Contingencies (Smoking and Health Litigation) (Details)	1 Months Ended
	Apr. 30, 2004 BRL (R$)	Apr. 30, 2004 USD ($)	Oct. 23, 2020 litigation_case	Oct. 22, 2019 litigation_case	Oct. 23, 2018 litigation_case
Individual Smoking And Health Cases [Member] | Combustible Products [Member]
Loss Contingencies [Line Items]
Cases brought against PM				49	63
Smoking And Health Class Actions [Member] | Brazil [Member] | The Smoker Health Defense Association (ADESF) [Member]
Loss Contingencies [Line Items]
Smoking and health loss contingency interest rate	1.00%	1.00%
Smoking And Health Class Actions [Member] | Brazil [Member] | Award per smoker per year [Member] | The Smoker Health Defense Association (ADESF) [Member]
Loss Contingencies [Line Items]
Damages awarded	R$ 1,000	$ 179
Smoking And Health Class Actions [Member] | Combustible Products [Member]
Loss Contingencies [Line Items]
Cases brought against PM				10	10
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member]
Loss Contingencies [Line Items]
Cases brought against PM			43
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Argentina [Member]
Loss Contingencies [Line Items]
Cases brought against PM			31
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Brazil [Member]
Loss Contingencies [Line Items]
Cases brought against PM			3
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Canada [Member]
Loss Contingencies [Line Items]
Cases brought against PM			2
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Chile [Member]
Loss Contingencies [Line Items]
Cases brought against PM			3
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Italy [Member]
Loss Contingencies [Line Items]
Cases brought against PM			1
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Philippines [Member]
Loss Contingencies [Line Items]
Cases brought against PM			1
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Turkey [Member]
Loss Contingencies [Line Items]
Cases brought against PM			1
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | Combustible Products [Member] | Scotland [Member]
Loss Contingencies [Line Items]
Cases brought against PM			1
Subsequent Event [Member] | Smoking And Health Class Actions [Member] | Combustible Products [Member]
Loss Contingencies [Line Items]
Cases brought against PM			9