Shareowners' Equity (Reclass Out Of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Reclass out of AOCI
Benefit (provision) for income taxes (Note 7)	$ (6,152)	$ (301)
Net earnings	91	11
Costs and Expenses	(12,283)	(7,880)
Financial Services Revenue	5,961	9,858
Interest Expense	1,651	1,887
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(6,301)	2,005
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclass out of AOCI
Net earnings	(827)	45
Financial Services Revenue	(944)	134
Interest And Other Financial Charges	(9)	0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Securities Investment [Member]
Reclass out of AOCI
Benefit (provision) for income taxes (Note 7)	(29)	7
Net earnings	54	(10)
Financial Services Revenue	83	(17)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Currency Translation Adjustment [Member]
Reclass out of AOCI
Benefit (provision) for income taxes (Note 7)	(1)	124
Net earnings	(3)	(2)
Costs and Expenses	(2)	(126)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclass out of AOCI
Benefit (provision) for income taxes (Note 7)	119	(4)
Net earnings	(873)	61
Financial Services Revenue	(953)	134
Interest And Other Financial Charges	(39)	(69)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(992)	65
Reclassification out of Accumulated Other Comprehensive Income [Member] | Benefit Plans Adj [Member]
Reclass out of AOCI
Benefit (provision) for income taxes (Note 7)	2	2
Net earnings	(5)	(4)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(7)	(6)
Defined Benefit Plan, Amortization of Gains (Losses)	(7)	(6)
Prior service cost amortization	$ 0	$ 0