XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.23.1

Revenue - Air Traffic Liability Breakout (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Revenue from Contract with Customer [Abstract] |  |  |  |
Air traffic liability - passenger travel and ancillary passenger services | $ 4,007 | $ 3,061 |  |
Air traffic liability - loyalty program | 5,190 | 5,189 | $ 4,884 | $ 4,789
Total Air traffic liability | $ 9,197 | $ 8,250 | $ 8,610 | $ 7,725

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, Passenger Travel And Ancillary Passenger Services + References No definition available. + Details
Name: | luv_ContractWithCustomerLiabilityAirTrafficLiabilityServiceRevenue
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130532-203044 + Details
Name: | us-gaap_ContractWithCustomerLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration