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v3.23.1

Financial Derivative Instruments - Premiums for Fuel Derivative Contracts (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Fuel derivative contracts | Designated as Hedging Instrument | Fuel and oil |  |
Derivative [Line Items] |  |
Premium expense recognized in income on derivatives | $ 30 | $ 26

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- Definition The premium (cost) of a hedge, expensed during the period. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition 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. + References No definition available. + Details
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- Details
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- Details
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- Details
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