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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 356.3 | $ 408.7 | $ 359.0
Other comprehensive income (loss): |  |  |
Foreign currency translation adjustments | 0.8 | 3.7 | (16.9)
Reclassification of foreign currency translation adjustments into earnings | 0.0 | (2.1) | (27.9)
Net change in pension and post-retirement benefit liabilities | (8.7) | (7.1) | (14.2)
Change in fair value of available-for-sale marketable equity securities | 0.0 | 0.0 | (1.8)
Net change in fair value of cash flow hedges | 7.0 | 1.3 | (13.6)
Reclassification of pension and post-retirement benefit losses into earnings | 5.9 | 5.7 | 9.3
non-cash pension settlement loss | 0.6 | 99.2 | 0.4
Reclassification of cash flow hedge losses into earnings | 3.7 | 6.9 | (6.1)
Other comprehensive income (loss) before taxes | 8.1 | 111.8 | (15.0)
Tax expense | (1.5) | (26.8) | (16.4)
Other comprehensive income (loss), net of tax | 6.6 | 85.0 | (31.4)
Comprehensive income | 362.9 | 493.7 | 327.6
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Net Income (Loss) Attributable to Parent | 356.3 | 408.7 | 359.0
Foreign currency translation adjustments | 0.8 | 3.7 | (16.9)
Reclassification of foreign currency translation adjustments into earnings | 0.0 | (2.1) | (27.9)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax | 8.7 | 7.1 | 14.2
Net change in fair value of cash flow hedges | 7.0 | 1.3 | (13.6)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax | (5.9) | (5.7) | (9.3)
non-cash pension settlement loss | 0.6 | 99.2 | 0.4
Change in fair value of available-for-sale marketable equity securities | 0.0 | 0.0 | (1.8)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax | (3.7) | (6.9) | 6.1
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent | 8.1 | 111.8 | (15.0)
Other Comprehensive Income (Loss), Tax | 1.5 | 26.8 | 16.4
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 6.6 | 85.0 | (31.4)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | 362.9 | 493.7 | 327.6
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |
Other comprehensive income (loss): |  |  |
Share of equity method investments other comprehensive income | (1.2) | 0.0 | 0.0
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Share of equity method investments other comprehensive income | $ (1.2) | $ 0.0 | $ 0.0

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