Investments (Schedule Of Ownership Percentages And Balances Of Equity Method Investments) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 1,164	[1]	$ 1,137	[1]
Defense, Space & Security [Member] | Network & Space Systems [Member] | United Launch Alliance [Member]
Schedule of Equity Method Investments [Line Items]
Ownership Percentages	50.00%
Equity method investments	970		946
Commercial Airplanes, Network & Space Systems, and Global Services & Support [Member] | Other [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 194		$ 191

[1] Dividends received were $226 and $341 during 2013 and 2012. Retained earnings at December 31, 2013 include undistributed earnings from our equity method investments of $144.