Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Inventory	$ 51	$ 1
Accrued liabilities and allowances	135	134
Employee benefits	825	1,544
Capitalized items	179	254
Tax basis differences on investments	20	28
Depreciation tax basis differences on fixed assets	16	19
Undistributed non-U.S. earnings	(9)	(150)
Tax carryforwards	1,382	1,155
Business reorganization	39	12
Warranty and customer reserves	39	45
Deferred revenue and costs	263	310
Valuation allowances	(256)	(308)
Deferred charges	38	36
Other	(62)	(60)
Deferred tax assets (liabilities), total	$ 2,660	$ 3,020