Segment Financial Data (Geographic External Sales by Origin and Long-Lived Assets) (Details) - USD ($) $ 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
Net sales	$ 16,419	$ 14,747	$ 14,061	$ 11,360	$ 11,694	$ 11,373	$ 11,329	$ 10,953	$ 56,587	$ 45,349	$ 34,701
Long-Lived Assets	14,962				10,322				14,962	10,322
UNITED STATES
Net sales									34,560	21,397	15,666
Long-Lived Assets	11,560				7,048				11,560	7,048
UNITED STATES | Sales by origin
Net sales									48,560	35,125	26,646
Europe [Member]
Net sales									8,856	11,378	9,531
Long-Lived Assets	1,371				1,268				1,371	1,268
Europe [Member] | Sales by origin
Net sales									3,696	4,419	3,092
Asia Pacific [Member]
Net sales									7,644	7,935	6,637
Long-Lived Assets	893				917				893	917
Asia Pacific [Member] | Sales by origin
Net sales									1,574	1,989	1,645
Middle East And North Africa
Net sales									3,443	1,530	882
Long-Lived Assets	137				132				137	132
Middle East And North Africa | Sales by origin
Net sales									103	203	226
Other Geographic Regions [Member]
Net sales									2,084	3,109	1,985
Long-Lived Assets	$ 1,001				$ 957				1,001	957
Other Geographic Regions [Member] | Sales by origin
Net sales									$ 2,654	$ 3,613	$ 3,092