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Other Income (Expense), Net (Tables) | 3 Months Ended
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Mar. 31, 2023
Other Income and Expenses [Abstract] |
Other Income (Expense), Net | The following table presents the components of Other income (expense), net (in millions of dollars):
|  | Quarter Ended March 31, |
|  | 2023 |  |  | 2022 |
Interest income |  | $ | 0.4 |  |  | $ | — |
Net periodic postretirement benefit cost |  |  | (2.0 | ) |  |  | (1.4 | )
Unrealized gain (loss) on equity securities |  |  | 0.1 |  |  |  | (0.4 | )
Gain on disposition of property, plant and equipment |  |  | 15.0 |  |  |  | — |
All other, net |  |  | 0.1 |  |  |  | 0.2 |
Other income (expense), net |  | $ | 13.6 |  |  | $ | (1.6 | )

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- Definition Tabular disclosure of the components of non-operating income or non-operating expense that may include amounts earned from dividends, interest on securities, gains (losses) on securities sold, equity earnings of unconsolidated affiliates, net gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References No definition available. + Details
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