Shareowners' Equity and Noncontrolling Interest (Summary of Changes in Shareowners' Equity and Noncontrolling Interest) (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
Equity, beginning of period	$ 33,695	$ 27,563	$ 33,219	$ 27,069
Net income	1,790	1,653	3,096	3,001
Total other comprehensive income (loss)	538	(138)	470	(578)
Total comprehensive income for the period	2,328	1,515	3,566	2,423
Common Stock issued under employee plans	125	201	290	452
Common Stock repurchased	(335)	(335)	(670)	(670)
Dividends on Common Stock	(512)	(465)	(1,026)	(930)
Dividends on ESOP Common Stock	(18)	(17)	(36)	(34)
Dividends attributable to noncontrolling interest	(44)	(71)	(100)	(127)
Purchase of subsidiary shares from noncontrolling interest	(43)	(19)	(46)	(29)
Sale of subsidiary shares in noncontrolling interest	3	5	31	242
Disposition noncontrolling interest	3	(5)	(3)	(5)
Redeemable Noncontrolling Interest in Subsidiaries Earning	(1)	(2)	(7)	(2)
Redeemable noncontrolling interest in other comprehensive income (loss)	(2)	2	0	6
Redeemable noncontrolling interest reclassification to noncontrolling interest	(6)	(3)	(31)	(26)
Equity, end of period	35,193	28,369	35,193	28,369
Redeemable noncontrolling interest, beginning of period	137	255	111	238
Redeemable noncontrolling interest, end of period	146	174	146	174
Net Income (Loss) Attributable to Parent	1,680	1,560	2,893	2,826
Increase in common stock for sale of subsidiary shares	0	0	4	0
Decrease in common stock for purchase of subsidiary shares	(10)	(18)	(13)	(19)
Change from net income attributable to common shareowners and transfers to noncontrolling interest	1,670	1,542	2,884	2,807
Shareowners' Equity [Member]
Equity, beginning of period	32,317	26,194	31,866	25,914
Net income	1,680	1,560	2,893	2,826
Total other comprehensive income (loss)	538	(133)	477	(552)
Total comprehensive income for the period	2,218	1,427	3,370	2,274
Common Stock issued under employee plans	125	201	290	452
Common Stock repurchased	(335)	(335)	(670)	(670)
Dividends on Common Stock	(512)	(465)	(1,026)	(930)
Dividends on ESOP Common Stock	(18)	(17)	(36)	(34)
Purchase of subsidiary shares from noncontrolling interest	(10)	(18)	(13)	(19)
Sale of subsidiary shares in noncontrolling interest	0	0	4	0
Equity, end of period	33,785	26,987	33,785	26,987
Noncontrolling Interest [Member]
Equity, beginning of period	1,378	1,369	1,353	1,155
Net income	110	93	203	175
Total other comprehensive income (loss)	0	(5)	(7)	(26)
Total comprehensive income for the period	110	88	196	149
Dividends attributable to noncontrolling interest	(44)	(71)	(100)	(127)
Purchase of subsidiary shares from noncontrolling interest	(33)	(1)	(33)	(10)
Sale of subsidiary shares in noncontrolling interest	3	5	27	242
Disposition noncontrolling interest	3	(5)	(3)	(5)
Redeemable Noncontrolling Interest in Subsidiaries Earning	(1)	(2)	(7)	(2)
Redeemable noncontrolling interest in other comprehensive income (loss)	(2)	2	0	6
Redeemable noncontrolling interest reclassification to noncontrolling interest	(6)	(3)	(31)	(26)
Equity, end of period	1,408	1,382	1,408	1,382
Redeemable Noncontrolling Interest [Member]
Net income	1	1	7	2
Dividends attributable to noncontrolling interest	0	0	(3)	(3)
Disposition noncontrolling interest	0	(82)	0	(82)
Redeemable noncontrolling interest reclassification to noncontrolling interest	6	2	31	25
Foreign currency translation, net	$ 2	$ (2)	$ 0	$ (6)