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Financial Instruments (Narrative) (Details) $ in Millions	12 Months Ended
Financial Instruments (Narrative) (Details) $ in Millions	Dec. 31, 2025 USD ($) contract	Dec. 31, 2024 USD ($) contract	Dec. 31, 2023 USD ($)	Jun. 01, 2023 USD ($)
Derivative [Line Items]
Number of foreign currency derivatives held \| contract	0	0
NJOY Holdings, Inc. [Member]
Derivative [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high				$ 500
NJOY Holdings, Inc. [Member] \| Menthol Pod [Member]
Derivative [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high				250
NJOY Holdings, Inc. [Member] \| Blueberry Pod [Member]
Derivative [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high				125
NJOY Holdings, Inc. [Member] \| Watermelon Pod [Member]
Derivative [Line Items]
Business combination, contingent consideration arrangements, range of outcomes, value, high				$ 125
ABI [Member]
Derivative [Line Items]
Net investment hedge, gain (loss), reclassification, before tax		$ 42
Foreign Currency Denominated Debt [Member] \| Net Investment Hedging [Member]
Derivative [Line Items]
(Gains) losses of our net investment hedges	$ 393	$ (205)	$ 108