The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Revenue Recognition - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									$ 447	$ 469	$ 414
Total revenue	$ 126	$ 125	$ 121	$ 131	$ 143	$ 153	$ 129	$ 100	503	525	470
Third Parties \| Transportation Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									134	200	227
Third Parties \| Storage Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									9	9	9
Third Parties \| Product Revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									5	2	0
Related Parties
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Lease revenue – related parties									56	56	56
Related Parties \| Transportation Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									210	176	172
Related Parties \| Storage Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									7	7	6
Related Parties \| Terminaling Services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									47	46	0
Related Parties \| Product Revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									35	$ 29	$ 0
Related Parties \| Transportation Services Nonlease Service
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenue from contract with customer									$ 5