Entry into Merger Agreement with Spirit Airlines	3 Months Ended
Entry into Merger Agreement with Spirit Airlines	Mar. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Entry into Merger Agreement with Spirit Airlines	Entry into Merger Agreement with Spirit Airlines As previously disclosed, on July 28, 2022, JetBlue entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Spirit and Sundown Acquisition Corp., a Delaware corporation and a direct wholly owned subsidiary of JetBlue (“Merger Sub”), pursuant to which and subject to the terms and conditions therein, Merger Sub will merge with and into Spirit, with Spirit continuing as the surviving corporation (the “Merger”). As a result of the Merger, each existing share (“Share”) of Spirit’s common stock, par value $0.0001 per share, will be converted at the effective time of the Merger into the right to receive an amount in cash per Share, without interest, equal to (a) $33.50 minus (b) (i) to the extent paid, an amount in cash equal to $2.50 per Share and (ii) the lesser of (A) $1.15 and (B) the product of (1) $0.10 multiplied by (2) the number of Additional Prepayments (as defined below) paid prior to the date of the closing of the Merger (the “Closing Date”) (such amount in subclause (B), the “Aggregate Additional Prepayment Amount”). On or prior to the last business day of each calendar month commencing after December 31, 2022, until the earlier of (a) the Closing Date and (b) the termination of the Merger Agreement in accordance with its terms, JetBlue will pay or cause to be paid to the holders of record of outstanding Shares as of a date not more than five business days prior to the last business day of such month, an amount in cash equal to $0.10 per Share (such amount, the “Additional Prepayment Amount,” each such monthly payment, an “Additional Prepayment”). During the quarter ending on March 31, 2023, JetBlue has made an aggregate of $33 million in Additional Prepayments to Spirit Shareholders resulting in a total prepayment of $330 million. This prepayment is included in other assets in the Company's consolidated balance sheets as of March 31, 2023. The Closing is subject to the satisfaction or waiver of certain closing conditions, including, among other things, the receipt of Spirit stockholder approval, which was obtained on October 19, 2022, the receipt of applicable regulatory approvals, and the absence of any law or order prohibiting the consummation of the transactions. Spirit, JetBlue, and Merger Sub each make certain customary representations, warranties and covenants, as applicable, in the Merger Agreement, and the Merger Agreement contains certain termination rights for JetBlue and Spirit which, in certain cases, will result in the payment of termination fees by JetBlue or Spirit, as applicable. Refer to Note 3 for further detail of the $3.5 billion Senior Secured Bridge Facility issued to fund the purchase of Spirit. On November 3, 2022, 25 individual consumers filed suit in the U.S. District Court for the Northern District of California against JetBlue and Spirit seeking to enjoin the Merger, alleging that it violates Section 7 of the Clayton Act (the “Private Merger Lawsuit”). The lawsuit also seeks to enjoin the NEA. On March 7, 2023, the U.S. Department of Justice, along with the Attorneys General of two states and the District of Columbia filed suit in the U.S. District Court for the District of Massachusetts against JetBlue and Spirit, alleging that the Merger violates Section 7 of the Clayton Act (the “Government Merger Lawsuit”). On March 29, 2023, the Private Merger Lawsuit was transferred to the District of Massachusetts. On March 31, the Attorneys General of four additional states joined the Government Merger Lawsuit. The court set a trial date of October 16, 2023 for the Government Merger Lawsuit. The Private Merger Lawsuit does not yet have a trial date. An adverse ruling in either lawsuit could adversely impact our ability to achieve the intended benefits of the Merger and could have an adverse impact on our business, financial condition, and results of operations.