Restructuring Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Accrued severance	$ 9.2	$ 9.2
Cost of sales [Member]
Severance and other restructuring cost	6.4	6.4
Selling, general and administrative expenses [Member]
Severance and other restructuring cost	10.0	10.0
Research and development [Member]
Severance and other restructuring cost	0.9	0.9
Americas [Member]
Recognized severance costs	6.7	6.7
Other Restructuring Costs	0.8	0.8
EMEA [Member]
Recognized severance costs	3.4	3.4
Other Restructuring Costs	5.2	5.2
Asia Pacific [Member]
Recognized severance costs	1.1	1.1
Other Restructuring Costs	$ 0.2	$ 0.2