Debt (Details 2) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
Remaining principal payments under existing debt agreements
Remaining six months of 2013	$ 65.6
2014	126.2
2015	176.9
2016	553.1
2017	82.2
Thereafter	1,961.2
Recourse | Manufacturing/Corporate
Remaining principal payments under existing debt agreements
Remaining six months of 2013	0.2
2014	0.2
2015	0.2
2016	0.2
2017	0.2
Thereafter	450.0
Recourse | Railcar Leasing and Management Services Group | Capital lease obligations
Remaining principal payments under existing debt agreements
Remaining six months of 2013	1.5
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 six months of 2013	7.9
2014	16.9
2015	18.6
2016	21.9
2017	24.1
Thereafter	159.1
Non-recourse | Railcar Leasing and Management Services Group | Promissory notes
Remaining principal payments under existing debt agreements
Remaining six months of 2013	14.5
2014	25.4
2015	22.7
2016	349.2
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 six months of 2013	5.2
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 six months of 2013	7.3
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 six months of 2013	0
2014	0
2015	55.8
2016	111.6
2017	0
Thereafter	0
Non-recourse | Railcar Leasing and Management Services Group | 2012 secured railcar equipment notes - RIV 2013
Remaining principal payments under existing debt agreements
Remaining six months of 2013	8.4
2014	16.6
2015	15.7
2016	15.9
2017	13.8
Thereafter	256.6
Non-recourse | Railcar Leasing and Management Services Group | TRIP Master Funding secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining six months of 2013	20.6
2014	40.1
2015	35.7
2016	29.3
2017	20.4
Thereafter	$ 631.3