XML 108 R44.htm IDEA: XBRL DOCUMENT
v3.24.2

Revenue - Air Traffic Liability - Loyalty Program Rollforward (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Change in Contract With Customer, Liability [Roll Forward] |  |  |  |
Beginning balance | $ 4,987 | $ 5,190 | $ 4,916 | $ 5,189
Amounts deferred associated with points awarded | 901 | 903 | 1,794 | 1,750
Ending balance | 4,962 | 5,079 | 4,962 | 5,079
Passenger Customer |  |  |  |
Change in Contract With Customer, Liability [Roll Forward] |  |  |  |
Revenue recognized from points redeemed | (895) | (989) | (1,694) | (1,814)
Other |  |  |  |
Change in Contract With Customer, Liability [Roll Forward] |  |  |  |
Revenue recognized from points redeemed | $ (31) | $ (25) | $ (54) | $ (46)

X
- Definition Change in Contract With Customer, Liability + References No definition available. + Details
Name: | luv_ChangeInContractWithCustomerLiabilityRollForward
Namespace Prefix: | luv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contract With Customer Liability, Air Traffic Liability, Loyalty Program + References No definition available. + Details
Name: | luv_ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgram
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contract With Customer Liability, Air Traffic Liability, Loyalty Program, Awarded Points + References No definition available. + Details
Name: | luv_ContractWithCustomerLiabilityAirTrafficLiabilityLoyaltyProgramAwardedPoints
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Contract With Customer, Liability, Loyalty Program, Revenue Recognized + References No definition available. + Details
Name: | luv_ContractWithCustomerLiabilityLoyaltyProgramRevenueRecognized
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_MajorCustomersAxis=luv_PassengerCustomersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MajorCustomersAxis=us-gaap_OtherCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |