Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended														9 Months Ended		1 Months Ended	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Mar. 31, 2014 C-17 Program [Member] Inventory Expenditures And Termination Liabilities [Member]	Sep. 30, 2014 C-17 Program [Member] Capitalized Precontract Costs [Member]	Sep. 30, 2014 C-17 Program [Member] Potential Termination Liabilities [Member]	Sep. 30, 2014 F-18 Program [Member] U.S. Navy [Member] aircraft	Sep. 30, 2014 Financing Commitment [Member]	Dec. 31, 2013 Financing Commitment [Member]	Sep. 30, 2014 Financing Commitment [Member] External Credit Rating, Non Investment Grade [Member]	Sep. 30, 2014 Commitments to ULA [Member]	Sep. 30, 2014 Total Contractual Trade-In Commitment [Member] Commercial Aircraft Commitments [Member]	Dec. 31, 2013 Total Contractual Trade-In Commitment [Member] Commercial Aircraft Commitments [Member]	Sep. 30, 2014 Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments [Member] Commercial Aircraft Commitments [Member]	Dec. 31, 2013 Net Amounts Payable to Customers Related to Probable Contractual Trade-In Commitments [Member] Commercial Aircraft Commitments [Member]	Sep. 30, 2014 Fair Value of Trade In Value of Aircraft [Member] Commercial Aircraft Commitments [Member]	Dec. 31, 2013 Fair Value of Trade In Value of Aircraft [Member] Commercial Aircraft Commitments [Member]	Sep. 30, 2014 Minimum [Member]	Sep. 30, 2014 Maximum [Member]	Oct. 22, 2014 Subsequent Event [Member] C-17 Program [Member] aircraft	Jun. 30, 2014 Commercial Airplanes Segment [Member]	Jun. 30, 2014 Boeing Defense Space Security Segment [Member]	Jun. 30, 2014 KC-46A Tanker [Member]
Quarterly Estimate Adjustment [Line Items]
Increase/(Decrease) in Earnings from operations due to change in accounting estimate.	$ 91	$ 20	$ (54)	$ 184																			$ (238)	$ (187)	$ (425)
Commitments And Contingencies [Line Items]
Loss Contingency, Range of Possible Loss, Portion Not Accrued	884		884		928
Trade-In Commitment Expiration Date																				2014	2026
Other Commitment										16,662	17,987	16,662	527	2,396	1,605	490	325	490	325
Letters of Credit Outstanding, Amount	4,073		4,073		4,376
Inventory Write-down						48
Number of Aircraft Orders																						2
Number of Aircraft Included In Backlog									76
Number of unsold aircraft																						8
Loss Contingency, Estimate of Possible Loss							$ 1,297	$ 578