v3.7.0.1
Segment Disclosures and Related Information - Net Income (Details 1) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips $ 586 $ (1,469)
Alaska [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips (11) (2)
Lower 48 [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips (362) (820)
Canada [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips 948 (294)
Europe and North Africa [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips 171 (51)
Asia Pacific and Middle East [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips 236 (5)
Other International [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips (48) (24)
Corporate and Other [Member]    
Net Income Attributable to ConocoPhillips    
Consolidated net income (loss) attributable to ConocoPhillips $ (348) $ (273)