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Long-term debt - Revolving Credit Facility - Additional Information (Detail) - Kronos Worldwide, Inc. € in Millions, $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jul. 17, 2024 USD ($) | Jun. 30, 2024 EUR (€)
Global Revolver Credit Facility |  |  |
Line Of Credit Facility [Line Items] |  |  |
Line of credit maximum borrowing capacity | $ 225 |  |
Revolving credit facility, borrowings | 0 |  |
Amount available for borrowing | $ 225 |  |
Fixed charge coverage ratio, minimum value | 1.00% |  |
Global Revolver Credit Facility | Subsequent event |  |  |
Line Of Credit Facility [Line Items] |  |  |
Line of credit maximum borrowing capacity |  | $ 300 |
Global Revolver Credit Facility | Floor Rate Option [Member |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate spread | 0.25% |  |
Global Revolver Credit Facility | Minimum | Variable Rate |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate spread | 1.50% |  |
Global Revolver Credit Facility | Minimum | Base Rate Option |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate spread | 0.50% |  |
Global Revolver Credit Facility | Maximum | Variable Rate |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate spread | 2.00% |  |
Global Revolver Credit Facility | Maximum | Base Rate Option |  |  |
Line Of Credit Facility [Line Items] |  |  |
Interest rate spread | 2.00% |  |
Canadian Subsidiary Revolving Borrowings Maximum |  |  |
Line Of Credit Facility [Line Items] |  |  |
Line of credit maximum borrowing capacity | $ 35 |  |
Belgian Subsidiary Revolving Borrowings Maximum |  |  |
Line Of Credit Facility [Line Items] |  |  |
Line of credit maximum borrowing capacity | € |  |  | € 30
German Subsidiary Revolving Borrowings Maximum |  |  |
Line Of Credit Facility [Line Items] |  |  |
Line of credit maximum borrowing capacity | € |  |  | € 60

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- 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
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