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v3.22.1

Special Items (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Special Items |  |
Federal payroll support grant recognition | $ 0 | $ (288,000,000)
CARES Act employee retention credit | 0 | (1,000,000)
Special items | 0 | (289,000,000)
Special Items, CARES Act Payroll Support | 0 | 288,000,000
Payments to employees | $ 5,000 |
Special Item CARES act employee retention credit |  | $ (1,000,000)

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- Definition Special Item CARES ACT Employee Retention Credit + References No definition available. + Details
Name: | jblu_SpecialItemCARESACTEmployeeRetentionCredit
Namespace Prefix: | jblu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Special items during period + References No definition available. + Details
Name: | jblu_SpecialItems
Namespace Prefix: | jblu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Special Items + References No definition available. + Details
Name: | jblu_SpecialItemsAbstract
Namespace Prefix: | jblu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition special Items CARES Act Employee Retention Credit + References No definition available. + Details
Name: | jblu_SpecialItemsCARESActEmployeeRetentionCredit
Namespace Prefix: | jblu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Special Items, CARES Act Payroll Support + References No definition available. + Details
Name: | jblu_SpecialItemsCARESActPayrollSupport
Namespace Prefix: | jblu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Payments of cash to employees, including wages and salaries, during the current period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585 + Details
Name: | us-gaap_PaymentsToEmployees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration