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The amount of materials and supplies recognized as of the acquisition date

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Entity Number of Locomotives Owned or Leased

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Number of Ports With Provided Rail Service

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Track Miles Leased

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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Amount of assets acquired at the acquisition date.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary difference assumed at the acquisition date that are classified as noncurrent.

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Changes in Operations United States - P&W (Details) $ / shares in Units, $ in Thousands		3 Months Ended
	Nov. 01, 2016 USD ($) mile employee port locomotive carload $ / shares	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Goodwill		$ 1,149,582	$ 1,125,596
Providence and Worcester Railroad [Member]
Business Acquisition, Effective Date of Acquisition	Nov. 01, 2016
Business Acquisition, Share Price \| $ / shares	$ 25.00
Cash consideration	$ 126,200
Business Combination, Integration Related Costs		2,400
Number of employees \| employee	140
Locomotives \| locomotive	32
Track Miles Owned \| mile	163
Track Miles Leased \| mile	350
Annual carloads transported \| carload	44,000
Number of Ports With Provided Rail Service \| port	3
Cash and cash equivalents	$ 1,529
Accounts receivable	4,011
Materials and supplies	1,048
Prepaid expenses and other	648
Property and equipment	129,473
Goodwill	27,938
Total Assets	164,647
Accounts payable and accrued expenses	9,759
Deferred income tax liabilities, net	27,464
Other long-term liabilities	1,273
Net assets	$ 126,151
Operating Income (Loss) [Member] \| Providence and Worcester Railroad [Member]
Business Combination, Integration Related Costs		2,200
Other Expense [Member] \| Providence and Worcester Railroad [Member]
Business Combination, Integration Related Costs		$ 200