Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2011 Y
Railcars [Member]
Estimated lives of useful depreciable assets
Estimated lives of useful depreciable assets, minimum	30
Estimated lives of useful depreciable assets, maximum	38
Locomotives [Member]
Estimated lives of useful depreciable assets
Estimated lives of useful depreciable assets, minimum	12
Estimated lives of useful depreciable assets, maximum	20
Buildings [Member]
Estimated lives of useful depreciable assets
Estimated lives of useful depreciable assets, minimum	40
Estimated lives of useful depreciable assets, maximum	50
Leasehold Improvements [Member]
Estimated lives of useful depreciable assets
Estimated lives of useful depreciable assets, minimum	5
Estimated lives of useful depreciable assets, maximum	15
Marine vessels [Member]
Estimated lives of useful depreciable assets
Estimated lives of useful depreciable assets, minimum	30
Estimated lives of useful depreciable assets, maximum	65
Industrial Equipment [Member]
Estimated lives of useful depreciable assets
Estimated lives of useful depreciable assets, minimum	5
Estimated lives of useful depreciable assets, maximum	30