v3.26.1
Fair value measurements - Financial Assets and Liabilities at Fair Value (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Dec. 28, 2025
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets $ 1,159    
Derivatives designated as hedging instruments : Liabilities 5,804    
Available-for-sale Securities, Equity Securities 703   $ 665
Available-for-sale Securities 6,675   2,854
Contingent consideration 754   753
Total Gross Assets 1,206   1,313
Credit Support Agreement (CSA) (1,094)   (1,308)
Total Net Asset 112   5
Total Gross Liabilities 5,853   6,307
Credit Support Agreement (CSA) (5,829)   (5,903)
Total Net Liabilities 24   404
Beginning Balance 753 $ 1,217  
Changes in estimated fair value(6) 1 14  
Additions 0 0  
Payments 0 0  
Ending Balance 754 $ 1,231  
Quoted prices in active markets for identical assets and liabilities Level 1      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 0    
Derivatives designated as hedging instruments : Liabilities 0    
Available-for-sale Securities, Equity Securities 703   665
Available-for-sale Securities 0    
Contingent consideration 0    
Significant other observable inputs Level 2      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 1,159   1,275
Derivatives designated as hedging instruments : Liabilities 5,804   6,261
Available-for-sale Securities, Equity Securities 0    
Available-for-sale Securities 6,675    
Contingent consideration 0    
Significant unobservable inputs Level 3      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 0    
Derivatives designated as hedging instruments : Liabilities 0    
Available-for-sale Securities, Equity Securities 0    
Available-for-sale Securities 0    
Contingent consideration 754   753
Interest Rate Contract      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 610    
Derivatives designated as hedging instruments : Liabilities 5,386    
Interest Rate Contract | Quoted prices in active markets for identical assets and liabilities Level 1      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 0    
Derivatives designated as hedging instruments : Liabilities 0    
Interest Rate Contract | Significant other observable inputs Level 2      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 610   589
Derivatives designated as hedging instruments : Liabilities 5,386   5,848
Interest Rate Contract | Significant unobservable inputs Level 3      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 0    
Derivatives designated as hedging instruments : Liabilities 0    
Forward foreign exchange contracts      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 549    
Derivatives designated as hedging instruments : Liabilities 418    
Derivatives not designated as hedging instruments : Assets 47    
Derivatives not designated as hedging instruments : Liabilities 49    
Forward foreign exchange contracts | Quoted prices in active markets for identical assets and liabilities Level 1      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 0    
Derivatives designated as hedging instruments : Liabilities 0    
Derivatives not designated as hedging instruments : Assets 0    
Derivatives not designated as hedging instruments : Liabilities 0    
Forward foreign exchange contracts | Significant other observable inputs Level 2      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 549   686
Derivatives designated as hedging instruments : Liabilities 418   413
Derivatives not designated as hedging instruments : Assets 47   38
Derivatives not designated as hedging instruments : Liabilities 49   $ 46
Forward foreign exchange contracts | Significant unobservable inputs Level 3      
Financial assets and liabilities at fair value      
Derivatives designated as hedging instruments : Assets 0    
Derivatives designated as hedging instruments : Liabilities 0    
Derivatives not designated as hedging instruments : Assets 0    
Derivatives not designated as hedging instruments : Liabilities $ 0