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Hess Midstream LP (Detail) - USD ($)
shares in Thousands, $ in Millions
1 Months Ended 3 Months Ended
Mar. 31, 2021
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Variable Interest Entity [Line Items]        
Proceeds from sale of Class A shares of Hess Midstream LP $ 70 $ 70 $ 0  
Number of Class A shares of subsidiary public offering (in shares) 3,450      
Sale of Class A shares of Hess Midstream LP   97    
Liabilities $ 12,308 12,308   $ 12,486
Cash and cash equivalents 1,866 1,866   1,739
Property, plant and equipment, net $ 13,863 13,863   14,115
Capital in Excess of Par        
Variable Interest Entity [Line Items]        
Sale of Class A shares of Hess Midstream LP   56    
Noncontrolling Interests        
Variable Interest Entity [Line Items]        
Sale of Class A shares of Hess Midstream LP   41    
Noncontrolling Interests | Change In Ownership        
Variable Interest Entity [Line Items]        
Sale of Class A shares of Hess Midstream LP   14    
Noncontrolling Interests | Recognition of Deferred Tax Asset        
Variable Interest Entity [Line Items]        
Sale of Class A shares of Hess Midstream LP   27    
Hess Midstream LP        
Variable Interest Entity [Line Items]        
Percent interest in consolidated entity 46.00%      
Cash and cash equivalents $ 2 2   3
Property, plant and equipment, net 3,095 3,095   3,111
Hess Midstream LP | Nonrecourse        
Variable Interest Entity [Line Items]        
Liabilities 1,984 1,984   2,026
Hess Midstream LP | Little Missouri Four        
Variable Interest Entity [Line Items]        
Equity method investment $ 104 $ 104   $ 108