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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Increase (Decrease) in Cost of Revenue

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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Derivative Instruments - Narrative - USD ($) $ in Millions	12 Months Ended			36 Months Ended
Derivative Instruments - Narrative - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2008	Sep. 30, 2017	Jul. 31, 2011	Dec. 31, 2006
Interest rate swap, Expired, TRIP Holdings warehouse loan
Derivative [Line Items]
Expected effect during next twelve months	$ 2.2
TRIP Master Funding secured railcar equipment notes
Derivative [Line Items]
Expected effect during next twelve months					$ 0.2
Fuel derivative instruments
Derivative [Line Items]
Increase (decrease) in cost of revenue	0.1	$ (0.4)	$ 1.1
Designated as hedging instrument \| Interest rate swap, Expired, 2006 secured railcar equipment notes
Derivative [Line Items]
Notional amount	200.0						$ 200.0
Changes in fair value of cash flow hedges which is being amortized to income (loss)	4.5
Designated as hedging instrument \| Interest rate swap, Promissory Notes
Derivative [Line Items]
Notional amount				$ 370.0
Changes in fair value of cash flow hedges which is being amortized to income (loss)				$ (24.5)
Designated as hedging instrument \| Interest rate swap, Expired, TRIP Holdings warehouse loan
Derivative [Line Items]
Notional amount	$ 788.5
Designated as hedging instrument \| TRIP Master Funding secured railcar equipment notes
Derivative [Line Items]
Notional amount						$ 94.1