Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	6,200,000	0	0
Net income from continuing operations	$ 1,552	$ 1,466	$ 2,822	$ 2,655
Net income (loss) from discontinued operations	8	(138)	4	(997)
Net income attributable to common shareowners	$ 1,560	$ 1,328	$ 2,826	$ 1,658
Basic weighted average number of shares outstanding	901,100,000	893,400,000	901,000,000	892,100,000
Stock Awards	13,000,000	11,400,000	12,800,000	12,100,000
Diluted weighted average number of shares outstanding	914,100,000	904,800,000	913,800,000	904,200,000
Net income from continuing operations	$ 1.72	$ 1.64	$ 3.13	$ 2.98
Net income (loss) from discontinued operations	$ 0.01	$ (0.16)	$ 0.01	$ (1.12)
Net income attributable to common shareowners	$ 1.73	$ 1.49	$ 3.14	$ 1.86
Net income from continuing operations	$ 1.70	$ 1.62	$ 3.09	$ 2.94
Net income (loss) from discontinued operations	$ 0.01	$ (0.15)	$ 0.01	$ (1.10)
Net income attributable to common shareowners	$ 1.71	$ 1.47	$ 3.09	$ 1.83