Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income attributable to common shareowners:
Income (loss) from continuing operations attributable to common shareowners	$ (3,844)	$ 1,183	$ (3,406)	$ 1,895
Income (loss) from discontinued operations attributable to common shareowners	9	717	(512)	1,351
Net income attributable to common shareowners	$ (3,835)	$ 1,900	$ (3,918)	$ 3,246
Basic weighted average number of shares outstanding	1,501.3	854.4	1,225.4	853.8
Stock awards and equity units	0.0	9.3	0.0	8.5
Diluted weighted average number of shares outstanding	1,501.3	863.7	1,225.4	862.3
Earnings Per Share of Common Stock - Basic:
Income (loss) from continuing operations attributable to common shareowners	$ (2.56)	$ 1.38	$ (2.78)	$ 2.22
Income (loss) from discontinued operations	0.01	0.84	(0.42)	1.58
Earnings Per Share, Basic	(2.55)	2.22	(3.20)	3.80
Earnings Per Share of Common Stock - Diluted:
Income (loss) from continuing operations attributable to common shareowners	(2.56)	1.37	(2.78)	2.20
Income (loss) from discontinued operations	0.01	0.83	(0.42)	1.56
Earnings Per Share, Diluted	$ (2.55)	$ 2.20	$ (3.20)	$ 3.76
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	36.6	11.0	53.3	13.0