XML 37 R26.htm IDEA: XBRL DOCUMENT
v3.20.2

Worldwide Pandemic (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended | 60 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) employees shares | Jun. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) employees shares | Sep. 30, 2019 USD ($) | Apr. 19, 2030 | Jul. 30, 2020 USD ($) | May 29, 2020 USD ($) | Apr. 21, 2020 USD ($) | Apr. 09, 2020 $ / shares | Mar. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
Proceeds from term loan credit facility | $ 0 |  | $ 0 | $ 3,683 | $ 0 |  |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  |  |  | 25.90% | 22.00% |  |  |  |  |  |  |
Proceeds from Payroll Support Program Grant | $ 3,400 |  |  | $ 3,400 |  |  |  |  |  |  |  |
Cash Raised, Net of Fees |  |  |  | $ 18,900 |  |  |  |  |  |  |  |
Proceeds from Payroll Support Program Grant Received in April |  |  |  |  |  |  |  |  | $ 1,600 |  |  |
Proceeds from Payroll Support Program Grant Received in May |  |  |  |  |  |  |  | $ 652 |  |  |  |
Proceeds from Payroll Support Program Grant Received in June 2020 |  | $ 652 |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 4,200 |  |  | 4,200 |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Accrual for Employees who Accepted through June 30, 2020 |  | 307 |  |  |  |  |  |  |  |  |  |
Proceeds from Payroll Support Program Grant Received in July 2020 |  |  |  |  |  |  | $ 326 |  |  |  |  |
Proceeds from Payroll Support Program Grant Received in September 2020 | $ 94 |  |  | $ 94 |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 and Extended Emergency Time Off Total Accrued | 1,207 | $ 307 |  | $ 1,207 |  |  |  |  |  |  |  |
Extended Emergency Time Off Accrual for Employees who Accepted through September 30, 2020 | $ 613 |  |  |  |  |  |  |  |  |  |  |
Number of Aircraft Grounded Under Emergency Order | 34 |  |  | 34 |  |  |  |  |  |  |  |
Number of Aircraft in Long-Term Storage | 104 |  |  | 104 |  |  |  |  |  |  |  |
Proceeds from Payroll Support Program Grant Allocated to Fund Salaries, Wages, and Benefits | $ 1,200 |  |  |  |  |  |  |  |  |  |  |
Costs Incurred for Voluntary Separation 2020 and Extended ETO | 1,100 |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 970 |  |  | $ 970 |  |  |  |  |  |  |  | $ 970
Option to Convert to Voluntary Separation Program 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Extended Emergency Time Off Period | 12 months |  |  |  |  |  |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |
Extended Emergency Time Off Period | 6 months |  |  |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |
Extended Emergency Time Off Period | 18 months |  |  |  |  |  |  |  |  |  |  |
Customer Support and Service [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 390 |  |  | 390 |  |  |  |  |  |  |  |
Ground Operations and Provisioning [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 1,060 |  |  | 1,060 |  |  |  |  |  |  |  |
Flight Attendants [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 725 |  |  | 725 |  |  |  |  |  |  |  |
Pilots [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 630 |  |  | 630 |  |  |  |  |  |  |  |
Pilots [Member] | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Extended Emergency Time Off Period | 5 years |  |  |  |  |  |  |  |  |  |  |
Contract groups [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 90 |  |  | 90 |  |  |  |  |  |  |  |
Managerial and Administrative [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 1,140 |  |  | 1,140 |  |  |  |  |  |  |  |
Maintenance [Member] |  |  |  |  |  |  |  |  |  |  |  |
Voluntary Separation Program 2020 Participants | employees | 185 |  |  | 185 |  |  |  |  |  |  |  |
LUV Common Stock Warrants |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding | shares | 2,700,000 |  |  | 2,700,000 |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  |  |  |  |  |  |  |  |  | $ 36.47 |  |
Warrants and Rights Outstanding | $ 40 |  |  | $ 40 |  |  |  |  |  |  |  |
Use Rights [Member] |  |  |  |  |  |  |  |  |  |  |  |
Indefinite-Lived Domestic Slots and Routes | $ 295 |  |  | $ 295 |  |  |  |  |  |  |  |
CARES Act Unsecured Loan | Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 1.00% |  |  | 1.00% |  |  |  |  |  |  |  |
Unsecured Debt | Forecast | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate |  |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable rate (percent) April 21, 2025 and beyond |  |  |  |  |  | 2.00% |  |  |  |  |  |
1.0 Payroll Support Program Loan due 2030 | Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 1.00% |  |  | 1.00% |  |  |  |  |  |  |  |
Carrying amount of debt | $ 976 |  |  | $ 976 |  |  |  |  |  |  |  |
Accordian Feature to Amended 364-Day Term Loan Credit Facility [Member] | Amended 364-Day Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Accordian Feature on Short-term Debt |  |  |  |  |  |  |  |  |  |  | $ 417 |

X
- Definition Accordian Feature on Short-term Debt + References No definition available. + Details
Name: | luv_AccordianFeatureonShorttermDebt
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Cash Raised, Net of Fees + References No definition available. + Details
Name: | luv_CashRaisedNetOfFees
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Costs Incurred for Voluntary Separation 2020 and Extended ETO + References No definition available. + Details
Name: | luv_CostsIncurredForVoluntarySeparation2020AndExtendedETO
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Extended Emergency Time Off Accrual for Employees who Accepted through September 30, 2020 + References No definition available. + Details
Name: | luv_ExtendedEmergencyTimeOffAccrualForEmployeesWhoAcceptedThroughSeptember302020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Extended Emergency Time Off Period + References No definition available. + Details
Name: | luv_ExtendedEmergencyTimeOffPeriod
Namespace Prefix: | luv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Aircraft in Long-Term Storage + References No definition available. + Details
Name: | luv_NumberOfAircraftInLongTermStorage
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Aircraft Grounded Under Emergency Order + References No definition available. + Details
Name: | luv_NumberofAircraftGroundedUnderEmergencyOrder
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proceeds from Payroll Support Program Grant Allocated to Fund Salaries, Wages, and Benefits + References No definition available. + Details
Name: | luv_ProceedsFromPayrollSupportProgramGrantAllocatedToFundSalariesWagesAndBenefits
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Proceeds from Payroll Support Program Grant Received in April 2020 + References No definition available. + Details
Name: | luv_ProceedsFromPayrollSupportProgramGrantReceivedInApril2020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Proceeds from Payroll Support Program Grant Received in July 2020 + References No definition available. + Details
Name: | luv_ProceedsFromPayrollSupportProgramGrantReceivedInJuly2020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Proceeds from Payroll Support Program Grant Received in June 2020 + References No definition available. + Details
Name: | luv_ProceedsFromPayrollSupportProgramGrantReceivedInJune2020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Proceeds from Payroll Support Program Grant Received in May 2020 + References No definition available. + Details
Name: | luv_ProceedsFromPayrollSupportProgramGrantReceivedInMay2020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Proceeds from Payroll Support Program Grant Received in September 2020 + References No definition available. + Details
Name: | luv_ProceedsFromPayrollSupportProgramGrantReceivedInSeptember2020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Proceeds from Payroll Support Program Grant + References No definition available. + Details
Name: | luv_ProceedsfromPayrollSupportProgramGrant
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Voluntary Separation Program 2020 Accrual for Employees who Accepted through June 30, 2020 + References No definition available. + Details
Name: | luv_VoluntarySeparationProgram2020AccrualForEmployeesWhoAcceptedThroughJune302020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Voluntary Separation Program 2020 and Extended Emergency Time Off Total Accrued + References No definition available. + Details
Name: | luv_VoluntarySeparationProgram2020AndExtendedEmergencyTimeOffTotalAccrued
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Voluntary Separation Program 2020 Participants + References No definition available. + Details
Name: | luv_VoluntarySeparationProgram2020Participants
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount, (original cost adjusted for any previously recognized amortization and impairment) as of the balance sheet date, of domestic slots, route authorities, airport operating and gate lease rights and related intangibles. + References No definition available. + Details
Name: | us-gaap_IndefiniteLivedDomesticSlotsAndRoutes
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash inflow from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
Name: | us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | luv_OptionToConvertAxis=luv_OptionToConvertToVoluntarySeparationProgram2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_CustomerSupportAndServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_GroundOperationsAndProvisioningMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_FlightAttendantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_PilotsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_ContractGroupsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_ManagerialAndAdministrativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_WorkgroupAxis=luv_MaintenanceGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=luv_LUVCommonStockWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_UseRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=luv_CARESActUnsecuredLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=luv_A10PayrollSupportProgramLoanDue2030Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_DebtDescriptionAxis=luv_AccordianFeaturetoAmended364DayTermLoanCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=luv_Amended364DayTermLoanCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |