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Commitments and Contingencies (Details)
1 Months Ended 3 Months Ended
Aug. 31, 2005
USD ($)
Mar. 31, 2018
USD ($)
claim
defendant
case
Dec. 31, 2017
USD ($)
Apr. 08, 2016
USD ($)
Commitments and Contingencies        
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners   35.00%    
Accrual for Environmental Loss Contingencies   $ 7,000,000.0    
Lima Refinery Litigation        
Commitments and Contingencies        
Loss contingency damages sought       $ 106,000,000
Lima Refinery property damages       $ 289,000,000
Brazilian Tax Disputes - Jan 2004 through May 2005 | Sao Paulo State Revenue Authority        
Commitments and Contingencies        
Damages sought - principal   2,000,000    
Damages sought - interest, penalties and fees   24,000,000    
Brazilian Tax Disputes - Jan 2002 through Dec 2003 | Sao Paulo State Revenue Authority        
Commitments and Contingencies        
Damages sought - principal $ 1,800,000      
Damages sought - interest, penalties and fees 5,800,000      
Amount of damages sought $ 7,600,000      
Brazilian Labor Claims        
Commitments and Contingencies        
Loss contingency reserves   $ 9,900,000 $ 9,600,000  
Other        
Commitments and Contingencies        
Approximate number of defendants that includes the company named in legal actions | defendant   90    
Number of pending claims | claim   17,251    
Number of claims dismissed to date by stipulation or summary judgment prior to trial | case   27,971    
Other | Active or In Extremis docket        
Commitments and Contingencies        
Number of pending claims | claim   25    
Other | Minimum        
Commitments and Contingencies        
Amount of damages sought   $ 20,000,000    
Other | Maximum        
Commitments and Contingencies        
Amount of damages sought   $ 25,000,000    
Other | New York County as managed by the New York Supreme Court        
Commitments and Contingencies        
Number of pending claims | case   16,737    
Other | New York County as managed by the New York Supreme Court | Pending And Future Litigation, Deferred Or Inactive Docket        
Commitments and Contingencies        
Number of pending claims | claim   16,712    
Other | New York State Supreme Court, Counties Excluding New York County        
Commitments and Contingencies        
Number of pending claims | case   111    
Other | Courts Located In States Other Than New York        
Commitments and Contingencies        
Number of pending claims | case   403    
Consolidated Revenues | Subsidiary Concentration Risk        
Commitments and Contingencies        
Concentration risk, percentage   2.00%