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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statement of Stockholders' Equity [Abstract] |  |  |
Loss (gain) of pension and post retirement benefit plan adjustments | $ 3.5 | $ 3.1 | $ (3.6)
Share of affiliated comprehensive (income) loss | $ 17.7 | $ 3.3 | $ 24.3

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