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v3.22.2.2

Other Income (Expense), Net (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 0.4 | $ 0.1 | $ 0.6 | $ 0.2
Net periodic postretirement benefit cost | (1.4) | (1.2) | (4.3) | (3.0)
Unrealized (loss) gain on equity securities | (0.3) |  | (1.4) |
Loss on extinguishment of debt |  |  |  | (35.9)
Gain (loss) on disposition of property, plant and equipment | 8.4 |  | 6.3 | (0.1)
Post-acquisition funding received from Alcoa Corporation | 6.0 |  | 6.0 |
All other, net | (0.4) | (0.1) | 0.2 | 0.6
Other income (expense), net | $ 12.7 | $ (1.2) | $ 7.4 | $ (38.2)

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