XML 62 R49.htm IDEA: XBRL DOCUMENT
v3.26.1

SPECIAL ITEMS (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Unusual or Infrequent Items, or Both [Abstract] |  |
Special items, expenses | $ 35 | $ 91

X
- Definition Special Items - Net, Operating Expense + References No definition available. + Details
Name: | alk_SpecialItemsNetOperatingExpense
Namespace Prefix: | alk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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