| Entity Address, Address Line One | 1001 Noble Energy Way |
| Entity Address, Postal Zip Code | 77070 |
| Entity Address, City or Town | Houston, |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Trading Symbol | NBL |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Security Exchange Name | NYSE |
| Entity Central Index Key | 0000072207 |
| Amendment Flag | false |
| Entity Address, State or Province | TX |
| City Area Code | (281) |
| Local Phone Number | 872-3100 |
