v3.26.3
Debt and Credit Facilities (Summary of Debt) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Total borrowings outstanding $ 2,041.2 $ 1,990.8
Discounts and debt issuance costs, net (9.2) (10.7)
Total debt 2,032.0 1,980.1
Less current portion of long-term debt 0.3 0.2
Total long-term debt 2,031.7 1,979.9
Other debt    
Debt Instrument [Line Items]    
Total borrowings outstanding 0.3 0.2
Line of Credit | Revolving Facility    
Debt Instrument [Line Items]    
Total borrowings outstanding $ 240.9 190.6
Senior Notes | 3.550% Senior Note due 2027    
Debt Instrument [Line Items]    
Stated interest rate 3.55%  
Total borrowings outstanding $ 400.0 400.0
Senior Notes | 3.500% Senior Notes Due 2029    
Debt Instrument [Line Items]    
Stated interest rate 3.50%  
Total borrowings outstanding $ 400.0 400.0
Senior Notes | Five Point Six Percent Senior Notes Due 2034    
Debt Instrument [Line Items]    
Stated interest rate 5.60%  
Total borrowings outstanding $ 400.0 400.0
Senior Notes | Five Point Four One One Percent Senior Notes Due 2032    
Debt Instrument [Line Items]    
Stated interest rate 5.411%  
Total borrowings outstanding $ 600.0 $ 600.0