v3.25.4
Fair value measurements - Summary of Derivative Activity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2025
Dec. 29, 2024
Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income $ 493 $ 862 $ 569
Amount of gain or (loss) recognized in AOCI 1,953 (511) $ 422
Sales | Interest Rate Swap | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Sales | Cross currency interest rate swaps contracts: | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Sales | Cross currency interest rate swaps contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Sales | Forward foreign exchange contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 4 2  
Amount of gain or (loss) recognized in AOCI 11 (7)  
Cost of Products Sold | Interest Rate Swap | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Cost of Products Sold | Cross currency interest rate swaps contracts: | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Cost of Products Sold | Cross currency interest rate swaps contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Cost of Products Sold | Forward foreign exchange contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 41 426  
Amount of gain or (loss) recognized in AOCI 715 (156)  
R&D Expense | Interest Rate Swap | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
R&D Expense | Cross currency interest rate swaps contracts: | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
R&D Expense | Cross currency interest rate swaps contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
R&D Expense | Forward foreign exchange contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income (52) 33  
Amount of gain or (loss) recognized in AOCI (109) 80  
Interest (Income) Expense | Interest Rate Swap | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 338 64  
Amount of gain or (loss) recognized in AOCI (338) (64)  
Interest (Income) Expense | Cross currency interest rate swaps contracts: | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 193 148  
Amount of gain or (loss) recognized in AOCI 193 148  
Interest (Income) Expense | Cross currency interest rate swaps contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 326 247  
Amount of gain or (loss) recognized in AOCI 1,187 (597)  
Interest (Income) Expense | Forward foreign exchange contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Other (Income) Expense | Interest Rate Swap | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Other (Income) Expense | Cross currency interest rate swaps contracts: | Fair Value Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Other (Income) Expense | Cross currency interest rate swaps contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income 0 0  
Amount of gain or (loss) recognized in AOCI 0 0  
Other (Income) Expense | Forward foreign exchange contracts: | Cash Flow Hedging      
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of gain or (loss) reclassified from AOCI into income (19) 6  
Amount of gain or (loss) recognized in AOCI $ (44) $ 21