Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0
Net income from continuing operations	$ 1,213	$ 1,270
Loss from discontinued operations	0	(4)
Net income attributable to common shareowners	$ 1,213	$ 1,266
Basic weighted average number of shares outstanding	900,900,000	901,300,000
Stock Awards	16,100,000	12,500,000
Diluted weighted average number of shares outstanding	917,000,000	913,800,000
Net income from continuing operations	$ 1.35	$ 1.41
Net income attributable to common shareowners	$ 1.35	$ 1.40
Net income from continuing operations	$ 1.32	$ 1.39
Net income attributable to common shareowners	$ 1.32	$ 1.39