v2.4.0.6
Business Acquisitions and Restructuring Charges (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Area
region
Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]    
Number of regions, prior to restructuring (in regions) 4  
Number of regions, subsequent to restructuring (in regions) 3  
Number of ares, prior to restructuring (in areas) 28  
Number of areas, subsequent to restructuring (in areas) 20  
Restructuring charges $ 4.9 $ 0
Cash payments for restructuring charges 7.2 68.1
Accrued severence and other employee termination benefits and exit costs 10.0  
Employee Severance [Member]
   
Restructuring Cost and Reserve [Line Items]    
Accrued severence and other employee termination benefits and exit costs $ 6.7