Name:	ba_DefinedBenefitPlanExpectedFutureGrossBenefitPaymentsInYearFive1
Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
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Expected future gross payments in the fourth fiscal year following the latest fiscal year from a defined benefit plan prior to reduction related to the Medicare Part D subsidy

No definition available.

Name:	ba_DefinedBenefitPlanExpectedFutureGrossBenefitPaymentsInYearFour1
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Data Type:	xbrli:monetaryItemType
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Expected future gross payments in the next fiscal year following the latest fiscal year from a defined benefit plan prior to reduction related to the Medicare Part D subsidy

No definition available.

Name:	ba_DefinedBenefitPlanExpectedFutureGrossBenefitPaymentsInYearOne
Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Expected future gross payments after the five fiscal years following the latest fiscal year from a defined benefit plan prior to reduction related to the Medicare Part D subsidy

No definition available.

Name:	ba_DefinedBenefitPlanExpectedFutureGrossBenefitPaymentsInYearThereafter1
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Data Type:	xbrli:monetaryItemType
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Expected future gross payments in the third fiscal year following the latest fiscal year from a defined benefit plan prior to reduction related to the Medicare Part D subsidy

No definition available.

Name:	ba_DefinedBenefitPlanExpectedFutureGrossBenefitPaymentsInYearThree1
Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
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Expected future gross payments in the second fiscal year following the latest fiscal year from a defined benefit plan prior to reduction related to the Medicare Part D subsidy

No definition available.

Name:	ba_DefinedBenefitPlanExpectedFutureGrossBenefitPaymentsInYearTwo1
Namespace Prefix:	ba_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Gross Benefits Paid

No definition available.

Name:	ba_GrossBenefitsPaidAbstract
Namespace Prefix:	ba_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Pensions

No definition available.

Name:	ba_PensionsAbstract
Namespace Prefix:	ba_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Subsidies

No definition available.

Name:	ba_SubsidiesAbstract
Namespace Prefix:	ba_
Data Type:	xbrli:stringItemType
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Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of prescription drug subsidy receipt expected after fifth fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480266/715-60-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of prescription drug subsidy receipt expected in next fiscal year following current fiscal year.

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of prescription drug subsidy receipt expected in fifth fiscal year following current fiscal year.

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearFive1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of prescription drug subsidy receipt expected in fourth fiscal year following current fiscal year.

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearFour1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of prescription drug subsidy receipt expected in third fiscal year following current fiscal year.

Name:	us-gaap_PrescriptionDrugSubsidyReceiptsYearThree1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of prescription drug subsidy receipt expected in second fiscal year following current fiscal year.