Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income attributable to common shareowners:
Net income attributable to common shareowners	$ 1,900	$ 2,048	$ 3,246	$ 3,345
Basic weighted average number of shares outstanding	854.4	790.5	853.8	790.2
Stock awards and equity units	9.3	9.1	8.5	9.8
Diluted weighted average number of shares outstanding	863.7	799.6	862.3	800.0
Earnings Per Share of Common Stock - Basic:
Net income from continuing operations	$ 2.22	$ 2.59	$ 3.80	$ 4.23
Earnings Per Share of Common Stock - Diluted:
Net income from continuing operations	$ 2.20	$ 2.56	$ 3.76	$ 4.18
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	11.0	5.1	13.0	5.1
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent			$ 3,246	$ 3,345