v3.7.0.1
Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Classes of Property, Plant and Equipment

The classes of property, plant and equipment as of December 31 are summarized as follows ($ in millions):

 

     2016      2015  

Land and improvements

   $ 63.5      $ 66.0  

Buildings and leasehold improvements

     340.8        344.8  

Machinery and equipment

     1,147.5        1,080.8  
  

 

 

    

 

 

 

Gross property, plant and equipment

     1,551.8        1,491.6  

Less: accumulated depreciation

     (1,004.2      (976.8
  

 

 

    

 

 

 

Property, plant and equipment, net

   $ 547.6      $ 514.8