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Long-term debt - Revolving credit facility (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Long-term debt
Borrowings	$ 283.7	$ 306.3
Repayments	255.3	$ 280.9
Revolving credit facility	28.2
Global Revolver
Long-term debt
Maximum borrowing capacity	350.0
Borrowings	280.2
Repayments	$ 252.0
Average interest rate on outstanding borrowings	4.90%
Interest rate on the outstanding borrowings	5.30%
Availability borrowing	$ 261.0
Revolving credit facility	$ 28.2

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Organization and basis of presentation	6 Months Ended
Jun. 30, 2026
Organization and basis of presentation
Organization and basis of presentation	Note 1 - Organization and basis of presentation: Organization - At June 30, 2026 Valhi, Inc. (NYSE: VHI) held approximately 50% of our outstanding common stock and a wholly-owned subsidiary of NLI Holdings, Inc. (formerly NL Industries, Inc.) (NYSE: NL) held approximately 31% of our common stock. Valhi owned approximately 83% of NLI’s outstanding common stock and a wholly-owned subsidiary of Contran Corporation held approximately 91% of Valhi’s outstanding common stock. A majority of Contran’s outstanding voting stock is held directly by Lisa K. Simmons and by family stockholders (Thomas C. Connelly (the husband of Ms. Simmons’ late sister), a family-owned entity and various family trusts established for the benefit of Ms. Simmons, Mr. Connelly and their children) who are required to vote their shares of Contran voting stock in the same manner as Ms. Simmons. Such voting rights are personal to Ms. Simmons and last through April 22, 2030. The remainder of Contran’s outstanding voting stock is held by another trust (the “Family Trust”), which was established for the benefit of Ms. Simmons and her late sister and their children and for which a third-party financial institution serves as trustee. Consequently, at June 30, 2026, Ms. Simmons and the Family Trust may be deemed to control Contran, and therefore may be deemed to indirectly control the wholly-owned subsidiary of Contran, Valhi, NLI and us. Basis of presentation - The unaudited Condensed Consolidated Financial Statements contained in this Quarterly Report have been prepared on the same basis as the audited Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended December 31, 2025 that we filed with the Securities and Exchange Commission (“SEC”) on March 9, 2026 (“2025 Annual Report”). In our opinion, we have made all necessary adjustments (which include only normal recurring adjustments), in order to state fairly, in all material respects, our consolidated financial position, results of operations and cash flows as of the dates and for the periods presented. We have condensed the Consolidated Balance Sheet at December 31, 2025 contained in this Quarterly Report as compared to our audited Consolidated Financial Statements at that date, and we have omitted certain information and footnote disclosures (including those related to the Consolidated Balance Sheet at December 31, 2025) normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Our results of operations for the interim periods ended June 30, 2026 may not be indicative of our operating results for the full year. The Condensed Consolidated Financial Statements contained in this Quarterly Report should be read in conjunction with our 2025 Consolidated Financial Statements contained in our 2025 Annual Report. Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Kronos Worldwide, Inc. and its subsidiaries (NYSE: KRO) taken as a whole.

Organization and basis of presentation

6 Months Ended

Jun. 30, 2026

Organization and basis of presentation

Organization and basis of presentation

Note 1 - Organization and basis of presentation:

Organization - At June 30, 2026 Valhi, Inc. (NYSE: VHI) held approximately 50% of our outstanding common stock and a wholly-owned subsidiary of NLI Holdings, Inc. (formerly NL Industries, Inc.) (NYSE: NL) held approximately 31% of our common stock. Valhi owned approximately 83% of NLI’s outstanding common stock and a wholly-owned subsidiary of Contran Corporation held approximately 91% of Valhi’s outstanding common stock. A majority of Contran’s outstanding voting stock is held directly by Lisa K. Simmons and by family stockholders (Thomas C. Connelly (the husband of Ms. Simmons’ late sister), a family-owned entity and various family trusts established for the benefit of Ms. Simmons, Mr. Connelly and their children) who are required to vote their shares of Contran voting stock in the same manner as Ms. Simmons. Such voting rights are personal to Ms. Simmons and last through April 22, 2030. The remainder of Contran’s outstanding voting stock is held by another trust (the “Family Trust”), which was established for the benefit of Ms. Simmons and her late sister and their children and for which a third-party financial institution serves as trustee. Consequently, at June 30, 2026, Ms. Simmons and the Family Trust may be deemed to control Contran, and therefore may be deemed to indirectly control the wholly-owned subsidiary of Contran, Valhi, NLI and us.

Basis of presentation - The unaudited Condensed Consolidated Financial Statements contained in this Quarterly Report have been prepared on the same basis as the audited Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended December 31, 2025 that we filed with the Securities and Exchange Commission (“SEC”) on March 9, 2026 (“2025 Annual Report”). In our opinion, we have made all necessary adjustments (which include only normal recurring adjustments), in order to state fairly, in all material respects, our consolidated financial position, results of operations and cash flows as of the dates and for the periods presented. We have condensed the Consolidated Balance Sheet at December 31, 2025 contained in this Quarterly Report as compared to our audited Consolidated Financial Statements at that date, and we have omitted certain information and footnote disclosures (including those related to the Consolidated Balance Sheet at December 31, 2025) normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Our results of operations for the interim periods ended June 30, 2026 may not be indicative of our operating results for the full year. The Condensed Consolidated Financial Statements contained in this Quarterly Report should be read in conjunction with our 2025 Consolidated Financial Statements contained in our 2025 Annual Report.

Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Kronos Worldwide, Inc. and its subsidiaries (NYSE: KRO) taken as a whole.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Cash flows from operating activities:
Net income	$ 10.4	$ 8.9
Depreciation	31.2	29.0
Amortization of operating lease right-of-use assets	2.3	2.0
Deferred income taxes	6.1
Benefit plan expense less than cash funding	(0.4)	(4.5)
Marketable equity securities	(0.3)	1.0
Other, net	(0.3)	(2.8)
Change in assets and liabilities:
Accounts and other receivables, net	(111.7)	(21.5)
Inventories, net	120.6	20.5
Prepaid expenses	18.5	16.3
Accounts payable and accrued liabilities	(67.8)	(83.4)
Income taxes	(10.0)	(15.6)
Accounts with affiliates	5.5	(32.9)
Other, net	(2.1)	1.3
Net cash provided by (used in) operating activities	2.0	(81.7)
Cash flows from investing activities:
Cash flows from investing activities - capital expenditures	(26.3)	(23.2)
Cash flows from financing activities:
Borrowings	283.7	306.3
Payments	(255.3)	(280.9)
Dividends paid	(11.5)	(11.5)
Net cash provided by financing activities	16.9	13.9
Cash, cash equivalents and restricted cash - net change from:
Operating, investing and financing activities	(7.4)	(91.0)
Effect of currency exchange rate changes on cash	(0.6)	4.0
Balance at beginning of period	42.5	114.7
Balance at end of period	34.5	27.7
Cash paid for:
Interest, net of amount capitalized	28.7	22.4
Income taxes	17.8	50.1
Accrual for capital expenditures	$ 1.0	$ 3.4

Accounts payable and accrued liabilities - Components of Accounts Payable and Accrued Liabilities (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Accounts payable and accrued liabilities
Accounts payable	$ 172.5	$ 224.0
Accrued sales discounts and rebates	14.0	25.1
Employee benefits	26.3	26.0
Accrued severance costs	3.8	8.8
Operating lease liabilities	$ 3.9	$ 4.2
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total	Total
Other	$ 60.1	$ 65.0
Total	282.2	354.4
Related party \| Contran
Accounts payable and accrued liabilities
Payables to affiliates	$ 1.6	$ 1.3

Long-term debt

6 Months Ended

Jun. 30, 2026

Long-term debt

Long-term debt

Note 6 - Long-term debt:


		December 31,			June 30,
		2025			2026

		(In millions)
Kronos International, Inc. 9.50% Senior Secured Notes due 2029		$	503.7		$	487.7
Subordinated, Unsecured Term Loan from Contran			53.7			53.7
Revolving credit facility			-			28.2
Total debt			557.4			569.6
Less current maturities			-			-
Total long-term debt		$	557.4		$	569.6

9.50% Senior Secured Notes due 2029 - At June 30, 2026, the carrying value of the 9.50% Senior Secured Notes due 2029 (€426.174 million aggregate principal amount outstanding) is stated net of $8.0 million of unamortized premium and $5.7 million of unamortized debt issuance costs (at December 31, 2025 the amounts were $9.0 million and $6.9 million, respectively).

Revolving credit facility (the “Global Revolver”) - During the first six months of 2026, we borrowed $280.2 million and repaid $252.0 million under our $350 million Global Revolver. The average interest rate on outstanding borrowings under this facility for the six months ended June 30, 2026 was 4.9%. At June 30, 2026, $28.2 million was outstanding under the Global Revolver and the average interest rate on outstanding borrowings was 5.3%. At June 30, 2026 we had borrowing availability of approximately $261 million less any amounts outstanding under this facility.

Other - We are in compliance with all of our debt covenants at June 30, 2026.

Organization and basis of presentation (Policies)	6 Months Ended
Organization and basis of presentation (Policies)	Jun. 30, 2026
Organization and basis of presentation
Organization	Organization - At June 30, 2026 Valhi, Inc. (NYSE: VHI) held approximately 50% of our outstanding common stock and a wholly-owned subsidiary of NLI Holdings, Inc. (formerly NL Industries, Inc.) (NYSE: NL) held approximately 31% of our common stock. Valhi owned approximately 83% of NLI’s outstanding common stock and a wholly-owned subsidiary of Contran Corporation held approximately 91% of Valhi’s outstanding common stock. A majority of Contran’s outstanding voting stock is held directly by Lisa K. Simmons and by family stockholders (Thomas C. Connelly (the husband of Ms. Simmons’ late sister), a family-owned entity and various family trusts established for the benefit of Ms. Simmons, Mr. Connelly and their children) who are required to vote their shares of Contran voting stock in the same manner as Ms. Simmons. Such voting rights are personal to Ms. Simmons and last through April 22, 2030. The remainder of Contran’s outstanding voting stock is held by another trust (the “Family Trust”), which was established for the benefit of Ms. Simmons and her late sister and their children and for which a third-party financial institution serves as trustee. Consequently, at June 30, 2026, Ms. Simmons and the Family Trust may be deemed to control Contran, and therefore may be deemed to indirectly control the wholly-owned subsidiary of Contran, Valhi, NLI and us.
Basis of presentation	Basis of presentation - The unaudited Condensed Consolidated Financial Statements contained in this Quarterly Report have been prepared on the same basis as the audited Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended December 31, 2025 that we filed with the Securities and Exchange Commission (“SEC”) on March 9, 2026 (“2025 Annual Report”). In our opinion, we have made all necessary adjustments (which include only normal recurring adjustments), in order to state fairly, in all material respects, our consolidated financial position, results of operations and cash flows as of the dates and for the periods presented. We have condensed the Consolidated Balance Sheet at December 31, 2025 contained in this Quarterly Report as compared to our audited Consolidated Financial Statements at that date, and we have omitted certain information and footnote disclosures (including those related to the Consolidated Balance Sheet at December 31, 2025) normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Our results of operations for the interim periods ended June 30, 2026 may not be indicative of our operating results for the full year. The Condensed Consolidated Financial Statements contained in this Quarterly Report should be read in conjunction with our 2025 Consolidated Financial Statements contained in our 2025 Annual Report. Unless otherwise indicated, references in this report to “we,” “us” or “our” refer to Kronos Worldwide, Inc. and its subsidiaries (NYSE: KRO) taken as a whole.
Commitments and Contingencies	We are involved in various environmental, contractual, product liability, patent (or intellectual property), employment and other claims and disputes incidental to our business. At least quarterly our management discusses and evaluates the status of any pending litigation to which we are a party. The factors considered in such evaluation include, among other things, the nature of such pending cases, the status of such pending cases, the advice of legal counsel and our experience in similar cases (if any). Based on such evaluation, we make a determination as to whether we believe (i) it is probable a loss has been incurred, and if so, if the amount of such loss (or a range of loss) is reasonably estimable, or (ii) it is reasonably possible, but not probable, a loss has been incurred, and if so, if the amount of such loss (or a range of loss) is reasonably estimable, or (iii) the probability a loss has been incurred is remote. We have not accrued any amounts for litigation matters because it is not reasonably possible we have incurred a loss that would be material to our consolidated financial statements, results of operations or liquidity.

Long-term debt (Tables)

6 Months Ended

Jun. 30, 2026

Long-term debt

Schedule of long term debt


		December 31,			June 30,
		2025			2026

		(In millions)
Kronos International, Inc. 9.50% Senior Secured Notes due 2029		$	503.7		$	487.7
Subordinated, Unsecured Term Loan from Contran			53.7			53.7
Revolving credit facility			-			28.2
Total debt			557.4			569.6
Less current maturities			-			-
Total long-term debt		$	557.4		$	569.6

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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+ Details

Marketable securities - Classification of marketable securities (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Marketable securities
Market value	$ 2.1	$ 1.8
Quoted prices in active markets (Level 1) \| Common stock \| Valhi
Marketable securities
Market value	2.1	1.8
Cost basis	3.2	3.2
Unrealized loss	$ (1.1)	$ (1.4)

Income taxes (Tables)

6 Months Ended

Jun. 30, 2026

Income taxes

Schedule of components of income taxes and comprehensive provision for income taxes allocation


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
U.S. federal statutory tax rate		$	(1.2)		$	4.8		$	4.2		$	4.4
Foreign tax effects:
Germany:
Nondeductible items			.6			.5			1.1			.5
Other			(.4)			.9			-			1.0
Belgium:
Changes in valuation allowances			2.7			.4			2.8			.9
Other			(.3)			(.1)			(.3)			(.1)
Canada:
Subnational income taxes			.6			.5			1.1			.5
Other			(.5)			(.1)			(.6)			(.1)
Other foreign jurisdictions			.3			.1			.5			.2
Effect of cross-border tax laws:
Net controlled-foreign-corporation tested income			1.0			.6			1.6			.7
Incremental tax benefit on losses of subsidiary			(2.2)			(1.3)			(3.8)			(1.4)
Other			.1			.1			.2			.1
Changes in valuation allowances			3.2			1.1			4.6			1.1
Changes in unrecognized tax benefits, net			-			.1			(.1)			2.6
Other adjustments			(.4)			.1			(.2)			.1
Income tax expense		$	3.5		$	7.7		$	11.1		$	10.5

Comprehensive provision for income taxes allocable to:
Net income		$	3.5		$	7.7		$	11.1		$	10.5
Other comprehensive income - pension plans			.1			.1			.2			.2
Total		$	3.6		$	7.8		$	11.3		$	10.7

TiO2 segment information - Reconciliation of segment profit (loss) and Consolidated net income (loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
TiO2 segment and geographic information [Line Items]
Net sales	$ 558.1	$ 494.4	$ 1,067.9	$ 984.2
Segment profit	22.9	(5.7)	20.9	20.0
Corporate interest and dividend income	0.3	0.3	0.5	0.7
Marketable equity securities			0.3	(1.0)
Other components of net periodic pension and OPEB cost	(0.8)	(0.6)	(1.6)	(1.1)
Interest expense	(14.2)	(12.8)	(28.5)	(24.4)
Income tax expense	(7.7)	(3.5)	(10.5)	(11.1)
Net income (loss)	15.2	(9.2)	10.4	8.9
Depreciation expense			$ 31.2	29.0
Number of reportable segments not disclosed			true
Corporate non segment
TiO2 segment and geographic information [Line Items]
Corporate expenses	(3.2)	(3.3)	$ (5.6)	(6.3)
Corporate interest and dividend income	0.1	0.1	0.2	0.3
Single reportable segment
TiO2 segment and geographic information [Line Items]
Depreciation expense	15.8	15.1	31.2	29.0
Single reportable segment \| Operating segment
TiO2 segment and geographic information [Line Items]
Net sales	558.1	494.4	1,067.9	984.2
Segment profit	41.0	10.9	56.1	52.5
Marketable equity securities			0.3	(1.0)
Other components of net periodic pension and OPEB cost	(0.8)	(0.6)	(1.6)	(1.1)
Interest expense	(14.2)	(12.8)	(28.5)	(24.4)
Income tax expense	$ (7.7)	$ (3.5)	$ (10.5)	$ (11.1)

Financial instruments (Tables)

6 Months Ended

Jun. 30, 2026

Financial instruments

Schedule of financial instruments that are not carried at fair value but which require fair value disclosure


	December 31, 2025				June 30, 2026
	Carrying		Fair		Carrying		Fair
	amount		value		amount		value

	(In millions)
Cash, cash equivalents and restricted cash	$	42.5	$	42.5	$	34.5	$	34.5
Long-term debt:
Fixed rate 9.50% Senior Secured Notes due 2029		503.7		469.9		487.7		478.8
Revolving credit facility		-		-		28.2		28.2

Stockholders' equity (Tables)

6 Months Ended

Jun. 30, 2026

Stockholders' equity

Schedule of changes in accumulated other comprehensive loss


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
Accumulated other comprehensive loss, net of tax:
Currency translation:
Balance at beginning of period		$	(282.7)		$	(263.1)		$	(300.0)		$	(267.3)
Other comprehensive income (loss)			14.2			(4.2)			31.5			-
Balance at end of period		$	(268.5)		$	(267.3)		$	(268.5)		$	(267.3)

Defined benefit pension plans:
Balance at beginning of period		$	(63.4)		$	(28.7)		$	(63.8)		$	(29.0)
Other comprehensive income - amortization of prior service cost and net losses included in net periodic pension cost			.4			.3			.8			.6
Balance at end of period		$	(63.0)		$	(28.4)		$	(63.0)		$	(28.4)

OPEB plans:
Balance at beginning and end of period		$	.3		$	.7		$	.3		$	.7

Total accumulated other comprehensive loss:
Balance at beginning of period		$	(345.8)		$	(291.1)		$	(363.5)		$	(295.6)
Other comprehensive income (loss)			14.6			(3.9)			32.3			.6
Balance at end of period		$	(331.2)		$	(295.0)		$	(331.2)		$	(295.0)

TiO2 segment information

6 Months Ended

Jun. 30, 2026

TiO2 segment information

TiO2 segment information

Note 2 - TiO₂ segment information:

Our chief operating decision maker (“CODM”) evaluates the TiO₂ segment’s operating performance based on net income (loss) and segment profit (a non-GAAP measure), which we define as net income (loss) before income tax expense and certain general corporate items. These general corporate items include corporate expense and the components of other income (expense) except for trade interest income which is not significant. Differences between segment profit and the amounts included in consolidated net income (loss) are shown in the table below. Substantially all depreciation expense is included in the calculation of segment profit.


		Three months ended					Six months ended
		June 30,					June 30,
		2025			2026			2025		2026

		(In millions)
Net sales		$	494.4		$	558.1	$	984.2	$	1,067.9

Segment profit		$	10.9		$	41.0	$	52.5	$	56.1
Corporate expenses			(3.3)			(3.2)		(6.3)		(5.6)
Corporate interest and dividend income			.1			.1		.3		.2
Marketable equity securities			-			-		(1.0)		.3
Other components of net periodic pension and OPEB cost			(.6)			(.8)		(1.1)		(1.6)
Interest expense			(12.8)			(14.2)		(24.4)		(28.5)
Income tax expense			(3.5)			(7.7)		(11.1)		(10.5)
Net income (loss)		$	(9.2)		$	15.2	$	8.9	$	10.4

Depreciation expense		$	15.1		$	15.8	$	29.0	$	31.2

Other noncurrent liabilities (Tables)

6 Months Ended

Jun. 30, 2026

Other noncurrent liabilities

Schedule of components of other noncurrent liabilities


		December 31,			June 30,
		2025			2026

		(In millions)
Asset retirement obligations		$	14.7		$	15.0
Accrued postretirement benefits			5.7			5.5
Uncertain tax positions			-			5.4
Employee benefits			4.6			4.3
Other			2.7			2.6
Total		$	27.7		$	32.8

Accounts and other receivables, net - Accounts and Other Receivables, Net (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Accounts and other receivables, net
Allowance for doubtful accounts	$ (3.7)	$ (3.9)
Total	393.3	287.8
Trade receivables
Accounts and other receivables, net
Accounts and other receivables	373.4	270.7
Recoverable VAT and other receivables
Accounts and other receivables, net
Accounts and other receivables	17.7	16.4
Other
Accounts and other receivables, net
Receivables from affiliates	0.7	0.7
Refundable income taxes
Accounts and other receivables, net
Refundable income taxes	1.2	1.2
Valhi \| Income taxes receivable from Valhi
Accounts and other receivables, net
Receivables from affiliates	$ 4.0	$ 2.7

Long-term debt - Senior Notes (Details) - 9.50% Senior Secured Notes due 2029 € in Thousands, $ in Millions	Jun. 30, 2026 USD ($)	Jun. 30, 2026 EUR (€)	Dec. 31, 2025 USD ($)
Long-term debt
Debt instrument interest rate	9.50%	9.50%	9.50%
Kronos International, Inc
Long-term debt
Debt instrument interest rate	9.50%	9.50%	9.50%
Debt instrument principal amount \| €		€ 426,174
Unamortized premium	$ 8.0		$ 9.0
Unamortized debt issuance costs	$ 5.7		$ 6.9

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Marketable securities (Tables)

6 Months Ended

Jun. 30, 2026

Marketable securities

Schedule of classification of marketable securities


		Fair value
		measurement		Market			Cost			Unrealized
Marketable security		level		value			basis			loss

				(In millions)
December 31, 2025:
Valhi common stock		1		$	1.8		$	3.2		$	(1.4)

June 30, 2026:
Valhi common stock		1		$	2.1		$	3.2		$	(1.1)

Recent accounting pronouncements

6 Months Ended

Jun. 30, 2026

Recent accounting pronouncements

Recent accounting pronouncements

Note 16 - Recent accounting pronouncements:

In November 2024, the FASB issued ASU No. 2024-03, Reporting Comprehensive Income - Expense Disaggregation Disclosures. The ASU requires additional information about specific expense categories in the notes to financial statements for both interim and annual reporting periods. The ASU is effective for us beginning with our 2027 Annual Report, and for interim reporting, in the first quarter of 2028, with early adoption permitted. We are in the process of evaluating the additional disclosure requirements.

In May 2026, the FASB issued ASU No. 2026-02, Environmental Credits and Environmental Credit Obligations, which establishes guidance for the recognition, measurement, presentation, and disclosure of environmental credits and related compliance obligations. The standard is intended to improve consistency and comparability in accounting for environmental credit programs by providing a comprehensive accounting framework. The ASU is effective for us beginning in 2028, with early adoption permitted. We are in the process of evaluating the impact this standard will have on our Condensed Consolidated Financial Statements.

- Definition

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Organization and basis of presentation - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2026
Valhi Inc \| Parent Company
Organization and basis of presentation
Parent company ownership interest	50.00%
Valhi Inc \| NLI
Organization and basis of presentation
Ownership percentage in company	83.00%
NLI \| Parent Company
Organization and basis of presentation
Parent company ownership interest	31.00%
Contran
Organization and basis of presentation
Controlling interest description	Consequently, at June 30, 2026, Ms. Simmons and the Family Trust may be deemed to control Contran, and therefore may be deemed to indirectly control the wholly-owned subsidiary of Contran, Valhi, NLI and us.
Contran \| Valhi Inc
Organization and basis of presentation
Ownership percentage of parent company held by related party	91.00%

Revenue recognition - Disaggregation of Net Sales by Place of Manufacture and to Location of Customer (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	$ 558.1	$ 494.4	$ 1,067.9	$ 984.2
Point of origin
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	558.1	494.4	1,067.9	984.2
Point of origin \| Reportable geographical components \| United States
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	440.7	275.7	798.4	598.1
Point of origin \| Reportable geographical components \| Germany
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	253.7	214.5	480.3	431.3
Point of origin \| Reportable geographical components \| Canada
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	87.6	55.7	175.5	166.5
Point of origin \| Reportable geographical components \| Norway
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	62.8	72.8	128.9	143.3
Point of origin \| Reportable geographical components \| Belgium
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	70.3	65.6	134.5	131.3
Point of origin \| Eliminations
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	(357.0)	(189.9)	(649.7)	(486.3)
Point of destination
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	558.1	494.4	1,067.9	984.2
Point of destination \| Europe
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	285.5	226.8	528.6	455.3
Point of destination \| North America
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	199.0	188.2	385.2	378.4
Point of destination \| Other
Entity Wide Information Revenue from External Customer [Line Items]
Net sales	$ 73.6	$ 79.4	$ 154.1	$ 150.5

Revenue recognition

6 Months Ended

Jun. 30, 2026

Revenue recognition

Revenue recognition

Note 9 - Revenue recognition:

The following table disaggregates our net sales by place of manufacture (point of origin) and to the location of the customer (point of destination), which are the categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
Net sales - point of origin:
United States		$	275.7		$	440.7		$	598.1		$	798.4
Germany			214.5			253.7			431.3			480.3
Canada			55.7			87.6			166.5			175.5
Belgium			65.6			70.3			131.3			134.5
Norway			72.8			62.8			143.3			128.9
Eliminations			(189.9)			(357.0)			(486.3)			(649.7)
Total		$	494.4		$	558.1		$	984.2		$	1,067.9

Net sales - point of destination:
Europe		$	226.8		$	285.5		$	455.3		$	528.6
North America			188.2			199.0			378.4			385.2
Other			79.4			73.6			150.5			154.1
Total		$	494.4		$	558.1		$	984.2		$	1,067.9

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
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-Subparagraph (b)(2)
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-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/606/tableOfContent

+ Details

Marketable securities - Additional Information (Detail) - Valhi Inc - Common stock - $ / shares	Jun. 30, 2026	Dec. 31, 2025
Marketable securities
Investments in publicly-traded shares (in shares)	144,000	144,000
Quoted market price of per share (in dollars per share)	$ 14.67	$ 12.05

Financial Instruments - Financial Instruments not Carried at Fair Value but which Require Fair Value Disclosure (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Carrying amount
Financial instruments
Cash, cash equivalents and restricted cash	$ 34.5	$ 42.5
Revolving credit facility	28.2
Fair value
Financial instruments
Cash, cash equivalents and restricted cash	34.5	$ 42.5
Revolving credit facility	$ 28.2
9.50% Senior Secured Notes due 2029
Financial instruments
Debt instrument interest rate	9.50%	9.50%
9.50% Senior Secured Notes due 2029 \| Carrying amount
Financial instruments
Long-term debt - Fixed rate	$ 487.7	$ 503.7
9.50% Senior Secured Notes due 2029 \| Fair value
Financial instruments
Long-term debt - Fixed rate	$ 478.8	$ 469.9

- Definition

Fair value portion of notes payable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
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-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (c)(1)
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
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-Subparagraph (b)
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-Topic 825
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Income taxes - Income tax reconciliation (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Taxes in amount
U.S. federal statutory tax rate	$ 4.8		$ (1.2)	$ 4.4	$ 4.2
Other	0.9		(0.4)	1.0
Changes in valuation allowance	1.1		3.2	1.1	4.6
Effect of cross-border tax laws:
Net controlled-foreign-corporation tested income	0.6		1.0	0.7	1.6
Incremental tax benefit on losses of subsidiary	(1.3)		(2.2)	(1.4)	(3.8)
Other	0.1		0.1	0.1	0.2
Changes in unrecognized tax benefits	0.1			2.6	(0.1)
Income tax expense (benefit)	$ 7.7		$ 3.5	$ 10.5	$ 11.1
Tax Jurisdiction of Domicile [Extensible Enumeration]	United States		United States	United States	United States
Other comprehensive income - pension plans	$ 0.1		$ 0.1	$ 0.2	$ 0.2
Total	7.8		3.6	$ 10.7	11.3
Taxes in percent
U.S. Federal statutory income tax rate				21.00%
Tax positions taken in current period		$ 2.0
Germany
Taxes in amount
Nondeductible items	0.5		0.6	$ 0.5	1.1
Belgium
Taxes in amount
Other	(0.1)		(0.3)	(0.1)	(0.3)
Changes in valuation allowance	0.4		2.7	0.9	2.8
Canada
Taxes in amount
Other	(0.1)		(0.5)	(0.1)	(0.6)
Subnational income taxes	0.5		0.6	0.5	1.1
Other foreign jurisdictions
Taxes in amount
Other	0.1		0.3	0.2	0.5
United States
Taxes in amount
Other	$ 0.1		$ (0.4)	$ 0.1	$ (0.2)

Other noncurrent liabilities

6 Months Ended

Jun. 30, 2026

Other noncurrent liabilities

Other noncurrent liabilities

Note 8 - Other noncurrent liabilities:


		December 31,			June 30,
		2025			2026

		(In millions)
Asset retirement obligations		$	14.7		$	15.0
Accrued postretirement benefits			5.7			5.5
Uncertain tax positions			-			5.4
Employee benefits			4.6			4.3
Other			2.7			2.6
Total		$	27.7		$	32.8

See Note 11 for additional information related to the uncertain tax positions.

Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2026	Jul. 31, 2026
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2026
Document Transition Report	false
Entity File Number	1-31763
Entity Registrant Name	KRONOS WORLDWIDE, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0294959
Entity Address, Address Line One	5430 LBJ Freeway
Entity Address, Address Line Two	Suite 1700
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75240-2620
City Area Code	972
Local Phone Number	233-1700
Title of 12(b) Security	Common stock
Trading Symbol	KRO
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		115,097,516
Entity Central Index Key	0001257640
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	Q2
Amendment Flag	false

Other noncurrent liabilities - Components of Other Noncurrent Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Other noncurrent liabilities
Asset retirement obligations	$ 15.0	$ 14.7
Accrued postretirement benefits	5.5	5.7
Uncertain tax positions	5.4
Employee benefits	4.3	4.6
Other	2.6	2.7
Total	$ 32.8	$ 27.7

Income taxes

6 Months Ended

Jun. 30, 2026

Income taxes

Income taxes

Note 11 - Income taxes:

The provision for income taxes and the difference between such provision for income taxes and the amount that would be expected using the U.S. federal statutory income tax rate of 21% are presented below.


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
U.S. federal statutory tax rate		$	(1.2)		$	4.8		$	4.2		$	4.4
Foreign tax effects:
Germany:
Nondeductible items			.6			.5			1.1			.5
Other			(.4)			.9			-			1.0
Belgium:
Changes in valuation allowances			2.7			.4			2.8			.9
Other			(.3)			(.1)			(.3)			(.1)
Canada:
Subnational income taxes			.6			.5			1.1			.5
Other			(.5)			(.1)			(.6)			(.1)
Other foreign jurisdictions			.3			.1			.5			.2
Effect of cross-border tax laws:
Net controlled-foreign-corporation tested income			1.0			.6			1.6			.7
Incremental tax benefit on losses of subsidiary			(2.2)			(1.3)			(3.8)			(1.4)
Other			.1			.1			.2			.1
Changes in valuation allowances			3.2			1.1			4.6			1.1
Changes in unrecognized tax benefits, net			-			.1			(.1)			2.6
Other adjustments			(.4)			.1			(.2)			.1
Income tax expense		$	3.5		$	7.7		$	11.1		$	10.5

Comprehensive provision for income taxes allocable to:
Net income		$	3.5		$	7.7		$	11.1		$	10.5
Other comprehensive income - pension plans			.1			.1			.2			.2
Total		$	3.6		$	7.8		$	11.3		$	10.7

The amount shown in the preceding table of our income tax rate reconciliation for incremental tax benefit on losses of subsidiary represents current and deferred U.S. income tax benefits attributable to one of our non-U.S. subsidiaries which is treated as a dual resident for U.S. income tax purposes.

On July 4, 2025, the One Big Beautiful Bill Act was signed into law in the United States. It did not have a material impact on our consolidated financial statements.

Tax authorities are examining certain of our U.S. and non-U.S. tax returns and may propose tax deficiencies, including penalties and interest. In March 2026, we received notices of assessment from the German tax authorities for tax years 2019 through 2021. We disagree with the assessments and have filed notice of appeal. However, due to the uncertainty of the appeal and the complexity of the appeal process, during the first quarter of 2026 we recorded net income tax expense of $2.0 million to establish an uncertain tax position, net of amounts expected to be received from other taxing jurisdictions.

We believe we have adequate accruals for additional taxes and related interest expense which could ultimately result from tax examinations. We believe the ultimate disposition of tax examinations should not have a material adverse effect on our consolidated financial position, results of operations or liquidity.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
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-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
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-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Employee benefit plans - Components of Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Net periodic pension cost (income):
Service cost			$ 2.5	$ 2.9
Interest cost			11.1	10.6
Expected return on plan assets			(10.6)	(10.8)
Recognized actuarial losses			0.9	1.0
Total			3.9	$ 3.7
Expected contributions for pension plans in 2026	$ 17.0		$ 17.0
Foreign plan \| Defined benefit pension plans
Net periodic pension cost (income):
Service cost	1.2	$ 1.5
Interest cost	5.5	5.4
Expected return on plan assets	(5.3)	(5.6)
Recognized actuarial losses	0.5	0.6
Total	$ 1.9	$ 1.9

Restructuring costs

6 Months Ended

Jun. 30, 2026

Restructuring costs

Restructuring costs

Note 15 – Restructuring costs:

In the fourth quarter of 2025, we initiated a restructuring plan through workforce reductions which is supporting an improved current and longer-term cost structure. These workforce reductions impacted approximately 226 positions with a substantial portion of such reductions accomplished through involuntary programs. A portion of the reductions was also accomplished through voluntary programs, for which eligible workforce reduction costs were recognized at the time both the employee and employer were irrevocably committed to the terms of the separation. During the fourth quarter of 2025, we recognized an aggregate $10.3 million charge related to these workforce reductions. Accrued severance costs remaining at June 30, 2026 are expected to be substantially paid in 2026 and are included in accounts payable and accrued liabilities on our Condensed Consolidated Balance Sheet, see Note 7. We do not expect to accrue any further material amounts for the workforce reductions.

A summary of the activity in our accrued restructuring costs for the first six months of 2026 is shown in the table below:



	Amount
	(in millions)

Accrued workforce reduction costs at December 31, 2025	$	8.8
Workforce reduction costs accrued		-
Workforce reduction costs paid		(4.8)
Currency translation adjustments, net		(.2)
Current liability at June 30, 2026	$	3.8

Inventories, net - Schedule of Inventories, Net (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Inventories, net
Raw materials	$ 144.5	$ 179.7
Work in process	48.1	47.3
Finished products	176.8	267.9
Supplies	128.9	133.7
Total	$ 498.3	$ 628.6

Long-term debt - Components of Long-Term Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Long-term debt
Revolving credit facility	$ 28.2
Total debt	569.6	$ 557.4
Total long-term debt	569.6	557.4
Related party
Long-term debt
Total long-term debt	53.7	53.7
Related party \| Subordinated, Unsecured Term Loan from Contran
Long-term debt
Subordinated debt	53.7	53.7
Kronos International, Inc \| 9.50% Senior Secured Notes due 2029
Long-term debt
Kronos International, Inc.	$ 487.7	$ 503.7

Stockholders' equity

6 Months Ended

Jun. 30, 2026

Stockholders' equity

Stockholders' equity

Note 12 - Stockholders’ equity:

Changes in accumulated other comprehensive loss are presented in the table below. See Note 10 for discussion of our defined benefit pension plans.


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
Accumulated other comprehensive loss, net of tax:
Currency translation:
Balance at beginning of period		$	(282.7)		$	(263.1)		$	(300.0)		$	(267.3)
Other comprehensive income (loss)			14.2			(4.2)			31.5			-
Balance at end of period		$	(268.5)		$	(267.3)		$	(268.5)		$	(267.3)

Defined benefit pension plans:
Balance at beginning of period		$	(63.4)		$	(28.7)		$	(63.8)		$	(29.0)
Other comprehensive income - amortization of prior service cost and net losses included in net periodic pension cost			.4			.3			.8			.6
Balance at end of period		$	(63.0)		$	(28.4)		$	(63.0)		$	(28.4)

OPEB plans:
Balance at beginning and end of period		$	.3		$	.7		$	.3		$	.7

Total accumulated other comprehensive loss:
Balance at beginning of period		$	(345.8)		$	(291.1)		$	(363.5)		$	(295.6)
Other comprehensive income (loss)			14.6			(3.9)			32.3			.6
Balance at end of period		$	(331.2)		$	(295.0)		$	(331.2)		$	(295.0)

- Definition

The entire disclosure for equity.

+ References

+ Details

Accounts payable and accrued liabilities (Tables)

6 Months Ended

Jun. 30, 2026

Accounts payable and accrued liabilities

Schedule of accounts payable and accrued liabilities


		December 31,			June 30,
		2025			2026

		(In millions)
Accounts payable		$	224.0		$	172.5
Accrued sales discounts and rebates			25.1			14.0
Employee benefits			26.0			26.3
Payables to affiliates:
Contran - trade items			1.3			1.6
Accrued severance costs			8.8			3.8
Operating lease liabilities			4.2			3.9
Other			65.0			60.1
Total		$	354.4		$	282.2

Inventories, net

6 Months Ended

Jun. 30, 2026

Inventories, net

Inventories, net

Note 4 - Inventories, net:


		December 31,			June 30,
		2025			2026

		(In millions)
Raw materials		$	179.7		$	144.5
Work in process			47.3			48.1
Finished products			267.9			176.8
Supplies			133.7			128.9
Total		$	628.6		$	498.3

Stockholders' equity - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Stockholders' equity
Balance at beginning of period	$ 745.0	$ 847.0	$ 751.1	$ 817.0
Balance at end of period	751.0	846.8	751.0	846.8
OPEB Plans
Stockholders' equity
Balance at beginning of period	0.7	0.3	0.7	0.3
Currency translation
Stockholders' equity
Balance at beginning of period	(263.1)	(282.7)	(267.3)	(300.0)
Other comprehensive income (loss)	(4.2)	14.2		31.5
Balance at end of period	(267.3)	(268.5)	(267.3)	(268.5)
Accumulated Defined benefit pension plans \| Defined benefit pension plans
Stockholders' equity
Balance at beginning of period	(28.7)	(63.4)	(29.0)	(63.8)
Other comprehensive income (loss)	0.3	0.4	0.6	0.8
Balance at end of period	(28.4)	(63.0)	(28.4)	(63.0)
Total Accumulated Other Comprehensive Loss
Stockholders' equity
Balance at beginning of period	(291.1)	(345.8)	(295.6)	(363.5)
Other comprehensive income (loss)	(3.9)	14.6	0.6	32.3
Balance at end of period	$ (295.0)	$ (331.2)	$ (295.0)	$ (331.2)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

+ References

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+ Details

Financial Instruments - Additional Information (Detail) - 9.50% Senior Secured Notes due 2029 - EUR (€)	Jun. 30, 2026	Dec. 31, 2025
Financial instruments
Debt instrument interest rate	9.50%	9.50%
Debt instrument estimated market price per 1000 principal amount	€ 986	€ 937
Debt instrument base principal amount	€ 1,000	€ 1,000

Restructuring costs (Detail) $ in Millions	3 Months Ended
Restructuring costs (Detail) $ in Millions	Dec. 31, 2025 USD ($) employee
Restructuring costs
Number of individuals impacted from workforce reductions \| employee	226
Workforce reductions \| $	$ 10.3

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 26.6	$ 33.2
Restricted cash	2.5	3.8
Accounts and other receivables, net	393.3	287.8
Inventories, net	498.3	628.6
Prepaid expenses and other	21.9	41.1
Total current assets	942.6	994.5
Other assets:
Restricted cash	5.4	5.5
Marketable securities	2.1	1.8
Operating lease right-of-use assets	19.2	19.9
Deferred income taxes	29.7	35.8
Goodwill	2.6	2.6
Other	34.8	32.4
Total other assets	93.8	98.0
Property and equipment:
Land	78.3	79.3
Buildings	271.8	279.8
Equipment	1,435.9	1,459.1
Mining properties	139.0	134.2
Construction in progress	49.6	44.5
Gross property and equipment	1,974.6	1,996.9
Less accumulated depreciation and amortization	1,267.0	1,272.6
Net property and equipment	707.6	724.3
Total assets	1,744.0	1,816.8
Current liabilities:
Accounts payable and accrued liabilities	282.2	354.4
Income taxes	3.6	14.4
Total current liabilities	285.8	368.8
Noncurrent liabilities:
Long-term debt (including affiliate debt of $53.7 at each period)	569.6	557.4
Accrued pension costs	73.7	80.9
Operating lease liabilities	15.1	15.7
Deferred income taxes	16.0	15.2
Other	32.8	27.7
Total noncurrent liabilities	707.2	696.9
Stockholders' equity:
Common stock	1.2	1.2
Additional paid-in capital	1,390.8	1,390.4
Retained deficit	(346.0)	(344.9)
Accumulated other comprehensive loss	(295.0)	(295.6)
Total stockholders' equity	751.0	751.1
Total liabilities and stockholders' equity	$ 1,744.0	$ 1,816.8

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Net sales	$ 558.1	$ 494.4	$ 1,067.9	$ 984.2
Cost of sales	455.3	431.6	881.8	814.5
Gross margin	102.8	62.8	186.1	169.7
Selling, general and administrative expense	64.5	62.1	128.1	123.7
Other operating income (expense):
Currency transactions, net	(0.5)	9.4	(5.9)	5.0
Other operating expense, net	(0.2)	(2.7)	(1.9)	(5.2)
Income from operations	37.6	7.4	50.2	45.8
Other income (expense):
Interest and dividend income	0.3	0.3	0.5	0.7
Marketable equity securities			0.3	(1.0)
Other components of net periodic pension and OPEB cost	(0.8)	(0.6)	(1.6)	(1.1)
Interest expense	(14.2)	(12.8)	(28.5)	(24.4)
Income (loss) before income taxes	22.9	(5.7)	20.9	20.0
Income tax expense	7.7	3.5	10.5	11.1
Net income (loss)	$ 15.2	$ (9.2)	$ 10.4	$ 8.9
Net income (loss) per share - basic (in dollars per share)	$ 0.13	$ (0.08)	$ 0.09	$ 0.08
Net income (loss) per share - diluted (in dollars per share)	$ 0.13	$ (0.08)	$ 0.09	$ 0.08
Weighted average shares used in the calculation of net income (loss) per share - basic (in shares)	115.1	115.0	115.1	115.0
Weighted average shares used in the calculation of net income (loss) per share - diluted (in shares)	115.1	115.0	115.1	115.0

Accounts payable and accrued liabilities

6 Months Ended

Jun. 30, 2026

Accounts payable and accrued liabilities

Accounts payable and accrued liabilities

Note 7 - Accounts payable and accrued liabilities:


		December 31,			June 30,
		2025			2026

		(In millions)
Accounts payable		$	224.0		$	172.5
Accrued sales discounts and rebates			25.1			14.0
Employee benefits			26.0			26.3
Payables to affiliates:
Contran - trade items			1.3			1.6
Accrued severance costs			8.8			3.8
Operating lease liabilities			4.2			3.9
Other			65.0			60.1
Total		$	354.4		$	282.2

See Note 15 for additional information related to accrued severance costs.

Marketable securities

6 Months Ended

Jun. 30, 2026

Marketable securities

Marketable securities

Note 5 - Marketable securities:

Our marketable securities consist of investments in the publicly-traded shares of our related party, Valhi. Our marketable securities are carried at fair value using quoted market prices in active markets for each marketable security and represent a Level 1 input within the fair value hierarchy. Unrealized gains or losses on equity securities are recognized in other income (expense) - marketable equity securities on our Condensed Consolidated Statements of Operations.


		Fair value
		measurement		Market			Cost			Unrealized
Marketable security		level		value			basis			loss

				(In millions)
December 31, 2025:
Valhi common stock		1		$	1.8		$	3.2		$	(1.4)

June 30, 2026:
Valhi common stock		1		$	2.1		$	3.2		$	(1.1)

At December 31, 2025 and June 30, 2026, we held approximately 144,000 shares of Valhi’s common stock. At December 31, 2025 and June 30, 2026, the per share quoted market price of Valhi’s common stock was $12.05 and $14.67, respectively.

The Valhi common stock we own is subject to the restrictions on resale pursuant to certain provisions of the SEC Rule 144. In addition, as a majority-owned subsidiary of Valhi we cannot vote our shares of Valhi common stock under Delaware General Corporation Law, but we do receive dividends from Valhi on these shares when declared and paid.

Financial instruments

6 Months Ended

Jun. 30, 2026

Financial instruments

Financial instruments

Note 14 - Financial instruments:

See Note 5 for information on how we determine fair value of our marketable securities.

The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure:


	December 31, 2025				June 30, 2026
	Carrying		Fair		Carrying		Fair
	amount		value		amount		value

	(In millions)
Cash, cash equivalents and restricted cash	$	42.5	$	42.5	$	34.5	$	34.5
Long-term debt:
Fixed rate 9.50% Senior Secured Notes due 2029		503.7		469.9		487.7		478.8
Revolving credit facility		-		-		28.2		28.2

At December 31, 2025 and June 30, 2026, the estimated market price of our 9.50% Senior Secured Notes due 2029 was €937 and €986 per €1,000 principal amount, respectively. The fair value of our Senior Secured Notes due 2029 was based on quoted market prices; however, these prices represented Level 2 inputs because the market in which the notes trade was not active. Due to the variable interest rate, the carrying amount of our revolving credit facility is deemed to approximate fair value. Due to their near-term maturities, the carrying amounts of accounts receivable and accounts payable are considered equivalent to fair value. See Notes 3 and 7.

Restructuring costs (Tables)

6 Months Ended

Jun. 30, 2026

Restructuring costs

Schedule of accrued workforce reduction costs



	Amount
	(in millions)

Accrued workforce reduction costs at December 31, 2025	$	8.8
Workforce reduction costs accrued		-
Workforce reduction costs paid		(4.8)
Currency translation adjustments, net		(.2)
Current liability at June 30, 2026	$	3.8

Employee benefit plans (Tables)

6 Months Ended

Jun. 30, 2026

Employee benefit plans

Schedule of components of net periodic benefit cost


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
Net periodic pension cost (income):
Service cost		$	1.5		$	1.2		$	2.9		$	2.5
Interest cost			5.4			5.5			10.6			11.1
Expected return on plan assets			(5.6)			(5.3)			(10.8)			(10.6)
Recognized actuarial losses			.6			.5			1.0			.9
Total		$	1.9		$	1.9		$	3.7		$	3.9

Accounts and other receivables, net

6 Months Ended

Jun. 30, 2026

Accounts and other receivables, net

Accounts and other receivables, net

Note 3 - Accounts and other receivables, net:


		December 31,			June 30,
		2025			2026

		(In millions)
Trade receivables		$	270.7		$	373.4
Recoverable VAT and other receivables			16.4			17.7
Receivables from affiliates
Income taxes receivable from Valhi			2.7			4.0
Other			.7			.7
Refundable income taxes			1.2			1.2
Allowance for doubtful accounts			(3.9)			(3.7)
Total		$	287.8		$	393.3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
Cash dividends per share	$ 0.05	$ 0.05	$ 0.10	$ 0.10

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Common stock	Additional paid-in capital	Retained deficit	Accumulated other comprehensive loss	Total
Balance at beginning of period at Dec. 31, 2024	$ 1.2	$ 1,390.3	$ (211.0)	$ (363.5)	$ 817.0
Net income (loss)			8.9		8.9
Other comprehensive income (loss), net of tax				32.3	32.3
Issuance of common stock		0.1			0.1
Dividends paid			(11.5)		(11.5)
Balance at end of period at Jun. 30, 2025	1.2	1,390.4	(213.6)	(331.2)	846.8
Balance at beginning of period at Mar. 31, 2025	1.2	1,390.3	(198.7)	(345.8)	847.0
Net income (loss)			(9.2)		(9.2)
Other comprehensive income (loss), net of tax				14.6	14.6
Issuance of common stock		0.1			0.1
Dividends paid			(5.7)		(5.7)
Balance at end of period at Jun. 30, 2025	1.2	1,390.4	(213.6)	(331.2)	846.8
Balance at beginning of period at Dec. 31, 2025	1.2	1,390.4	(344.9)	(295.6)	751.1
Net income (loss)			10.4		10.4
Other comprehensive income (loss), net of tax				0.6	0.6
Issuance of common stock		0.4			0.4
Dividends paid			(11.5)		(11.5)
Balance at end of period at Jun. 30, 2026	1.2	1,390.8	(346.0)	(295.0)	751.0
Balance at beginning of period at Mar. 31, 2026	1.2	1,390.4	(355.5)	(291.1)	745.0
Net income (loss)			15.2		15.2
Other comprehensive income (loss), net of tax				(3.9)	(3.9)
Issuance of common stock		0.4			0.4
Dividends paid			(5.7)		(5.7)
Balance at end of period at Jun. 30, 2026	$ 1.2	$ 1,390.8	$ (346.0)	$ (295.0)	$ 751.0

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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+ Details

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References + Details

- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

+ References

+ Details

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Long-term debt (including affiliate debt of $53.7 at each period)	$ 569.6	$ 557.4
Related party
Long-term debt (including affiliate debt of $53.7 at each period)	$ 53.7	$ 53.7

Inventories, net (Tables)

6 Months Ended

Jun. 30, 2026

Inventories, net

Schedule of inventories, net


		December 31,			June 30,
		2025			2026

		(In millions)
Raw materials		$	179.7		$	144.5
Work in process			47.3			48.1
Finished products			267.9			176.8
Supplies			133.7			128.9
Total		$	628.6		$	498.3

TiO2 segment information (Tables)

6 Months Ended

Jun. 30, 2026

TiO2 segment information

Schedule of differences between segment profit (loss) and the amounts included in consolidated net income (loss)


		Three months ended					Six months ended
		June 30,					June 30,
		2025			2026			2025		2026

		(In millions)
Net sales		$	494.4		$	558.1	$	984.2	$	1,067.9

Segment profit		$	10.9		$	41.0	$	52.5	$	56.1
Corporate expenses			(3.3)			(3.2)		(6.3)		(5.6)
Corporate interest and dividend income			.1			.1		.3		.2
Marketable equity securities			-			-		(1.0)		.3
Other components of net periodic pension and OPEB cost			(.6)			(.8)		(1.1)		(1.6)
Interest expense			(12.8)			(14.2)		(24.4)		(28.5)
Income tax expense			(3.5)			(7.7)		(11.1)		(10.5)
Net income (loss)		$	(9.2)		$	15.2	$	8.9	$	10.4

Depreciation expense		$	15.1		$	15.8	$	29.0	$	31.2

Employee benefit plans

6 Months Ended

Jun. 30, 2026

Employee benefit plans

Employee benefit plans

Note 10 - Employee benefit plans:

The components of net periodic defined benefit pension cost are presented in the table below.


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
Net periodic pension cost (income):
Service cost		$	1.5		$	1.2		$	2.9		$	2.5
Interest cost			5.4			5.5			10.6			11.1
Expected return on plan assets			(5.6)			(5.3)			(10.8)			(10.6)
Recognized actuarial losses			.6			.5			1.0			.9
Total		$	1.9		$	1.9		$	3.7		$	3.9

We expect our 2026 contributions for our pension plans to be approximately $17 million.

- Definition

The entire disclosure for retirement benefits.

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+ Details

Accounts and other receivables, net (Tables)

6 Months Ended

Jun. 30, 2026

Accounts and other receivables, net

Schedule of accounts and other receivables, net


		December 31,			June 30,
		2025			2026

		(In millions)
Trade receivables		$	270.7		$	373.4
Recoverable VAT and other receivables			16.4			17.7
Receivables from affiliates
Income taxes receivable from Valhi			2.7			4.0
Other			.7			.7
Refundable income taxes			1.2			1.2
Allowance for doubtful accounts			(3.9)			(3.7)
Total		$	287.8		$	393.3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Net income (loss)	$ 15.2	$ (9.2)	$ 10.4	$ 8.9
Other comprehensive income (loss), net of tax:
Currency translation	(4.2)	14.2		31.5
Total other comprehensive income (loss), net	(3.9)	14.6	0.6	32.3
Comprehensive income	11.3	5.4	11.0	41.2
Defined benefit pension plans
Other comprehensive income (loss), net of tax:
Benefit pension plans	$ 0.3	$ 0.4	$ 0.6	$ 0.8

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

+ Details

Revenue recognition (Tables)

6 Months Ended

Jun. 30, 2026

Revenue recognition

Disaggregation of Net Sales by Place of Manufacture and to Location of Customer


		Three months ended						Six months ended
		June 30,						June 30,
		2025			2026			2025			2026

		(In millions)
Net sales - point of origin:
United States		$	275.7		$	440.7		$	598.1		$	798.4
Germany			214.5			253.7			431.3			480.3
Canada			55.7			87.6			166.5			175.5
Belgium			65.6			70.3			131.3			134.5
Norway			72.8			62.8			143.3			128.9
Eliminations			(189.9)			(357.0)			(486.3)			(649.7)
Total		$	494.4		$	558.1		$	984.2		$	1,067.9

Net sales - point of destination:
Europe		$	226.8		$	285.5		$	455.3		$	528.6
North America			188.2			199.0			378.4			385.2
Other			79.4			73.6			150.5			154.1
Total		$	494.4		$	558.1		$	984.2		$	1,067.9

Restructuring costs - Accrued workforce reduction cost (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2025	Jun. 30, 2026
Restructuring costs
Balances at beginning of the year		$ 8.8
Workforce reduction costs accrued	$ 10.3
Workforce reduction costs paid		(4.8)
Currency translation adjustments, net		(0.2)
Current liability at the end of the year	$ 8.8	$ 3.8

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

Commitments and contingencies

6 Months Ended

Jun. 30, 2026

Commitments and contingencies

Commitments and contingencies

Note 13 - Commitments and contingencies:

We are involved in various environmental, contractual, product liability, patent (or intellectual property), employment and other claims and disputes incidental to our business. At least quarterly our management discusses and evaluates the status of any pending litigation to which we are a party. The factors considered in such evaluation include, among other things, the nature of such pending cases, the status of such pending cases, the advice of legal counsel and our experience in similar cases (if any). Based on such evaluation, we make a determination as to whether we believe (i) it is probable a loss has been incurred, and if so, if the amount of such loss (or a range of loss) is reasonably estimable, or (ii) it is reasonably possible, but not probable, a loss has been incurred, and if so, if the amount of such loss (or a range of loss) is reasonably estimable, or (iii) the probability a loss has been incurred is remote. We have not accrued any amounts for litigation matters because it is not reasonably possible we have incurred a loss that would be material to our consolidated financial statements, results of operations or liquidity.