Contingencies (Other Smoking and Health Class Actions) (Details) $ in Millions, $ in Billions	1 Months Ended				3 Months Ended	353 Months Ended
	Aug. 31, 2025 CAD ($)	Sep. 30, 2024 USD ($)	Jul. 31, 2024 claim	Mar. 31, 2019 CAD ($) manufacturer ruling	Jun. 30, 2024 USD ($)	Sep. 30, 2025 case manufacturer	Oct. 27, 2025 claim
Smoking and Health Class Actions and Aggregated Claims Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim							1
PM USA [Member]
Loss Contingencies [Line Items]
Payments for legal settlements | $		$ 7
PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						61
Arkansas [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
California [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Delaware [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
District of Columbia [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						2
Florida [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						2
Illinois [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						3
Iowa [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Kansas [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Louisiana [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Maryland [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Michigan [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Minnesota [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Nevada [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						29
New Jersey [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						6
New York [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						2
Ohio [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Oklahoma [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Oregon [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Pennsylvania [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Puerto Rico [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
South Carolina [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Texas [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Wisconsin [Member] | PM USA [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Class not certified						1
Canada [Member] | Philip Morris USA and Altria Group [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim							7
Canada [Member] | Canadian Tobacco Manufacturers [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of manufacturers | manufacturer				3		3
Number of verdicts upheld | ruling				2
Litigation settlement | $				$ 13.0
Payments for legal settlements | $	$ 32.5
Canada [Member] | Altria Group [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of manufacturers | manufacturer				0
British Columbia and Saskatchewan [Member] | Philip Morris USA and Altria Group [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim							2
UNITED STATES | Philip Morris USA and Altria Group [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of lawsuits resolved | claim			627
Pre-tax provision | $					$ 4
UNITED STATES | Philip Morris USA and Altria Group [Member] | Smoking and Health Class Actions and Aggregated Claims Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending | claim							1