Leases (Details Textual)
$ in Millions

12 Months Ended

Dec. 31, 2015

USD ($)

Dec. 31, 2014

USD ($)

Car

Dec. 31, 2013

USD ($)

Operating Leased Assets [Line Items]

Schedule of Capital Leased Assets [Table Text Block]

The following table shows assets we financed with capital lease obligations as of December 31 (in millions):

	2015			2014
Railcars	$	17.8		$	—
Marine vessels	84.5			83.1
Less: allowance for depreciation	(79.8		)	(75.3		)
	$	22.5		$	7.8

Operating Leases, Rent Expense

$ 91.2

$ 112.9

$ 134.0

Leases (Textual) [Abstract]

Rental income from usage rents

91.2

$ 83.9

$ 21.3

Number of boxcars acquired | Car

18,500

Deferred initial direct costs of direct financial leases

$ 0.1

$ 0.3

Railroad Transportation Equipment [Member]

Operating Leased Assets [Line Items]

Schedule of Capital Leased Assets [Table Text Block]

19,000

Marine vessels [Member]

Operating Leased Assets [Line Items]

Schedule of Capital Leased Assets [Table Text Block]

1