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

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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

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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: