Railcar Leasing and Management Services Group (Details 3) (Railcar Leasing and Management Services Group, USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Future contractual minimum rental revenues on leases
2014	$ 425.2
2015	359.8
2016	297.0
2017	232.6
2018	161.4
Thereafter	274.2
Total	1,750.2
Operating leases with the Trusts
Future contractual minimum lease obligations on leases
2014	44.7
2015	43.0
2016	40.1
2017	41.9
2018	45.3
Thereafter	253.6
Total	468.6
Future contractual minimum rental revenues on leases
2014	62.7
2015	49.0
2016	38.3
2017	28.8
2018	18.5
Thereafter	35.5
Total	$ 232.8