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Railcars in Flammable Service

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair value portion of assets classified as held for sale.

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Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3).

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Asset Impairments and Assets Held for Sale (Details)	3 Months Ended	12 Months Ended
Asset Impairments and Assets Held for Sale (Details)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 Vessel	Sep. 30, 2015
Assets Held-for-sale, Long Lived, Fair Value Disclosure		$ 1,300,000	$ 4,500,000
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property		79,400,000	52,500,000	$ 52,900,000
Asset Impairment Charges		9,000,000	8,600,000	38,500,000
Equity Method Investment, Net Sales Proceeds		0	2,300,000	1,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Number of railars				400
Cardinal Marine [Domain]
Noncontrolling Interest, Ownership Percentage by Parent						50.00%
Rail North America [Member]
Assets Held-for-sale, Long Lived, Fair Value Disclosure				43,900,000
Asset Impairment Charges		600,000	4,600,000	31,200,000
Rail International [Member]
Asset Impairment Charges		3,900,000	300,000	600,000
Portfolio Management [Member]
Gain (Loss) on Disposition of Assets			1,800,000	5,200,000
Asset Impairment Charges		4,500,000	3,700,000	6,700,000
Nordic Vessels [Member]
Number Of Vessels \| Vessel					6
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Number of railars				2,400
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Asset Impairment Charges		6,000,000	8,600,000	2,000,000
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| Rail North America [Member]
Asset Impairment Charges				5,800,000
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| Facility Closing [Member] \| Rail International [Member]
Asset Impairment Charges	$ 5,800,000	3,000,000
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| Nordic Vessels [Member] \| Portfolio Management [Member]
Asset Impairment Charges			0	6,700,000
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| InflammableRailcars [Member] \| Rail North America [Member]
Asset Impairment Charges		0	0	29,800,000
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| InflammableRailcars [Member] \| Rail International [Member]
Asset Impairment Charges			$ 0	0
Fair Value, Measurements, Nonrecurring [Member] \| Changes Measurement [Member] \| Fair Value, Inputs, Level 3 [Member] \| Marine vessels [Member] \| Portfolio Management [Member]
Asset Impairment Charges		$ 0		$ 6,700,000
Railcars [Member]
Non-recurring Level 3 fair value measurements				90