Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	60 Months Ended
	Mar. 31, 2013 Patents	Dec. 31, 2012	Mar. 01, 2013	Jun. 10, 2011
Commitments And Contingencies Disclosure [Abstract]
Certain claims selling, general and administrative, net		$ 403.2
Compensatory damages awarded	27.6
Percentage of fault apportioned to plaintiffs	30.00%
Percentage of fault apportioned to company	34.00%
Percentage of fault apportioned to unrelated third party	36.00%
Verdict in full and entered judgment				20.3
Compensatory Damages Vacated			27.6
Monetary damages for lost profits	70.0
Number of patents infringed	3
Estimated charges	$ 70.0