Quarterly report [Sections 13 or 15(d)]

Fair Value Measurements and Derivatives (Details)

v3.25.3
Fair Value Measurements and Derivatives (Details)
T in Thousands, $ in Thousands, € in Millions
9 Months Ended
Sep. 30, 2025
USD ($)
T
Sep. 30, 2025
EUR (€)
T
Dec. 31, 2024
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Fair value of long-term debt $ 14,100,000   $ 12,800,000
Fair value of long-term debt in excess of carrying value $ 800,000   $ 600,000
Fuel contracts      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivative maturing date Dec. 31, 2027    
Not Designated as Hedging Instrument | Fuel contracts      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivative maturing date Oct. 31, 2027    
Projected fuel purchases | T 78 78  
Not Designated as Hedging Instrument | Foreign exchange      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notional amount of derivatives $ 93,500 € 79.7  
Designated as Hedging Instrument | Fuel contracts      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Projected fuel purchases 764    
Designated as Hedging Instrument | Foreign exchange      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notional amount of derivatives $ 1,300,000 € 1,100.0