CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income (loss)	$ 4.6	$ (48.2)
Other comprehensive income (loss), net of tax:
Currency translation	(2.7)	(28.1)
Marketable securities	(17.1)	6.4
Total other comprehensive loss, net	(18.1)	(19.2)
Comprehensive loss	(13.5)	(67.4)
Comprehensive loss attributable to noncontrolling interest	(12.7)	(7.7)
Comprehensive loss attributable to Valhi stockholders	(0.8)	(59.7)
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	2.1	2.7
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.4)	$ (0.2)