Financial Information By Business Segment And Geographic Area (Information By Geographic Area, Net Sales Footnotes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Segment Information, Previously Divested Businesses	$ 44	$ 56	$ 161
Segment Information, Previously Divested Businesses, Operating Profit	9	1	25
Segments Information, Previously Divested Businesses, Special Items Expense	0	0	159
Segments Information, Previously Divested Businesses, Capital Spending	0	0	4
Segments Information, Previously Divested Businesses, Depreciation	0	0	7
Segment Information, Previously Divested Business, External Sales by Segment	44	56	161
United States
Segment Reporting Information [Line Items]
Segment reporting information, unaffiliated revenue	$ 2,600	$ 2,400	$ 2,600