Restructuring and Other - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended
	Jun. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012 Phosphorous Flame Retardant Business Exit	Sep. 30, 2012 Phosphorous Flame Retardant Business Exit	Sep. 30, 2012 Settlement of Litigation
Restructuring And Other [Line Items]
Restructuring charges				$ 94,700,000	$ 94,700,000
Restructuring charges, net of tax				73,600,000	73,600,000
Phosphorous flame retardants business exit, write off of net asset values					57,000,000
Write-offs of foreign currency translation adjustments of phosphorous flame retardants business					12,000,000
Severance costs		0			13,000,000
Site Remediation Costs	8,700,000				9,000,000
Other estimated exit costs of phosphorous flame retardants business					4,000,000
Gain of settlement of litigation						8,100,000
Gain of settlement of litigation, after income taxes						5,100,000
Estimated reimbursement of related legal fees						900,000
Charitable contribution			8,000,000
Charitable contribution, after income taxes			$ 5,100,000