Accounts Payable and Accrued Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts payable:
Accounts payable	$ 133.2	$ 169.6
Current accrued liabilities:
Employee benefits	36.1	38.5
Deferred income	36.9	5.4
Accrued litigation settlement	35.0
Accrued sales discounts and rebates	16.7	14.9
Environmental costs	9.1	7.6	8.6
Reserve for uncertain tax positions	3.1	3.0
Other	51.3	42.8
Total	188.2	112.2
Noncurrent accrued liabilities:
Reserve for uncertain tax positions	49.8	29.4
Asset retirement obligations	25.6	23.8
Employee benefits	12.2	11.3
Insurance claims and expenses	9.5	9.7
Deferred payment obligation	8.2
Deferred income	1.3	1.0
Other	3.6	3.1
Total	110.2	78.3
Kronos Worldwide, Inc.
Accounts payable:
Accounts payable	124.0	161.3
CompX
Accounts payable:
Accounts payable	1.5	2.8
WCS
Accounts payable:
Accounts payable	0.4	0.9
Other
Accounts payable:
Accounts payable	$ 7.3	$ 4.6