Arrangements With Off-Balance Sheet Risk (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Guarantees [Abstract]
Offsetting capital lease obligation and IRB asset	$ 271	$ 271

The gross amount of capital lease obligation and IRB asset, which offset in the Consolidated Statements of Financial Position.

No definition available.

Name:	ba_OffsettingCapitalLeaseObligationAndIrbAsset
Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant