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Long-Term Debt - Revolving Credit Facility - Additional Information (Detail) - Kronos Worldwide, Inc. | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2015 USD ($) | Dec. 31, 2015 EUR (€) | Dec. 31, 2014 USD ($) | Dec. 31, 2015 EUR (€) | Dec. 31, 2015 CAD | Dec. 31, 2014 CAD | Dec. 31, 2012 CAD | Jun. 30, 2012 USD ($)
Foreign Line of Credit | Europe |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity | € |  |  |  | € 120,000,000 |  |  |  |
Credit facility maturity date | September 2017 | September 2017 |  |  |  |  |  |
Debt instrument basis spread on variable rate | 1.90% | 1.90% |  |  |  |  |  |
Revolving credit facility, borrowings (repayments) | € |  | € 0 |  |  |  |  |  |
Outstanding borrowings under revolving credit facility | $ 0 |  |  |  |  |  |  |
Percentage of borrowings available under credit facility | 19.00% |  |  | 19.00% | 19.00% |  |  |
Amount available for borrowing | $ 25,300,000 |  |  | € 23,100,000 |  |  |  |
Foreign Line of Credit | Canada | Economic Development Agency Credit Facility |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity | CAD |  |  |  |  |  |  | CAD 4,500,000 |
Outstanding borrowings under revolving credit facility | $ 3,300,000 |  |  |  | CAD 4,500,000 | CAD 7,900,000 |  |
Revolving North American credit facility |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  | $ 125,000,000
Credit facility maturity date | June 2017 | June 2017 |  |  |  |  |  |
Fixed charge coverage ratio, minimum value | 110.00% | 110.00% |  |  |  |  |  |
Revolving credit facility, borrowings | $ 0 |  | $ 81,000,000 |  |  |  |  |
Repayment of credit facility | $ 0 |  | 92,100,000 |  |  |  |  |
Amount available for Borrowing |  |  | $ 68,300,000 |  |  |  |  |
Revolving North American credit facility | Minimum | Variable Rate |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt instrument basis spread on variable rate | 1.50% | 1.50% |  |  |  |  |  |
Revolving North American credit facility | Minimum | Base Rate Option |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt instrument basis spread on variable rate | 0.50% | 0.50% |  |  |  |  |  |
Revolving North American credit facility | Maximum | Variable Rate |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt instrument basis spread on variable rate | 2.00% | 2.00% |  |  |  |  |  |
Revolving North American credit facility | Maximum | Base Rate Option |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt instrument basis spread on variable rate | 1.00% | 1.00% |  |  |  |  |  |
Letter Of Credit | Revolving North American credit facility |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 15,000,000 |  |  |  |  |  |  |
Canadian Subsidiary Revolving Borrowings Maximum | Revolving North American credit facility |  |  |  |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 25,000,000 |  |  |  |  |  |  |

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- Definition Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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