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Restructuring - Schedule of Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 53	$ 58
Medical Devices
Restructuring Reserve [Roll Forward]
Reserve balance beginning	144
Restructuring charges	104
Payments for Restructuring	(96)
Restructuring Reserve, Settled without Cash	(14)
Reserve balance ending	$ 138
Period of cash outlays for severance expected to be paid out	18 months
Medical Devices | Employee Severance
Restructuring Reserve [Roll Forward]
Reserve balance beginning	$ 135
Restructuring charges	0
Payments for Restructuring	(5)
Restructuring Reserve, Settled without Cash	0
Reserve balance ending	130
Medical Devices | Asset Write-off
Restructuring Reserve [Roll Forward]
Reserve balance beginning	0
Restructuring charges	14
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash	(14)
Reserve balance ending	0
Medical Devices | Other Restructuring
Restructuring Reserve [Roll Forward]
Reserve balance beginning	9
Restructuring charges	90
Payments for Restructuring	(91)
Restructuring Reserve, Settled without Cash
Reserve balance ending	$ 8

X

- Definition

Restructuring And Related Cost, Expected Period Of Cash Outlays For Severance Paid

+ References

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
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-Section 45
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- Definition

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.

+ References

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

+ References

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