Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Components of Inventories

DECEMBER 31	2017			2016			2015
Raw material	$	423.0		$	378.2		$	339.9
Work in progress		285.2			256.7			243.4
Finished products		258.0			240.0			217.9
Inventories	$	966.2		$	874.9		$	801.2
Inventory reserve at beginning of year	$	(101.5	)	$	(89.8	)	$	(83.3	)
Reversal of reserve		9.4			3.9			4.3
Addition to reserve		(12.8	)		(26.5	)		(22.2	)
Write-off against reserve		6.6			8.1			5.0
Translation difference		(8.8	)		2.8			6.4
Inventory reserve at end of year	$	(107.1	)	$	(101.5	)	$	(89.8	)
Total inventories, net of reserve	$	859.1		$	773.4		$	711.4