(Information By Geographic Area, Net Sales) (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
Segment Reporting Information [Line Items]
NET SALES		$ 5,239	$ 5,123	$ 4,866	$ 5,352	$ 5,498	$ 5,568	$ 5,667	$ 5,643	$ 20,580	[1]	$ 22,376	[1]	$ 23,306	[1]
United States
Segment Reporting Information [Line Items]
NET SALES	[1],[2]									16,147		16,948		17,609
EMEA
Segment Reporting Information [Line Items]
NET SALES	[1]									2,920		3,258		3,321
Pacific Rim and Asia
Segment Reporting Information [Line Items]
NET SALES	[1]									202		415		605
Americas, other than U.S.
Segment Reporting Information [Line Items]
NET SALES	[1]									$ 1,311		$ 1,755		$ 1,771

[1] Net sales are attributed to countries based on the location of the seller.

[2] Export sales to unaffiliated customers were $2.5 billion in 2020, $2.7 billion in 2019 and $3.1 billion in 2018.