v3.25.4
Financing arrangements - Debt Issuances and Acquisition-Related Financing (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Oct. 31, 2023
Mar. 31, 2023
Dec. 31, 2022
Notes            
Debt Instrument [Line Items]            
Principal Amount         $ 24,000  
Notes | 3.00% notes due 2029 (3.00% 2029 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 3.00%          
Notes | 4.05% notes due 2029 (4.05% 2029 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 4.05%          
Notes | 3.35% notes due 2032 (3.35% 2032 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 3.35%          
Notes | 4.20% notes due 2033 (4.20% 2033 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 4.20%          
Notes | 4.20% notes due 2052 (4.20% 2052 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 4.20% 4.20% 4.20%      
Notes | 4.875% notes due 2053 (4.875% 2053 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 4.875%          
Notes | 4.40% notes due 2062 (4.40% 2062 Notes)            
Debt Instrument [Line Items]            
Interest rate, stated percentage 4.40% 4.40% 4.40%      
Variable Rate Component Three | Term Loan Credit Agreement            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.225%          
Horizon Therapeutics            
Debt Instrument [Line Items]            
Term loan credit agreement, total amount           $ 4,000
Term loan credit agreement, total borrowed       $ 4,000    
Repayments of term loan credit agreement   $ 2,200        
Term loan, outstanding $ 1,800