LEASES - Narratives (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2021
USD ($)
aircraft
|
Dec. 31, 2020
USD ($)
|
Dec. 31, 2019
USD ($)
|
|
| Lessee, Lease, Description [Line Items] | |||
| Number of lease aircrafts (aircraft) | 329 | ||
| Number of lease aircrafts, finance (aircraft) | 22 | ||
| Number of lease aircrafts, operating (aircraft) | 18 | ||
| Number of lease aircrafts, short-term (aircraft) | 289 | ||
| Impairment charges for ROU assets | $ | $ 0 | $ 17 | $ 0 |
| Finance Lease, Impairment Loss | $ | 0 | $ 0 | |
| Lessee, Finance Lease and Operating Lease, Lease Not Yet Commenced, Amount | $ | $ 348 | ||
| Minimum | |||
| Lessee, Lease, Description [Line Items] | |||
| Lessee, Lease Term | 1 month | ||
| Maximum | |||
| Lessee, Lease, Description [Line Items] | |||
| Lessee, Lease Term | 139 years | ||
| X | ||||||||||
- Definition Lessee, Finance Lease and Operating Lease, Lease Not Yet Commenced, Amount No definition available.
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| X | ||||||||||
- Definition Lessee, Lease Term No definition available.
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- Definition Number of Leased Aircrafts No definition available.
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| X | ||||||||||
- Definition Number of Leased Aircrafts, Finance Lease No definition available.
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| X | ||||||||||
- Definition Number of Leased Aircrafts, Operating Lease No definition available.
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| X | ||||||||||
- Definition Number of Leased Aircrafts, Short-term No definition available.
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| X | ||||||||||
- Definition Amount of impairment loss from right-of-use asset from finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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. No definition available.
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| X | ||||||||||
- Definition Amount of loss from impairment of right-of-use asset from operating lease. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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