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Debt and Credit Facilities (Short-Term Borrowings and Current Maturities of Long-Term Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Short-term Debt [Line Items]    
Debt instrument, interest rate 7.20%  
Short-term borrowings and current maturities of long-term debt $ 452.2 $ 801.9
Debentures With Put Feature [Member]    
Short-term Debt [Line Items]    
Short-term borrowings and current maturities of long-term debt 295.0 $ 295.0
4.250% Senior Notes Due 2013 [Member]    
Short-term Debt [Line Items]    
Debt instrument, interest rate   3.55%
Short-term borrowings and current maturities of long-term debt $ 0.0 $ 499.4
3.55% Senior Notes due 2024 [Member]    
Short-term Debt [Line Items]    
Debt instrument, interest rate 6.48%  
Three Point Five Five Percent Senior Notes Due Two Thousand Twenty Four    
Short-term Debt [Line Items]    
Short-term borrowings and current maturities of long-term debt $ 149.7 $ 0.0
Seven Point Two Zero Percent Debentures [Domain]    
Short-term Debt [Line Items]    
Debt instrument, interest rate   7.20%
Short-term borrowings and current maturities of long-term debt $ 7.5 $ 7.5