XML 62 R42.htm IDEA: XBRL DOCUMENT v3.21.1

Revenue - Air Traffic Liability - Loyalty Program Rollforward (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Movement in Deferred Revenue
Air traffic liability - loyalty program - beginning balance	$ 4,447	$ 3,385
Amounts deferred associated with points awarded	466	656
Revenue recognized from points redeemed - Passenger	(278)	(461)
Revenue recognized from points redeemed - Other	(12)	(19)
Air traffic liability - loyalty program - ending balance	$ 4,623	$ 3,561

X

- Definition

Other Revenue Recognized From Points Redeemed

+ References

No definition available.

+ Details

Name:	luv_OtherRevenueRecognizedFromPointsRedeemed
Namespace Prefix:	luv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Passenger Revenue Recognized From Points Redeemed

+ References

No definition available.

+ Details

Name:	luv_PassengerRevenueRecognizedFromPointsRedeemed
Namespace Prefix:	luv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Revenue Amounts Deferred Associated With Points Awarded

+ References

No definition available.

+ Details

Name:	luv_RevenueAmountsDeferredAssociatedWithPointsAwarded
Namespace Prefix:	luv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of deferred income and obligation to transfer product and 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 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_MovementInDeferredRevenueRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration