XML 37 R26.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

FLEET TRANSITION (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Impaired Long-Lived Assets [Line Items] |  |
Special items - Impairment charges and other | $ 26 | $ 13

X
- Definition Special items - Impairment charges and other + References No definition available. + Details
Name: | alk_SpecialItemsImpairmentChargesAndOther
Namespace Prefix: | alk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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