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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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