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Financial Instruments and Risk Management (Fuel Option Contracts Narrative) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
gal
$ / gal
Dec. 31, 2023
USD ($)
Derivatives | Fuel Options    
Disclosure of detailed information about hedged items [line items]    
Financial assets, at fair value | $ $ (0.1) $ (0.2)
Fuel Contract | Commodity price risk | 2024    
Disclosure of detailed information about hedged items [line items]    
Number of Gallons Subject to Contract | gal 1,512,000  
Fuel Contract | Top of range | Commodity price risk | 2024    
Disclosure of detailed information about hedged items [line items]    
Price per gallon of fuel (in USD per gallon) 2.33  
Fuel Contract | Bottom of range | Commodity price risk | 2024    
Disclosure of detailed information about hedged items [line items]    
Price per gallon of fuel (in USD per gallon) 2.50