Property, Plant and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

NOTE 5. PROPERTY, PLANT AND EQUIPMENT

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

	2017			2016
Land and improvements	$	67.8		$	63.5
Buildings and leasehold improvements	389.7			340.8
Machinery and equipment	1,341.8			1,147.5
Gross property, plant and equipment	1,799.3			1,551.8
Less: accumulated depreciation	(1,086.8		)	(1,004.2		)
Property, plant and equipment, net	$	712.5		$	547.6

Total depreciation expense was $109 million, $91 million and $88 million for the years ended December 31, 2017, 2016 and 2015, respectively. Capital expenditures totaled $136 million, $130 million and $120 million for the years ended December 31, 2017, 2016 and 2015, respectively. There was no capitalized interest related to capitalized expenditures in any period.