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Contingencies (NPM Adjustment Disputes) (Details) $ in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 141 Months Ended
--- | --- | --- | --- | --- | --- | ---
Oct. 27, 2025 state | Dec. 31, 2024 state | Apr. 30, 2023 USD ($) | Nov. 30, 1998 state | Sep. 30, 2025 USD ($) | Dec. 31, 2024 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Sep. 30, 2025 USD ($) state | Sep. 30, 2024 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2025 USD ($)
Health Care Cost Recovery Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Litigation settlement | $ |  |  |  |  | $ 800 |  | $ 900 |  | $ 2,300 | $ 2,700 |  |
Number of states with settled litigation |  |  |  | 46 |  |  |  |  |  |  |  |
PM USA [Member] | Health Care Cost Recovery Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of states with settled litigation including New York, subsequent expansion |  | 39 |  |  |  |  |  |  |  |  |  |
Loss contingency, credits to offset payments | $ |  |  |  |  |  |  |  |  |  |  |  | $ 1,470
PM USA [Member] | Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, credits to offset payments | $ |  |  | $ 52 |  |  |  |  |  |  |  |  |
Loss contingency, number of states with concluded hearings |  |  |  |  |  |  |  |  | 10 |  |  |
Loss contingency, number of states not in compliance with escrow statues |  |  |  |  |  |  |  |  | 3 |  |  |
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of states not settled |  |  |  |  |  |  |  |  | 6 |  |  |
Litigation settlement interest expense (income) | $ |  |  |  |  |  |  |  | $ 35 |  |  |  |
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of states not settled | 6 |  |  |  |  |  |  |  |  |  |  |
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | Period One [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of states not settled |  |  |  |  |  |  |  |  | 5 |  |  |
Loss contingency, number of states not settled, arbitration period |  |  |  |  |  |  |  |  | 3 years |  |  |
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | Period One [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of states not settled, arbitration period | 3 years |  |  |  |  |  |  |  |  |  |  |
Number of states with settled litigation | 4 |  |  |  |  |  |  |  |  |  |  |
PM USA [Member] | Health Care Cost Recovery Actions, 2005-2007 NPM Adjustment [Member] | Pending Litigation [Member] | Period Two [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, number of states not settled |  |  |  |  |  |  |  |  | 1 |  |  |
Loss contingency, number of states not settled, arbitration period |  |  |  |  |  |  |  |  | 1 year |  |  |
New York [Member] | PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Litigation settlement | $ |  |  |  |  |  |  |  |  |  |  | $ 646 |
Massachusetts [Member] | PM USA [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency accrual, provision | $ |  |  |  |  |  | $ 28 |  |  |  |  |  |
Massachusetts [Member] | PM USA [Member] | Health Care Cost Recovery Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, credits to offset payments | $ |  |  |  |  |  |  |  |  | $ 28 |  |  |

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