XML 17 R42.htm IDEA: XBRL DOCUMENT v2.4.1.9

Fair Value Instruments - Carrying and Estimated Fair Value of Debt (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2006	Mar. 31, 2015
5.75% Notes due 2016
Debt Instrument [Line Items]
Stated interest rate	5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2016Member
5.75% Notes due 2016 | Unsecured Debt
Debt Instrument [Line Items]
Carrying amount of debt		$ 311us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Stated interest rate		5.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
5.25% Convertible Senior Notes due 2016 | Convertible Debt
Debt Instrument [Line Items]
Carrying amount of debt		113us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_ConvertibleDebtDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember
Stated interest rate		5.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_ConvertibleDebtDue2016Member / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember
5.125% Notes due 2017 | Unsecured Debt
Debt Instrument [Line Items]
Carrying amount of debt		314us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2017Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Stated interest rate		5.125%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2017Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
French Credit Agreements due 2018 - 1.06% | Notes Payable to Banks
Debt Instrument [Line Items]
Carrying amount of debt		36us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_CreditAgreementsDue2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Stated interest rate		1.06%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_CreditAgreementsDue2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Fixed-rate 737 Aircraft Notes payable through 2018 - 7.02% | Notes Payable to Banks
Debt Instrument [Line Items]
Carrying amount of debt		22us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_NotesPayableAircraftFixedRateThrough2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Stated interest rate		7.02%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_NotesPayableAircraftFixedRateThrough2018Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
2.75% Notes Due 2019 | Unsecured Debt
Debt Instrument [Line Items]
Carrying amount of debt		305us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2019MemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Stated interest rate		2.75%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2019MemberMember / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Term Loan Agreement due 2019 - 6.315% | Notes Payable to Banks
Debt Instrument [Line Items]
Carrying amount of debt		169us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue05062019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Stated interest rate		6.315%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue05062019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Term Loan Agreement due 2019 - 6.84% | Notes Payable to Banks
Debt Instrument [Line Items]
Carrying amount of debt		67us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue07012019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Stated interest rate		6.84%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue07012019Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Term Loan Agreement due 2020 - 5.223% | Notes Payable to Banks
Debt Instrument [Line Items]
Carrying amount of debt		362us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue2020Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Stated interest rate		5.223%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue2020Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Floating-rate 737 Aircraft Notes payable through 2020 | Notes Payable to Banks
Debt Instrument [Line Items]
Carrying amount of debt		288us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_NotesPayableAircraftFloatingRateThrough2020Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Pass Through Certificates due 2022 - 6.24% | Enhanced Equipment Trust Certificate
Debt Instrument [Line Items]
Carrying amount of debt		347us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_TotalPassThroughCertificatesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_EnhancedEquipmentTrustCertificateMember
Stated interest rate		6.24%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_TotalPassThroughCertificatesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_EnhancedEquipmentTrustCertificateMember
7.375% Debentures due 2027 | Unsecured Debt
Debt Instrument [Line Items]
Carrying amount of debt		134us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2027Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Stated interest rate		7.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2027Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Level 2 | 5.75% Notes due 2016 | Unsecured Debt
Debt Instrument [Line Items]
Notes Payable, Fair Value		334us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2016Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Level 2 | 5.25% Convertible Senior Notes due 2016 | Convertible Debt
Debt Instrument [Line Items]
Notes Payable, Fair Value		330us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_ConvertibleDebtDue2016Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember
Level 2 | 5.125% Notes due 2017 | Unsecured Debt
Debt Instrument [Line Items]
Notes Payable, Fair Value		336us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2017Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Level 2 | 2.75% Notes Due 2019 | Unsecured Debt
Debt Instrument [Line Items]
Notes Payable, Fair Value		313us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2019MemberMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Level 2 | Pass Through Certificates due 2022 - 6.24% | Enhanced Equipment Trust Certificate
Debt Instrument [Line Items]
Notes Payable, Fair Value		400us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_TotalPassThroughCertificatesMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_EnhancedEquipmentTrustCertificateMember
Level 2 | 7.375% Debentures due 2027 | Unsecured Debt
Debt Instrument [Line Items]
Loans Payable, Fair Value		162us-gaap_LoansPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_UnsecuredSeniorNotesDue2027Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_UnsecuredDebtMember
Level 3 | French Credit Agreements due 2018 - 1.06% | Notes Payable to Banks
Debt Instrument [Line Items]
Notes Payable, Fair Value		36us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_CreditAgreementsDue2018Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Level 3 | Fixed-rate 737 Aircraft Notes payable through 2018 - 7.02% | Notes Payable to Banks
Debt Instrument [Line Items]
Notes Payable, Fair Value		22us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_NotesPayableAircraftFixedRateThrough2018Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Level 3 | Term Loan Agreement due 2019 - 6.315% | Notes Payable to Banks
Debt Instrument [Line Items]
Loans Payable, Fair Value		169us-gaap_LoansPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue05062019Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Level 3 | Term Loan Agreement due 2019 - 6.84% | Notes Payable to Banks
Debt Instrument [Line Items]
Loans Payable, Fair Value		73us-gaap_LoansPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue07012019Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Level 3 | Term Loan Agreement due 2020 - 5.223% | Notes Payable to Banks
Debt Instrument [Line Items]
Loans Payable, Fair Value		356us-gaap_LoansPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_TermLoanAgreementDue2020Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Level 3 | Floating-rate 737 Aircraft Notes payable through 2020 | Notes Payable to Banks
Debt Instrument [Line Items]
Notes Payable, Fair Value		$ 282us-gaap_NotesPayableFairValueDisclosure / us-gaap_DebtInstrumentAxis = luv_NotesPayableAircraftFloatingRateThrough2020Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember

X

- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-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)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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X

- 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

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X

- Definition

Fair value portion of contractual obligation to pay money on demand or on fixed or determinable dates.

+ References

No definition available.

+ Details

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X

- Definition

Fair value portion of notes payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 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 210.5-02.19,20,22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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