Quarterly Operating Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Selected Quarterly Financial Information [Abstract]
Net sales	$ 16,419	$ 14,747	$ 14,061	$ 11,360	$ 11,694	$ 11,373	$ 11,329	$ 10,953	$ 56,587	$ 45,349	$ 34,701
Gross margin	2,153	1,743	1,847	2,788	2,578	2,864	2,775	2,534
Income (loss) from continuing operations	146	151	(3,844)	438	657	958	1,183	712	(3,109)	3,510	1,216
Income (loss) from discontinued operations attributable to common shareowners	(11)	113	9	(521)	486	190	717	634	(410)	2,027	4,053
Net income (loss) attributable to common shareowners	$ 135	$ 264	$ (3,835)	$ (83)	$ 1,143	$ 1,148	$ 1,900	$ 1,346	$ (3,519)	$ 5,537	$ 5,269
Earnings Per Share of Common Stock - Basic and Diluted:
Income (loss) from continuing operations attributable to common shareowners	$ 0.10	$ 0.10	$ (2.56)	$ 0.51	$ 0.77	$ 1.12	$ 1.38	$ 0.84	$ (2.29)	$ 4.11	$ 1.52
Income (loss) from discontinued operations	(0.01)	0.08	0.01	(0.61)	0.56	0.22	0.84	0.74	(0.30)	2.37	5.06
Net income (loss) attributable to common shareowners	0.09	0.17	(2.55)	(0.10)	1.33	1.34	2.22	1.58	(2.59)	6.48	6.58
Income (loss) from continuing operations attributable to common shareowners	0.10	0.10	(2.56)	0.50	0.76	1.11	1.37	0.83	(2.29)	4.06	1.50
Income (loss) from discontinued operations	(0.01)	0.08	0.01	(0.60)	0.56	0.22	0.83	0.73	(0.30)	2.35	5.00
Net income (loss) attributable to common shareowners	$ 0.09	$ 0.17	$ (2.55)	$ (0.10)	$ 1.32	$ 1.33	$ 2.20	$ 1.56	$ (2.59)	$ 6.41	$ 6.50