Revenue Recognition - Current And Non-Current Air Traffic Liability (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Revenue From Contract With Customer [Roll Forward]
Beginning balance	$ 1,000	$ 891
TrueBlue® points redeemed	(327)	(253)
TrueBlue® points earned and sold	317	289
Ending balance	$ 990	$ 927

Value of revenue deferred or cost to provide future products or services, primarily air transportation, associated with programs used by airlines to encourage passenger loyalty by providing rewards geared to the frequency of travel on the sponsoring airline, typically in the form of frequent flyer miles, points, or segments that can be accumulated and converted into free or discounted travel or other redemption options.

No definition available.

Name:	jblu_AirTrafficLiability
Namespace Prefix:	jblu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant