CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income	$ 22.8	$ 13.6
Depreciation and amortization	15.4	12.5
Benefit plan expense less than cash funding	(2.7)	(2.5)
Deferred income taxes	1.8	(0.1)
Distributions from TiO2 manufacturing joint venture, net		2.3
Other, net	1.7	2.0
Change in assets and liabilities:
Accounts and other receivables, net	(51.0)	(59.5)
Inventories, net	(28.0)	78.7
Land held for development, net	(0.5)	(0.7)
Accounts payable and accrued liabilities	(73.4)	(125.3)
Accrued environmental remediation and related costs	(56.4)
Income taxes	2.5	2.8
Accounts with affiliates	5.2	15.3
Other, net	6.7	12.1
Net cash used in operating activities	(155.9)	(48.8)
Cash flows from investing activities:
Capital expenditures	(12.8)	(5.0)
Purchases of marketable securities		(1.0)
Proceeds from disposal of marketable securities	0.5	25.5
Net cash provided by (used in) investing activities	(12.3)	19.5
Cash flows from financing activities:
Borrowings	145.0
Payments	(112.1)
Kronos term loan from Contran		53.7
Payments on long-term debt	(5.4)	(73.2)
Valhi cash dividends paid	(2.3)	(2.3)
Distributions to noncontrolling interest subsidiaries	(5.3)	(5.3)
Deferred financing fees		(4.9)
Net cash provided by (used in) financing activities	19.9	(32.0)
Cash, cash equivalents and restricted cash and cash equivalents - net change from:
Operating, investing and financing activities	(148.3)	(61.3)
Effect of exchange rates on cash	1.2	(1.1)
Balance at beginning of period	378.6	462.0
Balance at end of period	231.5	399.6
Cash paid for:
Interest, net of amounts capitalized	21.1	9.1
Income taxes, net	2.2	0.8
Noncash investing activities:
Change in accruals for capital expenditures	$ 2.8	$ 0.8