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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Financial Instruments not Carried at Fair Value | The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2021 and 2022:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2021 |  | December 31, 2022
​ | ​ | Carrying | ​ | Fair | ​ | Carrying | ​ | Fair
​ | ​ | amount | ​ | value | ​ | amount | ​ | value
​ | ​ | (In millions)
Cash, cash equivalents and restricted cash equivalents | ​ | $ | 792.9 | ​ | $ | 792.9 | ​ | $ | 562.0 | ​ | $ | 562.0
Long-term debt: | ​ |  | ​ | ​ |  |  | ​ |  | ​ | ​ |  |
Kronos Senior Notes | ​ |  | 448.8 | ​ |  | 460.2 | ​ |  | 424.1 | ​ |  | 374.2
Valhi credit facility with Contran | ​ |  | 172.9 | ​ |  | 172.9 | ​ |  | 121.4 | ​ |  | 121.4
LandWell bank note payable | ​ |  | 13.5 | ​ |  | 13.5 | ​ |  | 12.9 | ​ |  | 12.9
BWC bank note payable | ​ |  | 15.4 | ​ |  | 15.9 | ​ |  | — | ​ |  | —
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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