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Debt (Details) - USD ($)
shares in Thousands, $ in Millions
1 Months Ended
Aug. 31, 2021
Jul. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Debt Disclosure [Abstract]        
Partial repayment of principal amount of term loan   $ 500    
Term loan     $ 500 $ 1,000
Remaining balance of term loan outstanding, expected to be paid within the next twelve months     500  
Principal amount of senior unsecured notes issued by Hess Midstream Operations LP     $ 750  
Interest rate of senior unsecured notes issued by Hess Midstream Operations LP     4.25%  
Number of Class B units repurchased by Hess Midstream LP (in shares) 31,250