Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 14,901		$ 13,644
Less: Accumulated depreciation and amortization	(4,329)		(4,109)
Property, plant and equipment, net	10,572		9,535
Depreciation and amortization expense related to property, plant and equipment	207	$ 182
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	790		549
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,975		2,456
Buildings and improvements | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	4 years
Buildings and improvements | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	40 years
Machinery, equipment and furniture
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 6,522		6,047
Machinery, equipment and furniture | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	1 year
Machinery, equipment and furniture | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	30 years
Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,025		3,994
Less: Accumulated depreciation and amortization	$ (1,100)		(1,100)
Assets leased to others | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	15 years
Assets leased to others | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	39 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 589		598
Railcars [Member] | Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,600		3,600
Real estate properties [Member] | Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 422		$ 423