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Long-Term Debt - Revolving Credit Facility - Additional Information (Detail) In Millions, unless otherwise specified | 6 Months Ended |  | 6 Months Ended |  |  |
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Jun. 30, 2014 CAD | Jun. 30, 2014 Kronos Worldwide, Inc. Canadian Letter Of Credit Loan Agreement CAD | Jun. 30, 2014 Kronos Worldwide, Inc. European Credit Facility EUR (€) | Jun. 30, 2014 Kronos Worldwide, Inc. European Credit Facility USD ($) | Jun. 30, 2014 Kronos Worldwide, Inc. Revolving North American credit facility USD ($) | Jun. 30, 2014 Kronos Worldwide, Inc. Bank Of Montreal CAD | Dec. 31, 2013 Kronos Worldwide, Inc. Bank Of Montreal CAD | Jun. 30, 2014 Kronos Worldwide, Inc. Economic Development Agency Credit Facility Canada USD ($) | Jun. 30, 2014 Kronos Worldwide, Inc. Economic Development Agency Credit Facility Canada CAD
Line Of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Revolving credit facility, borrowings |  |  | € 0 |  | $ 81.0 |  |  |  |
Repayment of credit facility |  |  | 0 |  | 92.1 |  |  |  |
Outstanding borrowings under revolving credit facility |  |  | 0 |  |  |  |  | 1.6 | 1.8
Amount available for borrowing |  |  | 60.0 | 81.8 | 83.0 |  |  |  |
Percentage of borrowings available under credit facility |  |  |  | 50.00% |  |  |  |  |
Percentage of average interest rate, during period |  |  |  |  | 3.75% |  |  |  |
Aggregate letter of credit outstanding amount | 0.3 |  |  |  |  | 0.3 | 7.9 |  |
Issuance of letter of credit |  |  |  |  |  | 10.0 |  |  |
Aggregate letters of credit cancelled | 7.6 | 7.6 |  |  |  |  |  |  |

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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 borrowed under the credit facility as of the balance sheet date. + References Reference 1: 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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- 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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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 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 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: 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=31042434&loc=d3e3291-108585 Reference 4: 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 Percentage of maximum 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 No definition available. + Details
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