v3.26.1
Related Parties - Equity Investments and Other: (Narrative) (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
May 31, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]            
Equity method investments   $ 1,008   $ 1,008   $ 1,019
Difference between equity method investment carrying value and book value   1,023   1,023   1,033
Dividends from unconsolidated subsidiaries       17   203
Value of financial guarantee (up to)   385   385    
Impairment related to equity securities   511 $ 0 511 $ 0  
Equity securities, unrealized loss       (308)    
Equity securities, unrealized loss, net       (240)    
Definite-Lived Intangibles And Other Assets            
Schedule of Equity Method Investments [Line Items]            
Difference between equity method investment carrying value and book value   161   161   161
Fair Value, Inputs, Level 1            
Schedule of Equity Method Investments [Line Items]            
Equity securities, noncurrent   $ 983   $ 983   1,291
PM India | Related Party            
Schedule of Equity Method Investments [Line Items]            
Parent ownership percentage   56.30%   56.30%    
TTI | PMM            
Schedule of Equity Method Investments [Line Items]            
Noncontrolling ownership percentage   33.00%   33.00%    
Megapolis Group            
Schedule of Equity Method Investments [Line Items]            
Ownership percentage   23.00%   23.00%    
Equity method investments, including cumulative foreign currency translation losses   $ 800   $ 800    
Cumulative foreign currency translation losses   $ 500   $ 500    
Société des Tabacs Algéro-Emiratie            
Schedule of Equity Method Investments [Line Items]            
Ownership percentage   25.00%   25.00%    
Equity method investments, including cumulative foreign currency translation losses   $ 700   $ 700    
Cumulative foreign currency translation losses   300   300    
RBH            
Schedule of Equity Method Investments [Line Items]            
Equity securities, financial projection period 5 years          
Impairment related to equity securities   511        
Equity securities   51   51   569
Equity securities, impairment loss and downward price adjustment, cumulative amount   $ 3,060   $ 3,060   $ 2,549
Eastern            
Schedule of Equity Method Investments [Line Items]            
Ownership percentage   14.70%   14.70%