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Financial Derivative Instruments and Risk Management - Narrative (Details) - USD ($)	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Forecast
Derivative [Line Items]
Percentage of projected fuel requirements hedged	5.50%	19.30%
Aircraft Fuel Derivatives
Derivative [Line Items]
Offsetting derivative instruments			$ 0	$ 0
Aircraft Fuel Derivatives | Fuel
Derivative [Line Items]
Estimated amount of existing gains expected to be reclassified into earnings in the next 12 months			$ 2,000,000	$ 0

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- Definition

Percentage Of Projected Fuel Requirements Hedged

+ References

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- Definition

Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The estimated net amount of unrealized gains or losses on price risk cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

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