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Long-Term Debt - Senior Secured Notes - Additional Information (Detail) € in Millions, $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2019 EUR (€) | Dec. 31, 2018 USD ($)
Debt Instrument [Line Items] |  |  |
Aggregate principal amount outstanding | $ 449.7 |  | $ 452.4
Kronos International, Inc | 3.75% Senior Secured Notes due September 15, 2025 |  |  |
Debt Instrument [Line Items] |  |  |
Aggregate principal amount outstanding | $ 449.7 | € 400 | $ 452.4
Debt instrument interest rate | 3.75% | 3.75% |
Unamortized debt issuance costs | $ 5.8 |  |
Debt instrument maturity date | Sep. 15, 2025 |  |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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