Segment Reporting (Segment Data Schedule) (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net revenues	$ 6,359	$ 5,628
Operating income	2,336	2,238
Corporate asset impairment and exit costs		(52)
Interest and other debt expense, net	(275)	(384)
Net periodic benefit income, excluding service cost	27	1
Earnings from equity investments	157	86
Loss on Cronos-related financial instruments	(137)	(425)
Earnings (losses) before income taxes and equity earnings of subsidiaries	2,108	1,516
Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	5,606	4,935
Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	601	540
Wine Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	146	151
All Other [Member]
Segment Reporting Information [Line Items]
Net revenues	6	2
Operating Segments [Member] \| Smokeable Products Segment [Member]
Segment Reporting Information [Line Items]
Operating income	2,370	1,932
Operating Segments [Member] \| Oral Tobacco Segment [Member]
Segment Reporting Information [Line Items]
Operating income	414	358
Operating Segments [Member] \| Wine Segment [Member]
Segment Reporting Information [Line Items]
Operating income	(379)	15
Operating Segments [Member] \| All Other [Member]
Segment Reporting Information [Line Items]
Operating income	(5)	(12)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Amortization of intangibles	(19)	(8)
General corporate [Member]
Segment Reporting Information [Line Items]
General corporate expenses	(45)	(46)
Corporate asset impairment and exit costs	$ 0	$ (1)

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