v3.26.1
Note 4 - Financing Arrangements (Details Textual) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Senior Notes [Member]    
Long-term debt $ 743.7 $ 1,443.2
Committed Term Loans [Member]    
Debt Instrument, Loans, Maximum Borrowing Capacity 700.0  
Term Loans [Member]    
Long-term debt 475.0  
Senior Notes Issued in March 2025 [Member] | Senior Notes [Member]    
Unsecured Debt $ 750.0  
Debt Instrument, Interest Rate, Stated Percentage 4.90%  
Senior Notes Maturing in March 2026 [Member] | Senior Notes [Member]    
Debt Instrument, Interest Rate, Stated Percentage 3.875%  
Repayments of Debt $ 700.0  
Revolving Credit Facility [Member]    
Line of Credit Facility, Maximum Borrowing Capacity $ 1,000.0  
Debt Instrument, Term 5 years  
Line of Credit Facility, Maximum Borrowing Capacity, Optional Increase $ 400.0  
Line of Credit Facility, Duration By Which Maturity Date May Be Extended Upon Request 1 year  
Long-Term Line of Credit $ 87.1  
Long-term debt $ 559.1 $ 23.6
Revolving Credit Facility and Term Loans [Member]    
Debt, Weighted Average Interest Rate 4.66%