Debt (Details 2) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	$ 108.6
2016	435.1
2017	103.8
2018	139.0
2019	206.6
Thereafter	2,549.0
Recourse \| Corporate
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	0.2
2016	0.2
2017	0.3
2018	0
2019	0
Thereafter	849.5
Recourse \| Railcar Leasing and Management Services Group \| Capital lease obligations
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	2.5
2016	3.5
2017	3.7
2018	28.6
2019	0
Thereafter	0
Non-recourse \| Railcar Leasing and Management Services Group \| 2006 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	14.1
2016	21.8
2017	24.0
2018	25.3
2019	28.0
Thereafter	105.4
Non-recourse \| Railcar Leasing and Management Services Group \| Promissory notes
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	18.9
2016	322.4
2017	0
2018	0
2019	0
Thereafter	0
Non-recourse \| Railcar Leasing and Management Services Group \| 2009 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	7.2
2016	6.5
2017	6.3
2018	6.5
2019	11.2
Thereafter	148.7
Non-recourse \| Railcar Leasing and Management Services Group \| 2010 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	11.5
2016	14.9
2017	13.7
2018	10.0
2019	7.6
Thereafter	250.0
Non-recourse \| Railcar Leasing and Management Services Group \| TILC warehouse facility
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	2.8
2016	3.7
2017	3.7
2018	3.7
2019	0.7
Thereafter	0
Non-recourse \| Railcar Leasing and Management Services Group \| TRL 2012 secured railcar equipment notes (RIV 2013)
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	17.1
2016	22.3
2017	22.9
2018	23.1
2019	22.2
Thereafter	358.5
Non-recourse \| Railcar Leasing and Management Services Group \| TRIP Master Funding secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	34.3
2016	39.8
2017	29.2
2018	41.8
2019	50.1
Thereafter	836.9
Non-recourse \| Railcar Leasing and Management Services Group \| Facility termination payments - TILC warehouse facility
Remaining principal payments under existing debt agreements
Remaining nine months of 2015	0
2016	0
2017	0
2018	0
2019	86.8
Thereafter	$ 0

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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