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Accumulated Other Comprehensive Loss - Schedule of unrecognized net defined benefit and postretirement plan costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Defined Benefit and Postretirement Plan Costs |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Reclassification adjustment from AOCI on unrecognized net defined benefit and postretirement plan costs, net losses | $ (0.2) | $ 0.6 | $ (0.4) | $ 1.6
Reclassification adjustment from AOCI on derivatives, net gains (losses) | (0.2) | 0.4 | (0.4) | 1.2
Change in Fair Value of Derivatives Products |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Reclassification adjustment from AOCI on unrecognized net defined benefit and postretirement plan costs, tax | 5.1 | 2.3 | 2.0 | 8.1
Reclassification adjustment from AOCI on derivatives, tax expense (benefit) | 4.1 | 1.6 | 1.5 | 5.9
Change in Fair Value of Derivatives Products | Foreign Currency Forward Exchange Contracts |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Reclassification adjustment from AOCI on unrecognized net defined benefit and postretirement plan costs, tax | 0.2 | 1.5 | 2.2 | 7.8
Reclassification adjustment from AOCI on derivatives, tax expense (benefit) | 0.3 | 1.1 | 1.6 | 5.7
Change in Fair Value of Derivatives Products | Commodity Swaps |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Reclassification adjustment from AOCI on unrecognized net defined benefit and postretirement plan costs, tax | 0.4 | 1.9 | 0.4 | 4.6
Reclassification adjustment from AOCI on derivatives, tax expense (benefit) | 0.4 | 1.4 | 0.3 | 3.5
Change in Fair Value of Derivatives Products | Interest Rate Derivatives |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |
Reclassification adjustment from AOCI on unrecognized net defined benefit and postretirement plan costs, tax | 4.5 | (1.1) | (0.6) | (4.3)
Reclassification adjustment from AOCI on derivatives, tax expense (benefit) | $ 3.4 | $ (0.9) | $ (0.4) | $ (3.3)

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