Accounts Receivable (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014
Accounts Receivables [Line Items]
Less valuation allowance, Current		$ (94)	$ (127)
Accounts receivable, Net, Current		8,713	7,729
U S Government Contracts [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current		4,864	4,281
Commercial Airplanes Accounts Receivable [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current		2,250	1,749
Defense, Space & Security Customers Excluding US Government Contracts [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current	[1]	889	1,018
Reinsurance Receivables [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current		550	512
Other Account Receivable [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current		$ 254	$ 296

[1] Excludes U.S. government contracts