XML 64 R46.htm IDEA: XBRL DOCUMENT
v3.24.0.1

REVENUE FROM CONTRACTS WITH CUSTOMERS Narrative (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) aircraft | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Deferred Revenue Arrangement [Line Items] |  |  |
Percent of Mileage Breakage | 17.40% | 17.40% |
Contract cost recognized | $ 334 | $ 311 | $ 90
Receivable | $ 383 | 296 |
Number of Partner AIrlines | aircraft | 30 |  |
Credit Card Receivables | $ 243 | 201 |
Prepaid Expenses and Other Current Assets [Member] |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |
Capitalized Contract Cost, Net | 35 | 33 |
Passenger Revenue [Member] |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |
Contract with Customer, Liability, Revenue Recognized | 823 | 700 |
Mileage Plan Revenue [Member] |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |
Receivable | $ 102 | $ 83 |

X
- Definition Number of Partner AIrlines + References No definition available. + Details
Name: | alk_NumberofPartnerAIrlines
Namespace Prefix: | alk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent of Mileage Breakage + References No definition available. + Details
Name: | alk_PercentofMileageBreakage
Namespace Prefix: | alk_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
Name: | us-gaap_CapitalizedContractCostNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-8 + Details
Name: | us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total costs of sales and operating expenses for the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_CostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amounts receivable from issuing a card to individuals or businesses that allows someone to make a purchase on borrowed money. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_CreditCardReceivables
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_DeferredRevenueArrangementLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481372/852-10-55-10 + Details
Name: | us-gaap_ReceivablesNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerSalesChannelAxis=alk_PassengerRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ContractWithCustomerSalesChannelAxis=alk_MileagePlanRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |