Debt (Details 2) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Remaining principal payments under existing debt agreements
2014	$ 133.1
2015	178.6
2016	550.8
2017	91.5
2018	113.8
Thereafter	1,996.1
Recourse \| Corporate
Remaining principal payments under existing debt agreements
2014	0.2
2015	0.2
2016	0.2
2017	0.3
2018	0
Thereafter	450.0
Recourse \| Railcar Leasing and Management Services Group \| Capital lease obligations
Remaining principal payments under existing debt agreements
2014	3.1
2015	3.3
2016	3.5
2017	3.7
2018	28.6
Thereafter	0
Non-recourse \| Railcar Leasing and Management Services Group \| 2006 secured railcar equipment notes
Remaining principal payments under existing debt agreements
2014	16.9
2015	18.6
2016	21.9
2017	24.0
2018	25.4
Thereafter	133.9
Non-recourse \| Railcar Leasing and Management Services Group \| Promissory notes
Remaining principal payments under existing debt agreements
2014	23.9
2015	21.7
2016	350.5
2017	0
2018	0
Thereafter	0
Non-recourse \| Railcar Leasing and Management Services Group \| 2009 secured railcar equipment notes
Remaining principal payments under existing debt agreements
2014	9.9
2015	9.6
2016	6.5
2017	6.3
2018	6.5
Thereafter	160.2
Non-recourse \| Railcar Leasing and Management Services Group \| 2010 secured railcar equipment notes
Remaining principal payments under existing debt agreements
2014	14.0
2015	15.3
2016	15.0
2017	13.7
2018	10.0
Thereafter	258.9
Non-recourse \| Railcar Leasing and Management Services Group \| TILC warehouse facility - facility termination payments
Remaining principal payments under existing debt agreements
2014	0
2015	50.7
2016	101.3
2017	0
2018	0
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
2014	25.0
2015	23.5
2016	22.6
2017	23.1
2018	23.4
Thereafter	381.7
Non-recourse \| Railcar Leasing and Management Services Group \| TRIP Master Funding secured railcar equipment notes
Remaining principal payments under existing debt agreements
2014	40.1
2015	35.7
2016	29.3
2017	20.4
2018	19.9
Thereafter	$ 611.4

Name:	us-gaap_LongTermDebtByMaturityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

+ 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

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant