Document And Entity Information
9 Months Ended
Sep. 30, 2017
Document And Entity Information [Abstract]  
Entity Registrant Name NOBLE ENERGY INC
Entity Central Index Key 0000072207
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 486,607,284
Document Fiscal Year Focus 2017
Document Fiscal Period Focus Q3
Document Type 10-Q
Amendment Flag false
Document Period End Date Sep. 30, 2017