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