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Share-Based Compensation And Other Compensation Arrangements (Schedule Of Stock Unit Activity) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Weighted average remaining contractual life (in years) 5 years 11 months 4 days
Incentive Program Restricted Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Number of units, Outstanding at beginning of year 3,722,317us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Number of units, Granted 729,603us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Number of units, Dividends 72,387ba_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendsInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Number of units, Forfeited (177,986)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Number of units, Distributed (1,313,782)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Number of units, Outstanding at end of year 3,032,539us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Unrecognized compensation cost 94us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramRestrictedStockUnitsMember
Weighted average remaining contractual life (in years) 1 year 8 months
Other Restricted Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Number of units, Outstanding at beginning of year 1,132,930us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Number of units, Granted 288,600us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Number of units, Dividends 25,833ba_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendsInPeriod
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Number of units, Forfeited (13,962)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Number of units, Distributed (286,303)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Number of units, Outstanding at end of year 1,147,098us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Unrecognized compensation cost 41us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_PlanNameAxis
= ba_OtherRestrictedStockUnitsMember
Weighted average remaining contractual life (in years) 2 years 3 months 15 days
Incentive Program Performance Based Restricted Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Number of units, Outstanding at beginning of year   
Number of units, Granted 662,215us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramPerformanceBasedRestrictedStockUnitsMember
Number of units, Dividends 10,497ba_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendsInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramPerformanceBasedRestrictedStockUnitsMember
Number of units, Forfeited (49,610)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramPerformanceBasedRestrictedStockUnitsMember
Number of units, Distributed 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramPerformanceBasedRestrictedStockUnitsMember
Number of units, Outstanding at end of year 623,102us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramPerformanceBasedRestrictedStockUnitsMember
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]  
Unrecognized compensation cost 53us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_PlanNameAxis
= ba_IncentiveProgramPerformanceBasedRestrictedStockUnitsMember
Weighted average remaining contractual life (in years) 2 years 1 month 15 days