v3.26.1
Fair value measurements - Summary of Derivative Activity (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 29, 2026
Mar. 30, 2025
Other (income) expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) reclassified from AOCI into income $ 0 $ 0
Cross currency interest rate swaps | Other (income) expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) reclassified from AOCI into income 0 0
Fair Value Hedging | Interest Rate Swap | Sales to customers    
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
Fair Value Hedging | Interest Rate Swap | Cost of products sold    
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
Fair Value Hedging | Interest Rate Swap | Research and Development Expense    
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
Fair Value Hedging | Interest Rate Swap | Interest (income)/Interest expense, net    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 36 188
Amount of gain or (loss) recognized in AOCI (36) (188)
Fair Value Hedging | Interest Rate Swap | Other (income) expense    
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
Net Investment Hedging | Net Investment Hedging | Sales to customers    
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
Net Investment Hedging | Net Investment Hedging | Cost of products sold    
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
Net Investment Hedging | Net Investment Hedging | Research and Development Expense    
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
Net Investment Hedging | Net Investment Hedging | Interest (income)/Interest expense, net    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing 47 49
Amount of gain or (loss) recognized in AOCI 47 49
Net Investment Hedging | Net Investment Hedging | Other (income) expense    
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
Cash Flow Hedging | Forward foreign exchange contracts | Sales to customers    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI (7) 3
Amount of gain or (loss) reclassified from AOCI into income 1 (1)
Cash Flow Hedging | Forward foreign exchange contracts | Cost of products sold    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI (195) 105
Amount of gain or (loss) reclassified from AOCI into income 73 10
Cash Flow Hedging | Forward foreign exchange contracts | Research and Development Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 37 (36)
Amount of gain or (loss) reclassified from AOCI into income (5) 1
Cash Flow Hedging | Forward foreign exchange contracts | Interest (income)/Interest expense, net    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 0 0
Amount of gain or (loss) reclassified from AOCI into income 0 0
Cash Flow Hedging | Forward foreign exchange contracts | Other (income) expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 25 (11)
Amount of gain or (loss) reclassified from AOCI into income (2) 0
Cash Flow Hedging | Cross currency interest rate swaps | Sales to customers    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 0 0
Amount of gain or (loss) reclassified from AOCI into income 0 0
Cash Flow Hedging | Cross currency interest rate swaps | Cost of products sold    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 0 0
Amount of gain or (loss) reclassified from AOCI into income 0 0
Cash Flow Hedging | Cross currency interest rate swaps | Research and Development Expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 0 0
Amount of gain or (loss) reclassified from AOCI into income 0 0
Cash Flow Hedging | Cross currency interest rate swaps | Interest (income)/Interest expense, net    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 16 566
Amount of gain or (loss) reclassified from AOCI into income 83 83
Cash Flow Hedging | Cross currency interest rate swaps | Other (income) expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of gain or (loss) recognized in AOCI 0 0
Amount of gain or (loss) reclassified from AOCI into income $ 0 $ 0