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Schedule Of Unallocated Items and Eliminations (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information [Line Items]    
Share-based plans $ (50)us-gaap_ShareBasedCompensation $ (52)us-gaap_ShareBasedCompensation
Earnings from operations 2,019us-gaap_OperatingIncomeLoss 1,542us-gaap_OperatingIncomeLoss
Pension Plans, Defined Benefit [Member]    
Segment Reporting Information [Line Items]    
Pension and Postretirement Expense (785)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
(1,035)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
Other Postretirement Benefit Plans, Defined Benefit [Member]    
Segment Reporting Information [Line Items]    
Pension and Postretirement Expense (92)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
(71)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Unallocated items, eliminations and other [Member]    
Segment Reporting Information [Line Items]    
Share-based plans (21)us-gaap_ShareBasedCompensation
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
(24)us-gaap_ShareBasedCompensation
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Deferred compensation (58)us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
7us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Amortization of previously capitalized interest (29)us-gaap_InterestCostsCapitalized
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
(18)us-gaap_InterestCostsCapitalized
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Eliminations and other unallocated items (140)ba_Eliminationsandotherunallocateditems
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
(194)ba_Eliminationsandotherunallocateditems
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Sub-total (248)ba_OperatingIncomeLossExcludingUnallocatedPensionAndPostretirementAdjustments
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
(229)ba_OperatingIncomeLossExcludingUnallocatedPensionAndPostretirementAdjustments
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Pension and Postretirement Expense (113)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
(553)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Earnings from operations (361)us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
(782)us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
Unallocated items, eliminations and other [Member] | Pension Plans, Defined Benefit [Member]    
Segment Reporting Information [Line Items]    
Pension and Postretirement Expense (152)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
(576)us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_PensionPlansDefinedBenefitMember
Unallocated items, eliminations and other [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member]    
Segment Reporting Information [Line Items]    
Pension and Postretirement Expense $ 39us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
$ 23us-gaap_PensionAndOtherPostretirementBenefitExpense
/ us-gaap_ConsolidationItemsAxis
= ba_UnallocateditemseliminationsandotherMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember