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Accounts Receivable (Schedule Of Accounts Receivable) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Accounts Receivables [Line Items]    
Less valuation allowance, Current $ (127)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ (104)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts receivable, Net, Current 7,729us-gaap_AccountsReceivableNetCurrent 6,546us-gaap_AccountsReceivableNetCurrent
U S Government Contracts [Member]    
Accounts Receivables [Line Items]    
Accounts Receivable, Gross, Current 4,281us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_USGovernmentContractsMember
3,604us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_USGovernmentContractsMember
Defense, Space & Security customers [Member]    
Accounts Receivables [Line Items]    
Accounts Receivable, Gross, Current 1,018us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_DefenseSpaceSecurityCustomersMember
[1] 1,073us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_DefenseSpaceSecurityCustomersMember
[1]
Commercial Airplanes customers [Member]    
Accounts Receivables [Line Items]    
Accounts Receivable, Gross, Current 1,749us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_CommercialAirplanesCustomersMember
1,072us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_CommercialAirplanesCustomersMember
Reinsurance Receivables [Member]    
Accounts Receivables [Line Items]    
Accounts Receivable, Gross, Current 512us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_ReinsuranceReceivablesMember
525us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_ReinsuranceReceivablesMember
Other [Member]    
Accounts Receivables [Line Items]    
Accounts Receivable, Gross, Current $ 296us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_OtherAccountReceivableMember
$ 376us-gaap_AccountsReceivableGrossCurrent
/ us-gaap_MajorCustomersAxis
= ba_OtherAccountReceivableMember
[1] Excludes U.S. government contracts