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Supplemental Financial Information Supplemental Financial Information (Other Income) (Details) - USD ($)
$ in Millions
 1 Months Ended 4 Months Ended 8 Months Ended 12 Months Ended
Mar. 31, 2020
Apr. 30, 2021
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2020
Supplemental Financial Information [Abstract]          
Gain (Loss) on Sale of Properties   $ 6.0 $ 21.2 $ 141.2 $ 11.8
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component   5.4 8.7 16.4 (14.6)
Net foreign currency exchange gains (losses)   13.4 8.1 12.2 (11.0)
Business Combination, Bargain Purchase, Gain Recognized And Adjustment   0.0 0.0 0.0 (6.3)
Gain (Loss) on Extinguishment of Debt $ 3.1 0.0 0.0 0.0 3.1
Other Nonoperating Expense   1.1 0.1 0.1 3.8
Other, net   $ 25.9 $ 38.1 $ 169.9 $ 16.0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]       Other, net