Carrying Value of Investment In Majority Owned Consolidated Subsidiary

No definition available.

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- Definition

Equipment purchased by majority owned consolidated subsidiary from the Company.

+ References

No definition available.

+ Details

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- Definition

Noncontrolling Interest, Additional Interest Acquired in Less-than-Wholly Owned Subsidiary

+ References

No definition available.

+ Details

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- Definition

Number of third-party equity investors in majority owned consolidated subsidiary.

+ References

No definition available.

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- Definition

Parent Company Guarantees of Majority Owned Subsidiary

+ References

No definition available.

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- Definition

Remaining equity commitment outstanding.

+ References

No definition available.

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

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- Definition

Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 24

-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4616395-111683

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph c(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569655-111683

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

The cash outflow during the period for redemption of redeemable noncontrolling interests.

+ References

No definition available.

+ Details

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Partially-Owned Leasing Subsidiary (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Mar. 31, 2013 third_party_investors	Mar. 31, 2013 TRIP Holdings	Mar. 31, 2012 TRIP Holdings	Dec. 31, 2012 TRIP Holdings
Schedule of Investments [Line Items]
Railcars purchased from the Company by subsidiaries of TRIP Holdings	$ 1,331.4
Additional interest acquired in TRIP Holdings	16.00%
Purchase price of additional interest in TRIP Holdings	31.7
Reduction in carrying value of noncontrolling interest from purchase of additional interest in TRIP Holdings	32.3
Ownership percentage in TRIP Holdings	73.00%
Number of other third-party equity investors in TRIP Holdings	2
Trinity's remaining equity commitment outstanding		0
Trinity's guarantee of TRIP-related activities		0
Carrying value of TILC's investment in TRIP Holdings		128.3		95.6
Administrative fees to TILC by TRIP Holdings and subsidiaries		$ 1.3	$ 1.3