Properties, Plants and Equipment (Components Of Property, Plants And Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	$ 5,546,856	$ 5,490,189
Accumulated depreciation	(1,538,408)	(1,374,527)
Properties, plants and equipment, net	4,008,448	4,115,662
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	326,097	305,712
Refining facilities
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	3,382,369	2,833,125
Pipelines and terminals
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	1,392,898	1,321,398
Transportation vehicles
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	18,841	21,289
Other fixed assets
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	153,463	158,401
Construction in progress
Property, Plant and Equipment [Line Items]
Properties, plants and equipment, at cost	$ 273,188	$ 850,264