v3.26.1
Fair value measurements - Derivatives, Balance Sheet Location (Details) - USD ($)
$ in Millions
Jun. 28, 2026
Dec. 28, 2025
Derivative [Line Items]    
Carrying Amount of the Hedged Liability $ 5,538 $ 6,307
Designated as Hedging Instrument    
Derivative [Line Items]    
Carrying Amount of the Hedged Liability 8,324 8,318
Cumulative Amount of Fair Value Hedging Gain/ (Loss) Included in the Carrying Amount of the Hedged Liability $ (688) $ (694)