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Other Noncurrent Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2021
Other Liabilities Disclosure [Abstract] |
Components of Other Noncurrent Liabilities |
| December 31, |  |  | September 30, |
| 2020 |  |  | 2021 |
| (In millions) |
Accrued postretirement benefits | $ | 8.7 |  |  | $ | 8.8 |
Employee benefits |  | 6.2 |  |  |  | 5.4 |
Other |  | 11.8 |  |  |  | 13.6 |
Total | $ | 26.7 |  |  | $ | 27.8 |

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- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
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