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Liabilities, Commitments and Contingencies - Schedule of 737 Max Customer Concessions and Other Considerations Liability (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Customer Concession And Other Consideration Liability [Roll Forward] |  |  |  |
Beginning balance | $ 1,327 | $ 1,864 | $ 1,864 |
Ending balance |  |  | 1,327 | $ 1,864
B-737 |  |  |  |
Customer Concession And Other Consideration Liability [Roll Forward] |  |  |  |
Beginning balance | 1,327 | 1,864 | 1,864 | 2,940
Reductions for payments made | (681) | (273) | (449) | (1,031)
Reductions for concessions and other in-kind considerations | (221) | (51) | (61) | (29)
Changes in estimates | 510 | (26) | (27) | (16)
Ending balance | $ 935 | $ 1,514 | $ 1,327 | $ 1,864

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- Definition Accrual For Customer Concessions And Other Considerations Liability + References No definition available. + Details
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Namespace Prefix: | ba_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Concessions And Other In-Kind Considerations To Customers + References No definition available. + Details
Name: | ba_ConcessionsAndOtherInKindConsiderationsToCustomers
Namespace Prefix: | ba_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Customer Concession And Other Consideration Liability + References No definition available. + Details
Name: | ba_CustomerConcessionAndOtherConsiderationLiabilityRollForward
Namespace Prefix: | ba_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Grounding Customer Concessions And Other Considerations Liability + References No definition available. + Details
Name: | ba_GroundingCustomerConcessionsAndOtherConsiderationsLiability
Namespace Prefix: | ba_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Payments Made To Customers + References No definition available. + Details
Name: | ba_PaymentsMadeToCustomers
Namespace Prefix: | ba_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | ba_CommercialAircraftProgramsAxis=srt_B737Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |