Accounts and Other Receivables, Net (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Trade accounts receivable:
VAT and other receivables	$ 25.0	$ 22.2
Refundable income taxes	2.8	2.1
Receivable from affiliates - LPC	20.0	29.6
Allowance for doubtful accounts	(1.6)	(1.7)
Total	457.2	316.0
Kronos International [Member]
Trade accounts receivable:
Accounts receivable	391.7	247.2
CompX [Member]
Trade accounts receivable:
Accounts receivable	17.8	14.6
Other [Member]
Trade accounts receivable:
Accounts receivable	$ 1.5	$ 2.0