Entity Common Stock, Shares Outstanding
|
DEI
|
Entity Number of Employees
|
DEI
|
Entity Public Float
|
DEI
|
Derivative, Nonmonetary Notional Amount
|
INVEST
|
Accounts Payable, Current
|
US-GAAP
|
Accounts Payable, Related Parties, Current
|
US-GAAP
|
Accrued Liabilities, Current
|
US-GAAP
|
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
|
US-GAAP
|
Accumulated Other Comprehensive Income (Loss), Net of Tax
|
US-GAAP
|
Additional Paid in Capital, Common Stock
|
US-GAAP
|
Amortization
|
US-GAAP
|
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation
|
US-GAAP
|
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt
|
US-GAAP
|
Adjustments to Additional Paid in Capital, Income Tax Deficiency from Share-based Compensation
|
US-GAAP
|
APIC, Share-based Payment Arrangement, Increase for Cost Recognition
|
US-GAAP
|
Adjustments to Additional Paid in Capital, Warrant Issued
|
US-GAAP
|
Advertising Expense
|
US-GAAP
|
Aircraft Maintenance, Materials, and Repairs
|
US-GAAP
|
Aircraft Rental
|
US-GAAP
|
Airline, Capacity Purchase Arrangements
|
US-GAAP
|
Airline Related Inventory, Gross
|
US-GAAP
|
Airline Related Inventory, Net
|
US-GAAP
|
Air Traffic Liability, Current
|
US-GAAP
|
Share-based Payment Arrangement, Expense
|
US-GAAP
|
Accounts Receivable, Allowance for Credit Loss, Current
|
US-GAAP
|
Amortization of Debt Issuance Costs and Discounts
|
US-GAAP
|
Amortization of Intangible Assets
|
US-GAAP
|
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
|
US-GAAP
|
AOCI Tax, Attributable to Parent
|
US-GAAP
|
Asset Impairment Charges
|
US-GAAP
|
Assets
|
US-GAAP
|
Assets, Current
|
US-GAAP
|
Assets, Fair Value Disclosure, Recurring (Deprecated 2018-01-31)
|
US-GAAP
|
Debt Securities, Available-for-sale, Current
|
US-GAAP
|
Available-for-sale Securities, Fair Value Disclosure (Deprecated 2013-01-31)
|
US-GAAP
|
Bankruptcy Claims, Amount of Claims Expunged by Bankruptcy Court
|
US-GAAP
|
Bankruptcy Claims, Amount of Claims Filed
|
US-GAAP
|
Bankruptcy Claims, Amount of Claims under Review by Management
|
US-GAAP
|
Bankruptcy Claims, Amount Paid to Settle Claims
|
US-GAAP
|
Bankruptcy Claims, Number Claims Filed
|
US-GAAP
|
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned
|
US-GAAP
|
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares
|
US-GAAP
|
Business Acquisition, Share Price
|
US-GAAP
|
Business Acquisition, Pro Forma Net Income (Loss)
|
US-GAAP
|
Business Acquisition, Pro Forma Revenue
|
US-GAAP
|
Business Combination, Acquisition Related Costs
|
US-GAAP
|
Business Combination, Consideration Transferred
|
US-GAAP
|
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable
|
US-GAAP
|
Business Combination, Contingent Consideration, Liability
|
US-GAAP
|
Business Combination, Integration Related Costs
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment
|
US-GAAP
|
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net
|
US-GAAP
|
Business Exit Costs
|
US-GAAP
|
Capital Leased Assets, Gross
|
US-GAAP
|
Capital Lease Obligations, Current
|
US-GAAP
|
Lease Obligation Incurred
|
US-GAAP
|
Capital Lease Obligations, Noncurrent
|
US-GAAP
|
Capital Leases, Balance Sheet, Assets by Major Class, Net
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due, Next Twelve Months
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due in Five Years
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due in Four Years
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due in Three Years
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due in Two Years
|
US-GAAP
|
Capital Leases, Future Minimum Payments Due Thereafter
|
US-GAAP
|
Capital Leases, Future Minimum Payments, Interest Included in Payments
|
US-GAAP
|
Capital Leases, Future Minimum Payments, Net Minimum Payments
|
US-GAAP
|
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments
|
US-GAAP
|
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation
|
US-GAAP
|
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Flight Equipment, Accumulated Depreciation
|
US-GAAP
|
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Flight Equipment, Gross
|
US-GAAP
|
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Flight Equipment, Net
|
US-GAAP
|
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Gross
|
US-GAAP
|
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net
|
US-GAAP
|
Cargo and Freight Revenue (Deprecated 2018-01-31)
|
US-GAAP
|
Cash
|
US-GAAP
|
Cash Acquired from Acquisition
|
US-GAAP
|
Cash and Cash Equivalents, at Carrying Value
|
US-GAAP
|
Cash and Cash Equivalents, Period Increase (Decrease)
|
US-GAAP
|
Cash, Cash Equivalents, and Short-term Investments
|
US-GAAP
|
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
|
US-GAAP
|
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
|
US-GAAP
|
Cash Flow Hedge Derivative Instrument Assets at Fair Value
|
US-GAAP
|
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value
|
US-GAAP
|
Cash Flow Hedges Derivative Instruments at Fair Value, Net
|
US-GAAP
|
Cash, Period Increase (Decrease)
|
US-GAAP
|
Class of Warrant or Right, Exercise Price of Warrants or Rights
|
US-GAAP
|
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
|
US-GAAP
|
Collateral Already Posted, Aggregate Fair Value
|
US-GAAP
|
Commitments and Contingencies
|
US-GAAP
|
Common Stock, Capital Shares Reserved for Future Issuance
|
US-GAAP
|
Common Stock, Dividends, Per Share, Cash Paid
|
US-GAAP
|
Common Stock, Dividends, Per Share, Declared
|
US-GAAP
|
Common Stock, Par or Stated Value Per Share
|
US-GAAP
|
Common Stock, Shares Authorized
|
US-GAAP
|
Common Stock, Shares, Issued
|
US-GAAP
|
Common Stock, Shares, Outstanding
|
US-GAAP
|
Common Stock, Value, Issued
|
US-GAAP
|
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
|
US-GAAP
|
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations
|
US-GAAP
|
Contract with Customer, Liability
|
US-GAAP
|
Contract with Customer, Liability, Noncurrent
|
US-GAAP
|
Conversion of Stock, Shares Converted
|
US-GAAP
|
Convertible Preferred Dividends, Net of Tax
|
US-GAAP
|
Convertible Preferred Stock, Shares Reserved for Future Issuance
|
US-GAAP
|
Cost of Services, Catering
|
US-GAAP
|
Costs and Expenses
|
US-GAAP
|
Current Federal Tax Expense (Benefit)
|
US-GAAP
|
Current Foreign Tax Expense (Benefit)
|
US-GAAP
|
Current Income Tax Expense (Benefit)
|
US-GAAP
|
Current State and Local Tax Expense (Benefit)
|
US-GAAP
|
Debt and Lease Obligation
|
US-GAAP
|
Debt Conversion, Converted Instrument, Amount
|
US-GAAP
|
Debt Instrument, Basis Spread on Variable Rate
|
US-GAAP
|
Long-term Debt, Gross
|
US-GAAP
|
Debt Instrument, Interest Rate, Effective Percentage
|
US-GAAP
|
Debt Instrument, Interest Rate, Stated Percentage
|
US-GAAP
|
Debt Instrument, Unamortized Discount
|
US-GAAP
|
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
|
US-GAAP
|
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction
|
US-GAAP
|
Debtor Reorganization Items, Debtor-in-Possession Facility Financing Costs
|
US-GAAP
|
Debtor Reorganization Items, Impairment Loss
|
US-GAAP
|
Debtor Reorganization Items, Legal and Advisory Professional Fees
|
US-GAAP
|
Debtor Reorganization Items, Other Expense (Income)
|
US-GAAP
|
Debtor Reorganization Items, Pension and Other Postretirement Related Charges
|
US-GAAP
|
Debt, Weighted Average Interest Rate
|
US-GAAP
|
Deferred Air Traffic Revenue, Current
|
US-GAAP
|
Deferred Compensation Liability, Current and Noncurrent
|
US-GAAP
|
Deferred Credits and Other Liabilities
|
US-GAAP
|
Deferred Credits and Other Liabilities, Noncurrent
|
US-GAAP
|
Deferred Federal Income Tax Expense (Benefit)
|
US-GAAP
|
Deferred Income Tax Assets, Net
|
US-GAAP
|
Deferred Income Tax Expense (Benefit)
|
US-GAAP
|
Deferred Income Taxes and Tax Credits
|
US-GAAP
|
Deferred Tax Liabilities, Gross
|
US-GAAP
|
Deferred Rent Credit
|
US-GAAP
|
Deferred Revenue and Credits, Noncurrent
|
US-GAAP
|
Deferred Revenue, Noncurrent
|
US-GAAP
|
Deferred State and Local Income Tax Expense (Benefit)
|
US-GAAP
|
Deferred Tax Assets, Deferred Gain on Sale Leaseback Transaction
|
US-GAAP
|
Deferred Tax Assets, Frequent Flier Liability
|
US-GAAP
|
Deferred Tax Assets, Gross
|
US-GAAP
|
Deferred Tax Assets, Net
|
US-GAAP
|
Deferred Tax Assets, Net, Noncurrent
|
US-GAAP
|
Deferred Tax Assets, Net of Valuation Allowance
|
US-GAAP
|
Deferred Tax Assets, Operating Loss Carryforwards
|
US-GAAP
|
Deferred Tax Assets, Other
|
US-GAAP
|
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax
|
US-GAAP
|
Deferred Tax Assets, Tax Credit Carryforwards, Other
|
US-GAAP
|
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions
|
US-GAAP
|
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits
|
US-GAAP
|
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Deferred Rent
|
US-GAAP
|
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other
|
US-GAAP
|
Deferred Tax Assets, Valuation Allowance
|
US-GAAP
|
Deferred Tax Liabilities, Net
|
US-GAAP
|
Deferred Tax Liabilities, Goodwill and Intangible Assets
|
US-GAAP
|
Deferred Tax Liabilities, Leasing Arrangements
|
US-GAAP
|
Deferred Tax Liabilities, Other
|
US-GAAP
|
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax
|
US-GAAP
|
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit) (Deprecated 2013-01-31)
|
US-GAAP
|
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan
|
US-GAAP
|
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets
|
US-GAAP
|
Defined Benefit Plan, Plan Assets, Contributions by Employer
|
US-GAAP
|
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation (Deprecated 2012-01-31)
|
US-GAAP
|
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation
|
US-GAAP
|
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components (Deprecated 2012-01-31)
|
US-GAAP
|
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components
|
US-GAAP
|
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation
|
US-GAAP
|
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components
|
US-GAAP
|
Defined Benefit Plan, Effect of Settlements and Curtailments on Accumulated Benefit Obligation (Deprecated 2017-01-31)
|
US-GAAP
|
Defined Benefit Plan, Equity Securities (Deprecated 2012-01-31)
|
US-GAAP
|
Defined Benefit Plan, Expected Future Benefit Payments in Year One (Deprecated 2012-01-31)
|
US-GAAP
|
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year
|
US-GAAP
|
Defined Benefit Plan, Plan Assets, Amount
|
US-GAAP
|
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets (Deprecated 2017-01-31)
|
US-GAAP
|
Defined Benefit Plan, Funded (Unfunded) Status of Plan
|
US-GAAP
|
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year (Deprecated 2017-01-31)
|
US-GAAP
|
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment
|
US-GAAP
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment
|
US-GAAP
|
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments (Deprecated 2012-01-31)
|
US-GAAP
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment
|
US-GAAP
|
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year (Deprecated 2017-01-31)
|
US-GAAP
|
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year (Deprecated 2017-01-31)
|
US-GAAP
|
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate (Deprecated 2017-01-31)
|
US-GAAP
|
Defined Contribution Plan, Cost
|
US-GAAP
|
Deposits on Flight Equipment
|
US-GAAP
|
Depreciation
|
US-GAAP
|
Depreciation, Depletion and Amortization, Nonproduction
|
US-GAAP
|
Depreciation, Depletion and Amortization
|
US-GAAP
|
Derivative Asset, Collateral, Obligation to Return Cash, Offset
|
US-GAAP
|
Derivative, Cash Received on Hedge
|
US-GAAP
|
Derivative Asset, Fair Value, Gross Asset
|
US-GAAP
|
Derivative Asset, Fair Value, Amount Not Offset Against Collateral
|
US-GAAP
|
Derivative Liability, Fair Value, Amount Not Offset Against Collateral
|
US-GAAP
|
Derivative, Gain (Loss) on Derivative, Net
|
US-GAAP
|
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred
|
US-GAAP
|
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net
|
US-GAAP
|
Derivative Instruments, Gain (Loss) Recognized in Income, Net (Deprecated 2013-01-31)
|
US-GAAP
|
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net (Deprecated 2018-01-31)
|
US-GAAP
|
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion
|
US-GAAP
|
Derivative Instruments, Loss Recognized in Other Comprehensive Income (Loss), Effective Portion (Deprecated 2018-01-31)
|
US-GAAP
|
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities
|
US-GAAP
|
Dividends, Common Stock
|
US-GAAP
|
Due from Related Parties, Current
|
US-GAAP
|
Earnings Per Share, Basic
|
US-GAAP
|
Earnings Per Share, Basic and Diluted
|
US-GAAP
|
Earnings Per Share, Diluted
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Percent
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Tax Credit, Percent
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount
|
US-GAAP
|
Employee-related Liabilities, Current
|
US-GAAP
|
Share-based Payment Arrangement, Cash Used to Settle Award
|
US-GAAP
|
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options (Deprecated 2017-01-31)
|
US-GAAP
|
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
|
US-GAAP
|
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options (Deprecated 2017-01-31)
|
US-GAAP
|
Equity Method Investment, Net Sales Proceeds (Deprecated 2016-01-31)
|
US-GAAP
|
Equity Securities, FV-NI, Unrealized Gain (Loss)
|
US-GAAP
|
Equity Securities, FV-NI, Unrealized Loss
|
US-GAAP
|
Extinguishment of Debt, Amount
|
US-GAAP
|
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount
|
US-GAAP
|
Fair Value, Equity, Level 1 to Level 2 Transfers, Amount
|
US-GAAP
|
Fair Value, Level 1 to level 2 Transfers, Amount (Deprecated 2012-01-31)
|
US-GAAP
|
Finance Lease, Interest Expense
|
US-GAAP
|
Finance Lease, Interest Payment on Liability
|
US-GAAP
|
Finance Lease, Liability
|
US-GAAP
|
Finance Lease, Liability, Current
|
US-GAAP
|
Finance Lease, Liability, Noncurrent
|
US-GAAP
|
Finance Lease, Liability, Payment, Due
|
US-GAAP
|
Finance Lease, Liability, to be Paid, after Year Five
|
US-GAAP
|
Finance Lease, Liability, to be Paid, Year One
|
US-GAAP
|
Finance Lease, Liability, to be Paid, Year Five
|
US-GAAP
|
Finance Lease, Liability, to be Paid, Year Four
|
US-GAAP
|
Finance Lease, Liability, to be Paid, Year Three
|
US-GAAP
|
Finance Lease, Liability, to be Paid, Year Two
|
US-GAAP
|
Finance Lease, Liability, Undiscounted Excess Amount
|
US-GAAP
|
Finance Lease, Principal Payments
|
US-GAAP
|
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
|
US-GAAP
|
Finance Lease, Right-of-Use Asset, Accumulated Amortization
|
US-GAAP
|
Finance Lease, Right-of-Use Asset, Amortization
|
US-GAAP
|
Finance Lease, Right-of-Use Asset, before Accumulated Amortization
|
US-GAAP
|
Finance Lease, Weighted Average Discount Rate, Percent
|
US-GAAP
|
Finite-Lived Customer Relationships, Gross
|
US-GAAP
|
Finite-Lived Intangible Assets, Accumulated Amortization
|
US-GAAP
|
Finite-Lived Intangible Assets, Amortization Expense (Deprecated 2012-01-31)
|
US-GAAP
|
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
|
US-GAAP
|
Finite-Lived Intangible Asset, Expected Amortization, Year One
|
US-GAAP
|
Finite-Lived Intangible Asset, Expected Amortization, Year Five
|
US-GAAP
|
Finite-Lived Intangible Asset, Expected Amortization, Year Four
|
US-GAAP
|
Finite-Lived Intangible Asset, Expected Amortization, Year Three
|
US-GAAP
|
Finite-Lived Intangible Asset, Expected Amortization, Year Two
|
US-GAAP
|
Finite-Lived Intangible Assets, Gross
|
US-GAAP
|
Finite-Lived Intangible Assets, Net
|
US-GAAP
|
Finite-Lived Intangible Assets, Useful Life (Deprecated 2012-01-31)
|
US-GAAP
|
Finite-Lived Trade Names, Gross
|
US-GAAP
|
Flight Equipment, Gross
|
US-GAAP
|
Flight Equipment Owned, Accumulated Depreciation (Deprecated 2016-01-31)
|
US-GAAP
|
Flight Equipment Owned, Gross (Deprecated 2016-01-31)
|
US-GAAP
|
Flight Equipment Owned, Net (Deprecated 2016-01-31)
|
US-GAAP
|
Foreign Currency Transaction Gain (Loss), before Tax
|
US-GAAP
|
Foreign Currency Transaction Gain (Loss), Realized
|
US-GAAP
|
Foreign Currency Transaction Loss, before Tax
|
US-GAAP
|
Frequent Flier Liability, Current
|
US-GAAP
|
Frequent Flier Liability, Noncurrent
|
US-GAAP
|
Fuel Costs
|
US-GAAP
|
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net
|
US-GAAP
|
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
|
US-GAAP
|
Gain (Loss) on Disposition of Intangible Assets
|
US-GAAP
|
Gain (Loss) on Disposition of Other Assets
|
US-GAAP
|
Gain (Loss) Related to Litigation Settlement
|
US-GAAP
|
Gain on Sale of Investments
|
US-GAAP
|
Gain (Loss) on Extinguishment of Debt
|
US-GAAP
|
Gain (Loss) on Disposition of Assets for Financial Service Operations
|
US-GAAP
|
General Fair Value Hedge Information, Dollar Offset Threshold, Maximum (Deprecated 2016-01-31)
|
US-GAAP
|
General Fair Value Hedge Information, Dollar Offset Threshold, Minimum (Deprecated 2016-01-31)
|
US-GAAP
|
General Fair Value Hedge Information, Minimum R Square, Percentage
|
US-GAAP
|
Goodwill
|
US-GAAP
|
Goodwill, Impairment Loss
|
US-GAAP
|
Guarantor Obligations, Current Carrying Value
|
US-GAAP
|
Guarantor Obligations, Maximum Exposure, Undiscounted
|
US-GAAP
|
Impairment of Intangible Assets (Excluding Goodwill)
|
US-GAAP
|
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)
|
US-GAAP
|
Impairment of Long-Lived Assets to be Disposed of
|
US-GAAP
|
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
|
US-GAAP
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
|
US-GAAP
|
Income Tax Expense (Benefit)
|
US-GAAP
|
Income Taxes Paid
|
US-GAAP
|
Income Taxes Paid, Net
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Tax Credit, Amount
|
US-GAAP
|
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount
|
US-GAAP
|
Increase (Decrease) in Accounts Payable and Accrued Liabilities
|
US-GAAP
|
Increase (Decrease) in Accounts Receivable
|
US-GAAP
|
Increase (Decrease) in Air Traffic Liability (Deprecated 2011-01-31)
|
US-GAAP
|
Increase (Decrease) in Air Traffic Liability
|
US-GAAP
|
Increase (Decrease) in Commodity Contract Assets and Liabilities
|
US-GAAP
|
Increase (Decrease) in Frequent Flyer Liability
|
US-GAAP
|
Increase (Decrease) in Inventories
|
US-GAAP
|
Increase (Decrease) in Other Current Assets
|
US-GAAP
|
Increase (Decrease) in Other Operating Assets
|
US-GAAP
|
Increase (Decrease) in Other Operating Assets and Liabilities, Net
|
US-GAAP
|
Increase (Decrease) in Obligation, Pension Benefits
|
US-GAAP
|
Increase (Decrease) in Receivables
|
US-GAAP
|
Increase (Decrease) in Restricted Cash
|
US-GAAP
|
Increase (Decrease) in Restricted Cash and Investments
|
US-GAAP
|
Increase (Decrease) of Restricted Investments
|
US-GAAP
|
Incremental Common Shares Attributable to Dilutive Effect of Accelerated Share Repurchase Agreements
|
US-GAAP
|
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities
|
US-GAAP
|
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
|
US-GAAP
|
Indefinite-Lived Domestic Slots and Routes
|
US-GAAP
|
Indefinite-lived Intangible Assets (Deprecated 2012-01-31)
|
US-GAAP
|
Indefinite-lived Intangible Assets (Excluding Goodwill)
|
US-GAAP
|
Indefinite-Lived International Slots and Routes
|
US-GAAP
|
Indefinite-Lived Slots and Routes
|
US-GAAP
|
Insurance Settlements Receivable
|
US-GAAP
|
Intangible Assets, Net (Excluding Goodwill)
|
US-GAAP
|
Interest Costs Capitalized
|
US-GAAP
|
Capitalized Interest Costs, Including Allowance for Funds Used During Construction
|
US-GAAP
|
Interest Expense
|
US-GAAP
|
Interest on Convertible Debt, Net of Tax
|
US-GAAP
|
Interest Paid, Excluding Capitalized Interest, Operating Activities
|
US-GAAP
|
Interest Portion of Minimum Lease Payments, Sale Leaseback Transactions
|
US-GAAP
|
Investment Income, Interest
|
US-GAAP
|
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures
|
US-GAAP
|
Labor and Related Expense
|
US-GAAP
|
Landing Fees and Other Rentals
|
US-GAAP
|
Operating Leases, Rent Expense
|
US-GAAP
|
Lease, Cost
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid, after Year Five
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid, Year One
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid, Year Five
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid, Year Four
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid, Year Three
|
US-GAAP
|
Lessee, Operating Lease, Liability, to be Paid, Year Two
|
US-GAAP
|
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
|
US-GAAP
|
Liabilities and Equity
|
US-GAAP
|
Liabilities, Current
|
US-GAAP
|
Liabilities, Noncurrent
|
US-GAAP
|
Liabilities Subject to Compromise
|
US-GAAP
|
Liabilities Subject to Compromise, Accounts Payable and Accrued Liabilities
|
US-GAAP
|
Liabilities Subject to Compromise, Aircraft Obligations and Deferred Gains (Deprecated 2016-01-31)
|
US-GAAP
|
Liabilities Subject to Compromise, Debt and Accrued Interest
|
US-GAAP
|
Liabilities Subject to Compromise, Employee and Deemed Claims
|
US-GAAP
|
Liabilities Subject to Compromise, Other Liabilities
|
US-GAAP
|
Liability Subject to Compromise, Pension and Other Postretirement Benefit Plan, Benefit Obligation
|
US-GAAP
|
Liabilities Subject to Compromise, Provision for Expected and Allowed Claims
|
US-GAAP
|
Line of Credit Facility, Remaining Borrowing Capacity
|
US-GAAP
|
Litigation Settlement, Amount Awarded to Other Party
|
US-GAAP
|
Litigation Settlement, Expense
|
US-GAAP
|
Long-term Debt
|
US-GAAP
|
Long-term Debt and Lease Obligation
|
US-GAAP
|
Long-term Debt and Lease Obligation, Current
|
US-GAAP
|
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal after Year Five
|
US-GAAP
|
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Five
|
US-GAAP
|
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Four
|
US-GAAP
|
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Three
|
US-GAAP
|
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Two
|
US-GAAP
|
Long-term Debt and Capital Lease Obligations, Repayments of Principal in Next Twelve Months
|
US-GAAP
|
Long-term Debt, Current Maturities
|
US-GAAP
|
Long-term Debt, Fair Value
|
US-GAAP
|
Long-Term Debt, Maturity, after Year Five
|
US-GAAP
|
Long-Term Debt, Maturity, Year One
|
US-GAAP
|
Long-Term Debt, Maturity, Year Five
|
US-GAAP
|
Long-Term Debt, Maturity, Year Four
|
US-GAAP
|
Long-Term Debt, Maturity, Year Three
|
US-GAAP
|
Long-Term Debt, Maturity, Year Two
|
US-GAAP
|
Long-Term Debt, Maturity, Remainder of Fiscal Year
|
US-GAAP
|
Long-term Debt, Excluding Current Maturities
|
US-GAAP
|
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate
|
US-GAAP
|
Long-term Purchase Commitment, Amount
|
US-GAAP
|
Long-term Debt, Percentage Bearing Variable Interest, Amount
|
US-GAAP
|
Marketing and Advertising Expense
|
US-GAAP
|
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Participants (Deprecated 2020-01-31)
|
US-GAAP
|
Net Cash Provided by (Used in) Financing Activities
|
US-GAAP
|
Net Cash Provided by (Used in) Financing Activities, Continuing Operations
|
US-GAAP
|
Net Cash Provided by (Used in) Investing Activities
|
US-GAAP
|
Net Cash Provided by (Used in) Investing Activities, Continuing Operations
|
US-GAAP
|
Net Cash Provided by (Used in) Operating Activities
|
US-GAAP
|
Net Cash Provided by (Used in) Operating Activities, Continuing Operations
|
US-GAAP
|
Net Income (Loss) Attributable to Parent
|
US-GAAP
|
Net Income (Loss) Available to Common Stockholders, Basic
|
US-GAAP
|
Net Income (Loss) Available to Common Stockholders, Diluted
|
US-GAAP
|
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification (Deprecated 2020-01-31)
|
US-GAAP
|
Noncash Merger Related Costs
|
US-GAAP
|
Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)
|
US-GAAP
|
Long-Lived Assets
|
US-GAAP
|
Nonoperating Income (Expense)
|
US-GAAP
|
Notes Payable
|
US-GAAP
|
Notional Amount of Interest Rate Derivatives (Deprecated 2013-01-31)
|
US-GAAP
|
Notional Amount of Interest Rate Fair Value Hedge Derivatives (Deprecated 2013-01-31)
|
US-GAAP
|
Number of Aircraft Operated
|
US-GAAP
|
Number of Countries in which Entity Operates
|
US-GAAP
|
Number of Operating Segments
|
US-GAAP
|
Number of Reporting Units
|
US-GAAP
|
OCI, before Reclassifications, Net of Tax, Attributable to Parent
|
US-GAAP
|
Operating Income (Loss)
|
US-GAAP
|
Operating Lease, Cost
|
US-GAAP
|
Operating Lease, Impairment Loss
|
US-GAAP
|
Operating Lease, Liability
|
US-GAAP
|
Operating Lease, Liability, Current
|
US-GAAP
|
Operating Lease, Liability, Noncurrent
|
US-GAAP
|
Operating Lease, Payments
|
US-GAAP
|
Operating Lease, Right-of-Use Asset
|
US-GAAP
|
Operating Leases, Future Minimum Payments Due
|
US-GAAP
|
Operating Leases, Future Minimum Payments Due, Next Twelve Months
|
US-GAAP
|
Operating Leases, Future Minimum Payments, Due in Five Years
|
US-GAAP
|
Operating Leases, Future Minimum Payments, Due in Four Years
|
US-GAAP
|
Operating Leases, Future Minimum Payments, Due in Three Years
|
US-GAAP
|
Operating Leases, Future Minimum Payments, Due in Two Years
|
US-GAAP
|
Operating Leases, Future Minimum Payments, Due Thereafter
|
US-GAAP
|
Operating Leases, Rent Expense, Net
|
US-GAAP
|
Operating Lease, Weighted Average Discount Rate, Percent
|
US-GAAP
|
Operating Loss Carryforwards
|
US-GAAP
|
Other Accrued Liabilities, Current
|
US-GAAP
|
Other Accrued Liabilities, Noncurrent
|
US-GAAP
|
Other Assets
|
US-GAAP
|
Other Assets, Current
|
US-GAAP
|
Other Assets, Miscellaneous, Noncurrent
|
US-GAAP
|
Other Assets, Noncurrent
|
US-GAAP
|
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Recognized in Net Periodic Benefit Cost, before Tax (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
|
US-GAAP
|
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent
|
US-GAAP
|
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Benefit Cost, before Tax (Deprecated 2013-01-31)
|
US-GAAP
|
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax
|
US-GAAP
|
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
|
US-GAAP
|
Other Comprehensive Income (Loss) before Reclassifications, Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), before Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent
|
US-GAAP
|
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Net of Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax
|
US-GAAP
|
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax (Deprecated 2013-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, before Tax (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax (Deprecated 2012-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax (Deprecated 2013-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax (Deprecated 2013-01-31)
|
US-GAAP
|
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax
|
US-GAAP
|
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax
|
US-GAAP
|
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
|
US-GAAP
|
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
|
US-GAAP
|
Other Cost and Expense, Operating
|
US-GAAP
|
Other Liabilities, Noncurrent
|
US-GAAP
|
Other Noncash Income (Expense)
|
US-GAAP
|
Other Noncurrent Liabilities (Deprecated 2011-01-31)
|
US-GAAP
|
Other Nonoperating Income (Expense)
|
US-GAAP
|
Liability, Other Postretirement Defined Benefit Plan, Noncurrent
|
US-GAAP
|
Other Revenue, Net (Deprecated 2018-01-31)
|
US-GAAP
|
Other Tax Expense (Benefit)
|
US-GAAP
|
Passenger Revenue (Deprecated 2018-01-31)
|
US-GAAP
|
Passenger Revenue, Mainline (Deprecated 2018-01-31)
|
US-GAAP
|
Passenger Revenue, Regional (Deprecated 2018-01-31)
|
US-GAAP
|
Payments for (Proceeds from) Other Investing Activities
|
US-GAAP
|
Payments for (Proceeds from) Productive Assets
|
US-GAAP
|
Payments for (Proceeds from) Short-term Investments
|
US-GAAP
|
Payments for Repurchase of Common Stock
|
US-GAAP
|
Payments for Restructuring
|
US-GAAP
|
Payment for Debt Extinguishment or Debt Prepayment Cost
|
US-GAAP
|
Payments of Debt Issuance Costs
|
US-GAAP
|
Payments of Dividends
|
US-GAAP
|
Payments of Ordinary Dividends, Common Stock
|
US-GAAP
|
Payments of Financing Costs
|
US-GAAP
|
Payments of Ordinary Dividends
|
US-GAAP
|
Payment, Tax Withholding, Share-based Payment Arrangement
|
US-GAAP
|
Payments to Acquire Equity Method Investments
|
US-GAAP
|
Payments to Acquire Productive Assets
|
US-GAAP
|
Payments to Acquire Short-term Investments
|
US-GAAP
|
Pension and Other Postretirement Benefits Cost (Reversal of Cost)
|
US-GAAP
|
Pension and Other Postretirement Benefits Expense (Reversal of Expense), Noncash
|
US-GAAP
|
Liability, Defined Benefit Plan, Noncurrent
|
US-GAAP
|
Payment for Pension Benefits
|
US-GAAP
|
Preferred Stock, Dividend Rate, Percentage
|
US-GAAP
|
Preferred Stock, Par or Stated Value Per Share
|
US-GAAP
|
Preferred Stock, Shares Authorized
|
US-GAAP
|
Preferred Stock, Shares Issued
|
US-GAAP
|
Preferred Stock, Value, Issued
|
US-GAAP
|
Prepaid Expense and Other Assets, Current
|
US-GAAP
|
Prepaid Expense and Other Assets, Noncurrent
|
US-GAAP
|
Price Risk Cash Flow Hedge Derivative, at Fair Value, Net
|
US-GAAP
|
Price Risk Fair Value Hedge Derivative, at Fair Value, Net
|
US-GAAP
|
Proceeds from Issuance of Common Stock
|
US-GAAP
|
Proceeds from Issuance of Long-term Debt
|
US-GAAP
|
Proceeds from Issuance of Secured Debt
|
US-GAAP
|
Proceeds from Issuance of Secured Tax Exempt Debt
|
US-GAAP
|
Proceeds from Issuance of Unsecured Debt
|
US-GAAP
|
Proceeds from Issuance or Sale of Equity
|
US-GAAP
|
Proceeds from Legal Settlements
|
US-GAAP
|
Proceeds from Long-term Capital Lease Obligations
|
US-GAAP
|
Proceeds from (Payments for) Other Financing Activities
|
US-GAAP
|
Proceeds from Sale of Debt Securities, Available-for-sale
|
US-GAAP
|
Proceeds from Sale of Intangible Assets
|
US-GAAP
|
Proceeds from Sale of Other Assets
|
US-GAAP
|
Proceeds from Sale of Other Investments
|
US-GAAP
|
Proceeds from Sale of Productive Assets
|
US-GAAP
|
Proceeds from Sale of Property, Plant, and Equipment
|
US-GAAP
|
Proceeds from Sale of Short-term Investments
|
US-GAAP
|
Proceeds from Secured Notes Payable
|
US-GAAP
|
Proceeds from Stock Options Exercised
|
US-GAAP
|
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization
|
US-GAAP
|
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
|
US-GAAP
|
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization
|
US-GAAP
|
Property, Plant and Equipment, Gross
|
US-GAAP
|
Property, Plant and Equipment, Net
|
US-GAAP
|
Property, Plant and Equipment, Other, Gross
|
US-GAAP
|
Property, Plant and Equipment, Other, Accumulated Depreciation
|
US-GAAP
|
Property, Plant and Equipment, Other, Net
|
US-GAAP
|
Property, Plant, and Equipment, Owned, Accumulated Depreciation
|
US-GAAP
|
Property, Plant, and Equipment, Salvage Value
|
US-GAAP
|
Receivables, Net, Current
|
US-GAAP
|
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
|
US-GAAP
|
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent
|
US-GAAP
|
Reclassification from AOCI, Current Period, Tax
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, to be Paid, after Year Five
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, to be Paid, Year Five
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, to be Paid, Year Four
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, to be Paid, Year Two
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, to be Paid, Year Three
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, to be Paid, Year One
|
US-GAAP
|
Recorded Unconditional Purchase Obligation, Minimum Quantity Required
|
US-GAAP
|
Reorganization Items
|
US-GAAP
|
Repayments of Debt and Lease Obligation
|
US-GAAP
|
Repayments of Long-term Debt
|
US-GAAP
|
Restricted Cash and Cash Equivalents
|
US-GAAP
|
Restricted Cash and Investments, Current
|
US-GAAP
|
Restricted Cash, Current
|
US-GAAP
|
Restricted Stock, Value, Shares Issued Net of Tax Withholdings
|
US-GAAP
|
Restructuring and Related Cost, Number of Positions Eliminated
|
US-GAAP
|
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent
|
US-GAAP
|
Restructuring Charges
|
US-GAAP
|
Restructuring Costs and Asset Impairment Charges
|
US-GAAP
|
Restructuring Reserve
|
US-GAAP
|
Restructuring Reserve, Accrual Adjustment (Deprecated 2016-01-31)
|
US-GAAP
|
Restructuring Reserve, Period Expense (Deprecated 2012-01-31)
|
US-GAAP
|
Restructuring Reserve, Settled With Cash (Deprecated 2013-01-31)
|
US-GAAP
|
Restructuring Reserve, Settled Without Cash (Deprecated 2013-01-31)
|
US-GAAP
|
Restructuring Reserve, Settled without Cash (Deprecated 2016-01-31)
|
US-GAAP
|
Retained Earnings (Accumulated Deficit)
|
US-GAAP
|
Revenue from Contract with Customer, Excluding Assessed Tax
|
US-GAAP
|
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
|
US-GAAP
|
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
|
US-GAAP
|
Sale and Leaseback Transaction, Gain (Loss), Net
|
US-GAAP
|
Sale Leaseback Transaction, Net Proceeds (Deprecated 2014-01-31)
|
US-GAAP
|
Sale Leaseback Transaction, Net Proceeds, Financing Activities
|
US-GAAP
|
Sale Leaseback Transaction, Net Proceeds, Investing Activities
|
US-GAAP
|
Sale Leaseback Transaction, Rent Expense
|
US-GAAP
|
Revenue, Net (Deprecated 2018-01-31)
|
US-GAAP
|
Sales Revenue, Services, Other (Deprecated 2018-01-31)
|
US-GAAP
|
Sales Revenue, Services, Net (Deprecated 2018-01-31)
|
US-GAAP
|
Selling and Marketing Expense
|
US-GAAP
|
Selling Expense
|
US-GAAP
|
Severance Costs
|
US-GAAP
|
Share-based Payment Arrangement, Noncash Expense
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value (Deprecated 2012-01-31)
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term (Deprecated 2012-01-31)
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
|
US-GAAP
|
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Deprecated 2012-01-31)
|
US-GAAP
|
Shares Issued, Price Per Share
|
US-GAAP
|
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
|
US-GAAP
|
Short-term Investments
|
US-GAAP
|
Special Assessment Bond, Noncurrent
|
US-GAAP
|
Stockholders' Equity Attributable to Parent
|
US-GAAP
|
Stockholders' Equity Note, Stock Split, Conversion Ratio
|
US-GAAP
|
Stock Issued During Period, Shares, Acquisitions
|
US-GAAP
|
Stock Issued During Period, Shares, Conversion of Convertible Securities
|
US-GAAP
|
Stock Issued During Period, Shares, New Issues
|
US-GAAP
|
Stock Issued During Period, Shares, Other
|
US-GAAP
|
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture
|
US-GAAP
|
Stock Issued During Period, Value, Acquisitions
|
US-GAAP
|
Stock Issued During Period, Value, Conversion of Convertible Securities
|
US-GAAP
|
Stock Issued During Period, Value, New Issues
|
US-GAAP
|
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture
|
US-GAAP
|
Stock Repurchased and Retired During Period, Shares
|
US-GAAP
|
Stock Repurchased and Retired During Period, Value
|
US-GAAP
|
Stock Repurchase Program, Authorized Amount (Deprecated 2014-01-31)
|
US-GAAP
|
Stock Repurchase Program, Authorized Amount
|
US-GAAP
|
Stock Repurchase Program, Remaining Authorized Repurchase Amount
|
US-GAAP
|
Tax Credit Carryforward, Amount
|
US-GAAP
|
Tax Credit Carryforward, Deferred Tax Asset (Deprecated 2015-01-31)
|
US-GAAP
|
Tax Cuts and Jobs Act, Income Tax Expense (Benefit)
|
US-GAAP
|
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect
|
US-GAAP
|
Temporary Equity, Interest in Subsidiary Earnings
|
US-GAAP
|
Transfer from Investments
|
US-GAAP
|
Treasury Stock Acquired, Average Cost Per Share
|
US-GAAP
|
Treasury Stock, Retired, Cost Method, Amount
|
US-GAAP
|
Treasury Stock, Shares
|
US-GAAP
|
Treasury Stock, Value
|
US-GAAP
|
Unrecognized Tax Benefits
|
US-GAAP
|
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities
|
US-GAAP
|
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
|
US-GAAP
|
Unusual or Infrequent Item, or Both, Insurance Proceeds
|
US-GAAP
|
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
|
US-GAAP
|
Variable Lease, Cost
|
US-GAAP
|
Weighted Average Number Diluted Shares Outstanding Adjustment
|
US-GAAP
|
Weighted Average Number of Shares Outstanding, Diluted
|
US-GAAP
|
Weighted Average Number of Shares Outstanding, Basic and Diluted
|
US-GAAP
|
Weighted Average Number of Shares Outstanding, Basic
|
US-GAAP
|
Write off of Deferred Debt Issuance Cost
|
US-GAAP
|
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax
|
US-GAAP
|
Payments for Construction in Process
|
US-GAAP
|
Treasury Stock, Shares, Retired
|
US-GAAP
|
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants
|
US-GAAP
|
Payments To Acquire Equity Securities Fv Ni
|
US-GAAP
|
Tax Adjustments, Settlements, and Unusual Provisions
|
US-GAAP
|
Other Investments
|
US-GAAP
|
Accounts Receivable, after Allowance for Credit Loss, Current
|
US-GAAP
|
Capital Expenditures Incurred but Not yet Paid
|
US-GAAP
|
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments
|
US-GAAP
|
Noncash or Part Noncash Acquisition, Investments Acquired
|
US-GAAP
|
Interest Expense Nonoperating
|
US-GAAP
|
Increase (Decrease) in Accounts Payable
|
US-GAAP
|