LEASES - Narrative (Details) $ in Millions	Dec. 31, 2025 USD ($) aircraft airport lease
Lessee, Lease, Description [Line Items]
Additional leases not yet commenced \| $	$ 122
Additional leases not yet commenced term of contract	7 years
Aircraft
Lessee, Lease, Description [Line Items]
Number of leases	122
Number of finance leases	20
Number of operating leases	102
Lease component of purchase agreements, number of aircraft \| aircraft	119
Aircraft \| Minimum
Lessee, Lease, Description [Line Items]
Remaining term of operating leases	2 months
Remaining term of finance leases	2 months
Aircraft \| Maximum
Lessee, Lease, Description [Line Items]
Remaining term of operating leases	10 years
Remaining term of finance leases	10 years
Airport Facilities
Lessee, Lease, Description [Line Items]
Number of airports with facility space under lease \| airport	300
Airport Facilities \| Minimum
Lessee, Lease, Description [Line Items]
Remaining term of operating leases	1 month
Airport Facilities \| Maximum
Lessee, Lease, Description [Line Items]
Remaining term of operating leases	28 years
Other Ground Property and Equipment \| Minimum
Lessee, Lease, Description [Line Items]
Remaining term of operating leases	1 month
Remaining term of finance leases	1 month
Other Ground Property and Equipment \| Maximum
Lessee, Lease, Description [Line Items]
Remaining term of operating leases	5 years
Remaining term of finance leases	5 years

Finance Lease, Number Of Leases

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- Definition

Lease Component Of Purchase Agreements, Number Of Aircraft

+ References

No definition available.

+ Details

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- Definition

Lease, Number Of Leases

+ References

No definition available.

+ Details

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- Definition

Operating Lease, Number Of Airports With Facility Space Under Lease

+ References

No definition available.

+ Details

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- Definition

Operating Lease, Number Of Leases

+ References

No definition available.

+ Details

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- Definition

Term of lessee's finance lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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- Definition

Remaining lease term of finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts.

+ References

Reference 1: 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 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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