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Investments in Equity Securities (Earnings in Equity Securities) (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |
(Income) losses from investments under equity method of accounting | $ (295) | $ (170)
(Income) losses from investments in equity securities | (295) | 80
ABI [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
(Income) losses from investments under equity method of accounting | (313) | (205)
Cronos [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
(Income) losses from investments under equity method of accounting | 18 | 35
JUUL [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Loss on disposition of JUUL equity securities | $ 0 | $ 250

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