Quarterly report pursuant to Section 13 or 15(d)

Transportation and Distribution Revenue - Schedules of Concentration of Risk (Details)

v3.21.1
Transportation and Distribution Revenue - Schedules of Concentration of Risk (Details) - Product and services - Revenue
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Crude oil transportation revenue    
Concentration Risk [Line Items]    
Concentration percentage 73.30% 0.00%
Natural gas transportation revenue    
Concentration Risk [Line Items]    
Concentration percentage 17.90% 68.80%
Natural gas distribution revenue    
Concentration Risk [Line Items]    
Concentration percentage 5.60% 23.20%