CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues and other income:
Net sales	$ 514.9	$ 406.8	$ 1,444.0	$ 1,158.9
Other income, net	4.5	6.2	19.8	28.3
Total revenues and other income	519.4	413.0	1,463.8	1,187.2
Costs and expenses:
Cost of sales	346.3	321.5	1,012.7	969.4
Selling, general and administrative	70.6	64.0	218.9	191.8
Contract related intangible asset impairment				5.1
Long-lived asset impairment			170.6
Loss on prepayment of debt, net	7.1		7.1
Interest	16.3	15.9	47.9	47.4
Total costs and expenses	440.3	401.4	1,457.2	1,213.7
Income (loss) before income taxes	79.1	11.6	6.6	(26.5)
Income tax expense (benefit)	15.2	2.6	(134.2)	(5.8)
Net income (loss)	63.9	9.0	140.8	(20.7)
Noncontrolling interest in net income of subsidiaries	18.0	6.0	73.4	4.3
Net income (loss) attributable to Valhi stockholders	$ 45.9	$ 3.0	$ 67.4	$ (25.0)
Amounts attributable to Valhi stockholders:
Basic and diluted net income (loss) per share	$ 0.13	$ 0.01	$ 0.20	$ (0.07)
Cash dividends per share	$ 0.02	$ 0.02	$ 0.06	$ 0.06
Basic and diluted weighted average shares outstanding	342.0	342.0	342.0	342.0