Railcar Leasing and Management Services Group (Details 5) - Railcars leased from other third parties - Railcar Leasing and Management Services Group $ in Millions	Sep. 30, 2015 USD ($)
Future operating lease obligations
Remaining three months of 2015	$ 3.2
2016	12.8
2017	12.1
2018	12.0
2019	9.5
Thereafter	28.7
Total	78.3
Future contractual minimum rental revenues
Remaining three months of 2015	5.3
2016	19.3
2017	12.4
2018	7.2
2019	3.8
Thereafter	5.9
Total	$ 53.9