Reorganization Costs (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			22 Months Ended	12 Months Ended		34 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 International Commercial Hub	Dec. 31, 2011 International Commercial Hub Employee involuntary termination benefits	Dec. 31, 2010 International Commercial Hub Other reorganization costs	Dec. 31, 2011 Owings Mills	Dec. 31, 2011 Owings Mills Employee involuntary termination benefits	Dec. 31, 2010 Owings Mills Other reorganization costs
Reorganization Costs
Reorganization costs	$ 0	$ 24.3	$ 34.3		$ 12.5	$ 21.3		$ 11.8	$ 13.0
Reorganization cost incurred to date				$ 33.8			$ 37.5