XML 70 R58.htm IDEA: XBRL DOCUMENT
v3.25.1

SPECIAL ITEMS - Operating And Non-Operating (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Unusual or Infrequent Item, or Both [Line Items] |  |
Special items - operating | $ 91 | $ 34
Labor and other |  |
Unusual or Infrequent Item, or Both [Line Items] |  |
Special items - operating | 51 | 26
Integration costs |  |
Unusual or Infrequent Item, or Both [Line Items] |  |
Special items - operating | $ 40 | $ 8

X
- Definition Special Items - Net, Operating Income (Expense) + References No definition available. + Details
Name: | alk_SpecialItemsNetOperatingIncomeExpense
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_UnusualOrInfrequentItemLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=alk_LaborAndOtherExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=alk_IntegrationCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |