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Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 14,012	$ 13,644
Less: Accumulated depreciation and amortization	(3,890)	(4,109)
Property, plant and equipment, net	10,122	9,535
Depreciation and amortization expense related to property, plant and equipment	917	752	$ 701
Railcar Segment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	1,567	2,767
Assets leased to others | Railcar Segment
Property, Plant and Equipment [Line Items]
Property, plant and equipment held for sale, gross	2,100
Accumulated depreciation of property, plant and equipment held for sale	950
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	944	549
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,050	$ 2,459
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	3 years	3 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	40 years	40 years
Machinery, equipment and furniture
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,538	$ 6,044
Machinery, equipment and furniture | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	1 year	1 year
Machinery, equipment and furniture | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	30 years	30 years
Assets leased to others
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,939	$ 3,994
Less: Accumulated depreciation and amortization	(224)	(1,100)
Assets leased to others | Railcars
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,500	3,600
Assets leased to others | Real estate properties [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	415	$ 423
Assets leased to others | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)		15 years
Assets leased to others | Maximum
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	$ 541	$ 598

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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