Fair Value Accounting (Details 1) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Recourse:
Less: unamortized discount	$ (102.7)	[1]	$ (111.1)
Convertible subordinated notes, total	347.3		338.9
Term loan	55.4		57.4
Other	4.4		2.8
Total Recourse	456.3	[1]	450.3
Non-recourse:
Total Non-recourse	2,515.6		2,457.4
Total debt	2,971.9	[1]	2,907.7
Carrying Value [Member]
Recourse:
Convertible subordinated notes	450.0		450.0
Less: unamortized discount	(102.7)		(111.1)
Capital lease obligations	49.2		51.2
Total Recourse	456.3		450.3
Non-recourse:
2006 secured railcar equipment notes	271.7		283.2
Promissory notes	471.5		493.8
2009 secured railcar equipment notes	220.9		229.2
2010 secured railcar equipment notes	357.5		367.1
TILC warehouse facility	280.7		80.2
TRIP Holdings senior secured notes	63.0		0
TRIP Master Funding secured railcar equipment notes	850.3		0
TRIP Holdings warehouse loan	0		1,003.9
Estimated Fair Value [Member]
Recourse:
Convertible subordinated notes	416.3		448.3
Less: unamortized discount	0		0
Convertible subordinated notes, total	0		0
Capital lease obligations	49.2		51.2
Term loan	56.4		54.2
Other	4.4		2.8
Total Recourse	526.3		556.5
Non-recourse:
2006 secured railcar equipment notes	281.2		302.8
Promissory notes	456.4		482.2
2009 secured railcar equipment notes	231.9		256.1
2010 secured railcar equipment notes	335.8		345.5
TILC warehouse facility	280.7		80.2
TRIP Holdings senior secured notes	63.0		0
TRIP Master Funding secured railcar equipment notes	844.9		0
TRIP Holdings warehouse loan	0		994.0
Total Non-recourse	2,493.9		2,460.8
Total debt	$ 3,020.2		$ 3,017.3

[1] Unaudited