Shareowners' Equity (Changes In Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance			$ 0
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	$ (134)
Other comprehensive income, net of tax	(134)	$ 459	(1,764)	$ 909
Less: Other comprehensive income (loss) attributable to noncontrolling interests	9	3	(23)	5
Accumulated Other Comprehensive Income (Loss) Ending balance	(2,318)	(130)	(2,318)	(130)
Securities Investment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	1,207	793	1,010	309
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	(651)	322	(400)	796
OCI before reclassification tax	(343)	221	(206)	472
Reclassification from OCI net of deferred taxes	1	(23)	(53)	(13)
Reclassification from OCI Tax	(2)	(11)	(31)	(4)
Other comprehensive income, net of tax	(650)	299	(453)	783
Less: Other comprehensive income (loss) attributable to noncontrolling interests	(1)	0	(1)	0
Accumulated Other Comprehensive Income (Loss) Ending balance	558	1,092	558	1,092
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	(2,653)	(773)	(838)	(687)
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	213	116	(1,637)	30
OCI before reclassification tax	(201)	32	1,338	105
Reclassification from OCI net of deferred taxes	304	4	307	6
Reclassification from OCI Tax	(150)	0	(151)	124
Other comprehensive income, net of tax	517	120	(1,330)	36
Less: Other comprehensive income (loss) attributable to noncontrolling interests	10	3	(22)	5
Accumulated Other Comprehensive Income (Loss) Ending balance	(2,146)	(656)	(2,146)	(656)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	(162)	(225)	(172)	(293)
Other comprehensive income (OCI) before reclassifications - net of deferred taxes	347	(156)	(516)	(27)
OCI before reclassification tax	54	(32)	(5)	37
Reclassification from OCI net of deferred taxes	(341)	186	532	125
Reclassification from OCI Tax	(65)	18	54	14
Other comprehensive income, net of tax	6	30	16	98
Less: Other comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Accumulated Other Comprehensive Income (Loss) Ending balance	(156)	(195)	(156)	(195)
Benefit Plans Adj [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	(567)	(381)	(577)	(363)
Other comprehensive income, net of tax	(7)	10	3	(8)
Less: Other comprehensive income (loss) attributable to noncontrolling interests	0	0	0	0
Net acturial gain (loss) net of deferred taxes	(9)	5	(4)	(17)
Net actuarial gain loss - deferred tax	2	2	(1)	(6)
Prior service cost amortization - net of deferred taxes	(1)	1	(1)	1
Prior service cost amortization - deferred tax	0	0	0	0
Net actuarial loss amortization net of tax	3	4	8	8
Net actuarial loss amortization - deferred tax	2	2	4	4
Accumulated Other Comprehensive Income (Loss) Ending balance	$ (574)	$ (371)	$ (574)	$ (371)