Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Face (par) amount of debt instrument at time of issuance.

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Contractual rate at which a foreign currency can be purchased or sold.

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Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps.

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Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

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Aggregate impact of foreign currency derivatives on earnings for the period. Includes impact of foreign currency cash flow hedge ineffectiveness and the ineffectiveness of fair value hedging derivatives and full change in fair value of the foreign currency derivatives not designated as hedging instruments.

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Fair value portion of notes payable.

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Notional amount of currency the company is contractually obligated to exchange per month.

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Foreign Currency Contract Asset Liability Net Fair Value Disclosure

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Fair Value Measurements and Financial Instruments - Additional Information (Detail)				9 Months Ended
	Sep. 30, 2013 USD ($)	Dec. 31, 2012 USD ($)	Sep. 30, 2013 Amalgamated Sugar Company LLC USD ($)	Sep. 30, 2013 Chemicals Forward Contracts USD ($)	Sep. 30, 2013 Chemicals Canadian Dollar Forward Contracts USD ($)	Sep. 30, 2013 Chemicals Canadian Dollar Forward Contracts Minimum	Sep. 30, 2013 Chemicals Canadian Dollar Forward Contracts Maximum	Sep. 30, 2013 Chemicals Norwegian Kroner Forward Contracts United States Dollar USD ($)	Sep. 30, 2013 Chemicals Norwegian Kroner Forward Contracts United States Dollar Minimum	Sep. 30, 2013 Chemicals Norwegian Kroner Forward Contracts United States Dollar Maximum	Sep. 30, 2013 Chemicals Norwegian Kroner Forward Contracts Euro EUR (€)	Sep. 30, 2013 Chemicals Norwegian Kroner Forward Contracts Euro Minimum EUR (€)	Sep. 30, 2013 Chemicals Norwegian Kroner Forward Contracts Euro Maximum EUR (€)	Dec. 31, 2012 Kronos Worldwide, Inc. Term Loan Per Thousand Dollar Principal Amount USD ($)
Financial Instrument At Fair Value [Line Items]
Notional amount currency forward contract					$ 45,000,000			$ 25,000,000			€ 16,000,000
Exchange floor rate						1.02	1.06		5.84	6.14		7.55	8.07
Maturity rate of derivative					3,000,000			5,000,000				2,000,000	5,000,000
Estimated fair value of currency forward contracts	(500,000)	1,800,000		500,000
Accounts and other receivables				800,000
Accounts payable and accrued liabilities				1,300,000
Currency transaction loss				500,000
Estimated market price of the notes														1,017.5
Principal amount of debt instrument														1,000
Redemption price of investment			$ 250,000,000