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Investments in Equity Securities (Investment in JUUL Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
JUUL [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Loss on disposition of JUUL equity securities | $ 0 | $ 250 | $ 100 | $ 250 | $ 1,355

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