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Investments (Schedule Of Ownership Percentages And Balances Of Equity Method Investments) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]    
Equity method investments $ 1,114us-gaap_EquityMethodInvestments [1] $ 1,164us-gaap_EquityMethodInvestments [1]
Defense, Space & Security [Member] | Network & Space Systems [Member] | United Launch Alliance [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity Method Investment, Ownership Percentage 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= ba_UnitedLaunchAllianceMember
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingDefenseSpaceSecuritySegmentMember
/ us-gaap_SubsegmentsAxis
= ba_NetworkAndSpaceSystemsSegmentMember		 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= ba_UnitedLaunchAllianceMember
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingDefenseSpaceSecuritySegmentMember
/ us-gaap_SubsegmentsAxis
= ba_NetworkAndSpaceSystemsSegmentMember
Equity method investments 916us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= ba_UnitedLaunchAllianceMember
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingDefenseSpaceSecuritySegmentMember
/ us-gaap_SubsegmentsAxis
= ba_NetworkAndSpaceSystemsSegmentMember		 970us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= ba_UnitedLaunchAllianceMember
/ us-gaap_StatementBusinessSegmentsAxis
= ba_BoeingDefenseSpaceSecuritySegmentMember
/ us-gaap_SubsegmentsAxis
= ba_NetworkAndSpaceSystemsSegmentMember
Commercial Airplanes, Network & Space Systems, and Global Services & Support [Member] | Other [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity method investments $ 198us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_OtherInvestmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= ba_CommercialAirplanesNetworkSpaceSystemsandGlobalServicesSupportMember		 $ 194us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= us-gaap_OtherInvestmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= ba_CommercialAirplanesNetworkSpaceSystemsandGlobalServicesSupportMember
[1] Dividends received were $293 and $226 during 2014 and 2013. Retained earnings at December 31, 2014 include undistributed earnings from our equity method investments of $158.