Property, Plant and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment
Property, Plant and Equipment, at Cost	[1]	$ 8,145	$ 7,243	[2]
Accumulated depreciation	[1]	(1,300)	(994)	[2]
Property, Plant and Equipment, Net		6,845	6,249	[2],[3]
Property Subject to or Available for Operating Lease, Gross		691	643
Property Subject to or Available for Operating Lease, Accumulated Depreciation		224	195
Terminals and tankage
Property, Plant and Equipment
Property, Plant and Equipment, at Cost		3,749	3,557	[2]
Pipelines
Property, Plant and Equipment
Property, Plant and Equipment, at Cost		3,411	2,825	[2]
Land and leasehold improvements
Property, Plant and Equipment
Property, Plant and Equipment, at Cost		297	282	[2]
Buildings and improvements
Property, Plant and Equipment
Property, Plant and Equipment, at Cost		87	91	[2]
Other
Property, Plant and Equipment
Property, Plant and Equipment, at Cost		82	142	[2]
Construction in progress
Property, Plant and Equipment
Property, Plant and Equipment, at Cost		$ 519	346	[2]
Maximum | Terminals and tankage
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	40 years
Maximum | Pipelines
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	30 years
Maximum | Land and leasehold improvements
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	29 years
Maximum | Buildings and improvements
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	28 years
Maximum | Other
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	28 years
Minimum | Terminals and tankage
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	3 years
Minimum | Pipelines
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	5 years
Minimum | Land and leasehold improvements
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	3 years
Minimum | Buildings and improvements
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	3 years
Minimum | Other
Property, Plant and Equipment
Property, Plant and Equipment, Useful Life	[4]	1 year
Predecessor [Member]
Property, Plant and Equipment
Property, Plant and Equipment, at Cost			948
Accumulated depreciation			$ (112)

[1] Assets owned by us for which we are the lessor under operating leases were $691 million and $643 million before accumulated depreciation of $224 million and $195 million as of December 31, 2018 and 2017, respectively.

[2] Property, plant and equipment transferred to the Partnership in the 2018 Drop Down was recorded at historical costs. The Partnership recorded property, plant and equipment of $948 million and accumulated depreciation of $112 million as of December 31, 2017 in connection with the 2018 Drop Down.

[3] Adjusted to include the historical results of the Predecessors. See Notes 1 and 2 for further discussion.

[4] The above excludes assets not being depreciated.