Property, Plant, and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	$ 36,907	$ 35,933
Accumulated depreciation	(10,204)	(9,198)
Property, plant, and equipment, net	26,703	26,735
Property, Plant, and Equipment (Textual)
Property, plant, and equipment, assets under capital leases	134	72
Accumulated amortization on assets under capital leases	50	40
Depreciation expense related to continuing operations	1,300	1,200	$ 1,200
Land [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	400	396
Crude Oil Processing Facilities (Member)
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	28,278	27,629
Pipeline and Terminal Facilities [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	2,456	2,380
Grain Processing Equipment [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	792	779
Administrative Buildings (Member)
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	789	789
Other [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	3,019	2,607
Construction in Progress [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	$ 1,173	$ 1,353