Commitments and Contingencies - Flight Equipment Commitments (Details) $ in Millions	Mar. 31, 2023 USD ($) aircraft
Unrecorded Unconditional Purchase Obligation [Line Items]
Remainder of 2023 \| $	$ 1,500.0
2024 \| $	2,200.0
2025 \| $	1,700.0
2026 \| $	1,300.0
2027 \| $	1,000.0
Total \| $	$ 7,700.0
2023	28
2024	43
2025	35
2026	26
2027	14
Total	146
Airbus A321neo
Unrecorded Unconditional Purchase Obligation [Line Items]
2023	11
2024	13
2025	11
2026	12
2027	14
Total	61
Airbus A220
Unrecorded Unconditional Purchase Obligation [Line Items]
2023	17
2024	30
2025	24
2026	14
2027	0
Total	85

Unrecorded Unconditional Purchase Obligations

No definition available.

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- Definition

Unrecorded Unconditional Purchase Obligations, Remainder Of Fiscal Year

+ References

No definition available.

+ Details

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- Definition

Unrecorded Unconditional Purchase Obligations, Year Four

+ References

No definition available.

+ Details

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- Definition

Unrecorded Unconditional Purchase Obligations, Year One

+ References

No definition available.

+ Details

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- Definition

Unrecorded Unconditional Purchase Obligations, Year Three

+ References

No definition available.

+ Details

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- Definition

Unrecorded Unconditional Purchase Obligations, Year Two

+ References

No definition available.

+ Details

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Namespace Prefix:	jblu_
Data Type:	xbrli:integerItemType
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- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308

+ Details

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Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Period Type:	instant

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

+ Details

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- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in remainder of current fiscal year.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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