CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues and other income:
Net sales	$ 507.1	$ 634.6	$ 999.8	$ 1,263.6
Other income, net	10.5	15.0	23.6	15.0
Total revenues and other income	517.6	649.6	1,023.4	1,278.6
Cost and expenses:
Cost of sales	441.6	487.9	880.2	946.2
Selling, general and administrative	68.4	79.0	137.2	156.2
Fixed asset impairment		16.0		16.0
Other components of net periodic pension and OPEB expense	7.5	3.3	8.7	6.6
Interest	7.2	7.0	14.2	13.9
Total costs and expenses	524.7	593.2	1,040.3	1,138.9
Income (loss) before income taxes	(7.1)	56.4	(16.9)	139.7
Income tax expense (benefit)	(4.9)	14.0	(11.0)	33.9
Net income (loss)	(2.2)	42.4	(5.9)	105.8
Noncontrolling interest in net income of subsidiaries	2.9	14.4	4.1	32.4
Net income (loss) attributable to Valhi stockholders	$ (5.1)	$ 28.0	$ (10.0)	$ 73.4
Amounts attributable to Valhi stockholders:
Basic, net income (loss) per share	$ (0.18)	$ 0.98	$ (0.35)	$ 2.57
Diluted, net income (loss) per share	$ (0.18)	$ 0.98	$ (0.35)	$ 2.57
Weighted average shares outstanding - basic	28.5	28.5	28.5	28.5
Weighted average shares outstanding - diluted	28.5	28.5	28.5	28.5