v3.26.3
Note 4 - Financing Arrangements (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2026
Sep. 30, 2026
Dec. 31, 2025
Senior Notes [Member]      
Long-term debt   $ 744.5 $ 1,443.2
Committed Term Loans [Member]      
Debt Instrument, Loans, Maximum Borrowing Capacity   700.0  
Term Loans [Member]      
Long-term debt   300.0  
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   $ 81.9  
Long-term debt   $ 379.3 $ 23.6
Revolving Credit Facility and Term Loans [Member]      
Debt, Weighted Average Interest Rate   4.85%