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Customer Financing (Financing Receivable Credit Quality Indicators) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Carrying value of financing receivables $ 1,855ba_TotalFinancingReceivables $ 1,905ba_TotalFinancingReceivables
B B B Credit Rating [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Carrying value of financing receivables 1,028ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_BBBCreditRatingMember		 1,055ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_BBBCreditRatingMember
B Credit Rating [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Carrying value of financing receivables 633ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_BCreditRatingMember		 633ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_BCreditRatingMember
C C C Credit Rating [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Carrying value of financing receivables 106ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_CCCCreditRatingMember		 131ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_CCCCreditRatingMember
Other Credit Rating [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Carrying value of financing receivables $ 88ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_OtherCreditRatingMember		 $ 86ba_TotalFinancingReceivables
/ us-gaap_InternalCreditAssessmentAxis
= ba_OtherCreditRatingMember