Legal Proceedings (Details) $ in Millions	1 Months Ended
Sep. 30, 2026 USD ($) lawsuit
Legal Proceedings [Abstract]
Number of civil lawsuits \| lawsuit	5
Loss Contingency, Settlement Agreement, Escrow Payment \| $	$ 689

Loss Contingency, Settlement Agreement, Escrow Payment

No definition available.

Name:	ba_LossContingencySettlementAgreementEscrowPayment
Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration