Railcar Leasing and Management Services Group (Details 3) (USD $) In Millions	Jun. 30, 2011
Future contractual minimum rental revenues related to operating leases other than leases with the Trusts
Remaining six months of 2011	$ 178.2
2012	301.3
2013	223.8
2014	156.9
2015	120.2
Thereafter	268.4
Total	1,248.8
Future operating lease obligations of Trusts' railcar [Member]
Future operating lease obligations and future contractual minimum rental revenues related to these leases
Remaining six months of 2011	21.2
2012	44.5
2013	45.7
2014	44.9
2015	43.2
Thereafter	382.0
Total	581.5
Future Contractual Minimum Rental Revenues Of Trusts Railcar [Member]
Future contractual minimum rental revenues related to operating leases other than leases with the Trusts
Remaining six months of 2011	29.0
2012	47.3
2013	32.2
2014	18.6
2015	13.8
Thereafter	28.5
Total	169.4
Future Operating Lease Obligations [Member]
Future operating lease obligations and future contractual minimum rental revenues related to these leases
Remaining six months of 2011	2.7
2012	4.8
2013	4.5
2014	4.4
2015	4.4
Thereafter	13.9
Total	34.7
Future Contractual Minimum Rental Revenues [Member]
Future contractual minimum rental revenues related to operating leases other than leases with the Trusts
Remaining six months of 2011	2.4
2012	4.3
2013	3.9
2014	3.4
2015	2.7
Thereafter	7.0
Total	$ 23.7

Future operating lease obligations and future contractual minimum rental revenues related to these leases.

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