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Changes in Equity and Accumulated Other Comprehensive Loss (Details of Accumulated Other Comprehensive Income Components) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Tax impact | $ 31.6 | $ 27.3
Total reclassifications for the period | 3.3 |
Reclassification out of Accumulated Other Comprehensive Income |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Total before tax | 4.5 | 6.2
Tax impact | 1.2 | 1.3
Total reclassifications for the period | 3.3 | 4.9
Pension |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Net loss | 4.8 | 6.5
Prior service costs | 0.0 | 0.0
Postretirement |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |  |
Net loss | 0.0 | 0.0
Prior service costs | $ (0.3) | $ (0.3)

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