CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net income (loss)	$ 21.8	$ (22.0)
Other comprehensive income (loss), net of tax:
Currency translation	7.5	11.9
Interest rate swap	0.5	(2.3)
Marketable securities	(0.3)	(0.3)
Total other comprehensive income (loss), net	10.3	11.6
Comprehensive income (loss)	32.1	(10.4)
Comprehensive income (loss) attributable to noncontrolling interest	11.8	0.5
Comprehensive income (loss) attributable to Valhi stockholders	20.3	(10.9)
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	2.8	2.6
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.2)	$ (0.3)