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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended		3 Months Ended		12 Months Ended		12 Months Ended		4 Months Ended	12 Months Ended			72 Months Ended		12 Months Ended	36 Months Ended		72 Months Ended	12 Months Ended	0 Months Ended	1 Months Ended		12 Months Ended			12 Months Ended	7 Months Ended	10 Months Ended	12 Months Ended		1 Months Ended	4 Months Ended
	Nov. 30, 2012 Plaintiff	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Minimum	Mar. 31, 2014 Maximum	Dec. 31, 2013 Circuit Court Of Cook County plaintiff	Jan. 04, 2011 Circuit Court Of Cook County Plaintiff	Dec. 31, 2010 Court of Common Pleas, Philadelphia County	Jan. 04, 2011 Court of Common Pleas, Philadelphia County Plaintiff	Apr. 22, 2011 Settlement Agreement Plaintiff	Dec. 31, 2013 Settlement Agreement	Apr. 22, 2011 Settlement Agreement	Apr. 29, 2011 Settlement Agreement	Dec. 31, 2004 1999-2004 Circuit Court Of Cook County plaintiff case	Dec. 31, 2009 2009 Circuit Court Of Cook County case	Dec. 31, 2008 2008 Circuit Court Of Cook County Plaintiff	Dec. 31, 2009 2007-2009 Court of Common Pleas, Philadelphia County Case Plaintiff	Dec. 31, 2009 2007-2009 Court of Common Pleas, Philadelphia County case	Dec. 31, 2004 Outside Chicago Firefighter Plaintiffs 1999-2004 Circuit Court Of Cook County plaintiff	Dec. 31, 2009 Pennsylvania Firefighter Plaintiffs 2009 Circuit Court Of Cook County plaintiff	Nov. 30, 2012 Chicago Firefighter Plaintiffs Plaintiff	Dec. 31, 2012 Chicago Firefighter Plaintiffs Plaintiff	Nov. 30, 2011 Chicago Firefighter Plaintiffs Plaintiff	Dec. 31, 2009 Chicago Firefighter Plaintiffs Minimum plaintiff	Dec. 31, 2009 Chicago Firefighter Plaintiffs Maximum Plaintiff	Dec. 31, 2009 Chicago Firefighter Plaintiffs 2009 Plaintiff	Dec. 31, 2009 Chicago Firefighter Plaintiffs 2009 Circuit Court Of Cook County Plaintiff	Oct. 31, 2012 Philadelphia Firefighter Plaintiffs Court of Common Pleas, Philadelphia County Plaintiff Case	Mar. 31, 2014 Philadelphia Firefighter Plaintiffs Court of Common Pleas, Philadelphia County case	Dec. 31, 2010 Philadelphia Firefighter Plaintiffs 2010 Court of Common Pleas, Philadelphia County Plaintiff	Dec. 31, 2010 Philadelphia Firefighter Plaintiffs 2010 Court of Common Pleas, Philadelphia County plaintiff	Feb. 28, 2014 Pittsburgh Firefighter Plaintiffs Court of Common Pleas, Philadelphia County Plaintiff	Jul. 31, 2013 Pittsburgh Firefighter Plaintiffs Allegheny County, Pennsylvania Plaintiff
Commitments Disclosure [Line Items]
Amount outstanding standby letters of credit		$ 45.0
Warranty maturity periods				1 year	10 years
Reserves related to environmental remediation		1.3	1.4
Number of additional cases filed by firefighters														33	6		71	71								40		20
Number of plaintiffs						74				1,069				2,443			71	71	1,800	299	3	3	8	9	40			20		9	9	61	246
Loss Contingency, Number of Cases Dismissed																													2
Number of cases of plaintiff's claims																27	3	3
Plaintiff's counsel later moved to reduce the number of plaintiff																											9
Claims settled amount											3.8																0.4
Number of plaintiffs cases dismissed	2
Damages maximum amount								0.1
Damages subsequently reduced, minimum amount								0.08
Number of claimants settled							308		1,125
Percentage of claimants agreed for settlement										95.02%		95.02%	93.00%
Percentage of claimants agreed for settlement as per settlement agreement													100.00%
Settlement Agreement payment made												(3.6)
Reimbursement		$ 0.1

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