XML 85 R41.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Net Income Per Share Parenthetical (Details) (Convertible Debt, 5.25% Convertible Senior Notes due 2016) | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
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Convertible Debt | 5.25% Convertible Senior Notes due 2016 |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate stated in the debt agreement (in hundredths) | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_ConvertibleDebtDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_ConvertibleDebtDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember | 5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_ConvertibleDebtDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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