Debt and Credit Facilities (Short-Term Borrowings and Current Maturities of Long-Term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Short-term borrowings and current maturities of long-term debt	$ 694.6	$ 452.2
Debentures With Put Feature [Member]
Short-term borrowings and current maturities of long-term debt	$ 295.0	295.0
Commercial Paper [Member]
Short-term borrowings and current maturities of long-term debt		$ 0.0
Six Point Four Eight Percent Debenture Due Two Thousand Twenty Five
Debt Instrument, Interest Rate, Stated Percentage	6.48%	6.48%
6.48% Debentures Due 2025 [Member]
Short-term borrowings and current maturities of long-term debt	$ 0.0	$ 149.7
Seven Point Two Zero Percent Debentures [Domain]
Short-term borrowings and current maturities of long-term debt	$ 0.0	$ 7.5
Debt Instrument, Interest Rate, Stated Percentage	7.20%	7.20%
Three Point Five Percent Senior notes Due Two Thousand Twenty Six [Member]
Short-term borrowings and current maturities of long-term debt	$ 399.6	$ 0.0
Three Point Five Percent Senior notes Due Two Thousand Twenty Six [Member]
Debt Instrument, Interest Rate, Stated Percentage	3.50%	3.50%