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COMMITMENTS AND CONTINGENCIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 employee aircraft
Future Purchase Commitments
Approximate number of employees | employee	103,000
Percentage of employees represented by unions under collective bargaining agreements	20.00%
Monroe refinery employees represented by United Steel Workers
Future Purchase Commitments
Approximate number of employees | employee	200
A350-1000
Future Purchase Commitments
Number of aircraft agreed to be acquired | aircraft	20
A350-1000 Widebody
Future Purchase Commitments
Number of optional additional aircrafts | aircraft	20

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (d)
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-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

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