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Special Items (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Special Items
Spirit acquisition costs	$ 24		$ 7	$ 41	$ 7
Special items - fleet impairment	0		5	0	5
Union contract costs	0	$ 95	32	95	32
Special items	$ 24		$ 44	$ 136	$ 44

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- Definition

Special items during period

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Special Items

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Special Items, Fleet Transaction

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Special Items, Union Contract Costs

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Spirit Airlines, Inc. Acquisition Related Expenses

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