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Contingencies (Public Civil Actions) (Details) - Public Civil Actions [Member] - Combustible Products [Member] - litigation_case
Apr. 24, 2020
Apr. 23, 2019
Apr. 24, 2018
Loss Contingencies [Line Items]      
Cases brought against PM   2 2
Subsequent Event [Member]      
Loss Contingencies [Line Items]      
Cases brought against PM 2    
Subsequent Event [Member] | Argentina [Member]      
Loss Contingencies [Line Items]      
Cases brought against PM 1    
Subsequent Event [Member] | Venezuela [Member]      
Loss Contingencies [Line Items]      
Cases brought against PM 1