Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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-Publisher SEC

-Name Regulation S-X (SX)

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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-Topic 815

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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-Topic 825

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.

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Derivative Instruments (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Jul. 31, 2011
Derivative Instruments (Textual) [Abstract]
Remaining AOCL balance	$ (3.7)	$ (6.6)
Designated as hedging instrument \| Expired hedges \| 2006 secured railcar equipment notes
Derivative Instruments (Textual) [Abstract]
Notional amount	200.0
Changes in fair value of cash flow hedges which is being amortized to income (loss)	4.5
Remaining AOCL balance	1.2
Designated as hedging instrument \| Expired hedges \| Promissory notes
Derivative Instruments (Textual) [Abstract]
Notional amount	370.0
Changes in fair value of cash flow hedges which is being amortized to income (loss)	(24.5)
Remaining AOCL balance	(0.5)
Designated as hedging instrument \| Expired hedges \| TRIP Holdings warehouse loan
Derivative Instruments (Textual) [Abstract]
Notional amount	788.5
Expected effect during next twelve months	4.9
Remaining AOCL balance	(9.5)
Designated as hedging instrument \| Open hedges \| Promissory notes
Derivative Instruments (Textual) [Abstract]
Notional amount	364.2
Remaining AOCL balance	(1.6)
Designated as hedging instrument \| Open hedges \| TRIP Master Funding secured railcar equipment notes
Derivative Instruments (Textual) [Abstract]
Notional amount	53.8		94.1
Remaining AOCL balance	(0.9)
Designated as hedging instrument \| Fuel derivative instruments
Derivative Instruments (Textual) [Abstract]
Derivative liabilities	1.4
Designated as hedging instrument \| Foreign exchange hedges
Derivative Instruments (Textual) [Abstract]
Remaining AOCL balance	$ 0