XML 60 R44.htm IDEA: XBRL DOCUMENT
v3.22.4

WORLDWIDE PANDEMIC - Payroll Support Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 2 Months Ended | 5 Months Ended | 6 Months Ended | 12 Months Ended | 14 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2021
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |
Promissory Note |  |  |  | $ 0 | $ 0 | $ 3,683 |
COVID - 19 | United States Department of Treasury |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |
Grant |  |  |  |  |  |  | $ 5,040
Promissory Note |  |  |  |  |  |  | 2,068
Warrants |  |  |  |  |  |  | 85
Total Payroll Support Proceeds |  |  |  |  |  |  | $ 7,193
Warrants (shares) |  |  |  | 4,798 |  |  |
Coronavirus Aid, Relief, And Economic Security Act [Member] | United States Department of Treasury |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |
Grant |  | $ 2,337 |  |  |  |  |
Promissory Note |  | 976 |  |  |  |  |
Warrants |  | 40 |  |  |  |  |
Total Payroll Support Proceeds |  | $ 3,354 |  |  |  |  |
Warrants (shares) |  |  |  |  | 2,676 |  |
Strike price (in USD per share) |  |  |  | $ 36.47 |  |  |
Consolidated Appropriations Act, 2021 [Member] | United States Department of Treasury |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |
Grant |  |  | $ 1,393 |  |  |  |
Promissory Note |  |  | 566 |  |  |  |
Warrants |  |  | 27 |  |  |  |
Total Payroll Support Proceeds |  |  | $ 1,987 |  |  |  |
Warrants (shares) |  |  |  | 1,223 |  |  |
Strike price (in USD per share) |  |  |  | $ 46.28 |  |  |
American Rescue Plan Act Of 2021 [Member] | United States Department of Treasury |  |  |  |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |  |  |  |
Grant | $ 1,310 |  |  |  |  |  |
Promissory Note | 526 |  |  |  |  |  |
Warrants | 18 |  |  |  |  |  |
Total Payroll Support Proceeds | $ 1,852 |  |  |  |  |  |
Warrants (shares) |  |  |  | 899 |  |  |
Strike price (in USD per share) |  |  |  | $ 58.51 |  |  |

X
- Definition Proceeds From Grants + References No definition available. + Details
Name: | luv_ProceedsFromGrants
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from Grants, Notes Payable And Warrants + References No definition available. + Details
Name: | luv_ProceedsFromGrantsNotesPayableAndWarrants
Namespace Prefix: | luv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types: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 The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt). + 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 (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfWarrants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_UnusualOrInfrequentItemLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=luv_COVID19Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=luv_UnitedStatesDepartmentOfTreasuryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=luv_CoronavirusAidReliefAndEconomicSecurityActMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=luv_ConsolidatedAppropriationsAct2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=luv_AmericanRescuePlanActOf2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |