Reorganization Costs (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended						22 Months Ended	12 Months Ended	34 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Involuntary termination benefits	Dec. 31, 2011 Other reorganization costs	Dec. 31, 2011 International Commercial Hub	Dec. 31, 2011 International Commercial Hub	Dec. 31, 2011 Owings Mills	Dec. 31, 2011 Owings Mills
Restructuring Reserve [Roll Forward]
Opening liability at	$ 12.4			$ 10.1	$ 2.3
Amount charged to reorganization	24.3			12.8	11.5
Paid/Utilized	(27.9)			(14.2)	(13.7)
Closing liability at	8.8	12.4		8.7	0.1
Reorganization costs	24.3	34.3	12.7			12.5		11.8
Reorganization cost incurred to date							33.8		37.5
Accelerated depreciation of property, plant and equipment								$ 6.6