Revenue Recognition - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	$ 122	$ 125
Lease revenue – related parties	13	14
Total revenue	135	139
Third Parties | Transportation Services
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	30	39
Third Parties | Storage Services
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	2	2
Related Parties
Disaggregation of Revenue [Line Items]
Lease revenue – related parties	13	14
Related Parties | Transportation Services
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	44	44
Related Parties | Storage Services
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	2	2
Related Parties | Terminaling Services
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	31	30
Related Parties | Terminaling Services, Major Maintenance
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	2	2
Related Parties | Product Revenue
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	11	6
Related Parties | Transportation Services Nonlease Service
Disaggregation of Revenue [Line Items]
Total Topic 606 revenue	$ 1	$ 1