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Long-Term Debt (Tables)
9 Months Ended
Sep. 30, 2022
Debt Disclosure [Abstract]  
Components of Long Term Debt

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December 31, 

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September 30, 

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2021

    

2022

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(In millions)

Kronos International, Inc. 3.75% Senior Notes

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$

448.8

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$

390.2

Other

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2.4

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2.0

Total debt

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451.2

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392.2

Less current maturities

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1.4

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1.3

Total long-term debt

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$

449.8

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$

390.9