XML 105 R90.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Boeing 737 MAX Aircraft Grounding (Details) $ in Millions | Dec. 31, 2019 USD ($) aircraft
--- | ---
Number of Aircraft Grounded Under Emergency Order | 34
After-Tax Potential Concessions and Other Considerations Announced July 2019 | $ | $ 4,900
Pre-Tax Potential Concessions and Other Considerations Announced January 2020 | $ | $ 2,600
Number of Aircraft Not Delivered Due to Grounding Under Emergency Order | 41
Reduction to Flight Equipment | $ | $ 86
Contract to Own Aircraft |
Number of Aircraft Not Delivered Due to Grounding Under Emergency Order | 28
Contract to Lease Aircraft |
Number of Aircraft Not Delivered Due to Grounding Under Emergency Order | 13
B-737-Max |
Owned Assets, Number of Units | 31

X
- Definition After-Tax Potential Concessions and Other Considerations Announced July 2019 + References No definition available. + Details
Name: | luv_AfterTaxPotentialConcessionsandOtherConsiderationsAnnouncedJuly2019
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 Number of Aircraft Not Delivered Due to Grounding Under Emergency Order + References No definition available. + Details
Name: | luv_NumberofAircraftNotDeliveredDuetoGroundingUnderEmergencyOrder
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units (items of property) owned. + References No definition available. + Details
Name: | luv_OwnedAssetsNumberOfUnits
Namespace Prefix: | luv_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Pre-Tax Potential Concessions and Other Considerations Announced January 2020 + References No definition available. + Details
Name: | luv_PreTaxPotentialConcessionsandOtherConsiderationsAnnouncedJanuary2020
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reduction to Flight Equipment + References No definition available. + Details
Name: | luv_ReductiontoFlightEquipment
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | luv_AssetDispositionAxis=luv_ContracttoOwnAircraftMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | luv_AssetDispositionAxis=luv_ContracttoLeaseAircraftMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_AircraftTypeAxis=srt_B737MaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |