Legal Proceedings Legal Proceedings (Details) $ in Millions	3 Months Ended
Sep. 30, 2015 USD ($)
Legal Proceedings [Abstract]
Loss Contingency, Settlement Agreement Proposed	$ 90

The amount of a proposed settlement agreement related to litigation or other legal issues during the period that has not yet been approved by the court.

No definition available.

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