Annual report [Section 13 and 15(d), not S-K Item 405]

Debt - Schedule of Long-Term Debt Instruments (Details)

v3.25.4
Debt - Schedule of Long-Term Debt Instruments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Long-term debt $ 3,346,276  
Units subject to mandatory redemption 0 $ 3,399
Total debt 3,351,649 3,282,860
Less: Short-term debt and current portion of long-term debt (60,187) (51,732)
Long-term debt $ 3,291,462 3,231,128
8-year senior secured notes, semi-annual interest payments, 4.38%, mature February 1, 2030 | Senior Secured Notes    
Debt Instrument [Line Items]    
Debt instrument, term 8 years  
Interest rate 4.38%  
Long-term debt $ 402,677 401,676
8-year senior secured notes, semi-annual interest payments, 5.88%, mature August 1, 2032 | Senior Secured Notes    
Debt Instrument [Line Items]    
Debt instrument, term 8 years  
Interest rate 5.88%  
Long-term debt $ 1,209,908 1,198,183
Commercial notes, periodic interest and principal payments, 5.25%, expire May 1, 2026    
Debt Instrument [Line Items]    
Interest rate 5.25%  
Commercial notes, periodic interest and principal payments, 5.25%, expire May 1, 2026 | Commercial Paper    
Debt Instrument [Line Items]    
Premium financing notes $ 2,519 0
Commercial notes, periodic interest and principal payments, 5.25%, expire June 1, 2026    
Debt Instrument [Line Items]    
Interest rate 5.25%  
Commercial notes, periodic interest and principal payments, 5.25%, expire June 1, 2026 | Commercial Paper    
Debt Instrument [Line Items]    
Premium financing notes $ 499 0
Commercial notes, periodic interest and principal payments, 5.25%, expire June 21, 2026    
Debt Instrument [Line Items]    
Interest rate 5.25%  
Commercial notes, periodic interest and principal payments, 5.25%, expire June 21, 2026 | Commercial Paper    
Debt Instrument [Line Items]    
Premium financing notes $ 2,355 0
Commercial notes, periodic interest and principal payments, 6.25%, expired May 1, 2025    
Debt Instrument [Line Items]    
Interest rate 6.25%  
Commercial notes, periodic interest and principal payments, 6.25%, expired May 1, 2025 | Commercial Paper    
Debt Instrument [Line Items]    
Premium financing notes $ 0 2,673
Commercial notes, periodic interest and principal payments, 6.25%, expired June 1, 2025    
Debt Instrument [Line Items]    
Interest rate 6.25%  
Commercial notes, periodic interest and principal payments, 6.25%, expired June 1, 2025 | Commercial Paper    
Debt Instrument [Line Items]    
Premium financing notes $ 0 548
Commercial notes, periodic interest and principal payments, 6.25%, expired June 21, 2025    
Debt Instrument [Line Items]    
Interest rate 6.25%  
Commercial notes, periodic interest and principal payments, 6.25%, expired June 21, 2025 | Commercial Paper    
Debt Instrument [Line Items]    
Premium financing notes $ 0 $ 2,642
Secured Debt | Credit Agreement | Line of Credit    
Debt Instrument [Line Items]    
Debt instrument, term 7 years  
Interest rate 2.00% 2.25%
Long-term debt $ 1,659,629 $ 1,672,532
Revolving Credit Facility | Credit Agreement | Line of Credit    
Debt Instrument [Line Items]    
Debt instrument, term 5 years  
Basis spread on variable rate 2.50%  
Long-term debt $ 74,062 $ 1,207
Revolving Credit Facility | Credit Agreement | Line of Credit | Minimum    
Debt Instrument [Line Items]    
Commitment fee percentage 0.25%  
Revolving Credit Facility | Credit Agreement | Line of Credit | Maximum    
Debt Instrument [Line Items]    
Commitment fee percentage 0.50%