XML 59 R38.htm IDEA: XBRL DOCUMENT v3.20.1
Related Party Transactions - Summary of Revenue From Contracts With Customers on Disaggregated Basis (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Disaggregation Of Revenue [Line Items]    
Total revenues from contracts with customers $ 290.6 $ 189.4 [1]
Other income 0.2 0.2 [1]
Total revenues 290.8 189.6 [1]
Oil and Gas Gathering Services    
Disaggregation Of Revenue [Line Items]    
Total revenues from contracts with customers 117.4 79.0
Water Gathering and Disposal Services    
Disaggregation Of Revenue [Line Items]    
Total revenues from contracts with customers 24.2 15.4
Processing and Storage Services    
Disaggregation Of Revenue [Line Items]    
Total revenues from contracts with customers 96.8 66.3
Terminaling and Export Services    
Disaggregation Of Revenue [Line Items]    
Total revenues from contracts with customers $ 52.2 $ 28.7
[1] The financial information presented in this report has been retrospectively adjusted for the acquisition of Hess Infrastructure Partners LP.