Financing Receivables and Operating Lease Equipment - Components of Investment in Sales-Type or Finance Leases (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Receivables [Abstract]
Gross lease payments receivable	$ 216	$ 229
Unearned income	(21)	(26)
Net lease payments receivable	195	203
Unguaranteed residual assets
Investment in sales-type leases	$ 195	$ 203

Sales-Type And Direct Financing Leases, Net Lease Payment Receivable

No definition available.

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- Definition

Amount of residual asset covered by residual value guarantee under sales-type and direct financing leases. Excludes guarantee considered to be lease payments for lessor.

+ References

No definition available.

+ Details

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- Definition

The remaining (unamortized) difference between the gross investment in a sales-type and direct financing lease and the cost or carrying amount of the leased property as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-10

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-10

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant