Railcar Leasing and Management Services Group (Details) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Consolidating financial information
Cash, cash equivalents, and short-term marketable securities	$ 299.1	[1]	$ 512.0
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
Restricted cash	205.3	[1]	207.1
Debt:
Recourse	560.9	[1]	561.4
Less: unamortized discount	(105.6)	[1]	(111.1)
Recourse Total	455.3	[1]	450.3
Non-recourse	2,431.3	[1]	2,457.4
Total debt	2,886.6	[1]	2,907.7
Leasing Group [Member]
Consolidating financial information
Property, plant, and equipment, net	2,243.7
Wholly Owned Subsidiaries [Member]
Consolidating financial information
Cash, cash equivalents, and short-term marketable securities	2.6	[1]	3.8
Property, plant, and equipment, net	3,078.9	[1]	2,965.4
Net deferred profit on railcars sold to the Leasing group	(348.9)	[1]	(340.4)
Property, plant and equipment, total	2,730.0	[1]	2,625.0
Restricted cash	160.6	[1]	161.1
Debt:
Recourse	106.0	[1]	108.6
Less: unamortized discount	0	[1]	0
Recourse Total	106.0	[1]	108.6
Non-recourse	1,468.0	[1]	1,453.5
Total debt	1,574.0	[1]	1,562.1
TRIP Holdings [Member]
Consolidating financial information
Cash, cash equivalents, and short-term marketable securities	0	[1]	0
Property, plant, and equipment, net	1,166.6	[1]	1,191.8
Net deferred profit on railcars sold to the Leasing group	(192.4)	[1]	(196.2)
Property, plant and equipment, total	974.2	[1]	995.6
Restricted cash	44.7	[1]	46.0
Debt:
Recourse	0	[1]	0
Less: unamortized discount	0	[1]	0
Recourse Total	0	[1]	0
Non-recourse	963.3	[1]	1,003.9
Total debt	963.3	[1]	1,003.9
Manufacturing/Corporate Recourse [Member]
Consolidating financial information
Cash, cash equivalents, and short-term marketable securities	296.5	[1]	508.2
Property, plant, and equipment, net	482.2	[1]	491.4
Net deferred profit on railcars sold to the Leasing group	0	[1]	0
Property, plant and equipment, total	482.2	[1]	491.4
Restricted cash	0	[1]	0
Debt:
Recourse	454.9	[1]	452.8
Less: unamortized discount	(105.6)	[1]	(111.1)
Recourse Total	349.3	[1]	341.7
Non-recourse	0	[1]	0
Total debt	$ 349.3	[1]	$ 341.7

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