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Liabilities, Commitments And Contingencies (Narrative) (Details)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
aircraft
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Jun. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
aircraft
Dec. 31, 2016
USD ($)
aircraft
Dec. 31, 2015
USD ($)
aircraft
Dec. 31, 2014
USD ($)
Aug. 31, 2016
USD ($)
Dec. 31, 2011
USD ($)
Liabilities Commitments And Contingencies [Line Items]                      
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.             $ (912) $ (224) $ 100    
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities $ 857         $ 853 857 853      
Contingent liabilities on outstanding letters of credit agreements and surety bonds 4,701         4,968 4,701 4,968      
Cash surrender value of life insurance policies 483         487 483 487      
Total value of loans against underlying life insurance policies 456         456 456 456      
Commercial Aircraft Commitments [Member] | Total Contractual Trade In Value Maximum [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Other Commitment 1,485         1,585 1,485 1,585      
Commercial Aircraft Commitments [Member] | Net amounts payable to customers related to probable contractual trade-in commitments [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Other Commitment 126         240 126 240      
Commercial Aircraft Commitments [Member] | Probable Contractual Trade In Value [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Other Commitment 126         240 126 240      
Financing Commitment [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Other Commitment 14,847         $ 16,283 14,847 16,283      
Financing Commitment [Member] | External Credit Rating, Non Investment Grade [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Other Commitment 14,847           $ 14,847        
Minimum [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Trade-In Commitment Expiration Date             2017        
Maximum [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Trade-In Commitment Expiration Date             2026        
F/A-18 Program [Member] | Capitalized Precontract Costs [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Loss Contingency, Estimate of Possible Loss 57           $ 57        
F/A-18 Program [Member] | Potential Termination Liabilities [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Loss Contingency, Estimate of Possible Loss 790           790        
KC-46A Tanker [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Increase/(Decrease) in Earnings from operations due to change in accounting estimate. (312)   $ (573) $ (243) $ (835)   (1,128) $ (835) $ (425)    
KC-46A Tanker [Member] | Capitalized Precontract Costs [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Loss Contingency, Estimate of Possible Loss 311           311        
KC-46A Tanker [Member] | Potential Termination Liabilities [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Loss Contingency, Estimate of Possible Loss $ 1,016           $ 1,016        
B747 aircraft [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Program Accounting Quantity | aircraft 1,555         1,574 1,555 1,574      
Reach-forward loss on commercial aircraft     $ (1,188) $ (70)   $ (885)          
Undelivered Aircraft | aircraft 26           26        
Commercial Crew [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.   $ (162)                  
Commercial Crew [Member] | Reach-Forward Loss [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.   $ (38)                  
Unfunded Priority List | F/A-18 Program [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
number of aircraft | aircraft 12           12        
Kuwait [Member] | F/A-18 Program [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
number of aircraft | aircraft 40           40        
EMD Contract [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Contract Value                     $ 4,900
Low Rate Initial Production [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Contract Value                   $ 2,800  
Ula [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs $ 120         $ 120 $ 120 $ 120      
U.S. Navy [Member] | F/A-18 Program [Member]                      
Liabilities Commitments And Contingencies [Line Items]                      
Number Of Aircraft Included Within Backlog | aircraft 23           23