Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income attributable to common shareowners:
Net income attributable to common shareowners	$ 1,148	$ 1,238	$ 4,394	$ 4,583
Basic weighted average number of shares outstanding	855.1	791.3	854.2	790.6
Stock awards and equity units	9.0	10.5	8.7	10.1
Diluted weighted average number of shares outstanding	864.1	801.8	862.9	800.7
Earnings Per Share of Common Stock - Basic:
Net income from continuing operations	$ 1.34	$ 1.56	$ 5.14	$ 5.80
Earnings Per Share of Common Stock - Diluted:
Net income from continuing operations	$ 1.33	$ 1.54	$ 5.09	$ 5.72
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8.0	5.0	11.0	5.2
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent			$ 4,394	$ 4,583