v3.26.1
Business segment information (Details)
$ in Millions
 6 Months Ended
Jun. 27, 2026
USD ($)
customer
Jun. 28, 2025
USD ($)
Disclosure of operating segments [line items]    
Number of operating segments 4  
Number of reportable segments 3  
Revenue $ 3,097 $ 2,961
Number of major customers | customer 0  
Metal-on-metal    
Disclosure of operating segments [line items]    
Decrease in expense from reversal of provisions $ 21 11
Established Markets    
Disclosure of operating segments [line items]    
Revenue 2,549 2,483
United States of America    
Disclosure of operating segments [line items]    
Revenue 1,591 1,586
United Kingdom    
Disclosure of operating segments [line items]    
Revenue 115 114
Emerging Markets    
Disclosure of operating segments [line items]    
Revenue 548 478
Orthopaedics, Sports Medicine & ENT    
Disclosure of operating segments [line items]    
Revenue 2,230 2,116
Orthopaedics, Sports Medicine & ENT | Established Markets    
Disclosure of operating segments [line items]    
Revenue 1,810 1,752
Orthopaedics, Sports Medicine & ENT | Emerging Markets    
Disclosure of operating segments [line items]    
Revenue 420 364
Advanced Wound Management    
Disclosure of operating segments [line items]    
Revenue 867 845
Advanced Wound Management | Established Markets    
Disclosure of operating segments [line items]    
Revenue 739 731
Advanced Wound Management | Emerging Markets    
Disclosure of operating segments [line items]    
Revenue 128 114
Sports Medicine & ENT    
Disclosure of operating segments [line items]    
Revenue 1,017 923
Sports Medicine & ENT | Sports Medicine Joint Repair    
Disclosure of operating segments [line items]    
Revenue 574 509
Sports Medicine & ENT | Arthroscopic Enabling Technologies    
Disclosure of operating segments [line items]    
Revenue 340 307
Sports Medicine & ENT | ENT (Ear, Nose and Throat)    
Disclosure of operating segments [line items]    
Revenue 103 107
Advanced Wound Management    
Disclosure of operating segments [line items]    
Revenue 867 845
Advanced Wound Management | Advanced Wound Care    
Disclosure of operating segments [line items]    
Revenue 398 366
Advanced Wound Management | Advanced Wound Bioactives    
Disclosure of operating segments [line items]    
Revenue 263 285
Advanced Wound Management | Advanced Wound Devices    
Disclosure of operating segments [line items]    
Revenue 206 194
Orthopaedics    
Disclosure of operating segments [line items]    
Revenue 1,213 1,193
Orthopaedics | Knee Implants    
Disclosure of operating segments [line items]    
Revenue 492 501
Orthopaedics | Hip Implants    
Disclosure of operating segments [line items]    
Revenue 326 313
Orthopaedics | Other Reconstruction    
Disclosure of operating segments [line items]    
Revenue 68 64
Orthopaedics | Trauma & Extremities    
Disclosure of operating segments [line items]    
Revenue $ 327 $ 315