Railcar Leasing and Management Services Group (Details 4) (Leasing Group [Member], USD $) In Millions	Sep. 30, 2011
Future contractual minimum rental revenues related to operating leases other than leases with the Trusts
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
Future Operating Lease Obligations [Member]
Future contractual minimum rental revenues related to operating leases other than leases with the Trusts
Remaining three months of 2011	1.4
2012	5.6
2013	5.3
2014	5.2
2015	5.2
Thereafter	16.1
Total	38.8
Future Contractual Minimum Rental Revenues [Member]
Future contractual minimum rental revenues related to operating leases other than leases with the Trusts
Remaining three months of 2011	1.4
2012	5.2
2013	4.2
2014	3.7
2015	2.8
Thereafter	7.0
Total	$ 24.3

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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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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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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