Debt (Details 2) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Remaining principal payments under existing debt agreements
Remaining six months of 2014	$ 72.5
2015	183.2
2016	544.4
2017	100.5
2018	136.0
Thereafter	2,272.9
Recourse | Corporate
Remaining principal payments under existing debt agreements
Remaining six months of 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
Remaining six months of 2014	1.6
2015	3.2
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
Remaining six months of 2014	8.7
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
Remaining six months of 2014	10.6
2015	21.7
2016	349.7
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
Remaining six months of 2014	5.0
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
Remaining six months of 2014	7.2
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
Remaining principal payments under existing debt agreements
Remaining six months of 2014	2.3
2015	4.3
2016	3.9
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
Remaining six months of 2014	12.3
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
Remaining six months of 2014	24.6
2015	46.3
2016	40.1
2017	29.4
2018	42.1
Thereafter	888.2
Non-recourse | Railcar Leasing and Management Services Group | Facility termination payments - TILC warehouse facility
Remaining principal payments under existing debt agreements
Remaining six months of 2014	0
2015	40.5
2016	81.0
2017	0
2018	0
Thereafter	$ 0