v3.25.2
Background and Basis of Presentation (Narrative) (Details) - USD ($)
shares in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Jan. 31, 2025
Jan. 31, 2024
Equity, Class of Treasury Stock [Line Items]              
Aggregate cost of shares repurchased $ 274,000,000 $ 10,000,000   $ 600,000,000 $ 2,410,000,000    
Horizon [Member] | PM USA [Member]              
Equity, Class of Treasury Stock [Line Items]              
Ownership percentage in consolidated subsidiary 75.00%     75.00%      
Horizon [Member] | JTIUH [Member]              
Equity, Class of Treasury Stock [Line Items]              
Noncontrolling interest, ownership percentage by noncontrolling owners 25.00%     25.00%      
January 2025 Share Repurchase Program [Member]              
Equity, Class of Treasury Stock [Line Items]              
Planned share repurchase program           $ 1,000,000,000.0  
Stock repurchase program, remaining authorized repurchase amount $ 400,000,000     $ 400,000,000      
Repurchase of common stock (shares) 4.7     10.4      
Aggregate cost of shares repurchased $ 274,000,000     $ 600,000,000      
January 2024 Share Repurchase Program [Member]              
Equity, Class of Treasury Stock [Line Items]              
Planned share repurchase program     $ 3,400,000,000       $ 1,000,000,000
Repurchase of common stock (shares)   7.6     54.1    
Aggregate cost of shares repurchased   $ 370,000,000     $ 2,410,000,000    
ASR Agreements [Member]              
Equity, Class of Treasury Stock [Line Items]              
Planned share repurchase program     $ 2,400,000,000        
Repurchase of common stock (shares)   7.4 46.5   53.9    
Accelerated share repurchases, percentage of stock received     85.00%        
Aggregate cost of shares repurchased     $ 2,040,000,000