Income Taxes (Significant Components Of Deferred Tax Assets Net Of Deferred Tax Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	$ (3,303)	[1]	$ 2,413	[1]
Valuation Allowance - Inventory and long-term contract methods of income recognition, fixed assets and other	20		27
Valuation Allowance - Net operating loss, credit and capital loss carryovers	105		94
Deferred tax asset for net operating loss and credit carryovers each year through December 31, 2033	295
Deferred tax asset for net operating loss and credit carryovers indefinitely	67
Deferred tax assets related to Accumulated other comprehensive loss	5,818		10,210
Retiree Health Care Accruals [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	2,458		2,867
Inventory And Long-Term Contract Methods Of Income Recognition, Fixed Assets And Other [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	(9,948)		(7,151)
Partnerships And Joint Ventures [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	(62)		(162)
Other Employee Benefits Accruals [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	1,773		1,427
In-Process Research And Development Related To Acquisitions [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	23		37
Net Operating Loss, Credit And Capital Loss Carryovers [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	362		307
Pension Asset [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	3,099		6,232
Customer And Commercial Financing [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	(990)		(1,078)
Unremitted Earnings Of Non-U.S. Subsidiaries [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	(44)		(49)
Other Net Unrealized Losses [Member]
Deferred Tax Assets, Net Of Deferred Tax Liabilities [Line Items]
Net deferred tax assets	$ 26		$ (17)

[1] Of the deferred tax asset for net operating loss and credit carryovers, $295 expires in years ending from December 31, 2014 through December 31, 2033 and $67 may be carried over indefinitely. Included in the net deferred tax (liabilities)/assets as of December 31, 2013 and 2012 are deferred tax assets in the amounts of $5,818 and $10,210 related to Accumulated other comprehensive loss.