Shareowners' Equity (Reclass Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	[1]	$ 48	$ 15	$ 6,164	$ (109)
Net earnings (loss)	[1]	470	1,604	(17,459)	5,398
Costs and Expenses	[1]	(5,542)	(5,501)	(18,415)	(16,004)
Financial Services Revenue	[1]	6,290	6,356	17,388	19,134
Interest expense	[1]	1,151	1,061	3,096	3,184
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	[1]	769	883	(963)	3,219
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net earnings (loss)		(813)	(375)	(1,606)	(502)
Investment Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		(20)	(15)	(50)	(19)
Net earnings (loss)		23	19	76	32
Financial Services Revenue		42	34	126	51
Investment Securities [Member] | Discontinued operations [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		(15)	(15)	(21)	(13)
Financial Services Revenue		28	40	45	34
Currency Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		(628)	1	(779)	124
Currency Translation Adjustment [Member] | Discontinued operations [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		(628)	0	(764)	123
Costs and Expenses		(104)	1	(102)	(128)
Currency Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		(628)	1	(779)	124
Net earnings (loss)		(732)	14	(1,039)	8
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		14	27	69	40
Interest And Other Financial Charges		(75)	(377)	(600)	(387)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest Income (Expense), Net		(39)	(53)	(100)	(182)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Foreign Exchange Contract
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest Income (Expense), Net		(28)	(20)	(13)	(19)
Financial Services Revenue		(47)	(357)	(587)	(368)
Benefit Plans Adj [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes		(1)	(2)	(5)	(6)
Net earnings (loss)		(4)	(4)	(12)	(13)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest		(5)	(6)	(17)	(19)
Defined Benefit Plan, Amortization of Gains (Losses)		(5)	(6)	(18)	(18)
Prior service cost amortization		$ 0	$ 0	$ 1	$ (1)

[1] Amounts may not add due to rounding.