v3.26.1
Fair value measurements - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 29, 2026
Jun. 28, 2026
Dec. 28, 2025
Derivative [Line Items]      
Accumulated other comprehensive loss on derivatives, after tax   $ (900)  
Hedging exposure   18 months  
Weighted average interest rate on non-current debt   3.57%  
Excess of carrying value over fair value of debt     $ 1,700
Current Debt   $ 11,692 8,495
Cash and Cash Equivalents   20,422 19,709
Money market funds | Fair Value, Inputs, Level 1 [Member]      
Derivative [Line Items]      
Cash and Cash Equivalents   4,749 5,993
Commercial Paper      
Derivative [Line Items]      
Current Debt   $ 9,900 $ 6,500
Weighted average interest rate   3.68% 3.81%
Term 2 months 2 months  
Forward foreign exchange contracts      
Derivative [Line Items]      
Collateral already posted, aggregate fair value   $ 4,100  
Derivative, notional amount   43,800 $ 40,600
Cross currency interest rate swaps      
Derivative [Line Items]      
Derivative, notional amount   36,800 38,900
Interest Rate Swap      
Derivative [Line Items]      
Derivative, notional amount   $ 8,000 $ 8,000