v3.26.1
Financing arrangements - Narrative (Details)
€ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2026
EUR (€)
Jun. 30, 2025
USD ($)
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Debt Instrument [Line Items]              
Principal amount           $ 4,000,000,000.0  
Repayments of debt     $ 833,000,000   $ 3,500,000,000    
Payments for extinguishment of debt   $ 301,000,000 233,000,000   602,000,000    
Gain on extinguishment of debt   117,000,000 90,000,000   228,000,000    
Syndicated, unsecured revolving credit facility capacity           $ 4,000,000,000.0  
Amounts outstanding $ 0   $ 0       $ 0
Notes              
Debt Instrument [Line Items]              
Repayments of debt $ 0 1,000,000,000.0     3,500,000,000    
4.563% notes due 2048 (4.563% 2048 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.563%   4.563%        
Effective interest rate 6.30%   6.30%        
4.663% notes due 2051 (4.663% 2051 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.663%   4.663%        
Effective interest rate 5.60%   5.60%        
2.77% notes due 2053 (2.77% 2053 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 2.77%   2.77%        
Effective interest rate 5.20%   5.20%        
Term Loan | Notes              
Debt Instrument [Line Items]              
Basis spread on variable rate     1.225% 1.225%      
4.20% notes due 2031 (4.20% 2031 Notes)              
Debt Instrument [Line Items]              
Interest rate, stated percentage           4.20%  
Principal amount           $ 1,000,000,000.0  
4.20% notes due 2031 (4.20% 2031 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.20%   4.20%        
4.85% notes due 2036 (4.85% 2036 Notes)              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.85%   4.85%     4.85%  
Principal amount           $ 1,750,000,000  
4.85% notes due 2036 (4.85% 2036 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.85%   4.85%        
5.50% notes due 2046 (5.50% 2046 Notes)              
Debt Instrument [Line Items]              
Interest rate, stated percentage           5.50%  
Principal amount           $ 500,000,000  
5.50% notes due 2046 (5.50% 2046 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 5.50%   5.50%        
5.65% notes due 2056 (5.65% 2056 Notes)              
Debt Instrument [Line Items]              
Interest rate, stated percentage           5.65%  
Principal amount           $ 750,000,000  
5.65% notes due 2056 (5.65% 2056 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 5.65%   5.65%        
2.00% Note Due 2026 | Cross-currency swap contracts | Cash flow hedge              
Debt Instrument [Line Items]              
Notional amounts $ 833,000,000   $ 833,000,000        
2.00% Note Due 2026 | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 2.00%   2.00%        
Repayments of debt | €       € 750      
Various Long-Term Notes | Notes              
Debt Instrument [Line Items]              
Extinguishment of debt, amount $ 0 $ 418,000,000 $ 324,000,000   $ 832,000,000    
2.80% notes due 2041 (2.80% 2041 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 2.80% 2.80% 2.80%   2.80%    
3.375% notes due 2050 (3.375% 2050 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 3.375% 3.375% 3.375%   3.375%    
3.00% notes due 2052 (3.00% 2052 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 3.00% 3.00% 3.00%   3.00%    
2.00% notes due 2032 (2.00% 2032 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 2.00% 2.00% 2.00%   2.00%    
3.15% notes due 2040 (3.15% 2040 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 3.15% 3.15% 3.15%   3.15%    
4.20% notes due 2052 (4.20% 2052 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.20% 4.20% 4.20%   4.20%    
4.40% notes due 2062 (4.40% 2062 Notes) | Notes              
Debt Instrument [Line Items]              
Interest rate, stated percentage 4.40% 4.40% 4.40%   4.40%