CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues and other income:
Net sales	$ 1,921.7	$ 2,222.5	$ 2,296.4
Other income, net	55.4	43.7	39.0
Total revenues and other income	1,977.1	2,266.2	2,335.4
Cost and expenses:
Cost of sales	1,676.5	1,732.1	1,716.2
Selling, general and administrative	277.4	304.0	311.9
Other components of net periodic pension and OPEB expense	11.8	13.9	17.0
Loss on sale of Basic Power Company (BPC)	2.6
Water system fixed asset impairment		16.4
Loss on deconsolidation of Basic Water Company (BWC)		(2.0)
Interest	28.3	27.9	32.5
Total costs and expenses	1,996.6	2,096.3	2,077.6
Income (loss) before income taxes	(19.5)	169.9	257.8
Income tax expense (benefit)	(22.4)	33.8	60.1
Net income	2.9	136.1	197.7
Noncontrolling interest in net income of subsidiaries	15.0	45.9	70.5
Net income (loss) attributable to Valhi stockholders	$ (12.1)	$ 90.2	$ 127.2
Amounts attributable to Valhi stockholders:
Basic net income (loss) per share (in dollars per share)	$ (0.42)	$ 3.16	$ 4.46
Diluted net income (loss) per share (in dollars per share)	$ (0.42)	$ 3.16	$ 4.46
Weighted average shares outstanding - basic (in shares)	28.5	28.5	28.5
Weighted average shares outstanding - diluted (in shares)	28.5	28.5	28.5