XML 81 R60.htm IDEA: XBRL DOCUMENT
v3.22.2

Commitments and contingencies - Narrative (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | ---
Sep. 28, 2021 USD ($) | Aug. 01, 2022 aircraft | Jun. 30, 2022 USD ($) aircraft
Other Commitments [Line Items] |  |  |
Aircrafts to be purchased |  |  | 632
MAX aircrafts to be delivered this year |  |  | 114
Cash Capital Commitments, Boeing Orders |  |  |
Other Commitments [Line Items] |  |  |
Remainder of 2022 | $ |  |  | $ 2,400
2023 | $ |  |  | 2,200
2024 | $ |  |  | 910
2025 | $ |  |  | 845
2026 | $ |  |  | 984
2027 | $ |  |  | 1,000
Thereafter | $ |  |  | 6,300
Payment Guarantee, Dallas Love Field Series 2010 Bonds |  |  |
Other Commitments [Line Items] |  |  |
Principal amount of guarantee | $ |  |  | 79
Net present value of future principal and interest payments | $ |  |  | $ 88
-8 Firm Orders |  |  |
Other Commitments [Line Items] |  |  |
Exercised, 2022 |  |  | 20
Exercised, 2023 |  |  | 3
Shifted, 2023 |  |  | 17
Aircrafts to be purchased |  |  | 225
Estimated MAX aircrafts to be delivered this year |  |  | 66
-7 Firm Orders |  |  |
Other Commitments [Line Items] |  |  |
Exercised, 2023 |  |  | 4
Aircrafts to be purchased |  |  | 240
Estimated MAX aircrafts to be delivered this year |  |  | 0
-7 Firm Orders | Subsequent Event |  |  |
Other Commitments [Line Items] |  |  |
Converted, 2022 |  | 48 |
Love Field Airport Modernization Corporation | Series 2010 Bonds |  |  |
Other Commitments [Line Items] |  |  |
Cash payment | $ | $ 310 |  |

X
- Definition Other Commitment, Estimated Number Of Aircrafts To Be Delivered, Remainder Of Fiscal Year + References No definition available. + Details
Name: | luv_OtherCommitmentEstimatedNumberOfAircraftsToBeDeliveredRemainderOfFiscalYear
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Number Of Aircrafts To Be Delivered, Remainder Of Fiscal Year + References No definition available. + Details
Name: | luv_OtherCommitmentNumberOfAircraftsToBeDeliveredRemainderOfFiscalYear
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Number Of Aircrafts To Be Purchased + References No definition available. + Details
Name: | luv_OtherCommitmentNumberOfAircraftsToBePurchased
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Number Of Options Converted, Remainder Of Fiscal Year + References No definition available. + Details
Name: | luv_OtherCommitmentNumberOfOptionsConvertedRemainderOfFiscalYear
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Other Commitment, Number Of Options Exercised, Remainder Of Fiscal Year + References No definition available. + Details
Name: | luv_OtherCommitmentNumberOfOptionsExercisedRemainderOfFiscalYear
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Other Commitment, Number Of Options Exercised, Year One + References No definition available. + Details
Name: | luv_OtherCommitmentNumberOfOptionsExercisedYearOne
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Other Commitment, Number Of Options Shifted, Year One + References No definition available. + Details
Name: | luv_OtherCommitmentNumberOfOptionsShiftedYearOne
Namespace Prefix: | luv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsMaximumExposure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueAfterFifthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInFifthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInFourthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInSecondYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInThirdYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of commitment classified as other to be paid in remainder of current fiscal year. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsFutureMinimumPaymentsRemainderOfFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=luv_CashCapitalCommitmentsBoeingOrdersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=us-gaap_PaymentGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_AircraftTypeAxis=luv_B737MAX8Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_AircraftTypeAxis=luv_B737MAX7Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=luv_LoveFieldAirportModernizationCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=luv_Series2010BondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |