Shareowners' Equity and Noncontrolling Interest (Summary of Changes in Shareowners' Equity and Noncontrolling Interest) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Shareowners' Equity, beginning of period	$ 28,353	$ 28,650	$ 27,358	$ 31,213
Noncontrolling interest, beginning of period	1,550	1,517	1,486	1,351
Total Equity, beginning of period	29,903	30,167	28,844	32,564
Net income, Shareowners' Equity	1,373	1,542	2,564	2,968
Net Income, Noncontrolling Interest	(99)	(110)	(180)	(182)
Net income, Total Equity	1,472	1,652	2,744	3,150
Total other comprehensive (loss) income, Shareowners' Equity	(140)	634	135	84
Total other comprehensive (loss) income, Noncontrolling Interest	2	0	(11)	40
Other Comprehensive Income (Loss), Net of Tax	(142)	634	146	44
Total comprehensive income for the period, Shareowners' Equity	1,233	2,176	2,699	3,052
Total comprehensive income for the period, Noncontrolling Interest	97	110	191	142
Total comprehensive income for the period, Total Equity	1,330	2,286	2,890	3,194
Common Stock issued under employee plans	93	112	144	237
Common Stock repurchased	36	0	36	3,000
Dividends on Common Stock	526	543	1,035	1,096
Dividends on ESOP Common Stock	19	18	37	37
Dividends attributable to noncontrolling interest	90	61	141	116
Purchase of subsidiary shares from noncontrolling interest	6	4	7	(21)
Acquisition of noncontrolling interest	0	1	34	173
Disposition of noncontrolling interest			0	3
Other	1	2	8	(1)
Shareowners' Equity, end of period	29,090	30,377	29,090	30,377
Noncontrolling interest, end of period	1,558	1,561	1,558	1,561
Total Equity, end of period	30,648	31,938	30,648	31,938
Shareowners' Equity [Member]
Purchase of subsidiary shares from noncontrolling interest	6	0	6	(11)
Other	2	0	(3)	3
Noncontrolling Interest [Member]
Purchase of subsidiary shares from noncontrolling interest	0	4	1	(10)
Other	$ (1)	$ 2	$ 11	$ (4)