XML 70 R54.htm IDEA: XBRL DOCUMENT v3.6.0.2

Financial Derivative Instruments - Fuel Hedging (Details) gal in Millions	Dec. 31, 2016 gal	[1]
2017
Volume of Fuel Hedging [Line Items]
Fuel Hedged (in gallons)	1,281
2018
Volume of Fuel Hedging [Line Items]
Fuel Hedged (in gallons)	1,185
2019
Volume of Fuel Hedging [Line Items]
Fuel Hedged (in gallons)	305
[1] Due to the types of derivatives utilized by the Company and different price levels of those contracts, these volumes represent the maximum economic hedge in place and may vary significantly as market prices fluctuate.

X

- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:decimalItemType
Balance Type:	na
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:	luv_VolumeOfFuelHedgingLineItems
Namespace Prefix:	luv_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	luv_VolumeOfFuelHedgingAxis=luv_NextYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	luv_VolumeOfFuelHedgingAxis=luv_YearTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	luv_VolumeOfFuelHedgingAxis=luv_ThirdYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: