Business Segment Data (Liabilities) (Details) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Liabilities	$ 68,102	$ 65,703
Commercial Airplanes [Member]
Liabilities	19,995	19,663
Boeing Military Aircraft [Member]
Liabilities	3,858	4,028
Network & Space Systems [Member]
Liabilities	1,085	953
Global Services & Support [Member]
Liabilities	1,533	1,579
Total Boeing Defense, Space & Security [Member]
Liabilities	6,476	6,560
Other Segment [Member]
Liabilities	885	937
Unallocated Items And Eliminations [Member]
Liabilities	37,004	34,682
Boeing Capital Corporation [Member]
Liabilities	$ 3,742	$ 3,861