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Segment and Geographic Information - Reconciliation of Operating Profit Loss from Segments to Consolidated (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Segment adjusted EBITDA | $ 693.3 | $ 747.3 | $ 833.3
Interest expense | (201.7) | (174.5) | (195.2)
Depreciation and amortization | (487.2) | (492.1) | (544.3)
Restructuring and acquisition-related costs | (25.2) | (30.2) | (49.4)
Pension curtailment and settlement charges | (1.3) | 0.0 | (42.3)
Loss on sale of business | 0.0 | 0.0 | (2.7)
Unrealized gain (loss) on equity securities | (1.1) | (25.5) | 24.4
Debt refinancing and redemption costs | (1.3) | (6.4) | (34.0)
Malvern Fire insurance recoveries, net of charges | 0.0 | 39.1 | 11.4
Acquisition-related fair value inventory adjustment | 0.0 | (5.0) | 0.0
Gain on bargain purchase of business | 0.0 | 13.6 | 0.0
Income (loss) before income taxes | $ (24.5) | $ 66.3 | $ 1.2

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