Income Taxes (Schedule of Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred income tax assets:
Accrued postretirement and postemployment benefits	$ 270	$ 302
Settlement charges	585	644
IQOS deferred gain	0	691
Research and development costs	112	86
Net operating losses and tax credit carryforwards	224	217
Other	0	39
Total deferred income tax assets	1,802	4,404
Deferred income tax liabilities:
Property, plant and equipment	(235)	(237)
Intangible assets	(3,032)	(3,210)
Investment in ABI	(1,370)	(1,391)
Accrued pension costs	(108)	(81)
Other	(133)	0
Total deferred income tax liabilities	(4,878)	(4,919)
Valuation allowances	(668)	(2,256)	$ (2,800)	$ (3,097)
Net deferred income tax liabilities	(3,744)	(2,771)
JUUL [Member]
Deferred income tax assets:
JUUL-related losses	207	2,028
Deferred income tax liabilities:
Valuation allowances	(207)		(2,394)
Cronos Group Inc. [Member]
Deferred income tax assets:
Investment in Cronos	404	397
Deferred income tax liabilities:
Valuation allowances	$ (402)	$ (397)	$ (379)