Segment Reporting: (Property, Plant and Equipment and Other Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total long-lived assets	$ 11,230	$ 9,637	$ 9,685
Financial instruments	1,306	456	701
Total property, plant and equipment, net and Other assets	12,536	10,093	13,163
Europe
Segment Reporting Information [Line Items]
Total long-lived assets	6,619	5,540	5,697
SSEA, CIS & MEA
Segment Reporting Information [Line Items]
Total long-lived assets	2,209	2,160	2,197
East Asia and Australia
Segment Reporting Information [Line Items]
Total long-lived assets	405	378	481
Americas
Segment Reporting Information [Line Items]
Total long-lived assets	1,997	1,559	1,310
Altria Group
Segment Reporting Information [Line Items]
Altria Group, Inc. agreement	$ 0	$ 0	$ 2,777