Shareowners' Equity (Changes In Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Stockholders Equity Note [Line Items]
Investment Securities Beginning Balance	$ 307	[1]	$ 677
Investment Securities Balance at March 31	764	[1]	744
Currency Translation Adjustment Beginning Balance	126	[1]	412
Currency Translation Adjustment Balance March 31	177	[1]	(43)
Cash Flow Hedges Beginning Balance	(257)	[1]	(722)
Cash Flow Hedges Balance March 31	(189)	[1]	(620)
Benefit Plans Beginning Balance	(9,296)	[1]	(20,597)
Benefit Plans Balance March 31	(8,601)	[1]	(19,745)
Other comprehensive income, net of tax	1,269		564
Less: Other comprehensive income (loss) attributable to noncontrolling interests	(2)		(2)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(7,849)		(19,664)	(9,120)
Securities Investment [Member]
Stockholders Equity Note [Line Items]
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	447		(63)
Reclassification from OCI net of deferred taxes	10		131
Other comprehensive income, net of tax	457		68
Less: Other comprehensive income (loss) attributable to noncontrolling interests	0		1
Stockholders Equity Note Parenthetical
OCI before reclassification tax	246		(38)
Reclassification from OCI	7		97
Currency Translation Adjustment [Member]
Stockholders Equity Note [Line Items]
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	47		(471)
Other comprehensive income, net of tax	49		(459)
Less: Other comprehensive income (loss) attributable to noncontrolling interests	(2)		(4)
Stockholders Equity Note Parenthetical
OCI before reclassification tax	71		(204)
Tax on Reclassification from OCI - Currency Translation Adjustment	124		(34)
Reclassification from OCI net of deferred taxes - Currency Translation Adjustment	2		12
Cash Flow Hedge [Member]
Stockholders Equity Note [Line Items]
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	99		(76)
Other comprehensive income, net of tax	68		102
Less: Other comprehensive income (loss) attributable to noncontrolling interests	0		0
Stockholders Equity Note Parenthetical
OCI before reclassification tax	71		72
Reclassification from OCI net of deferred taxes - Cash Flow Hedge	(31)		178
Tax on Reclassification from OCI - Cash Flow Hedges	(6)		(47)
Pension Plan, Defined Benefit [Member]
Stockholders Equity Note [Line Items]
Other comprehensive income, net of tax	695		853
Less: Other comprehensive income (loss) attributable to noncontrolling interests	0		1
Stockholders Equity Note Parenthetical
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Net of Tax	(93)		(98)
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Tax	64		67
Other Comprehensive Income Net Amortization Of Net Actuarial Gain Loss	430		672
Other Comprehensive Income Net Amortization Of Net Actuarial Gain Loss Tax	213		339
Other Comprehensive Income Net Actuarial Gain Loss	172		83
Other Comprehensive Income Net Actuarial Gain Loss Tax	$ 42		$ 53

[1] The sum of accumulated other comprehensive income (loss) (AOCI) attributable to the Company was $(7,849) million and $(9,120) million at March 31, 2014 and December 31, 2013, respectively.