XML 40 R27.htm IDEA: XBRL DOCUMENT v3.22.1

WORLDWIDE PANDEMIC - Payroll Support Program (Details) - United States Department of Treasury - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	14 Months Ended
	Jun. 30, 2021	Mar. 31, 2022
COVID - 19
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
PSP1
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
PSP2
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
PSP3
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 http://asc.fasb.org/extlink&oid=123467817&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 http://asc.fasb.org/extlink&oid=123570139&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 http://asc.fasb.org/extlink&oid=123570139&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:	srt_CounterpartyNameAxis=luv_UnitedStatesDepartmentOfTreasuryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_UnusualOrInfrequentItemAxis=luv_COVID19Member
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: