Inventories (Tables)

12 Months Ended

Dec. 31, 2011

Inventories

Inventories

	2011		2010
Raw materials	$	175.5	$	143.7
Work-in-process		169.4		174.8
Finished goods		175.3		143.9
Demonstration units		56.0		48.6
Inventories	$	576.2	$	511.0