Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	6,100,000	0	4,800,000
Net income from continuing operations	$ 1,415	$ 1,247	$ 4,237	$ 3,902
Net income (loss) from discontinued operations	17	168	21	(829)
Net income attributable to common shareowners	$ 1,432	$ 1,415	$ 4,258	$ 3,073
Basic weighted average number of shares outstanding	900,800,000	896,300,000	900,900,000	893,600,000
Stock Awards	14,700,000	10,900,000	13,200,000	11,700,000
Diluted weighted average number of shares outstanding	915,500,000	907,200,000	914,100,000	905,300,000
Net income from continuing operations	$ 1.57	$ 1.39	$ 4.70	$ 4.37
Net income (loss) from discontinued operations	$ 0.02	$ 0.19	$ 0.02	$ (0.93)
Net income attributable to common shareowners	$ 1.59	$ 1.58	$ 4.73	$ 3.44
Net income from continuing operations	$ 1.55	$ 1.37	$ 4.64	$ 4.31
Net income (loss) from discontinued operations	$ 0.02	$ 0.19	$ 0.02	$ (0.92)
Net income attributable to common shareowners	$ 1.57	$ 1.56	$ 4.66	$ 3.39