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Long-Term Debt - Revolving Credit Facility - Additional Information (Detail) (Kronos Worldwide, Inc.) In Millions, unless otherwise specified | 9 Months Ended |  | 9 Months Ended | 8 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2013 Revolving North American credit facility USD ($) | Sep. 30, 2013 Bank Of Montreal CAD | Sep. 30, 2013 Economic Development Agency Credit Facility Canada USD ($) | Sep. 30, 2013 Economic Development Agency Credit Facility Canada CAD | Aug. 31, 2013 Revolving European credit facility | Sep. 30, 2013 Revolving European credit facility USD ($) | Sep. 30, 2013 Revolving European credit facility EUR (€)
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |
Percentage of average interest rate, during period | 2.46% |  |  |  | 2.02% |  |
Amount available for borrowing | $ 56.6 |  |  |  |  | $ 32.4 |
Revolving credit facility, borrowings | 90.3 |  | 1.8 | 1.8 |  | 12.8 | 10.0
Repayment of credit facility | 44.1 |  |  |  |  | 26.5 | 20.0
Percentage of average interest rate | 2.63% |  |  |  |  |  |
Aggregate letter of credit outstanding amount |  | 7.5 |  |  |  |  |
Issuance of letter of credit |  | 10.0 |  |  |  |  |
Imputed interest on borrowings |  |  | $ 0.5 | 0.5 |  |  |

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate at the end of the reporting period. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate during the reporting period. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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