Property, Plant, and Equipment (Details) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Components of property, plant, and equipment
Less accumulated depreciation, including TRIP Holdings of $107.2 and 90.3	$ (1,152.3)	[1]	$ (1,090.2)
Property, plant, and equipment, net	4,727.7	[1]	4,648.6
Net deferred profit on railcars sold to the Leasing group	(541.3)	[1]	(536.6)
Property, plant and equipment, total	4,186.4	[1]	4,112.0
Land [Member] | Manufacturing/Corporate Recourse [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	40.2		40.9
Buildings and improvements [Member] | Manufacturing/Corporate Recourse [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	411.3		418.4
Machinery and other [Member] | Manufacturing/Corporate Recourse [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	716.1		699.7
Machinery and other [Member] | Leasing, Wholly owned subsidiaries [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	9.0		38.2
Construction in progress [Member] | Manufacturing/Corporate Recourse [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	17.0		9.7
Equipment on lease [Member] | Leasing, Wholly owned subsidiaries [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	3,412.6		3,249.8
Manufacturing/Corporate Recourse [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	1,184.6		1,168.7
Less accumulated depreciation, including TRIP Holdings of $107.2 and 90.3	(702.4)		(677.3)
Property, plant, and equipment, net	482.2		491.4
Leasing, Wholly owned subsidiaries [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	3,421.6		3,288.0
Less accumulated depreciation, including TRIP Holdings of $107.2 and 90.3	(342.7)		(322.6)
Property, plant, and equipment, net	3,078.9		2,965.4
Net deferred profit on railcars sold to the Leasing group	(348.9)		(340.4)
Leasing, TRIP Holdings [Member]
Components of property, plant, and equipment
Property, Plant and Equipment, Gross	1,273.8		1,282.1
Less accumulated depreciation, including TRIP Holdings of $107.2 and 90.3	(107.2)		(90.3)
Property, plant, and equipment, net	1,166.6		1,191.8
Net deferred profit on railcars sold to the Leasing group	$ (192.4)		$ (196.2)

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