Leases (Details Textual) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

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):

	2016			2015
Railcars	$	18.9		$	17.8
Marine vessels	62.1			84.5
Less: allowance for depreciation	(61.6		)	(79.8		)
	$	19.4		$	22.5

Operating Leases, Rent Expense

$ 77.6

$ 91.2

$ 112.9

Leases (Textual) [Abstract]

Rental income from usage rents

$ 74.5

$ 91.2

$ 83.9

Railroad Transportation Equipment [Member]

Operating Leased Assets [Line Items]

Schedule of Capital Leased Assets [Table Text Block]

13,400

Marine vessels [Member]

Operating Leased Assets [Line Items]

Schedule of Capital Leased Assets [Table Text Block]

two