Long-Term Debt - Note Payable to Contran - Additional Information (Detail) (Kronos Worldwide, Inc., Contran, USD $)	1 Months Ended	12 Months Ended			1 Months Ended
	Feb. 28, 2013	Dec. 31, 2013	Dec. 31, 2013 Libor Loans	Dec. 31, 2013 Base Rate Loans	Feb. 28, 2014 Subsequent Event New Term Loan
Debt Instrument [Line Items]
Quarterly principal repayments		$ 5,000,000			$ 170,000,000
Term loan maturity date	Jun. 30, 2018
Interest rate terms			(with LIBOR no less than 1%) plus 5.125%,	rate (as defined in the agreement) plus 4.125%.
Debt instrument, Variable rate spread			5.125%	4.125%
Percentage of average interest rate, during period		7.375%
Percentage of average interest rate		7.375%
Borrowings under credit facility during the period	190,000,000
Repayment of credit facility	$ 20,000,000