Property, Plant And Equipment

12 Months Ended

Dec. 31, 2017

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):

	2017			2016
Land and improvements	$	155.6		$	150.5
Buildings	1,009.5			880.9
Machinery and equipment	2,239.5			1,953.9
Customer-leased instruments	1,569.4			1,332.0
Gross property, plant and equipment	4,974.0			4,317.3
Less: accumulated depreciation	(2,519.4		)	(1,963.3		)
Property, plant and equipment, net	$	2,454.6		$	2,354.0