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Debt (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 12 Months Ended
Oct. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Debt Instrument [Line Items]        
Debt Instrument, Issuance Date Oct. 31, 2014      
Proceeds from Debt, Net of Issuance Costs $ 838us-gaap_ProceedsFromDebtNetOfIssuanceCosts      
Interest Costs Incurred   504us-gaap_InterestCostsIncurred 548us-gaap_InterestCostsIncurred 625us-gaap_InterestCostsIncurred
Interest Paid   511us-gaap_InterestPaid 551us-gaap_InterestPaid 614us-gaap_InterestPaid
Total debt   9,070us-gaap_DebtAndCapitalLeaseObligations 9,635us-gaap_DebtAndCapitalLeaseObligations  
Customer Financing [Member]        
Debt Instrument [Line Items]        
Customer Financing Asset Used For Collateralizing Debt   362us-gaap_DebtInstrumentCollateralAmount
/ ba_AssetTypeAxis
= ba_CustomerFinancingMember
   
Secured Debt [Member]        
Debt Instrument [Line Items]        
Total debt   213us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember
   
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Available amount under credit facility   5,005us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
   
Revolving Credit Facility [Member] | 364-day Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Available amount under credit facility   2,473us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ ba_CreditFacilityTypeAxis
= ba_ThreeHundredAndSixtyFourDayRevolvingCreditFacilityMember
   
Maturity date of credit line agreements   Nov. 30, 2015    
Revolving Credit Facility [Member] | Five Year Credit Facility [Member] | Five Year Expiration [Member]        
Debt Instrument [Line Items]        
Available amount under credit facility   2,472us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ ba_CreditFacilityTermAxis
= ba_FiveYearExpirationMember
/ ba_CreditFacilityTypeAxis
= ba_FiveYearCreditFacilityMember
   
Maturity date of credit line agreements   Nov. 30, 2019    
Revolving Credit Facility [Member] | Five Year Credit Facility [Member] | Three Year Expiration [Member]        
Debt Instrument [Line Items]        
Available amount under credit facility   60us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ ba_CreditFacilityTermAxis
= ba_ThreeYearExpirationMember
/ ba_CreditFacilityTypeAxis
= ba_FiveYearCreditFacilityMember
   
Maturity date of credit line agreements   Nov. 30, 2017    
Two Point Eight Five Percent due Oct 30,2024 [Member]        
Debt Instrument [Line Items]        
Debt instrument, face amount 300us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ba_TwoPointEightFivePercentdueOct302024Member
     
Debt maturity date Oct. 30, 2024      
Debt Instrument, Interest Rate, Stated Percentage 2.85%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= ba_TwoPointEightFivePercentdueOct302024Member
     
Floating Rate Due Oct 30, 2017 [Member]        
Debt Instrument [Line Items]        
Debt instrument, face amount 250us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ba_FloatingRateDueOct302017Member
     
Debt maturity date Oct. 30, 2017      
Debt Instrument, Description of Variable Rate Basis three-month LIBOR plus 12.5 basis points      
Two Point Three Five Percent due Oct 30,2021 [Member]        
Debt Instrument [Line Items]        
Debt instrument, face amount 300us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= ba_TwoPointThreeFivePercentdueOct302021Member
     
Debt maturity date Oct. 30, 2021      
Debt Instrument, Interest Rate, Stated Percentage 2.35%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= ba_TwoPointThreeFivePercentdueOct302021Member
     
Boeing Capital Corporation [Member]        
Debt Instrument [Line Items]        
Proceeds from Debt, Net of Issuance Costs 544us-gaap_ProceedsFromDebtNetOfIssuanceCosts
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingCapitalCorporationMember
     
Total debt   $ 2,412us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingCapitalCorporationMember
$ 2,577us-gaap_DebtAndCapitalLeaseObligations
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingCapitalCorporationMember