XML 25 R51.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Leases (Details Textual) | Dec. 31, 2019 aircraft
--- | ---
Operating Leases (Textual) [Abstract] |
Number of aircraft variable rate rent | 0
Number of aircraft having purchase options | 41
Aircraft [Domain] |
Operating Leases (Textual) [Abstract] |
Number of aircraft leased | 41
Number of Aircraft Operated at Period End | 259

X
- Definition Number of aircraft having purchase options. + References No definition available. + Details
Name: | jblu_NumberOfAircraftHavingPurchaseOptions
Namespace Prefix: | jblu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of aircraft variable rate rent. + References No definition available. + Details
Name: | jblu_NumberOfAircraftVariableRateRent
Namespace Prefix: | jblu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of aircraft operated by the carrier at the end of the period. + References No definition available. + Details
Name: | jblu_NumberofAircraftOperatedatPeriodEnd
Namespace Prefix: | jblu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Operating leases. + References No definition available. + Details
Name: | jblu_OperatingLeasesTextualAbstract
Namespace Prefix: | jblu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of units (items of property) under operating lease arrangements. + References No definition available. + Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=srt_AircraftTypeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |