Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 28, 2025	Dec. 29, 2024	Dec. 31, 2023
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 228	$ 234	$ 489
R&D Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring charges		100	500
Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring charges	512	269	798
Innovative Medicine
Restructuring Reserve [Roll Forward]
Restructuring charges		102
Innovative Medicine \| Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring charges	0	102	479
Innovative Medicine \| Restructuring Charges
Restructuring Reserve [Roll Forward]
Restructuring charges			449
Innovative Medicine \| Costs of Goods and Services Sold
Restructuring Reserve [Roll Forward]
Restructuring charges			30
MedTech \| Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring charges	500	167	319
Medtech Surgery Franchise \| Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring charges	205	0	0
Medtech Surgery Franchise \| Restructuring Charges
Restructuring Reserve [Roll Forward]
Restructuring charges	76
Medtech Surgery Franchise \| Costs of Goods and Services Sold
Restructuring Reserve [Roll Forward]
Restructuring charges	7
Medtech Surgery Franchise \| Other (Income) Expense
Restructuring Reserve [Roll Forward]
Restructuring charges	122
Medtech Ortho Franchise \| Restructuring Charges
Restructuring Reserve [Roll Forward]
Restructuring charges	152	132	40
Medtech Ortho Franchise \| Costs of Goods and Services Sold
Restructuring Reserve [Roll Forward]
Restructuring charges	84	$ 35	$ 279
Medtech Ortho Franchise \| Other (Income) Expense
Restructuring Reserve [Roll Forward]
Restructuring charges	71
Orthopaedics Restructuring Plan \| Operating Segments
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 307