Summary Of Significant Accounting Policies (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]
Duration of operating cycle	generally longer than one year
Amount recognized in operating earnings, change in accounting estimate	$ 242	$ 379	$ 229
Earnings Per Share impact, change in accounting estimate	$ 0.23	$ 0.33	$ 0.23
Reinsurance revenues	160	129	144
Reinsurance costs	147	128	142
Research and development expense	3,071	3,298	3,918
Negative cash balances reclassified to accounts payable	108	159
Repurchase commitments, maturities	generally 10 to 15 years
Commercial Airplanes [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty term	3 years
Commercial Airplanes [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty term	4 years
Defense, Space & Security [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty term	6 months
Defense, Space & Security [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Standard warranty term	12 months
Developed Technology [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	6 years
Developed Technology [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	14 years
Product Know-How [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	5 years
Product Know-How [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	30 years
Customer Base [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	5 years
Customer Base [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	19 years
Distribution Rights [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	3 years
Distribution Rights [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	30 years
Other Intangible Assets [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	5 years
Other Intangible Assets [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-lived acquired intangible assets, useful lives (in years)	32 years
Buildings And Land Improvements [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)	10 years
Buildings And Land Improvements [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)	40 years
Machinery And Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)	3 years
Machinery And Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)	20 years
Capitalized Internal Use Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful lives (in years)	5 years
Bid And Proposal Costs [Member]
Summary Of Significant Accounting Policies [Line Items]
Research and development expense	$ 285	$ 326	$ 332