Transportation and Distribution Revenue - Schedules of Concentration of Risk (Details) - Product and services - Revenue	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Crude oil transportation revenue
Concentration Risk [Line Items]
Concentration percentage	84.60%	0.00%	80.70%	0.00%
Natural gas transportation revenue
Concentration Risk [Line Items]
Concentration percentage	11.40%	64.60%	13.50%	67.20%
Natural gas distribution revenue
Concentration Risk [Line Items]
Concentration percentage	3.50%	26.00%	4.30%	25.30%