Shareowners' Equity (Reclass Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	$ (479)	$ (799)	$ (340)	$ (7,093)
Net earnings (loss)	2,804	(1,134)	2,874	(14,743)
Costs and Expenses	(29,670)	(26,614)	(57,276)	(51,233)
Financial Services Revenue	2,316	2,390	4,838	4,804
Interest and other financial charges	(1,326)	(713)	(3,062)	(1,331)
Earnings (loss) from continuing operations before income taxes	3,824	2,612	4,063	4,233
Earnings (loss) from discontinued operations, net of taxes	(541)	(2,947)	(849)	(11,883)
Currency Translation Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	(39)	(150)	80	(151)
Net earnings (loss)	(29)	(304)	85	(307)
Gain (loss) on disposition of business	10	(154)	5	(156)
Currency Translation Adjustment | Discontinued Operations [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	(39)	(137)	80	(137)
Gain (loss) on disposition of business	77	4	71	4
Cash Flow Hedge
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	(4)	(68)	1	49
Net earnings (loss)	10	347	(69)	(533)
Earnings (loss) from continuing operations before income taxes	14	415	(71)	(582)
Cash Flow Hedge | Interest Rate Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and other financial charges	(26)	(22)	(55)	(61)
Cash Flow Hedge | Currency Exchange Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest and other financial charges	37	430	(5)	(528)
Cash Flow Hedge | Currency Exchange Contracts | Discontinued Operations [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest Income (Expense), Net	(17)	26	(36)	12
Financial Services Revenue	53	404	31	(540)
Cash Flow Hedge | Other Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Costs and Expenses	2	7	(11)	7
Pension Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	237	268	474	636
Net earnings (loss)	(463)	(512)	(922)	(1,211)
Curtailment gain (loss)	1	196	1	121
Defined Benefit Plan, Amortization of Gains (Losses)	(664)	(887)	(1,323)	(1,792)
Prior service cost amortization	(37)	(89)	(74)	(176)
Earnings (loss) from continuing operations before income taxes	(700)	(780)	(1,396)	(1,847)
Reclassification out of AOCI
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net earnings (loss)	(461)	(479)	(946)	(2,007)
Reclassification out of AOCI | Available-for-sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Income	30	(13)	(70)	70
Benefit (provision) for income taxes	(9)	3	31	(26)
Net earnings (loss)	21	(10)	(39)	44
Reclassification out of AOCI | Available-for-sale Securities | Discontinued Operations [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Income	6	15	(72)	17
Benefit (provision) for income taxes	$ (1)	$ (7)	$ 31	$ (6)