Shareowners' Equity (Reclass Out Of Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	$ 216	$ (13)	$ 18	$ (97)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,838	1,818	3,794	3,647
Costs and Expenses	(8,589)	(8,962)	(16,962)	(18,397)
Financial Services Revenue	10,213	10,885	20,701	22,327
Interest Expense	2,071	2,388	4,232	4,770
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	1,658	1,954	3,800	3,987
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(172)	159	(127)	(180)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Available-for-sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes	(11)	13
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Financial Services Revenue	(145)	170	(11)	137
Interest And Other Financial Charges	13	(6)	1	(18)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [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	(18)	14
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest Income (Expense), Net	60	92
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Exchange Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Financial Services Revenue	(144)	164
Securities Investment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other Income	34	(16)	17	(232)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(23)	3	(13)	125
Securities Investment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Available-for-sale Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Benefit (provision) for income taxes			(4)	107
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	0	112	124	79
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(4)	113	(6)	96
Costs and Expenses	(4)	1	(130)	17
Cash Flow Hedge [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			14	(56)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(186)	58	(125)	(131)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(204)	72	(139)	(75)
Cash Flow Hedge [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Exchange Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Financial Services Revenue			(10)	119
Cash Flow Hedge [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest Income (Expense), Net			(129)	(194)
Pension Plan, Defined Benefit [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	2	4	4	7
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(5)	(9)	(9)	(20)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	(7)	(13)	(13)	(27)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1)	0	(1)	0
Defined Benefit Plan, Amortization of Gains (Losses)	$ (6)	$ (13)	$ (12)	$ (27)