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v3.21.2

Other (Expense) Income, Net (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Other Income And Expenses [Abstract] |  |  |  |
Interest income |  | $ 0.2 | $ 0.1 | $ 0.3
Net periodic postretirement benefit cost | $ (1.2) | (1.2) | (1.8) | (2.4)
Realized gain on available for sale securities |  | 0.6 |  | 2.1
Unrealized gain on equity securities | 0.1 | 0.7 |  | 0.1
(Loss) gain on extinguishment of debt | (35.9) |  | (35.9) |
All other, net | 0.4 | 0.2 | 0.6 | (0.4)
Other (expense) income, net | $ (36.6) | $ 0.5 | $ (37.0) | $ (0.3)

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