{
    "0000006201": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationAndAmortization"
        ],
        "Expenses": [
            "CostsAndExpenses",
            "IncomeTaxExpenseBenefit"
        ],
        "Liabilities": [
            "LiabilitiesCurrent",
            "LiabilitiesNoncurrent",
            "CommitmentsAndContingencies"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [
            "LiabilitiesNoncurrent"
        ],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "FuelCosts",
            "LaborAndRelatedExpense",
            "AirlineCapacityPurchaseArrangements",
            "AircraftMaintenanceMaterialsAndRepairs",
            "LandingFeesAndOtherRentals",
            "AircraftRental",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "SalesRevenueNet"
        ],
        "remainder_Assets": [],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "SellingAndMarketingExpense",
            "RestructuringAndOtherMainline",
            "IncomeTaxExpenseBenefit"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "PassengerRevenueMainline",
            "PassengerRevenueRegional",
            "CargoAndFreightRevenue",
            "OtherSalesRevenueNet"
        ]
    },
    "0000027904": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationDepletionAndAmortization"
        ],
        "Expenses": [
            "IncomeTaxExpenseBenefit",
            "OperatingExpenses"
        ],
        "Liabilities": [
            "LiabilitiesCurrent",
            "LiabilitiesNoncurrent",
            "CommitmentsAndContingencies"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [
            "LiabilitiesNoncurrent"
        ],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "FuelCosts",
            "LaborAndRelatedExpense",
            "AirlineCapacityPurchaseArrangements",
            "AircraftMaintenanceMaterialsAndRepairs",
            "ProfessionalAndContractServicesExpense",
            "LandingFeesAndOtherRentals",
            "AircraftRental",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "Revenues"
        ],
        "remainder_Assets": [
            "Goodwill",
            "IntangibleAssetsNetExcludingGoodwill",
            "DeferredIncomeTaxAssetsNet"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "IncomeTaxExpenseBenefit",
            "SellingAndMarketingExpense",
            "OtherLaborRelatedExpenses",
            "CostOfServicesCatering"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "PassengerRevenue",
            "CargoAndFreightRevenue",
            "OtherSalesRevenueNet"
        ]
    },
    "0000092380": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationAndAmortization"
        ],
        "Expenses": [
            "IncomeTaxExpenseBenefit",
            "OperatingExpenses"
        ],
        "Liabilities": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "LaborAndRelatedExpense",
            "FuelCosts",
            "AircraftMaintenanceMaterialsAndRepairs",
            "AircraftRental",
            "LandingFeesAndOtherRentals",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "Revenues"
        ],
        "remainder_Assets": [
            "Goodwill"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "IncomeTaxExpenseBenefit",
            "BusinessCombinationIntegrationRelatedCosts"
        ],
        "remainder_Liabilities": [],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "LongTermDebtAndCapitalLeaseObligations",
            "DeferredTaxLiabilitiesNoncurrent",
            "OtherLiabilitiesNoncurrent",
            "StockholdersEquity",
            "ConstructionObligationNoncurrent"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "PassengerRevenue",
            "CargoAndFreightRevenue",
            "NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification",
            "OtherSalesRevenueNet"
        ]
    },
    "0000100517": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationAndAmortization"
        ],
        "Expenses": [
            "CostsAndExpenses",
            "IncomeTaxExpenseBenefit"
        ],
        "Liabilities": [
            "LiabilitiesCurrent",
            "CommitmentsAndContingencies"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "LaborAndRelatedExpense",
            "FuelCosts",
            "LandingFeesAndOtherRentals",
            "AirlineCapacityPurchaseArrangements",
            "AircraftMaintenanceMaterialsAndRepairs",
            "AircraftRental",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "Revenues"
        ],
        "remainder_Assets": [],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "SellingExpense",
            "RestructuringSettlementAndImpairmentProvisions",
            "IncomeTaxExpenseBenefit"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "LongTermDebtNoncurrent",
            "CapitalLeaseObligationsNoncurrent",
            "OtherLiabilitiesNoncurrent",
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "PassengerRevenue",
            "CargoAndFreightRevenue",
            "OtherSalesRevenueNet"
        ]
    },
    "0000350403": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [],
        "Expenses": [
            "IncomeTaxExpenseBenefit",
            "OperatingExpenses",
            "AssetImpairmentCharges"
        ],
        "Liabilities": [
            "LiabilitiesCurrent",
            "CommitmentsAndContingencies"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [],
        "remainder_Assets": [
            "RestrictedCashAndInvestmentsNoncurrent",
            "DeferredTaxAssetsNetNoncurrent",
            "Goodwill",
            "IntangibleAssetsNetExcludingGoodwill"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "IncomeTaxExpenseBenefit",
            "OperatingCostsAndExpenses",
            "SellingGeneralAndAdministrativeExpense",
            "AssetImpairmentCharges"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "LongTermLineOfCredit",
            "SeniorLongTermNotes",
            "DeferredTaxLiabilitiesNoncurrent",
            "OtherLiabilitiesNoncurrent",
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense",
            "SalesRevenueServicesNet",
            "GainLossOnDispositionOfAssets",
            "IncomeLossFromEquityMethodInvestments"
        ],
        "remainder_Revenues": []
    },
    "0001048911": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationDepletionAndAmortization"
        ],
        "Expenses": [
            "CostsAndExpenses",
            "IncomeTaxExpenseBenefit"
        ],
        "Liabilities": [
            "LiabilitiesCurrent",
            "CommitmentsAndContingencies"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "LaborAndRelatedExpense",
            "RentalsAndLandingFees",
            "FuelCosts",
            "CostOfPropertyRepairsAndMaintenance",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "Revenues"
        ],
        "remainder_Assets": [
            "Goodwill"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "ShippingHandlingAndTransportationCosts",
            "AssetImpairmentCharges",
            "RetirementPlansMarketToMarketAdjustment",
            "AircraftImpairmentAndOtherCharges",
            "IntercompanyChargesNetOperating",
            "IncomeTaxExpenseBenefit"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "LongTermDebtAndCapitalLeaseObligations",
            "LiabilitiesOtherThanLongtermDebtNoncurrent",
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "Revenues"
        ]
    },
    "0001128281": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [],
        "DepreciationDepletionAndAmortization": [],
        "Expenses": [
            "CostOfGoodsAndServicesSold",
            "IncomeTaxExpenseBenefit",
            "SellingGeneralAndAdministrativeExpense"
        ],
        "Liabilities": [
            "Liabilities"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "SalesRevenueNet"
        ],
        "remainder_Assets": [
            "OtherAssets"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "CostOfGoodsAndServicesSold",
            "DeferredIncomeTaxExpenseBenefit",
            "CurrentIncomeTaxExpenseBenefit",
            "SellingGeneralAndAdministrativeExpense"
        ],
        "remainder_Liabilities": [
            "LongTermNotesPayable"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "SalesRevenueNet"
        ]
    },
    "0001135185": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [],
        "DepreciationDepletionAndAmortization": [],
        "Expenses": [
            "IncomeTaxExpenseBenefit",
            "OperatingCostsAndExpenses"
        ],
        "Liabilities": [
            "LiabilitiesCurrent",
            "LiabilitiesNoncurrent",
            "CommitmentsAndContingencies"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [
            "LiabilitiesNoncurrent"
        ],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "LaborAndRelatedExpense",
            "LandingFeesAndOtherRentals",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "Revenues"
        ],
        "remainder_Assets": [
            "HeldToMaturitySecuritiesNoncurrent",
            "DepositsAssetsNoncurrent",
            "IntangibleAssetsNetExcludingGoodwill"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "IncomeTaxExpenseBenefit",
            "FuelCostsGrossOfHedging",
            "CostOfServicesMaintenanceCosts",
            "CostOfServicesDepreciationAndAmortization",
            "TravelAndEntertainmentExpense",
            "AircraftRentalAndLandingFees",
            "PassengerAndGroundHandlingServices",
            "-GainLossOnDispositionOfAssets",
            "AssetImpairmentCharges",
            "BusinessCombinationAcquisitionRelatedCosts"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense",
            "IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"
        ],
        "remainder_Revenues": [
            "Revenues"
        ]
    },
    "0001158463": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationAndAmortization"
        ],
        "Expenses": [
            "CostsAndExpenses",
            "IncomeTaxExpenseBenefit"
        ],
        "Liabilities": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "AircraftMaintenanceMaterialsAndRepairs",
            "AircraftRental",
            "LandingFeesAndOtherRentals",
            "FuelCosts",
            "LaborAndRelatedExpense",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [],
        "remainder_Assets": [
            "MarketableSecuritiesNoncurrent",
            "RestrictedCashAndCashEquivalentsNoncurrent"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "SellingAndMarketingExpense",
            "IncomeTaxExpenseBenefit"
        ],
        "remainder_Liabilities": [],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "LongTermDebtAndCapitalLeaseObligations",
            "ConstructionObligation",
            "DeferredTaxesAndOther",
            "StockholdersEquity"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense",
            "SalesRevenueServicesNet"
        ],
        "remainder_Revenues": []
    },
    "0001172222": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [],
        "DepreciationDepletionAndAmortization": [
            "DepreciationDepletionAndAmortization"
        ],
        "Expenses": [
            "CostsAndExpenses",
            "IncomeTaxExpenseBenefit"
        ],
        "Liabilities": [
            "CommitmentsAndContingencies",
            "LiabilitiesCurrent"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLossAvailableToCommonStockholdersBasic"
        ],
        "OperatingExpenses": [
            "FuelCosts",
            "LaborAndRelatedExpense",
            "AircraftRental",
            "AircraftMaintenanceMaterialsAndRepairs",
            "LandingFeesAndOtherRentals",
            "ProfessionalAndContractServicesExpense",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "SalesRevenueNet"
        ],
        "remainder_Assets": [
            "PrepaidExpenseAndOtherAssetsNoncurrent",
            "IntangibleAssetsNetExcludingGoodwill",
            "Goodwill"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "OtherCostOfServices",
            "SellingExpense",
            "SpecialItemsOperatingExpenses",
            "IncomeTaxExpenseBenefit"
        ],
        "remainder_Liabilities": [
            "CommitmentsAndContingencies"
        ],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "StockholdersEquity",
            "LongTermDebtAndCapitalLeaseObligations",
            "LiabilitiesOtherThanLongtermDebtNoncurrent"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "PassengerRevenue",
            "OtherSalesRevenueNet"
        ]
    },
    "0001498710": {
        "Assets": [
            "Assets"
        ],
        "AssetsCurrent": [
            "AssetsCurrent"
        ],
        "AssetsNoncurrent": [
            "OtherAssetsNoncurrent"
        ],
        "DepreciationDepletionAndAmortization": [
            "DepreciationDepletionAndAmortization"
        ],
        "Expenses": [
            "IncomeTaxExpenseBenefit",
            "OperatingExpenses"
        ],
        "Liabilities": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesAndStockholdersEquity": [
            "LiabilitiesAndStockholdersEquity"
        ],
        "LiabilitiesCurrent": [
            "LiabilitiesCurrent"
        ],
        "LiabilitiesNonCurrent": [],
        "NetIncome": [
            "NetIncomeLoss"
        ],
        "OperatingExpenses": [
            "FuelCosts",
            "LaborAndRelatedExpense",
            "AircraftRental",
            "LandingFeesAndOtherRentals",
            "AircraftMaintenanceMaterialsAndRepairs",
            "OtherCostAndExpenseOperating"
        ],
        "PropertyPlantAndEquipmentNet": [
            "PropertyPlantAndEquipmentNet"
        ],
        "Revenues": [
            "SalesRevenueNet"
        ],
        "remainder_Assets": [
            "DepositsOnFlightEquipment",
            "AircraftMaintenanceDepositsNoncurrent",
            "DeferredMaintenanceCostsNoncurrent"
        ],
        "remainder_ComprehensiveNetIncome": [],
        "remainder_Expenses": [
            "IncomeTaxExpenseBenefit",
            "SellingAndMarketingExpense",
            "-GainLossOnDispositionOfAssets",
            "SpecialChargesCredits"
        ],
        "remainder_Liabilities": [],
        "remainder_LiabilitiesAndStockholdersEquity": [
            "DeferredCreditsAndOtherLiabilitiesNoncurrent",
            "StockholdersEquity",
            "LongTermDebtNoncurrent",
            "DeferredIncomeTaxLiabilitiesNet"
        ],
        "remainder_NetIncome": [
            "NonoperatingIncomeExpense"
        ],
        "remainder_Revenues": [
            "PassengerRevenue",
            "OtherSalesRevenueNet"
        ]
    }
}