Accounts Receivable (Schedule Of Accounts Receivable) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Accounts Receivables [Line Items]
Less valuation allowance, Current	$ (104)		$ (82)
Accounts receivable, Net, Current	6,546		5,608
U S Government Contracts [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current	3,604		2,788
Defense, Space & Security customers [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current	1,073	[1]	1,196	[1]
Commercial Airplanes customers [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current	1,072		903
Reinsurance Receivables [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current	525		509
Other [Member]
Accounts Receivables [Line Items]
Accounts Receivable, Gross, Current	$ 376		$ 294

[1] Excludes U.S. government contracts