Commitments and Contingencies - Additional Information (Detail) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended	12 Months Ended		1 Months Ended		12 Months Ended
	May 08, 2012 USD ($)	Jun. 30, 2010 USD ($)	Dec. 31, 2013 BRL	Dec. 31, 2013 USD ($)	Nov. 30, 2011 Court-Imposed Interest, Fees or Inflation Adjustments Maximum USD ($)	Nov. 30, 2011 Court-Imposed Interest, Fees or Inflation Adjustments Maximum BRL	Dec. 31, 2013 Arizona Department Of Environmental Quality USD ($)	Dec. 31, 2013 Standby Letters Of Credit USD ($)
Loss Contingencies [Line Items]
Damages asserted by BK			20.8		$ 60.0		$ 0.2
Total ordered damages granted to Bk						26.7
Amount of remediation plan for the RID portion of the Superfund Site approved by ADEQ		100
Walker acquisition, Purchase price	377.0
Business Acquisition Outstanding claims for unpaid benefits owed By Seller	2.9
Loss contingency damages awarded value exchange rate differance					11.4
Loss Contingency, Estimate of Possible Loss							0.7
Letters of credit outstanding amount								8.9
Purchase Obligation				$ 32.8