CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues and other income:
Net sales	$ 1,849.7	$ 1,897.5	$ 1,820.1
Other income, net	28.4	40.9	69.2
Total revenues and other income	1,878.1	1,938.4	1,889.3
Cost and expenses:
Cost of sales	1,437.6	1,462.9	1,210.9
Selling, general and administrative	283.6	294.2	310.0
Litigation settlement expense, net		19.3	62.0
Other components of net periodic pension expense	20.1	16.5	14.5
Interest	36.2	40.8	55.7
Total costs and expenses	1,777.5	1,833.7	1,653.1
Income from continuing operations before income taxes	100.6	104.7	236.2
Income tax expense (benefit)	15.9	26.5	(30.7)
Net income from continuing operations	84.7	78.2	266.9
Income from discontinued operations, net of tax	4.3		34.1
Net income	89.0	78.2	301.0
Noncontrolling interest in net income of subsidiaries	33.8	29.0	38.8
Net income attributable to Valhi stockholders	55.2	49.2	262.2
Amounts attributable to Valhi stockholders:
Income from continuing operations	50.9	49.2	228.1
Income from discontinued operations	4.3		34.1
Net income attributable to Valhi stockholders	$ 55.2	$ 49.2	$ 262.2
Basic and diluted net income per share:
Income from continuing operations	$ 1.79	$ 1.73	$ 8.00
Income from discontinued operations	0.15		1.20
Net income per basic and diluted share	$ 1.94	$ 1.73	$ 9.20
Basic and diluted weighted average shares outstanding	28.5	28.5	28.5