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Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2025	Mar. 31, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 17	$ 164
Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	55	171
MEDTECH
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100
MEDTECH | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	55	27
MEDTECH | Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges	17	20
MEDTECH | Costs of Goods and Services Sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8	7
MEDTECH | Other Nonoperating Income (Expense)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	30
Innovative Medicine
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100
Innovative Medicine | Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 144

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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