Railcar Leasing and Management Services Group (Details 2) (Leasing Group [Member], USD $) In Millions	Sep. 30, 2011
Future contractual minimum rental revenues on leases
Remaining three months of 2011	$ 92.9
2012	331.4
2013	252.6
2014	181.8
2015	142.2
Thereafter	329.1
Total	1,330.0
TRIP Holdings [Member]
Future contractual minimum rental revenues on leases
Remaining three months of 2011	26.4
2012	91.5
2013	60.8
2014	40.2
2015	33.3
Thereafter	83.3
Total	335.5
Wholly Owned Subsidiaries [Member]
Future contractual minimum rental revenues on leases
Remaining three months of 2011	66.5
2012	239.9
2013	191.8
2014	141.6
2015	108.9
Thereafter	245.8
Total	$ 994.5

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Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 23

-Subparagraph b(ii)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

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Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

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Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

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Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

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Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

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