Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended			36 Months Ended	12 Months Ended
	Dec. 31, 2013 Vendor LegalMatter	Dec. 31, 2012 LegalMatter	Dec. 31, 2011 LegalMatter	Dec. 31, 2010 LegalMatter	Dec. 31, 2013 Uninsured Cumulative Trauma	Dec. 31, 2012 Uninsured Cumulative Trauma	Dec. 31, 2011 Uninsured Cumulative Trauma	Dec. 31, 2013 Cumulative Trauma	Dec. 31, 2012 Single Incident	Dec. 31, 2011 Single Incident	Dec. 31, 2013 Single Incident
Loss Contingencies [Line Items]
Reserves for product liability claims									$ 4.4		$ 4.0
Product Liability Expense					1.7	2.1	1.1	104.2	0.7	1.5
Number of lawsuits	2,840	2,609	2,321	1,900
Years of Activity	5 years
Number of insurance carriers	20
Insurance receivables	$ 124.8	$ 130.0	$ 112.1	$ 89.0