$UAL
United Airlines Holdings, Inc. Stock $ual

$ual Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000010051720000010 Filed on February 25, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$10.89B	$10.49B	$11.00B
YoY Change	3.78%	11.16%	11.39%
Cost Of Revenue	$4.166B	$4.169B	$4.430B
YoY Change	-0.07%	11.03%	24.54%
Gross Profit	$6.722B	$6.322B	$6.573B
YoY Change	6.33%	10.99%	3.64%
Gross Profit Margin	61.74%	60.26%	59.74%
Selling, General & Admin	$3.495B	$3.320B	$3.357B
YoY Change	5.27%	9.5%	6.17%
% of Gross Profit	51.99%	52.52%	51.07%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$606.0M	$558.0M	$545.0M
YoY Change	8.6%	14.81%	-1.98%
% of Gross Profit	9.02%	8.83%	8.29%
Operating Expenses	$5.731B	$5.386B	$5.369B
YoY Change	6.41%	8.98%	4.17%
Operating Profit	$861.0M	$635.0M	$1.187B
YoY Change	35.59%	-18.17%	4.31%
Interest Expense	$42.00M	-$128.0M	$172.0M
YoY Change	-132.81%	25.49%	1.78%
% of Operating Profit	4.88%	-20.16%	14.49%
Other Income/Expense, Net	-$59.00M	$46.00M	-$129.0M
YoY Change	-228.26%	-355.56%	-11.03%
Pretax Income	$844.0M	$553.0M	$1.058B
YoY Change	52.62%	-8.29%	6.55%
Income Tax	$203.0M	$97.00M	$225.0M
% Of Pretax Income	24.05%	17.54%	21.27%
Net Earnings	$641.0M	$461.0M	$833.0M
YoY Change	39.05%	-20.38%	29.15%
Net Earnings / Revenue	5.89%	4.39%	7.57%
Basic Earnings Per Share	$2.54	$1.70	$3.06
Diluted Earnings Per Share	$2.53	$1.69	$3.05
COMMON SHARES
Basic Shares Outstanding	253.0M shares	272.5M shares	272.4M shares
Diluted Shares Outstanding			273.6M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$4.944B	$3.950B	$4.935B
YoY Change	25.16%	4.0%	14.02%
Cash & Equivalents	$2.762B	$1.694B	$2.621B
Short-Term Investments	$2.182B	$2.256B	$2.314B
Other Short-Term Assets	$814.0M	$733.0M	$973.0M
YoY Change	11.05%	-31.56%	-3.57%
Inventory	$1.072B	$985.0M	$1.011B
Prepaid Expenses
Receivables	$1.364B	$1.426B	$1.752B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$8.194B	$7.094B	$8.671B
YoY Change	15.51%	-0.55%	10.08%
LONG-TERM ASSETS
Property, Plant & Equipment	$30.17B	$27.40B	$27.31B
YoY Change	10.11%	4.54%	6.55%
Goodwill	$4.523B	$4.523B	$4.523B
YoY Change	0.0%	0.0%	0.0%
Intangibles	$3.009B	$3.159B	$3.382B
YoY Change	-4.75%	-10.74%	-4.95%
Long-Term Investments	$126.0M	$144.0M
YoY Change	-12.5%
Other Assets	$9.489B	$9.269B	$8.858B
YoY Change	2.37%	2.93%	-2.22%
Total Long-Term Assets	$44.42B	$41.93B	$36.17B
YoY Change	5.93%	19.08%	4.26%
TOTAL ASSETS
Total Short-Term Assets	$8.194B	$7.094B	$8.671B
Total Long-Term Assets	$44.42B	$41.93B	$36.17B
Total Assets	$52.61B	$49.02B	$44.84B
YoY Change	7.32%	15.77%	5.34%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.703B	$2.363B	$2.581B
YoY Change	14.39%	7.6%	15.69%
Accrued Expenses	$2.957B	$2.903B	$2.004B
YoY Change	1.86%	34.03%	1.06%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.407B	$1.230B	$910.0M
YoY Change	14.39%	-21.41%	-39.97%
Total Short-Term Liabilities	$14.94B	$13.84B	$13.68B
YoY Change	7.94%	8.43%	4.56%
LONG-TERM LIABILITIES
Long-Term Debt	$13.15B	$12.22B	$12.22B
YoY Change	7.61%	4.37%	7.8%
Other Long-Term Liabilities	$1.024B	$1.010B	$8.350B
YoY Change	1.39%	-87.61%	1.75%
Total Long-Term Liabilities	$14.17B	$13.23B	$20.57B
YoY Change	7.14%	-33.39%	5.26%
TOTAL LIABILITIES
Total Short-Term Liabilities	$14.94B	$13.84B	$13.68B
Total Long-Term Liabilities	$14.17B	$13.23B	$20.57B
Total Liabilities	$29.11B	$27.06B	$34.25B
YoY Change	7.55%	-17.02%	4.98%
SHAREHOLDERS EQUITY
Retained Earnings	$9.716B	$6.715B	$6.203B
YoY Change	44.69%	47.61%	24.28%
Common Stock	$6.132B	$6.123B	$6.108B
YoY Change	0.15%	0.36%	-7.37%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.599B	$1.993B	$1.753B
YoY Change	80.58%	159.17%	-2.12%
Treasury Stock Shares
Shareholders Equity	$11.53B	$10.04B	$9.518B
YoY Change
Total Liabilities & Shareholders Equity	$52.61B	$49.02B	$44.84B
YoY Change	7.32%	15.77%	5.34%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$641.0M	$461.0M	$833.0M
YoY Change	39.05%	-20.38%	29.15%
Depreciation, Depletion And Amortization	$606.0M	$558.0M	$545.0M
YoY Change	8.6%	14.81%	-1.98%
Cash From Operating Activities	$1.181B	$1.129B	$883.0M
YoY Change	4.61%	43.09%	53.03%
INVESTING ACTIVITIES
Capital Expenditures	-$1.192B	-$1.574B	-$825.0M
YoY Change	-24.27%	62.27%	-26.34%
Acquisitions
YoY Change
Other Investing Activities	-$137.0M	-$374.0M	-$29.00M
YoY Change	-63.37%	-409.09%	-81.41%
Cash From Investing Activities	-$1.329B	-$1.948B	-$854.0M
YoY Change	-31.78%	129.45%	-33.07%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-47.00M	-108.0M	-294.0M
YoY Change	-56.48%	-67.07%	-266.1%
NET CHANGE
Cash From Operating Activities	1.181B	1.129B	883.0M
Cash From Investing Activities	-1.329B	-1.948B	-854.0M
Cash From Financing Activities	-47.00M	-108.0M	-294.0M
Net Change In Cash	-195.0M	-927.0M	-265.0M
YoY Change	-78.96%	138.92%	-49.23%
FREE CASH FLOW
Cash From Operating Activities	$1.181B	$1.129B	$883.0M
Capital Expenditures	-$1.192B	-$1.574B	-$825.0M
Free Cash Flow	$2.373B	$2.703B	$1.708B
YoY Change	-12.21%	53.67%	0.65%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	269914769	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	251216381	shares
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000100517
CY2018Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	412000000	USD
CY2019Q4	us-gaap	Airline Related Inventory Valuation Reserves AirlineRelatedInventoryValuationReserves	425000000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	8000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9000000	USD
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-06033
CY2019	dei	Entity Registrant Name EntityRegistrantName	United Airlines Holdings, Inc.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	36-2675207
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	233 South Wacker Drive,
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago,
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60606
CY2019	dei	Local Phone Number LocalPhoneNumber	825-4000
CY2019	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2019	dei	Trading Symbol TradingSymbol	UAL
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	City Area Code CityAreaCode	(872)
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	247951116	shares
CY2018	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1767000000	USD
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	5801000000	USD
CY2019	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1794000000	USD
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	21100000000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	43259000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	41303000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	37784000000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	12071000000	USD
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	11458000000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	10941000000	USD
CY2019	us-gaap	Fuel Costs FuelCosts	8953000000	USD
CY2018	us-gaap	Fuel Costs FuelCosts	9307000000	USD
CY2017	us-gaap	Fuel Costs FuelCosts	6913000000	USD
CY2019	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	2849000000	USD
CY2018	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	2649000000	USD
CY2017	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	2268000000	USD
CY2019	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	2543000000	USD
CY2018	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	2449000000	USD
CY2017	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	2310000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2288000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2165000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2096000000	USD
CY2017	us-gaap	Aircraft Maintenance Materials And Repairs AircraftMaintenanceMaterialsAndRepairs	1856000000	USD
CY2019	us-gaap	Selling Expense SellingExpense	1651000000	USD
CY2018	us-gaap	Selling Expense SellingExpense	1558000000	USD
CY2017	us-gaap	Selling Expense SellingExpense	1435000000	USD
CY2019	us-gaap	Aircraft Rental AircraftRental	288000000	USD
CY2018	us-gaap	Aircraft Rental AircraftRental	433000000	USD
CY2017	us-gaap	Aircraft Rental AircraftRental	621000000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	246000000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	487000000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	176000000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6275000000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	38958000000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	5550000000	USD
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	38074000000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	34166000000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	4301000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	3229000000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	3618000000	USD
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	731000000	USD
CY2018	us-gaap	Interest Costs Incurred InterestCostsIncurred	670000000	USD
CY2017	us-gaap	Interest Costs Incurred InterestCostsIncurred	626000000	USD
CY2019	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	85000000	USD
CY2018	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	65000000	USD
CY2017	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	74000000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	133000000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	101000000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	57000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	153000000	USD
CY2018	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-5000000	USD
CY2017	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-27000000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-72000000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-100000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-387000000	USD
CY2018	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-581000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-595000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3914000000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2648000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3023000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	905000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	526000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	880000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3009000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	2122000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	2143000000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.63
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.70
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.08
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.58
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.67
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.06
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3009000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	2122000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	2143000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-80000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-342000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	195000000	USD
CY2019	ual	Other Comprehensive Income Investments And Other Net Of Tax OtherComprehensiveIncomeInvestmentsAndOtherNetOfTax	5000000	USD
CY2018	ual	Other Comprehensive Income Investments And Other Net Of Tax OtherComprehensiveIncomeInvestmentsAndOtherNetOfTax	-4000000	USD
CY2017	ual	Other Comprehensive Income Investments And Other Net Of Tax OtherComprehensiveIncomeInvestmentsAndOtherNetOfTax	-5000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	85000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	338000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-200000000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3094000000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2460000000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1943000000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2762000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1694000000	USD
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	2182000000	USD
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	2256000000	USD
CY2019Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1364000000	USD
CY2018Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1426000000	USD
CY2019Q4	us-gaap	Airline Related Inventory Net AirlineRelatedInventoryNet	1072000000	USD
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CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	814000000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	733000000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	8194000000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	7094000000	USD
CY2019Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	35421000000	USD
CY2018Q4	us-gaap	Flight Equipment Gross FlightEquipmentGross	32599000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	7926000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	6889000000	USD
CY2019Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	1360000000	USD
CY2018Q4	us-gaap	Deposits On Flight Equipment DepositsOnFlightEquipment	1177000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	44707000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	40665000000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	14537000000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	13266000000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	30170000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	27399000000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4758000000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5262000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4523000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	686000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	719000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	4523000000	USD
CY2019Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	1446000000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3009000000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3159000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	106000000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	105000000	USD
CY2019Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	671000000	USD
CY2018Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	516000000	USD
CY2019Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	1180000000	USD
CY2018Q4	us-gaap	Investments And Other Noncurrent Assets InvestmentsAndOtherNoncurrentAssets	966000000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	9489000000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	9269000000	USD
CY2019Q4	us-gaap	Assets Assets	52611000000	USD
CY2018Q4	us-gaap	Assets Assets	49024000000	USD
CY2019Q4	ual	Contract With Customer Liability Current Advance Ticket Sales ContractWithCustomerLiabilityCurrentAdvanceTicketSales	4819000000	USD
CY2018Q4	ual	Contract With Customer Liability Current Advance Ticket Sales ContractWithCustomerLiabilityCurrentAdvanceTicketSales	4381000000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2703000000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2363000000	USD
CY2019Q4	ual	Contract With Customer Liability Current Frequent Flyer ContractWithCustomerLiabilityCurrentFrequentFlyer	2440000000	USD
CY2018Q4	ual	Contract With Customer Liability Current Frequent Flyer ContractWithCustomerLiabilityCurrentFrequentFlyer	2286000000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	2271000000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	2184000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1407000000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1230000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	46000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	123000000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	566000000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	553000000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	14938000000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	13839000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	13145000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	12215000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	220000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	224000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	4946000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5276000000	USD
CY2019Q4	ual	Contract With Customer Liability Noncurrent Frequent Flyer ContractWithCustomerLiabilityNoncurrentFrequentFlyer	2836000000	USD
CY2018Q4	ual	Contract With Customer Liability Noncurrent Frequent Flyer ContractWithCustomerLiabilityNoncurrentFrequentFlyer	2719000000	USD
CY2019Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	789000000	USD
CY2018Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1295000000	USD
CY2018Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	1576000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	1736000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	828000000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1024000000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1010000000	USD
CY2019Q4	ual	Other Liabilities And Deferred Credits Noncurrent OtherLiabilitiesAndDeferredCreditsNoncurrent	7831000000	USD
CY2018Q4	ual	Other Liabilities And Deferred Credits Noncurrent OtherLiabilitiesAndDeferredCreditsNoncurrent	7428000000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	3000000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	3000000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6129000000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	6120000000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3599000000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1993000000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	9716000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6715000000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-718000000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-803000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	11531000000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	10042000000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	52611000000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	49024000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3009000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	2122000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	2143000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	882000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	512000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	957000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2288000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2165000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2096000000	USD
CY2019	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	175000000	USD
CY2018	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	416000000	USD
CY2017	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	35000000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	153000000	USD
CY2018	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-5000000	USD
CY2017	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	USD
CY2018	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	139000000	USD
CY2017	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	2000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-79000000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-156000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-163000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4560000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	185000000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	161000000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	142000000	USD
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-44000000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-17000000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	73000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	252000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-265000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	432000000	USD
CY2019	ual	Increase Decrease In Contract With Customer Liability Advance Ticket Sales IncreaseDecreaseInContractWithCustomerLiabilityAdvanceTicketSales	438000000	USD
CY2018	ual	Increase Decrease In Contract With Customer Liability Advance Ticket Sales IncreaseDecreaseInContractWithCustomerLiabilityAdvanceTicketSales	441000000	USD
CY2017	ual	Increase Decrease In Contract With Customer Liability Advance Ticket Sales IncreaseDecreaseInContractWithCustomerLiabilityAdvanceTicketSales	145000000	USD
CY2019	ual	Increase Decreasein Contractwith Customer Liability Frequent Flyer IncreaseDecreaseinContractwithCustomerLiabilityFrequentFlyer	271000000	USD
CY2018	ual	Increase Decreasein Contractwith Customer Liability Frequent Flyer IncreaseDecreaseinContractwithCustomerLiabilityFrequentFlyer	222000000	USD
CY2017	ual	Increase Decreasein Contractwith Customer Liability Frequent Flyer IncreaseDecreaseinContractwithCustomerLiabilityFrequentFlyer	-107000000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	324000000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	130000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	66000000	USD
CY2019	ual	Increase Decrease In Advanced Purchase Of Miles IncreaseDecreaseInAdvancedPurchaseOfMiles	0	USD
CY2018	ual	Increase Decrease In Advanced Purchase Of Miles IncreaseDecreaseInAdvancedPurchaseOfMiles	0	USD
CY2017	ual	Increase Decrease In Advanced Purchase Of Miles IncreaseDecreaseInAdvancedPurchaseOfMiles	-942000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-302000000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-292000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-556000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6909000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6164000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3474000000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4528000000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4070000000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3870000000	USD
CY2019	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2897000000	USD
CY2018	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	2552000000	USD
CY2017	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	3241000000	USD
CY2019	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	2996000000	USD
CY2018	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	2616000000	USD
CY2017	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	3177000000	USD
CY2019	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	174000000	USD
CY2018	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	466000000	USD
CY2017	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	30000000	USD
CY2019	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	36000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-4455000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3803000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1645000000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1235000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1844000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1847000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1594000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2537000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1240000000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1727000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	901000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	151000000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	79000000	USD
CY2017	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	84000000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	61000000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	37000000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	80000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-30000000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-17000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-11000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1280000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1501000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-383000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1069000000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	208000000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-712000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1799000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1591000000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2303000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2868000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1799000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1591000000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	493000000	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	143000000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	897000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	498000000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	663000000	USD
CY2017	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	319000000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	22000000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	17000000	USD
CY2017	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	16000000	USD
CY2019	ual	Lease Conversions From Operating Lease Recorded Property Plant And Equipment LeaseConversionsFromOperatingLeaseRecordedPropertyPlantAndEquipment	-2000000	USD
CY2018	ual	Lease Conversions From Operating Lease Recorded Property Plant And Equipment LeaseConversionsFromOperatingLeaseRecordedPropertyPlantAndEquipment	52000000	USD
CY2017	ual	Lease Conversions From Operating Lease Recorded Property Plant And Equipment LeaseConversionsFromOperatingLeaseRecordedPropertyPlantAndEquipment	0	USD
CY2019	ual	Termination Of Maintenance Service Agreement Noncash TerminationOfMaintenanceServiceAgreementNoncash	0	USD
CY2017	ual	Termination Of Maintenance Service Agreement Noncash TerminationOfMaintenanceServiceAgreementNoncash	0	USD
CY2019	ual	Equity Interest Received In Consideration For Bankruptcy Claims EquityInterestReceivedInConsiderationForBankruptcyClaims	0	USD
CY2018	ual	Equity Interest Received In Consideration For Bankruptcy Claims EquityInterestReceivedInConsiderationForBankruptcyClaims	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	338000000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	60000000	USD
CY2018	ual	Termination Of Maintenance Service Agreement Noncash TerminationOfMaintenanceServiceAgreementNoncash	163000000	USD
CY2017	ual	Equity Interest Received In Consideration For Bankruptcy Claims EquityInterestReceivedInConsiderationForBankruptcyClaims	92000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	648000000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	651000000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	571000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29000000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	19000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	20000000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	8574000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	2143000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-200000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	56000000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2000000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1844000000	USD
CY2017	us-gaap	Treasury Stock Retired Cost Method Amount TreasuryStockRetiredCostMethodAmount	0	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-12000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	0	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-55000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	8788000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	2122000000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1250000000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-16000000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	0	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	10042000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	3009000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	85000000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	66000000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1641000000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-30000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	11531000000	USD
CY2019	ual	Lease Conversions From Operating Lease Recorded Property Plant And Equipment LeaseConversionsFromOperatingLeaseRecordedPropertyPlantAndEquipment	-2000000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates—</span><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the amounts reported in these financial statements and accompanying notes. Actual results could differ from those estimates.</span></div>
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	43259000000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	41303000000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	37784000000	USD
CY2019	us-gaap	Revenue Performance Obligation Description Of Timing RevenuePerformanceObligationDescriptionOfTiming	P2Y
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2762000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1694000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1482000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	106000000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	105000000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	91000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2868000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1799000000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1591000000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	67000000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	422000000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	359000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	4523000000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	4523000000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	2693000000	USD
CY2018Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	2783000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1756000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1440000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	1756000000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1380000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	60000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	79000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	55000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	50000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	40000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	37000000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	32000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	212000000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	211000000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	217000000	USD
CY2018	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	2649000000	USD
CY2017	us-gaap	Airline Capacity Purchase Arrangements AirlineCapacityPurchaseArrangements	2268000000	USD
CY2018	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	2449000000	USD
CY2017	us-gaap	Landing Fees And Other Rentals LandingFeesAndOtherRentals	2310000000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2165000000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2096000000	USD
CY2018	us-gaap	Interest Expense InterestExpense	670000000	USD
CY2017	us-gaap	Interest Expense InterestExpense	626000000	USD
CY2018	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	65000000	USD
CY2017	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	74000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	526000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	880000000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	2122000000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	2143000000	USD
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.70
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.08
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.67
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.06
CY2018Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	1426000000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	733000000	USD
CY2018Q4	ual	Finance Leases Lessee Balance Sheet Assets By Major Class Flight Equipment Gross FinanceLeasesLesseeBalanceSheetAssetsByMajorClassFlightEquipmentGross	32599000000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	6889000000	USD
CY2018Q4	ual	Finance Leases Lessee Balance Sheet Assets By Major Class Accumulated Depreciation FinanceLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDepreciation	13266000000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	5262000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	123000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	719000000	USD
CY2018Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	553000000	USD
CY2018Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	224000000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	5276000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	828000000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1010000000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6715000000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6164000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3474000000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	4070000000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3870000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1594000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2537000000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	79000000	USD
CY2017	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	84000000	USD
CY2019	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	19200000	shares
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1600000000	USD
CY2017Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	3000000000.0	USD
CY2019Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	3000000000.0	USD
CY2019Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	3100000000	USD
CY2019Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	8000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	2	shares
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	250000000	shares
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3009000000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2122000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2143000000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	258800000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	275500000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	302700000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1100000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1200000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	900000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	259900000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	276700000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303600000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	11.63
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.70
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.08
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	11.58
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.67
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.06
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	100000000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	101000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	73000000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	77000000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	99000000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	70000000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	76000000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	700000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	200000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	82.12
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	56.89
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	11000000	USD
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	6000000	USD
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y3M18D
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y8M12D
CY2016Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	-26000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-74000000	USD
CY2017	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-239000000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-21000000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-39000000	USD
CY2017Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	39000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	83000000	USD
CY2018	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	289000000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-13000000	USD
CY2018	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-49000000	USD
CY2018	ual	Reclassification From Accumulated Other Comprehensive Income To Retained Earnings.Current Period Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarnings.CurrentPeriodTax	-1000000	USD
CY2018	ual	Reclassification From Accumulated Other Comprehensive Income To Retained Earnings Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsCurrentPeriodNetOfTax	-6000000	USD
CY2018Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	136000000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	24000000	USD
CY2019	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	88000000	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	0	USD
CY2019	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	3000000	USD
CY2019Q4	us-gaap	Aoci Tax Attributable To Parent AociTaxAttributableToParent	160000000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	822000000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	556000000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1058000000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	50000000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	29000000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	30000000	USD
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-90000000	USD
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-84000000	USD
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-43000000	USD
CY2019	ual	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	90000000	USD
CY2018	ual	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	4000000	USD
CY2017	ual	Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income Amount EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	0	USD
CY2019	ual	Effective Income Tax Rate Reconciliation Foreign Income Taxes EffectiveIncomeTaxRateReconciliationForeignIncomeTaxes	1000000	USD
CY2018	ual	Effective Income Tax Rate Reconciliation Foreign Income Taxes EffectiveIncomeTaxRateReconciliationForeignIncomeTaxes	2000000	USD
CY2017	ual	Effective Income Tax Rate Reconciliation Foreign Income Taxes EffectiveIncomeTaxRateReconciliationForeignIncomeTaxes	3000000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	12000000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	12000000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Meals And Entertainment IncomeTaxReconciliationNondeductibleExpenseMealsAndEntertainment	17000000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	-5000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	880000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1232000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	715000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	885000000	USD
CY2019Q4	ual	Deferred Tax Asset Leasing Arrangements DeferredTaxAssetLeasingArrangements	1256000000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	-189000000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	3000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	12000000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-4000000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-3000000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-16000000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	24000000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	12000000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	8000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	905000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	526000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	880000000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	23000000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	14000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-77000000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	882000000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	512000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	957000000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	905000000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	526000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	695000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	398000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1287000000	USD
CY2018Q4	ual	Deferred Tax Asset Leasing Arrangements DeferredTaxAssetLeasingArrangements	1338000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	165000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	229000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	58000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	59000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	4060000000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	4023000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	4011000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	2929000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	1061000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	1173000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	724000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	749000000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5796000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	5196000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	5137000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	4286000000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4851000000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	1736000000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	828000000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Not Subject To Expiration DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration	1300000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	53000000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	39000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	21000000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	53000000	USD
CY2019	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	-597000000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	0	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	6161000000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	4714000000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	3614000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	14733000000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	13636000000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	181000000	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	191000000	USD
CY2019	ual	Defined Benefit Plan Profit Sharing And Payroll Tax Expense DefinedBenefitPlanProfitSharingAndPayrollTaxExpense	491000000	USD
CY2018	ual	Defined Benefit Plan Profit Sharing And Payroll Tax Expense DefinedBenefitPlanProfitSharingAndPayrollTaxExpense	334000000	USD
CY2017	ual	Defined Benefit Plan Profit Sharing And Payroll Tax Expense DefinedBenefitPlanProfitSharingAndPayrollTaxExpense	349000000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	126000000	USD
CY2018	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	44000000	USD
CY2017	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	24000000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	32000000	USD
CY2018	us-gaap	Sublease Income SubleaseIncome	38000000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1407000000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	1230000000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	13145000000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	12215000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	1038000000	USD
CY2018	us-gaap	Operating Lease Cost OperatingLeaseCost	1213000000	USD
CY2017	us-gaap	Operating Lease Cost OperatingLeaseCost	1433000000	USD
CY2019	ual	Variable And Short Term Lease Cost VariableAndShortTermLeaseCost	2548000000	USD
CY2018	ual	Variable And Short Term Lease Cost VariableAndShortTermLeaseCost	2569000000	USD
CY2017	ual	Variable And Short Term Lease Cost VariableAndShortTermLeaseCost	2209000000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	68000000	USD
CY2018	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	75000000	USD
CY2017	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	77000000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	85000000	USD
CY2017	us-gaap	Sublease Income SubleaseIncome	36000000	USD
CY2019	us-gaap	Lease Cost LeaseCost	3707000000	USD
CY2018	us-gaap	Lease Cost LeaseCost	3863000000	USD
CY2017	us-gaap	Lease Cost LeaseCost	3707000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	920000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	62000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	754000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	75000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	591000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	49000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	633000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	38000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	626000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	35000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	4214000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	57000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	7738000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	316000000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2106000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	50000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	5632000000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	266000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	686000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	46000000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	4946000000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	220000000	USD
CY2019Q4	ual	Lessee Operating And Finance Lease Not Yet Commenced Amount LesseeOperatingAndFinanceLeaseNotYetCommencedAmount	500000000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y
CY2018Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P6Y
CY2018Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.052
CY2018Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.052
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.057
CY2018Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.458
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	902000000	USD
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	1078000000	USD
CY2017	us-gaap	Operating Lease Payments OperatingLeasePayments	1451000000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	70000000	USD
CY2018	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	53000000	USD
CY2017	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	24000000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	151000000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	79000000	USD
CY2017	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	84000000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	2900000000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	2900000000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Third Year ContractualObligationDueInThirdYear	2400000000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Fourth Year ContractualObligationDueInFourthYear	1500000000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Fifth Year ContractualObligationDueInFifthYear	1300000000	USD
CY2019Q4	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	4700000000	USD
CY2019Q4	us-gaap	Contractual Obligation ContractualObligation	15700000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On First Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary	6900000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Second Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary	4300000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Third Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary	2000000000.0	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fourth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary	1000000000.0	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance On Fifth Anniversary UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary	1200000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Due After Five Years UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears	11300000000	USD
CY2019Q4	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	26700000000	USD
CY2019	ual	Number Of Call Options To Purchase Regional Jet Aircraft NumberOfCallOptionsToPurchaseRegionalJetAircraft	325	Option
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	171000000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	377000000	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	25000000	USD
CY2019	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	16000000	USD
CY2018	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	41000000	USD
CY2017	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	116000000	USD
CY2019	us-gaap	Loss On Contract Termination LossOnContractTermination	0	USD
CY2018	us-gaap	Loss On Contract Termination LossOnContractTermination	64000000	USD
CY2017	us-gaap	Loss On Contract Termination LossOnContractTermination	0	USD
CY2019	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-59000000	USD
CY2018	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-5000000	USD
CY2017	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-35000000	USD
CY2019	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	246000000	USD
CY2018	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	487000000	USD
CY2017	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	176000000	USD
CY2019	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	153000000	USD
CY2018	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	-5000000	USD
CY2017	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	0	USD
CY2019	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	93000000	USD
CY2018	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	492000000	USD
CY2017	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	176000000	USD
CY2019	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-21000000	USD
CY2018	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-110000000	USD
CY2017	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-63000000	USD
CY2019	ual	Income Tax Adjustments IncomeTaxAdjustments	0	USD
CY2018	ual	Income Tax Adjustments IncomeTaxAdjustments	-5000000	USD
CY2017	ual	Income Tax Adjustments IncomeTaxAdjustments	-189000000	USD
CY2019	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	72000000	USD
CY2018	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	377000000	USD
CY2017	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	-76000000	USD
CY2019	ual	Special Charges Adjustment Write Off Unexercise And Impairments Of Aircraft SpecialChargesAdjustmentWriteOffUnexerciseAndImpairmentsOfAircraft	18000000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	20000000	USD
CY2019	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	-25000000	USD
CY2019	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-18000000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-14000000	USD
CY2019	us-gaap	Other Restructuring Costs OtherRestructuringCosts	2000000	USD
CY2019	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	13000000	USD
CY2018	ual	Special Charges Fair Value Adjustment Write Offs And Impairments Of Aircraft SpecialChargesFairValueAdjustmentWriteOffsAndImpairmentsOfAircraft	66000000	USD
CY2018	us-gaap	Loss On Contract Termination LossOnContractTermination	64000000	USD
CY2018	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	28000000	USD
CY2018	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	33000000	USD
CY2017	us-gaap	Loss From Catastrophes LossFromCatastrophes	12000000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-11000000	USD
CY2017	us-gaap	Other Restructuring Costs OtherRestructuringCosts	12000000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9589000000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11402000000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11380000000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10888000000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	495000000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1472000000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1473000000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	861000000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	292000000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	1052000000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	1024000000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	641000000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.03
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.01
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.54
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.09
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.02
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.99
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.53
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9032000000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10777000000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11003000000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10491000000	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	262000000	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1145000000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1187000000	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	635000000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	145000000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	683000000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	833000000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	461000000	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.51
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.48
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.06
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.70
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.48
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.05
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.69
CY2019Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	8000000	USD
CY2019Q2	us-gaap	Asset Impairment Charges AssetImpairmentCharges	61000000	USD
CY2019Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	102000000	USD
CY2019Q1	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	6000000	USD
CY2019Q2	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	6000000	USD
CY2019Q3	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	2000000	USD
CY2019Q4	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	2000000	USD
CY2019Q1	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-4000000	USD
CY2019Q2	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-4000000	USD
CY2019Q3	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-25000000	USD
CY2019Q4	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-26000000	USD
CY2019Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	18000000	USD
CY2019Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	71000000	USD
CY2019Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	27000000	USD
CY2019Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	130000000	USD
CY2019Q1	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	17000000	USD
CY2019Q2	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	34000000	USD
CY2019Q3	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	21000000	USD
CY2019Q4	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	81000000	USD
CY2019Q1	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	1000000	USD
CY2019Q2	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	37000000	USD
CY2019Q3	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	6000000	USD
CY2019Q4	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	49000000	USD
CY2019Q1	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	0	USD
CY2019Q2	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-8000000	USD
CY2019Q3	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-2000000	USD
CY2019Q4	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-11000000	USD
CY2019Q1	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	1000000	USD
CY2019Q2	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	29000000	USD
CY2019Q3	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	4000000	USD
CY2019Q4	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	38000000	USD
CY2018Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	23000000	USD
CY2018Q2	us-gaap	Asset Impairment Charges AssetImpairmentCharges	111000000	USD
CY2018Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	11000000	USD
CY2018Q4	us-gaap	Asset Impairment Charges AssetImpairmentCharges	232000000	USD
CY2018Q1	us-gaap	Loss On Contract Termination LossOnContractTermination	0	USD
CY2018Q2	us-gaap	Loss On Contract Termination LossOnContractTermination	0	USD
CY2018Q3	us-gaap	Loss On Contract Termination LossOnContractTermination	0	USD
CY2018Q4	us-gaap	Loss On Contract Termination LossOnContractTermination	64000000	USD
CY2018Q1	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	14000000	USD
CY2018Q2	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	11000000	USD
CY2018Q3	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	9000000	USD
CY2018Q4	us-gaap	Postemployment Benefits Period Expense PostemploymentBenefitsPeriodExpense	7000000	USD
CY2018Q1	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-3000000	USD
CY2018Q2	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	-7000000	USD
CY2018Q3	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	3000000	USD
CY2018Q4	ual	Gain Loss On Sale Of Other Assets And Other Miscellaneous Charges GainLossOnSaleOfOtherAssetsAndOtherMiscellaneousCharges	2000000	USD
CY2018Q1	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	40000000	USD
CY2018Q2	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	129000000	USD
CY2018Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	17000000	USD
CY2018Q4	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	301000000	USD
CY2018Q1	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	45000000	USD
CY2018Q4	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	245000000	USD
CY2018Q1	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	1000000	USD
CY2018Q2	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-59000000	USD
CY2018Q3	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	3000000	USD
CY2018Q4	ual	Income Tax Expense Benefit Special Charges IncomeTaxExpenseBenefitSpecialCharges	-55000000	USD
CY2018Q1	ual	Income Tax Adjustments IncomeTaxAdjustments	0	USD
CY2018Q2	ual	Income Tax Adjustments IncomeTaxAdjustments	0	USD
CY2018Q2	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	-135000000	USD
CY2018Q3	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	29000000	USD
CY2018Q4	ual	Gain Loss On Financial Instruments Non Operating GainLossOnFinancialInstrumentsNonOperating	56000000	USD
CY2018Q1	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	-5000000	USD
CY2018Q2	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	264000000	USD
CY2018Q3	ual	Special Charges And Losses On Financial Instruments Non Operating Before Tax SpecialChargesAndLossesOnFinancialInstrumentsNonOperatingBeforeTax	-12000000	USD
CY2018Q3	ual	Income Tax Adjustments IncomeTaxAdjustments	0	USD
CY2018Q4	ual	Income Tax Adjustments IncomeTaxAdjustments	-5000000	USD
CY2018Q1	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	-4000000	USD
CY2018Q2	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	205000000	USD
CY2018Q3	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	-9000000	USD
CY2018Q4	ual	Special Items Net Of Income Tax Benefits SpecialItemsNetOfIncomeTaxBenefits	185000000	USD

Files In Submission

Name	View Source	Status
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$UAL
United Airlines Holdings, Inc. Stock $ual

2019 Q4 Form 10-K Financial Statement

#000010051720000010 Filed on February 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UAL United Airlines Holdings, Inc. Stock $ual

2019 Q4 Form 10-K Financial Statement

#000010051720000010 Filed on February 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UAL
United Airlines Holdings, Inc. Stock $ual