LEASES - Narratives (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2019
aircraft
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
|
| Lessee, Lease, Description [Line Items] | |||
| Number of lease aircrafts (aircraft) | 342 | ||
| Number of lease aircrafts, finance (aircraft) | 31 | ||
| Number of lease aircrafts, operating (aircraft) | 14 | ||
| Number of lease aircrafts, short-term (aircraft) | 297 | ||
| Rent expense related to operating leases | $ | $ 959 | $ 804 | |
| Minimum | |||
| Lessee, Lease, Description [Line Items] | |||
| Lessee, Lease Term | 1 month | ||
| Maximum | |||
| Lessee, Lease, Description [Line Items] | |||
| Lessee, Lease Term | 190 years | ||
| X | ||||||||||
- Definition Lessee, Lease Term No definition available.
|
| X | ||||||||||
- Definition Number of Leased Aircrafts No definition available.
|
| X | ||||||||||
- Definition Number of Leased Aircrafts, Finance Lease No definition available.
|
| X | ||||||||||
- Definition Number of Leased Aircrafts, Operating Lease No definition available.
|
| X | ||||||||||
- Definition Number of Leased Aircrafts, Short-term No definition available.
|
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
|
| 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.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|