Debt (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013
Remaining principal payments under existing debt agreements
Remaining three months of 2013	$ 34.7
2014	135.3
2015	180.8
2016	546.5
2017	91.6
Thereafter	2,109.8
Recourse | Manufacturing/Corporate
Remaining principal payments under existing debt agreements
Remaining three months of 2013	0
2014	0.2
2015	0.2
2016	0.2
2017	0.3
Thereafter	450.0
Recourse | Railcar Leasing and Management Services Group | Capital lease obligations
Remaining principal payments under existing debt agreements
Remaining three months of 2013	0.7
2014	3.1
2015	3.3
2016	3.5
2017	3.7
Thereafter	28.6
Non-recourse | Railcar Leasing and Management Services Group | 2006 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining three months of 2013	4.0
2014	16.9
2015	18.6
2016	21.9
2017	24.1
Thereafter	159.2
Non-recourse | Railcar Leasing and Management Services Group | Promissory notes
Remaining principal payments under existing debt agreements
Remaining three months of 2013	7.3
2014	26.1
2015	23.9
2016	346.2
2017	0
Thereafter	0
Non-recourse | Railcar Leasing and Management Services Group | 2009 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining three months of 2013	2.6
2014	9.9
2015	9.6
2016	6.5
2017	6.3
Thereafter	166.7
Non-recourse | Railcar Leasing and Management Services Group | 2010 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining three months of 2013	3.5
2014	14.0
2015	15.3
2016	15.0
2017	13.7
Thereafter	268.9
Non-recourse | Railcar Leasing and Management Services Group | TILC warehouse facility - facility termination payments
Remaining principal payments under existing debt agreements
Remaining three months of 2013	0
2014	0
2015	50.7
2016	101.3
2017	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
Remaining three months of 2013	6.3
2014	25.0
2015	23.5
2016	22.6
2017	23.1
Thereafter	405.1
Non-recourse | Railcar Leasing and Management Services Group | TRIP Master Funding secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining three months of 2013	10.3
2014	40.1
2015	35.7
2016	29.3
2017	20.4
Thereafter	$ 631.3