$ALK
ALASKA AIR GROUP, INC. Stock $alk

$alk Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000076642120000089 Filed on November 05, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q4
Revenue	$808.0M	$701.0M	$2.228B
YoY Change	-63.73%	-70.66%	7.95%
Cost Of Revenue	$495.0M	$471.0M	$969.0M
YoY Change	-48.92%	-52.33%	-3.39%
Gross Profit	$313.0M	$230.0M	$1.259B
YoY Change	-75.14%	-83.58%	18.66%
Gross Profit Margin	38.74%	32.81%	56.51%
Selling, General & Admin	$557.0M	$561.0M	$753.0M
YoY Change	-26.03%	-23.26%	9.93%
% of Gross Profit	177.96%	243.91%	59.81%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$100.0M	$105.0M	$106.0M
YoY Change	-5.66%	-0.94%	-1.85%
% of Gross Profit	31.95%	45.65%	8.42%
Operating Expenses	$754.0M	$1.272B	$1.007B
YoY Change	-25.12%	-35.33%	6.9%
Operating Profit	-$441.0M	-$571.0M	$252.0M
YoY Change	-275.0%	-235.31%	111.76%
Interest Expense	-$23.00M	-$23.00M	$2.000M
YoY Change	-1250.0%	-227.78%	-105.0%
% of Operating Profit			0.79%
Other Income/Expense, Net	$1.000M	-$18.00M	-$6.000M
YoY Change	-116.67%	200.0%	100.0%
Pretax Income	-$643.0M	-$589.0M	$243.0M
YoY Change	-364.61%	-241.59%	575.0%
Income Tax	-$196.0M	-$158.0M	$62.00M
% Of Pretax Income			25.51%
Net Earnings	-$447.0M	-$431.0M	$181.0M
YoY Change	-346.96%	-233.85%	686.96%
Net Earnings / Revenue	-55.32%	-61.48%	8.12%
Basic Earnings Per Share		-$3.49
Diluted Earnings Per Share	-$3.605M	-$3.49	$1.448M
COMMON SHARES
Basic Shares Outstanding	123.7M shares	123.6M shares	123.2M shares
Diluted Shares Outstanding		123.6M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.346B	$3.759B	$1.521B
YoY Change	119.99%	132.18%	23.06%
Cash & Equivalents	$1.370B	$1.855B	$221.0M
Short-Term Investments	$1.976B	$1.904B	$1.300B
Other Short-Term Assets	$123.0M	$328.0M	$121.0M
YoY Change	1.65%	129.37%	-3.2%
Inventory	$57.00M	$57.00M	$72.00M
Prepaid Expenses
Receivables	$480.0M	$321.0M	$323.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.006B	$4.465B	$2.037B
YoY Change	96.66%	102.77%	13.99%
LONG-TERM ASSETS
Property, Plant & Equipment	$6.211B	$6.381B	$6.902B
YoY Change	-10.01%	-6.63%	1.78%
Goodwill	$2.050B	$1.943B	$1.943B
YoY Change	5.51%	0.0%	0.0%
Intangibles	$107.0M	$107.0M	$122.0M
YoY Change	-12.3%	-13.01%	-3.94%
Long-Term Investments
YoY Change
Other Assets	$379.0M	$337.0M	$278.0M
YoY Change	36.33%	44.02%	1.46%
Total Long-Term Assets	$10.04B	$10.28B	$10.96B
YoY Change	-8.36%	-4.61%	20.07%
TOTAL ASSETS
Total Short-Term Assets	$4.006B	$4.465B	$2.037B
Total Long-Term Assets	$10.04B	$10.28B	$10.96B
Total Assets	$14.05B	$14.75B	$12.99B
YoY Change	8.1%	13.6%	19.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$108.0M	$93.00M	$146.0M
YoY Change	-26.03%	-22.5%	10.61%
Accrued Expenses	$424.0M	$406.0M	$431.0M
YoY Change	-1.62%	-14.71%	3.61%
Deferred Revenue		$1.071B	$900.0M
YoY Change			14.21%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.138B	$1.150B	$235.0M
YoY Change	384.26%	333.96%	-51.65%
Total Short-Term Liabilities	$4.293B	$4.207B	$3.201B
YoY Change	34.11%	25.73%	8.8%
LONG-TERM LIABILITIES
Long-Term Debt	$2.357B	$2.672B	$1.264B
YoY Change	86.47%	85.04%	-21.83%
Other Long-Term Liabilities	$524.0M	$476.0M	$232.0M
YoY Change	125.86%	123.47%	-44.5%
Total Long-Term Liabilities	$2.881B	$4.416B	$4.197B
YoY Change	-31.36%	12.05%	61.3%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.293B	$4.207B	$3.201B
Total Long-Term Liabilities	$2.881B	$4.416B	$4.197B
Total Liabilities	$7.174B	$8.623B	$7.398B
YoY Change	-3.03%	18.33%	33.44%
SHAREHOLDERS EQUITY
Retained Earnings	$3.764B	$4.211B	$5.133B
YoY Change	-26.67%	-15.71%	13.21%
Common Stock	$392.0M	$367.0M	$306.0M
YoY Change	28.1%	23.15%	31.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$674.0M	$674.0M	$643.0M
YoY Change	4.82%	8.53%	13.2%
Treasury Stock Shares	9.350M shares	9.350M shares	8.812M shares
Shareholders Equity	$2.988B	$3.454B	$4.331B
YoY Change
Total Liabilities & Shareholders Equity	$14.05B	$14.75B	$12.99B
YoY Change	8.1%	13.6%	19.07%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q4
OPERATING ACTIVITIES
Net Income	-$447.0M	-$431.0M	$181.0M
YoY Change	-346.96%	-233.85%	686.96%
Depreciation, Depletion And Amortization	$100.0M	$105.0M	$106.0M
YoY Change	-5.66%	-0.94%	-1.85%
Cash From Operating Activities	-$350.0M	-$205.0M	$341.0M
YoY Change	-202.64%	-158.91%	63.16%
INVESTING ACTIVITIES
Capital Expenditures	-$24.00M	-$36.00M	-$169.0M
YoY Change	-85.8%	-81.44%	-58.37%
Acquisitions
YoY Change
Other Investing Activities	$198.0M	-$607.0M	$86.00M
YoY Change	130.23%	-3893.75%	-20.37%
Cash From Investing Activities	$174.0M	-$643.0M	-$83.00M
YoY Change	-309.64%	261.24%	-72.15%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-305.0M	1.195B	-275.0M
YoY Change	10.91%	-782.86%	-1547.37%
NET CHANGE
Cash From Operating Activities	-350.0M	-205.0M	341.0M
Cash From Investing Activities	174.0M	-643.0M	-83.00M
Cash From Financing Activities	-305.0M	1.195B	-275.0M
Net Change In Cash	-481.0M	347.0M	-17.00M
YoY Change	2729.41%	-7040.0%	-75.71%
FREE CASH FLOW
Cash From Operating Activities	-$350.0M	-$205.0M	$341.0M
Capital Expenditures	-$24.00M	-$36.00M	-$169.0M
Free Cash Flow	-$326.0M	-$169.0M	$510.0M
YoY Change	-163.92%	-131.18%	-17.07%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Entity Central Index Key EntityCentralIndexKey	0000766421
	dei	Entity Central Index Key EntityCentralIndexKey	0000766421
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-8957
	dei	Entity Registrant Name EntityRegistrantName	ALASKA AIR GROUP, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	91-1292054
	dei	Entity Address Address Line1 EntityAddressAddressLine1	19300 International Boulevard,
	dei	Entity Address City Or Town EntityAddressCityOrTown	Seattle,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	WA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	98188
	dei	City Area Code CityAreaCode	(206)
	dei	Local Phone Number LocalPhoneNumber	392-5040
	dei	Security12b Title Security12bTitle	Common stock, $0.01 par value
	dei	Trading Symbol TradingSymbol	ALK
	dei	Trading Symbol TradingSymbol	ALK
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2020Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	123663778	shares
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1855000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	221000000	USD
CY2020Q3	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	1904000000	USD
CY2019Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	1300000000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	3759000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	1521000000	USD
CY2020Q3	us-gaap	Receivables Net Current ReceivablesNetCurrent	321000000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	323000000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	57000000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	72000000	USD
CY2020Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	328000000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	121000000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	4465000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	2037000000	USD
CY2020Q3	us-gaap	Flight Equipment Gross FlightEquipmentGross	7851000000	USD
CY2019Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	8549000000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	1395000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	1306000000	USD
CY2020Q3	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	595000000	USD
CY2019Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	533000000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9841000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	10388000000	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3460000000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3486000000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6381000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6902000000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1516000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1711000000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	1943000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	1943000000	USD
CY2020Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	107000000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	122000000	USD
CY2020Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	337000000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	278000000	USD
CY2020Q3	us-gaap	Other Assets OtherAssets	3903000000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	4054000000	USD
CY2020Q3	us-gaap	Assets Assets	14749000000	USD
CY2019Q4	us-gaap	Assets Assets	12993000000	USD
CY2020Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	93000000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	146000000	USD
CY2020Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	541000000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	470000000	USD
CY2020Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	1071000000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	900000000	USD
CY2020Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	406000000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	431000000	USD
CY2020Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	663000000	USD
CY2019Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	750000000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	283000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	269000000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1150000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	235000000	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	4207000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3201000000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	2672000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1264000000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1320000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1439000000	USD
CY2020Q3	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	499000000	USD
CY2019Q4	us-gaap	Deferred Tax And Other Liabilities Noncurrent DeferredTaxAndOtherLiabilitiesNoncurrent	715000000	USD
CY2020Q3	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	1520000000	USD
CY2019Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	1240000000	USD
CY2020Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	601000000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	571000000	USD
CY2020Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	476000000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	232000000	USD
CY2020Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4416000000	USD
CY2019Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	4197000000	USD
CY2020Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2020Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2020Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	400000000	shares
CY2020Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	133011377	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	131812173	shares
CY2020Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	123661433	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	123000307	shares
CY2020Q3	us-gaap	Common Stock Value CommonStockValue	1000000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	1000000	USD
CY2020Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	366000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	305000000	USD
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	9349944	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	8811866	shares
CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	674000000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	643000000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-450000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-465000000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4211000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5133000000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	3454000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4331000000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	14749000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12993000000	USD
CY2020Q3	us-gaap	Revenues Revenues	701000000	USD
CY2019Q3	us-gaap	Revenues Revenues	2389000000	USD
	us-gaap	Revenues Revenues	2758000000	USD
	us-gaap	Revenues Revenues	6553000000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	495000000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	608000000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1579000000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1732000000	USD
CY2020Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	42000000	USD
CY2019Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	46000000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	65000000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	125000000	USD
CY2020Q3	alk	Psp Grant Recognized PSPGrantRecognized	-398000000	USD
CY2019Q3	alk	Psp Grant Recognized PSPGrantRecognized	0	USD
	alk	Psp Grant Recognized PSPGrantRecognized	-760000000	USD
	alk	Psp Grant Recognized PSPGrantRecognized	0	USD
CY2020Q3	us-gaap	Fuel Costs FuelCosts	125000000	USD
CY2019Q3	us-gaap	Fuel Costs FuelCosts	486000000	USD
	us-gaap	Fuel Costs FuelCosts	568000000	USD
	us-gaap	Fuel Costs FuelCosts	1408000000	USD
CY2020Q3	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	84000000	USD
CY2019Q3	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	106000000	USD
	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	244000000	USD
	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	341000000	USD
CY2020Q3	us-gaap	Aircraft Rental AircraftRental	74000000	USD
CY2019Q3	us-gaap	Aircraft Rental AircraftRental	82000000	USD
	us-gaap	Aircraft Rental AircraftRental	229000000	USD
	us-gaap	Aircraft Rental AircraftRental	247000000	USD
CY2020Q3	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	109000000	USD
CY2019Q3	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	143000000	USD
	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	323000000	USD
	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	388000000	USD
CY2020Q3	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	36000000	USD
CY2019Q3	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	72000000	USD
	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	138000000	USD
	us-gaap	Professional And Contract Services Expense ProfessionalAndContractServicesExpense	214000000	USD
CY2020Q3	us-gaap	Selling Expense SellingExpense	24000000	USD
CY2019Q3	us-gaap	Selling Expense SellingExpense	77000000	USD
	us-gaap	Selling Expense SellingExpense	83000000	USD
	us-gaap	Selling Expense SellingExpense	236000000	USD
CY2020Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	105000000	USD
CY2019Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	106000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	320000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	317000000	USD
CY2020Q3	us-gaap	Cost Of Services Catering CostOfServicesCatering	14000000	USD
CY2019Q3	us-gaap	Cost Of Services Catering CostOfServicesCatering	57000000	USD
	us-gaap	Cost Of Services Catering CostOfServicesCatering	70000000	USD
	us-gaap	Cost Of Services Catering CostOfServicesCatering	159000000	USD
CY2020Q3	alk	Regional Carrier Expense RegionalCarrierExpense	29000000	USD
CY2019Q3	alk	Regional Carrier Expense RegionalCarrierExpense	42000000	USD
	alk	Regional Carrier Expense RegionalCarrierExpense	92000000	USD
	alk	Regional Carrier Expense RegionalCarrierExpense	125000000	USD
CY2020Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	89000000	USD
CY2019Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	137000000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	310000000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	411000000	USD
CY2020Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1000000	USD
CY2019Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	5000000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	5000000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	39000000	USD
CY2020Q3	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	121000000	USD
CY2019Q3	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	0	USD
	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	350000000	USD
	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	0	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	322000000	USD
CY2019Q3	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	322000000	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	1272000000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	1967000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	3938000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	5742000000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-571000000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	422000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-1180000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	811000000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	7000000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	11000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	23000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	31000000	USD
CY2020Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	34000000	USD
CY2019Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	18000000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	64000000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	60000000	USD
CY2020Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	4000000	USD
CY2019Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	4000000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	8000000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	11000000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5000000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3000000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	16000000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-20000000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-18000000	USD
CY2019Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-6000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-17000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-38000000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-589000000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	416000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-1197000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	773000000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-158000000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	94000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-320000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	185000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-431000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	322000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-877000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	588000000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.49
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.61
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.12
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.76
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.49
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.60
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.12
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.74
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123647000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123280000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123255000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	123330000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	123647000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124067000.000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	123255000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	124051000.000	shares
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-431000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	322000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-877000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	588000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	4000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	32000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	31000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	2000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	5000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	11000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	3000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	5000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	7000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	16000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	21000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-7000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-8000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-22000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-24000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	2000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	5000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	6000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-17000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-18000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	2000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-5000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-25000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-17000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-2000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-2000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	0	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-5000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-3000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	2000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-4000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-18000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-12000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	27000000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-423000000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	323000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-862000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	615000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	4331000000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-232000000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-17000000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	31000000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9000000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.375
CY2020Q1	us-gaap	Dividends Cash DividendsCash	45000000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	4015000000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-214000000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	24000000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2000000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	7000000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	27000000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	3861000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-431000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8000000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7000000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	9000000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	3454000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	3751000000	USD
CY2019Q1	alk	Tax Cutsand Jobs Act Reclassificationfrom Aoc Ito Retained Earnings Tax Effect TaxCutsandJobsActReclassificationfromAOCItoRetainedEarningsTaxEffect	3000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	4000000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15000000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	13000000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12000000	USD
CY2019Q1	us-gaap	Dividends Cash DividendsCash	43000000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	20000000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3000000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	3746000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	262000000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	11000000	USD
CY2019Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	12000000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9000000	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.35
CY2019Q2	us-gaap	Dividends Cash DividendsCash	43000000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	3973000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	322000000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1000000	USD
CY2019Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	28000000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7000000	USD
CY2019Q3	us-gaap	Dividends Cash DividendsCash	43000000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	20000000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	4252000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-877000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	588000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	320000000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	317000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	14000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	20000000	USD
	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	350000000	USD
	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	322000000	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	alk	Psp Grant Recognized PSPGrantRecognized	-760000000	USD
	alk	Psp Grant Recognized PSPGrantRecognized	0	USD
	alk	Proceeds From Payroll Support Program Grant ProceedsFromPayrollSupportProgramGrant	753000000	USD
	alk	Proceeds From Payroll Support Program Grant ProceedsFromPayrollSupportProgramGrant	0	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	220000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-187000000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	171000000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	244000000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	193000000	USD
	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	97000000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	0	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-65000000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-150000000	USD
	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-7000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	116000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1381000000	USD
	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	61000000	USD
	us-gaap	Payments For Flight Equipment PaymentsForFlightEquipment	286000000	USD
	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	49000000	USD
	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	125000000	USD
	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	94000000	USD
	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	116000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	204000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	527000000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	2092000000	USD
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1446000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	1520000000	USD
	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	1228000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-9000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-37000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-767000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-708000000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	2581000000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	356000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	31000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	752000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	45000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	53000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	238000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	129000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	19000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	40000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2286000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-538000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1635000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	135000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	232000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	114000000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1867000000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	249000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	38000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	48000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	0	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2000000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1855000000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	237000000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	12000000	USD
CY2019Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	12000000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1867000000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	249000000	USD
CY2020Q3	alk	Number Of Mainline Aircraft Parked NumberOfMainlineAircraftParked	64	aircraft
CY2020Q3	alk	Special Items Impairment Charges And Other SpecialItemsImpairmentChargesAndOther	121000000	USD
CY2020Q3	us-gaap	Assets Held For Sale Long Lived Fair Value Disclosure AssetsHeldForSaleLongLivedFairValueDisclosure	219000000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	335000000	USD
	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	10000000	USD
CY2020Q3	us-gaap	Restructuring Charges RestructuringCharges	322000000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	5000000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	5000000	USD
CY2020Q3	alk	Total Expected Relief From Psp Of Cares Act TotalExpectedReliefFromPSPOfCARESAct	1100000000	USD
CY2020Q3	alk	Unsecured Term Loan Through Psp Of Cares Act UnsecuredTermLoanThroughPSPOfCARESAct	290000000	USD
	alk	Proceeds From Payroll Support Program Grant ProceedsFromPayrollSupportProgramGrant	753000000	USD
CY2020Q3	alk	Psp Grant Recognized PSPGrantRecognized	-398000000	USD
	alk	Psp Grant Recognized PSPGrantRecognized	-760000000	USD
	alk	Cares Act Payroll Tax Relief CARESActPayrollTaxRelief	17000000	USD
	us-gaap	Deferred Revenue Refund Payments1 DeferredRevenueRefundPayments1	475000000	USD
	alk	Covid19 Related Credits Issued COVID19RelatedCreditsIssued	850000000	USD
CY2020Q3	alk	Covid19 Credits Issued Balance COVID19CreditsIssuedBalance	617000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	1900000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	702000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	704000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	1108000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	1139000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	54000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	55000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	1864000000	USD
CY2020Q3	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	1898000000	USD
CY2020Q3	us-gaap	Business Acquisitions Purchase Price Allocation Subsequent Years Remaining Adjustments BusinessAcquisitionsPurchasePriceAllocationSubsequentYearsRemainingAdjustments	2000000	USD
CY2019Q4	us-gaap	Business Acquisitions Purchase Price Allocation Subsequent Years Remaining Adjustments BusinessAcquisitionsPurchasePriceAllocationSubsequentYearsRemainingAdjustments	2000000	USD
CY2020Q3	alk	Unsecured Term Loan Through Psp Of Cares Act UnsecuredTermLoanThroughPSPOfCARESAct	290000000	USD
CY2019Q4	alk	Unsecured Term Loan Through Psp Of Cares Act UnsecuredTermLoanThroughPSPOfCARESAct	0	USD
CY2020Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	35000000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	8000000	USD
CY2020Q3	us-gaap	Long Term Debt LongTermDebt	3822000000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	1499000000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	1150000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	235000000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	2672000000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	1264000000	USD
CY2020Q3	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.043
CY2019Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.033
CY2020Q3	us-gaap	Long Term Debt Percentage Bearing Variable Interest Rate LongTermDebtPercentageBearingVariableInterestRate	0.019
CY2019Q4	us-gaap	Long Term Debt Percentage Bearing Variable Interest Rate LongTermDebtPercentageBearingVariableInterestRate	0.029
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	2600000000	USD
CY2020Q3	alk	Unsecured Term Loan Through Psp Of Cares Act UnsecuredTermLoanThroughPSPOfCARESAct	290000000	USD
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	400000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	238000000	USD
CY2020Q3	alk	Unsecured Term Loan Through Psp Of Cares Act UnsecuredTermLoanThroughPSPOfCARESAct	290000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	73000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1201000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	393000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	357000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	265000000	USD
CY2020Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1568000000	USD
CY2020Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3857000000	USD
CY2020Q3	alk	Line Of Credit Facility Number Of Credit Facilities LineOfCreditFacilityNumberOfCreditFacilities	3	credit_facility
CY2020Q3	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	461000000	USD
CY2020Q3	alk	Line Of Credit Facility Number Of Credit Facilities LineOfCreditFacilityNumberOfCreditFacilities	3	credit_facility
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	400000000	USD
	alk	Line Of Credit Facility Number Drawn In Current Period LineOfCreditFacilityNumberDrawnInCurrentPeriod	2	credit_facility
CY2020Q3	alk	Line Of Credit Facility Number Of Credit Facilities LineOfCreditFacilityNumberOfCreditFacilities	3	credit_facility
CY2020Q3	alk	Line Of Credit Facility Asset Restrictions Unrestricted Cash And Marketable Securities LineOfCreditFacilityAssetRestrictionsUnrestrictedCashAndMarketableSecurities	500000000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	25000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	9000000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	453000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	469000000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-22000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-5000000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-450000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-465000000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2020Q3	us-gaap	Revenues Revenues	701000000	USD
CY2020Q3	alk	Operating Expenses Excluding Fuel OperatingExpensesExcludingFuel	1147000000	USD
CY2020Q3	us-gaap	Fuel Costs FuelCosts	125000000	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	1272000000	USD
CY2020Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	7000000	USD
CY2020Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	34000000	USD
CY2020Q3	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	4000000	USD
CY2020Q3	alk	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	5000000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-18000000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-589000000	USD
CY2019Q3	alk	Operating Expenses Excluding Fuel OperatingExpensesExcludingFuel	1481000000	USD
CY2019Q3	us-gaap	Revenues Revenues	2389000000	USD
CY2019Q3	us-gaap	Fuel Costs FuelCosts	486000000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	1967000000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	11000000	USD
CY2019Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	18000000	USD
CY2019Q3	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	4000000	USD
CY2019Q3	alk	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-3000000	USD
CY2019Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-6000000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	416000000	USD
	us-gaap	Revenues Revenues	2758000000	USD
	alk	Operating Expenses Excluding Fuel OperatingExpensesExcludingFuel	3370000000	USD
	us-gaap	Fuel Costs FuelCosts	568000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	3938000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	23000000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	64000000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	8000000	USD
	alk	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	16000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-17000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-1197000000	USD
	us-gaap	Revenues Revenues	6553000000	USD
	alk	Operating Expenses Excluding Fuel OperatingExpensesExcludingFuel	4334000000	USD
	us-gaap	Fuel Costs FuelCosts	1408000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	5742000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	31000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	31000000	USD
	us-gaap	Interest Expense InterestExpense	60000000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	60000000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	11000000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	11000000	USD
	alk	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-20000000	USD
	alk	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-20000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-38000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	773000000	USD
CY2020Q3	us-gaap	Assets Assets	14749000000	USD
CY2019Q4	us-gaap	Assets Assets	12993000000	USD

Files In Submission

Name	View Source	Status
0000766421-20-000089-index-headers.html	Edgar Link	pending
0000766421-20-000089-index.html	Edgar Link	pending
0000766421-20-000089.txt	Edgar Link	pending
0000766421-20-000089-xbrl.zip	Edgar Link	pending
alk-20200930.htm	Edgar Link	pending
alk-20200930.xsd	Edgar Link	pending
alk-20200930_cal.xml	Edgar Link	unprocessable
alk-20200930_def.xml	Edgar Link	unprocessable
alk-20200930_htm.xml	Edgar Link	completed
alk-20200930_lab.xml	Edgar Link	unprocessable
alk-20200930_pre.xml	Edgar Link	unprocessable
alk10-q32020ex311.htm	Edgar Link	pending
alk10-q32020ex312.htm	Edgar Link	pending
alk10-q32020ex321.htm	Edgar Link	pending
alk10-q32020ex322.htm	Edgar Link	pending
ex101-creditagreementx.htm	Edgar Link	pending
ex102-amendedandrestat.htm	Edgar Link	pending
ex103-loanprogramxrest.htm	Edgar Link	pending
ex420-closingdatewarra.htm	Edgar Link	pending
ex421-warrantagreement.htm	Edgar Link	pending
ex422-loyaltyprogramal.htm	Edgar Link	pending
ex423-alaskaairlinesin.htm	Edgar Link	pending
ex424-horizonaraircraf.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image_01a.jpg	Edgar Link	pending
image_11a.jpg	Edgar Link	pending
image_21a.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$ALK
ALASKA AIR GROUP, INC. Stock $alk

2020 Q4 Form 10-Q Financial Statement

#000076642120000089 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALK ALASKA AIR GROUP, INC. Stock $alk

2020 Q4 Form 10-Q Financial Statement

#000076642120000089 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ALK
ALASKA AIR GROUP, INC. Stock $alk