Railcar Leasing and Management Services Group (Details 6) - Railcar Leasing and Management Services Group - Other Third Parties $ in Millions	Dec. 31, 2016 USD ($)
Future operating lease obligations
2017	$ 12.1
2018	12.0
2019	9.5
2020	7.7
2021	7.6
Thereafter	13.4
Total	62.3
Future contractual minimum rental revenues
2017	15.3
2018	8.3
2019	6.2
2020	4.3
2021	3.4
Thereafter	4.2
Total	$ 41.7