Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Net revenues	$ 6,543	$ 6,936		$ 12,435	$ 12,972
Operating income	3,105	3,186		5,989	5,876
Interest and other debt expense, net	280	295		561	603
Loss on early extinguishment of debt	0	0	$ 649	0	649
Net periodic benefit income, excluding service cost	(47)	(46)		(93)	(89)
(Income) losses from equity investments	1,263	(75)		1,229	(126)
(Gain) loss on Cronos-related financial instruments	4	103		14	(7)
Earnings before income taxes	1,605	2,909		4,278	4,846
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,873	6,050		11,138	11,300
OCI	2,762	2,776		5,321	5,148
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	665	693		1,278	1,319
OCI	430	472		837	864
Wine Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	0	167		0	317
OCI	0	27		0	45
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	5	26		19	36
OCI	(15)	(12)		(20)	(26)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Amortization of intangibles	(18)	(18)		(35)	(35)
General corporate [Member]
Segment Reporting Information [Line Items]
General corporate expenses	$ (54)	$ (59)		$ (114)	$ (120)