Fair Value Accounting (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Manufacturing/ Corporate	Dec. 31, 2012 Manufacturing/ Corporate	Dec. 31, 2013 Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Recourse	Dec. 31, 2012 Recourse	Dec. 31, 2013 Recourse Manufacturing/ Corporate	Dec. 31, 2012 Recourse Manufacturing/ Corporate	Dec. 31, 2013 Recourse Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Recourse Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Recourse Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Recourse Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2009 Recourse Capital lease obligations	Dec. 31, 2009 Recourse Capital lease obligations Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value	Dec. 31, 2012 Carrying Value	Dec. 31, 2013 Carrying Value Recourse	Dec. 31, 2012 Carrying Value Recourse	Dec. 31, 2013 Carrying Value Recourse Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Recourse Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Recourse Capital lease obligations Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Recourse Capital lease obligations Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Recourse Term loan Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Recourse Term loan Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse 2006 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse 2006 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse Promissory notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse Promissory notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse 2009 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse 2009 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse 2010 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse 2010 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse TILC warehouse facility Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse TILC warehouse facility Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse TRL 2012 secured railcar equipment notes - RIV 2013 Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse TRL 2012 secured railcar equipment notes - RIV 2013 Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse TRIP Holdings senior secured notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse TRIP Holdings senior secured notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Carrying Value Non-recourse TRIP Master Funding secured railcar equipment notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Carrying Value Non-recourse TRIP Master Funding secured railcar equipment notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value	Dec. 31, 2012 Estimated Fair Value	Dec. 31, 2013 Estimated Fair Value Recourse	Dec. 31, 2012 Estimated Fair Value Recourse	Dec. 31, 2013 Estimated Fair Value Recourse Manufacturing/ Corporate	Dec. 31, 2012 Estimated Fair Value Recourse Manufacturing/ Corporate	Dec. 31, 2013 Estimated Fair Value Recourse Capital lease obligations Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Recourse Capital lease obligations Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Recourse Term loan Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Recourse Term loan Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse 2006 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse 2006 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse Promissory notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse Promissory notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse 2009 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse 2009 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse 2010 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse 2010 secured railcar equipment notes Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse TILC warehouse facility Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse TILC warehouse facility Wholly-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse TRL 2012 secured railcar equipment notes - RIV 2013 Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse TRL 2012 secured railcar equipment notes - RIV 2013 Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse TRIP Holdings senior secured notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse TRIP Holdings senior secured notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2013 Estimated Fair Value Non-recourse TRIP Master Funding secured railcar equipment notes Partially-owned subsidiaries Railcar Leasing and Management Services Group	Dec. 31, 2012 Estimated Fair Value Non-recourse TRIP Master Funding secured railcar equipment notes Partially-owned subsidiaries Railcar Leasing and Management Services Group
Carrying amounts and estimated fair values of long-term debt
Convertible subordinated notes																																																							$ 593.4	$ 506.6
Less: unamortized discount	(74.1)	(87.5)							(74.1)	(87.5)	(74.1)	(87.5)	0	0	0	0
Capital lease obligations																	56.6	56.6							42.2	45.8																															42.2	45.8
Term loan																											0	48.6															152.0	173.6					756.8	797.7									0	53.3											152.0	173.6					819.8	952.0
Other																																																							0.9	1.2
Notes payable	1,314.7	1,404.2																															1,256.1	1,192.7	240.7	255.8	396.1	424.1	199.0	209.2	326.9	341.5			499.3	333.8																	259.2	292.0	389.6	414.6	229.5	260.4	342.7	387.2			483.4	321.7
TRIP Holdings senior secured notes																																															0	61.2																											0	62.5
Total debt	$ 2,989.8	$ 3,055.0	$ 376.8	$ 363.7	$ 1,356.9	$ 1,498.6	$ 1,256.1	$ 1,192.7	$ 419.0	$ 458.1	$ 376.8	$ 363.7	$ 42.2	$ 94.4	$ 0	$ 0			$ 2,989.8	$ 3,055.0	$ 419.0	$ 458.1	$ 42.2	$ 94.4					$ 2,570.8	$ 2,596.9	$ 1,314.7	$ 1,404.2																			$ 3,312.7	$ 3,470.9	$ 636.5	$ 606.9							$ 2,676.2	$ 2,864.0