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Subsequent Events (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Jul. 28, 2021
Jul. 27, 2021
Sep. 30, 2021
Aug. 01, 2021
Jun. 30, 2021
Forecast          
Subsequent Event [Line Items]          
Percent interest in consolidated entity     45.00%    
Long-term Debt, Current Maturities          
Subsequent Event [Line Items]          
Unsecured debt, current         $ 500
Subsequent Event          
Subsequent Event [Line Items]          
Term loan   $ 1,000      
Prepayment of principal amount of term loan   $ 500      
Number of Class B units repurchased by Hess Midstream LP (in shares) 31        
Proceeds from repurchase of units held by Hess Corporation and Global Infrastructure Partners, by Hess Midstream Operations LP $ 750        
Proceeds from repurchase of units held by parent by consolidated subsidiary $ 375        
Principal amount of senior unsecured notes issued by Hess Midstream Operations LP       $ 750