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Contingencies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) lawsuit
Commitments and Contingencies Disclosure [Abstract]
Maximum period of limit for loan repayment	15 years
Maximum period of limit for repayment regarding leases with foreign lenders	25 years
Maximum period of contract range of specified parties related to legal liability	25 years
Asset retirement obligations, noncurrent | $	$ 6
Number of putative class action lawsuits | lawsuit	4

X

- Definition

Maximum period of contract where we indemnify specified parties against legal liability arising out of actions by other parties.

+ References

No definition available.

+ Details

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Namespace Prefix:	jblu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum period of indemnities related to bank loan.

+ References

No definition available.

+ Details

Name:	jblu_MaximumPeriodOfIndemnitiesRelatedToBankLoan
Namespace Prefix:	jblu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum period of indemnities related to leases with foreign lenders.

+ References

No definition available.

+ Details

Name:	jblu_MaximumPeriodOfIndemnitiesRelatedToLeasesWithForeignLenders
Namespace Prefix:	jblu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

+ Details

Name:	us-gaap_AssetRetirementObligationsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

+ Details

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant