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Liabilities, Commitments And Contingencies (Schedule Of Estimated Potential Funding Dates For Financing Commitments) (Details) (Financing Commitment [Member], USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Other Commitments, Fiscal Year Maturity [Line Items]    
2015 $ 2,552us-gaap_OtherCommitmentDueInNextTwelveMonths  
2016 3,710us-gaap_OtherCommitmentDueInSecondYear  
2017 3,497us-gaap_OtherCommitmentDueInThirdYear  
2018 2,305us-gaap_OtherCommitmentDueInFourthYear  
2019 1,738us-gaap_OtherCommitmentDueInFifthYear  
Thereafter 2,921us-gaap_OtherCommitmentDueAfterFifthYear  
Total 16,723us-gaap_OtherCommitment 17,987us-gaap_OtherCommitment
External Credit Rating, Non Investment Grade [Member]
    
Other Commitments, Fiscal Year Maturity [Line Items]    
Total $ 16,723us-gaap_OtherCommitment
/ ba_CommitmentTypeAxis
= ba_FinancingCommitmentMember
/ us-gaap_ExternalCreditRatingByGroupingAxis
= us-gaap_ExternalCreditRatingNonInvestmentGradeMember