v3.26.1
Debt and Financing Arrangements (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
May 02, 2024
Unsecured Local Credit Facilities      
Line of Credit Facility [Line Items]      
Weighted average interest rate (as percent) 1.26% 0.88%  
Available borrowings $ 28,900,000    
Other short-term borrowings, outstanding borrowings $ 22,900,000 $ 16,000,000.0  
Senior Unsecured Notes due 2028 | Unsecured Local Credit Facilities      
Line of Credit Facility [Line Items]      
Debt instrument interest rate stated percentage 5.625% 5.625%  
Amount outstanding $ 500,000,000.0 $ 500,000,000.0  
Accrued interest 2,300,000 2,900,000  
Senior Unsecured Notes due 2028 | Unsecured Local Credit Facilities | Level 2      
Line of Credit Facility [Line Items]      
Fair value of notes $ 498,000,000.0 505,000,000.0  
Senior Unsecured Notes Due 2033 | Unsecured Local Credit Facilities      
Line of Credit Facility [Line Items]      
Effective interest rate (as percent) 5.788%    
Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity     $ 950,000,000.0
Outstanding borrowings $ 441,600,000 $ 431,300,000  
Weighted average interest rate (as percent) 4.88% 5.06%  
Available borrowings $ 504,400,000    
Letters of credit outstanding 4,000,000.0    
Letters of Credit      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity 58,700,000    
Outstanding borrowings 6,800,000 $ 6,900,000  
Line of credit secured $ 4,000,000.0 $ 4,000,000.0