CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues and other income:
Net sales	$ 2,104.8	$ 1,921.7	$ 2,222.5
Other income, net	61.8	55.4	43.7
Total revenues and other income	2,166.6	1,977.1	2,266.2
Cost and other expense (income):
Cost of sales	1,680.3	1,676.5	1,732.1
Selling, general and administrative	256.2	277.4	304.0
Gain on remeasurement of investment in TiO2 manufacturing joint venture	(64.5)
Other components of net periodic pension and OPEB expense	2.6	11.8	13.9
Water system fixed asset impairment			16.4
Interest	49.9	28.3	27.9
Other	(2.1)	2.6	2.0
Total costs and other expense	1,922.4	1,996.6	2,096.3
Income (loss) before income taxes	244.2	(19.5)	169.9
Income tax expense (benefit)	82.9	(24.6)	36.8
Net income	161.3	5.1	133.1
Noncontrolling interest in net income of subsidiaries	53.3	15.0	45.9
Net income (loss) attributable to Valhi stockholders	$ 108.0	$ (9.9)	$ 87.2
Amounts attributable to Valhi stockholders:
Basic net income (loss) per share (in dollars per share)	$ 3.79	$ (0.35)	$ 3.06
Diluted net income (loss) per share (in dollars per share)	$ 3.79	$ (0.35)	$ 3.06
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