XML 101 R14.htm IDEA: XBRL DOCUMENT v3.19.3
Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
The classes of property, plant and equipment as of December 31 are summarized as follows ($ in millions):
 
2018
 
2017
Land and improvements
$
24.7

 
$
25.3

Buildings
152.4

 
149.8

Machinery and equipment
459.7

 
410.2

Gross property, plant and equipment
636.8

 
585.3

Less: accumulated depreciation
(375.2
)
 
(354.1
)
Property, plant and equipment, net
$
261.6

 
$
231.2