Shareowners' Equity and Noncontrolling Interest (Reclass and Changes in Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012	Dec. 31, 2012
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	$ (6,000)			$ (6,000)			$ (5,448)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				(794)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				242
Income Tax Expense (Benefit)	645		453	1,063		773
Sales Revenue, Goods, Net	11,661		9,585	21,916		18,004
Other Income	421		340	730		640
Income from continuing operations	1,645		1,558	2,997		2,822
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	(100)			(100)			3
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				(120)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				17
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	3			4
Income from continuing operations	(15)			(21)
Net Income (Loss) Available to Common Stockholders, Basic	(12)			(17)
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 out of Accumulated Other Comprehensive Income [Line Items]
Sales Revenue, Goods, Net	(15)			(23)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Contract [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other Income	0			2
Accumulated Translation Adjustment [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	(172)			(172)			654
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				(794)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(32)
Accumulated Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other Income	36			32
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	(5,922)			(5,922)			(6,250)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				38
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				290
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	83			164
Other Comprehensive (Income) Loss Amortization Adjustment from AOCI Pension and Other Postretirement Benefit Plans for Net Prior Service Cost (Credit) and Net Transition Asset (Obligation), before Tax	12	[1]		24	[1]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	(239)	[1]		(478)	[1]
Income from continuing operations	(227)			(454)
Net Income (Loss) Available to Common Stockholders, Basic	(144)			(290)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive loss	194			194			145
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				82
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(33)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense (Benefit)	(11)			(21)
Other Income	27			54
Net Income (Loss) Available to Common Stockholders, Basic	$ 16			$ 33

[1] (1) These accumulated other comprehensive income components are included in the computation of net periodic pension cost (see Note 7 for additional details).