Segment Reporting (Long-Lived Assets By Segment) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Financial instruments	$ 210	$ 650	$ 314
Total property, plant and equipment, net and Other assets	8,717	9,132	8,602
Operating Segments
Segment Reporting Information [Line Items]
Long-lived assets	8,507	8,482	8,288
Operating Segments | European Union
Segment Reporting Information [Line Items]
Long-lived assets	4,504	4,500	4,275
Operating Segments | Eastern Europe
Segment Reporting Information [Line Items]
Long-lived assets	635	668	774
Operating Segments | Middle East & Africa
Segment Reporting Information [Line Items]
Long-lived assets	289	375	369
Operating Segments | South & Southeast Asia
Segment Reporting Information [Line Items]
Long-lived assets	1,386	1,348	1,361
Operating Segments | East Asia & Australia
Segment Reporting Information [Line Items]
Long-lived assets	740	807	829
Operating Segments | Americas
Segment Reporting Information [Line Items]
Long-lived assets	661	784	680
Operating Segments | Other
Segment Reporting Information [Line Items]
Long-lived assets	$ 292	$ 0	$ 0