Fixed Assets, Net (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Depreciation	$ 16.6	$ 17.2	$ 14.4
Deferred software development cost	2.0	5.7
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges		40.3
Land [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges		$ 0.9