Properties, Plants and Equipment (Components Of Property, Plants And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	$ 6,780,980	$ 6,523,789
Accumulated depreciation	(2,098,446)	(1,810,515)
Properties, plants and equipment, net	4,682,534	4,713,274
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	455,508	442,214
Refining facilities
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	4,034,546	3,904,161
Pipelines and terminals
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	1,729,994	1,484,502
Transportation vehicles
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	20,311	20,394
Other fixed assets
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	296,843	467,469
Construction in progress
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	$ 243,778	$ 205,049