Financial Derivative Instruments - Fuel Hedging (Details) gal in Millions	3 Months Ended
Mar. 31, 2023 gal
Remainder of 2023
Volume of Fuel Hedging
Fuel Hedged (in gallons)	813
2024
Volume of Fuel Hedging
Fuel Hedged (in gallons)	1,265
2025
Volume of Fuel Hedging
Fuel Hedged (in gallons)	227

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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