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COMMITMENTS AND CONTINGENCIES - Employees Under Collective Bargaining Agreements Narrative (Details) $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 01, 2023 | Mar. 31, 2023 USD ($) | Dec. 31, 2023 employee
Other Commitments [Line Items] |  |  |
Approximate number of employees | employee |  |  | 103,000
Percentage of employees represented by unions under collective bargaining agreements |  |  | 20.00%
Collective bargaining agreement term | 4 years |  |
Employee pay rate increase | 18.00% |  |
Pilot agreement expense | $ |  | $ 735 |
Adjustments to other benefit-related items | $ |  | $ 130 |
Monroe refinery employees represented by United Steel Workers |  |  |
Other Commitments [Line Items] |  |  |
Approximate number of employees | employee |  |  | 200

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- Definition Percentage Of Employees Represented By Unions Under Collective Bargaining Agreements + References No definition available. + Details
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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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