Information about Geogrphic areas (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Segment Reporting Information
External sales and revenues	$ 13,144	$ 12,758	$ 14,432	$ 13,466	$ 14,342	$ 13,510	$ 14,011	$ 12,859	$ 53,800	$ 54,722	$ 45,462
Property, Plant and Equipment, Net	12,904				13,574				12,904	13,574		$ 13,548
Inside United States
Segment Reporting Information
External sales and revenues									22,806	22,690	18,552
Property, Plant and Equipment, Net	7,568				8,152				7,568	8,152
Outside the United States
Segment Reporting Information
External sales and revenues									30,994	32,032	$ 26,910
Property, Plant and Equipment, Net	$ 5,336				$ 5,422				$ 5,336	$ 5,422