v3.25.4
Fair value measurements - Schedule of Effect of Derivatives not Designated as Hedging Instruments (Details) - Forward foreign exchange contracts: - Not Designated as Hedging Instrument - USD ($)
$ in Millions
 12 Months Ended
Dec. 28, 2025
Dec. 29, 2024
Derivative Instruments, Gain (Loss) [Line Items]    
Gain/(Loss) Recognized In Income on Derivative $ (265) $ 8
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other (income) expense, net Other (income) expense, net