Railcar Leasing and Management Services Group (Details 4) - Railcar Leasing and Management Services Group $ in Millions	Jun. 30, 2015 USD ($)
Future contractual minimum rental revenues on leases
Remaining six months of 2015	$ 264.8
2016	461.8
2017	387.9
2018	307.9
2019	224.1
Thereafter	339.4
Total	1,985.9
Operating leases with the Trusts
Future contractual minimum rental obligations on leases
Remaining six months of 2015	14.9
2016	29.3
2017	29.2
2018	29.2
2019	28.8
Thereafter	170.2
Total	301.6
Future contractual minimum rental revenues on leases
Remaining six months of 2015	25.9
2016	46.2
2017	37.9
2018	28.5
2019	19.4
Thereafter	32.9
Total	$ 190.8