Name:	ba_AbnormalProductioncost.
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Changes in estimated revenues, cost of sales and the related effect on operating income are recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a contract’s percent complete

No definition available.

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Data Type:	xbrli:monetaryItemType
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The portion of the aggregate amount of manufacturing or production costs and any related deferred costs (for example, initial tooling costs) that exceeds the aggregate estimated cost of all in-process and delivered units on the basis of the estimated average cost of all units expected to be produced under long-term contracts and programs not yet complete, which will be absorbed in cost of sales based on existing firm orders at the latest balance sheet date.

No definition available.

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

Carrying amount as of the balance sheet date of unamortized tooling and other non-recurring costs related to commercial aircraft programs.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Carrying value of capitalized payments made in advance for inventory that is expected to be received within one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(8))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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

Amount of deferred costs for long-term contracts and programs. Includes, but is not limited to, initial tooling costs and deferred production costs.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(d)(i))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
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Amount of unpriced change orders or other similar items subject to uncertainty concerning their determination or ultimate realization included in inventory as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(d)(ii))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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

Amount before valuation and LIFO reserves, and progress payments, of inventory associated with long-term contracts, expected to be sold, or consumed within one year or operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(a)(2))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_InventoryForLongTermContractsOrPrograms
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_InventoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The portion of the aggregate amount of manufacturing or production costs and any related deferred costs (for example, initial tooling costs) that exceeds the aggregate estimated cost of all in-process and delivered units on the basis of the estimated average cost of all units expected to be produced under long-term contracts and programs not yet complete, which would not be absorbed in cost of sales based on existing firm orders at the latest balance sheet date.

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

Name:	srt_AircraftTypeAxis=ba_AirplaneProgram787Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_AircraftTypeAxis=ba_AirplaneProgram737Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_AircraftTypeAxis=ba_AirplaneProgram777xMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_PublicUtilitiesInventoryAxis=ba_CapitalizedPrecontractCostsMember
Namespace Prefix:
Data Type:	na
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Period Type: