Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,600,000	0	0	0
Net income from continuing operations	$ 1,854	$ 1,415	$ 4,747	$ 4,237
Income from discontinued operations	0	17	0	21
Net income attributable to common shareowners	$ 1,854	$ 1,432	$ 4,747	$ 4,258
Basic weighted average number of shares outstanding	897,700,000	900,800,000	899,300,000	900,900,000
Stock awards and equity units	12,500,000	14,700,000	13,800,000	13,200,000
Diluted weighted average number of shares outstanding	910,200,000	915,500,000	913,100,000	914,100,000
Net income from continuing operations	$ 2.07	$ 1.57	$ 5.28	$ 4.70
Income from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	$ 0.00	$ 0.02	$ 0.00	$ 0.02
Net income attributable to common shareowners	$ 2.07	$ 1.59	$ 5.28	$ 4.73
Net income from continuing operations	$ 2.04	$ 1.55	$ 5.20	$ 4.64
Income from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	$ 0.00	$ 0.02	$ 0.00	$ 0.02
Net income attributable to common shareowners	$ 2.04	$ 1.57	$ 5.20	$ 4.66