CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income (loss)	$ (3.0)	$ (171.1)	$ 79.5
Other comprehensive income (loss), net of tax:
Currency translation	(14.5)	(77.0)	(105.8)
Interest rate swap	0.2	(1.8)
Marketable securities	4.0	(7.5)	(22.1)
Total other comprehensive loss, net	(30.9)	(74.4)	(202.0)
Comprehensive loss	(33.9)	(245.5)	(122.5)
Comprehensive income (loss) attributable to noncontrolling interest	6.9	(63.5)	(35.7)
Comprehensive loss attributable to Valhi stockholders	(40.8)	(182.0)	(86.8)
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	(19.7)	12.6	(71.6)
OPEB
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan	$ (0.9)	$ (0.7)	$ (2.5)