Railcar Leasing and Management Services Group (Details 5) - Railcar Leasing and Management Services Group $ in Millions	Dec. 31, 2016 USD ($)
Railroad transportation equipment leased from independent owner trusts
Future operating lease obligations of Trusts’ railcars
2017	$ 29.2
2018	29.2
2019	28.8
2020	26.1
2021	26.1
Thereafter	118.0
Total	257.4
Future contractual minimum rental revenues of Trusts’ railcars
2017	44.8
2018	34.1
2019	24.0
2020	14.7
2021	9.6
Thereafter	14.5
Total	141.7
Other Third Parties
Future operating lease obligations of Trusts’ railcars
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 of Trusts’ railcars
2017	15.3
2018	8.3
2019	6.2
2020	4.3
2021	3.4
Thereafter	4.2
Total	$ 41.7