Document And Entity Information (USD $)
In Billions, except Share data, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Document And Entity Information [Abstract]  
Entity Registrant Name NOBLE ENERGY INC
Entity Central Index Key 0000072207
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Public Float $ 27.9
Entity Common Stock, Shares Outstanding 361,732,310
Document Fiscal Year Focus 2014
Document Fiscal Period Focus Q2
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 30, 2014