Property, Plant, and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	$ 33,933,000,000	$ 34,132,000,000
Accumulated depreciation	(8,226,000,000)	(7,832,000,000)
Property, plant, and equipment, net	25,707,000,000	26,300,000,000
Property, Plant and Equipment (Textual)
Property, plant, and equipment, capital leases	74,000,000	83,000,000
Accumulated amortization on assets under capital leases	(35,000,000)	(35,000,000)
Depreciation expense related to continuing operations	1,200,000,000	1,100,000,000	1,100,000,000
Land [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	404,000,000	802,000,000
Crude Oil Processing Facilities (Member)
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	27,260,000,000	24,865,000,000
Pipeline and Terminal Facilities [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	1,513,000,000	1,471,000,000
Grain Processing Equipment [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	719,000,000	694,000,000
Retail Facilities (Member)
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	0	1,480,000,000
Administrative Buildings (Member)
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	800,000,000	734,000,000
Other [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	2,109,000,000	1,457,000,000
Construction in Progress [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost	$ 1,128,000,000	$ 2,629,000,000