Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Net revenues	$ 6,550	$ 6,786		$ 18,985	$ 19,758
Amortization of intangibles	(19)	(18)		(54)	(53)
General corporate expenses	(78)	(135)		(192)	(255)
Operating income	3,112	2,951		9,101	8,827
Interest and other debt expense, net	271	266		832	869
Loss on early extinguishment of debt	0	0	$ 649	0	649
Net periodic benefit income, excluding service cost	(44)	(63)		(137)	(152)
(Income) losses from investments in equity securities	2,478	5,915		3,707	5,789
(Gain) loss on Cronos-related financial instruments	0	135		14	128
Earnings (losses) before income taxes	407	(3,302)		4,685	1,544
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,882	5,975		17,020	17,275
OCI	2,791	2,753		8,112	7,901
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	670	626		1,948	1,945
OCI	425	405		1,262	1,269
Wine Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	0	177		0	494
OCI	0	(24)		0	21
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	(2)	8		17	44
OCI	$ (7)	$ (30)		$ (27)	$ (56)