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Acquisitions - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 16, 2019
Dec. 15, 2019
Mar. 22, 2019
Mar. 01, 2019
Mar. 31, 2019
Business Acquisition [Line Items]          
Cash paid for business acquisition, net of cash acquired [1]         $ 89.2
Hess Infrastructure Partners LP Acquisition          
Business Acquisition [Line Items]          
Percentage of ownership interest 80.00% 80.00%      
Cash consideration $ 601.8        
Stock split conversion ratio 1        
Hess Infrastructure Partners LP Acquisition | Class A Shares          
Business Acquisition [Line Items]          
Units representing noncontrolling limited partner interests 898,000        
Hess Infrastructure Partners LP Acquisition | Class B Shares          
Business Acquisition [Line Items]          
Units representing noncontrolling limited partner interests 266,416,928        
Hess Water Services Holdings Limited Liability Company          
Business Acquisition [Line Items]          
Percentage of ownership interest 100.00%        
Hess Water Services and Hess Midstream Partners GP Limited Partner          
Business Acquisition [Line Items]          
Percentage of ownership interest   100.00%      
Hess Infrastructure Partners LP          
Business Acquisition [Line Items]          
Percentage of membership interest acquired       100.00%  
Cash paid for business acquisition, net of cash acquired       $ 225.0  
Hess          
Business Acquisition [Line Items]          
Business combination consideration transferred in excess of book value of net assets acquired as capital distribution       $ 156.1  
Tioga System Acquisition          
Business Acquisition [Line Items]          
Percentage of membership interest acquired     100.00%    
Cash paid for business acquisition, net of cash acquired     $ 89.2    
Potential contingent payments, subject to certain future performance metrics     $ 10.0    
[1] The financial information presented in this report has been retrospectively adjusted for the acquisition of Hess Infrastructure Partners LP.