XML 67 R23.htm IDEA: XBRL DOCUMENT
v3.10.0.1

COMMITMENTS (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Rental Payments for Operating Leases and Unrecorded Unconditional Purchase Obligtaions | Future minimum payments for commitments as of June 30, 2018 (in millions):
| Aircraft Leases |  | Facility Leases |  | Aircraft Commitments(a) |  | Capacity Purchase Agreements (b) |  | Aircraft Maintenance Deposits
Remainder of 2018 | $ | 177 |  |  | $ | 38 |  |  | $ | 467 |  |  | $ | 67 |  |  | $ | 32 |
2019 | 349 |  |  | 68 |  |  | 558 |  |  | 138 |  |  | 65 |
2020 | 323 |  |  | 61 |  |  | 515 |  |  | 145 |  |  | 68 |
2021 | 282 |  |  | 52 |  |  | 562 |  |  | 166 |  |  | 64 |
2022 | 264 |  |  | 33 |  |  | 304 |  |  | 174 |  |  | 52 |
Thereafter | 1,071 |  |  | 139 |  |  | 141 |  |  | 1,205 |  |  | 38 |
Total | $ | 2,466 |  |  | $ | 391 |  |  | $ | 2,547 |  |  | $ | 1,895 |  |  | $ | 319 |
(a) | Includes non-cancelable contractual commitments for aircraft and engines, buyer furnished equipment, and aircraft maintenance and parts management.
(b) | Includes all non-aircraft lease costs associated with capacity purchase agreements.

X
- Definition Schedule of Future Minimum Rental Payments for Operating Leases and Unrecorded Unconditional Purchase Obligtaions [Table Text Block] + References No definition available. + Details
Name: | alk_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesAndUnrecordedUnconditionalPurchaseObligationsTableTextBlock
Namespace Prefix: | alk_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration