Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net revenues	$ 6,281	$ 6,550	$ 18,508	$ 18,985
Amortization of intangibles	(42)	(19)	(87)	(54)	$ (73)
General corporate expenses	(63)	(78)	(551)	(192)
Operating income	3,089	3,112	8,751	9,101
Interest and other debt expense, net	272	271	758	832
Net periodic benefit income, excluding service cost	(33)	(44)	(95)	(137)
(Income) losses from investments in equity securities	(58)	2,478	(105)	3,707
Loss on Cronos-related financial instruments	0	0	0	14
Earnings before income taxes	2,908	407	8,193	4,685
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,572	5,882	16,482	17,020
OCI	2,743	2,791	8,092	8,112
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	685	670	1,993	1,948
OCI	455	425	1,314	1,262
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	24	(2)	33	17
OCI	$ (4)	$ (7)	$ (17)	$ (27)