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Commitments And Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
C-17 Program [Member]
aircraft
Jun. 30, 2013
C-17 Program [Member]
Inventory Expenditures And Potential Termination Liabilities [Member]
Jun. 30, 2013
F-15 Program [Member]
Inventory Expenditures And Potential Termination Liabilities [Member]
Jun. 30, 2013
USAF [Member]
C-17 Program [Member]
aircraft
Jun. 30, 2013
International [Member]
C-17 Program [Member]
aircraft
Jun. 30, 2013
Financing Commitment [Member]
Dec. 31, 2012
Financing Commitment [Member]
Jun. 30, 2013
Financing Commitment [Member]
External Credit Rating, Non Investment Grade [Member]
Jun. 30, 2013
ULA Additional Capital Commitment [Member]
Jun. 30, 2013
TotalContractualTradeInValueMaximum [Member]
Commercial Aircraft Commitments [Member]
Dec. 31, 2012
TotalContractualTradeInValueMaximum [Member]
Commercial Aircraft Commitments [Member]
Jun. 30, 2013
Net amounts payable to customers related to probable contractual trade-in commitments [Member]
Commercial Aircraft Commitments [Member]
Dec. 31, 2012
Net amounts payable to customers related to probable contractual trade-in commitments [Member]
Commercial Aircraft Commitments [Member]
Jun. 30, 2013
ProbableContractualTradeInValue [Member]
Commercial Aircraft Commitments [Member]
Dec. 31, 2012
ProbableContractualTradeInValue [Member]
Commercial Aircraft Commitments [Member]
Jun. 30, 2013
Minimum [Member]
Jun. 30, 2013
Maximum [Member]
Liabilities Commitments And Contingencies [Line Items]                                      
Loss Contingency, Range of Possible Loss, Portion Not Accrued $ 886 $ 865                                  
Trade-In Commitment Expiration Date                                   2013 2023
Other Commitment               17,815 18,083 16,622 527 1,448 1,535 133 108 133 108    
Letters of Credit Outstanding, Amount 4,566 4,545                                  
Number of Aircraft Included In Backlog           1 8                        
Loss Contingency, Estimate of Possible Loss       $ 620 $ 85                            
Number of aircraft associated with inventory expenditures and potential termiation liability     12