Derivative Instruments (Details Textual) (USD $) In Millions, unless otherwise specified			9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Designated as hedging instrument Expired hedges 2006 secured railcar equipment notes	Sep. 30, 2013 Designated as hedging instrument Expired hedges Promissory notes	Sep. 30, 2013 Designated as hedging instrument Expired hedges TRIP Holdings warehouse loan	Sep. 30, 2013 Designated as hedging instrument Open hedges Promissory notes	Sep. 30, 2013 Designated as hedging instrument Open hedges TRIP Master Funding secured railcar equipment notes	Jul. 31, 2011 Designated as hedging instrument Open hedges TRIP Master Funding secured railcar equipment notes	Sep. 30, 2013 Designated as hedging instrument Foreign exchange hedges
Derivative Instruments (Textual) [Abstract]
Notional amount			$ 200.0	$ 370.0	$ 788.5	$ 421.6	$ 70.0	$ 94.1
Changes in fair value of cash flow hedges which is being amortized to income (loss)			4.5	(24.5)
Expected effect during next twelve months					5.2
Remaining AOCL balance of foreign exchange hedges with quarterly maturities	$ 22.5	$ 34.8	$ (1.7)	$ 4.9	$ 13.5	$ 23.5	$ 1.2		$ 0