Debt (Details 2) $ in Millions	Jun. 30, 2015 USD ($)
Remaining principal payments under existing debt agreements
Remaining six months of 2015	$ 63.2
2016	119.4
2017	110.5
2018	145.7
2019	404.8
Thereafter	2,549.0
Recourse \| Corporate
Remaining principal payments under existing debt agreements
Remaining six months of 2015	0.2
2016	0.2
2017	0.3
2018	0.0
2019	0.0
Thereafter	849.5
Recourse \| Railcar Leasing and Management Services Group \| Capital lease obligations
Remaining principal payments under existing debt agreements
Remaining six months of 2015	1.6
2016	3.5
2017	3.7
2018	28.7
2019	0.0
Thereafter	0.0
Non-recourse \| Railcar Leasing and Management Services Group \| 2006 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining six months of 2015	9.6
2016	21.8
2017	24.0
2018	25.3
2019	28.0
Thereafter	105.3
Non-recourse \| Railcar Leasing and Management Services Group \| 2009 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining six months of 2015	4.8
2016	6.5
2017	6.3
2018	6.4
2019	11.2
Thereafter	148.8
Non-recourse \| Railcar Leasing and Management Services Group \| 2010 secured railcar equipment notes
Remaining principal payments under existing debt agreements
Remaining six months of 2015	7.7
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 six months of 2015	5.2
2016	10.4
2017	10.4
2018	10.4
2019	2.6
Thereafter	0.0
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 2015	10.9
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 six months of 2015	23.2
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 six months of 2015	0.0
2016	0.0
2017	0.0
2018	0.0
2019	283.1
Thereafter	$ 0.0

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