XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.23.1

SHAREHOLDERS' EQUITY , WARRANT ACTIVITY (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Mar. 31, 2023
Class of Warrant or Right [Line Items] |  |
Class of Warrant or Right, Outstanding |  | 1,882,517
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 39.06
US Treasury CARES Act Loan [Member] |  |
Class of Warrant or Right [Line Items] |  |
Adjustments to Additional Paid in Capital, Warrant Issued | $ 30 |
US Treasury CARES Act Loan [Member] |  |
Class of Warrant or Right [Line Items] |  |
Class of Warrant or Right, Outstanding |  | 427,080
CARES Act PSP [Domain] |  |
Class of Warrant or Right [Line Items] |  |
Class of Warrant or Right, Outstanding |  | 1,455,437

X
- Definition Amount of increase in additional paid in capital (APIC) resulting from the issuance of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 25 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481284/470-20-25-2 + Details
Name: | us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

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_ClassOfWarrantOrRightLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=alk_USTreasuryCARESActLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=alk_USTreasuryCARESActLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=alk_CARESActPSPDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |