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Fair Value Measurements - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Jan. 03, 2021	Dec. 22, 2022
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	$ 2,163
Derivatives designated as hedging instruments : Liabilities	3,289
Equity Investments	576	$ 1,884
Debt securities	10,487	19,727
Contingent consideration liability	1,120	533
Total Gross Assets	2,201	1,360
Credit Support Agreement (CSA)	$ (2,176)	$ (1,285)
Derivative Asset, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag	Total Net Asset	Total Net Asset
Total Net Asset	$ 25	$ 75
Total Gross Liabilities	3,357	1,888
Credit Support Agreement (CSA)	$ (3,023)	$ (1,855)
Derivative Liability, Statement Of Financial Position, Extensible Enumeration, Not Disclosed Flag	Total Net Liabilities	Total Net Liabilities
Total Net Liabilities	$ 334	$ 33
Beginning Balance	533	633	$ 1,715
Changes in estimated fair value	(194)	(52)	(1,089)
Additions (7)	792	0	106
Payments	(11)	(48)	(99)
Ending Balance	1,120	533	633
Contingent consideration reversal	0	0	(1,148)
Other Noncurrent Liabilities
Financial assets and liabilities at fair value
Contingent consideration liability	1,116	520	594
Other Current Liabilities
Financial assets and liabilities at fair value
Contingent consideration liability	4	13	$ 39
Auris Health
Financial assets and liabilities at fair value
Contingent consideration reversal	(1,148)
Abiomed
Financial assets and liabilities at fair value
Contingent consideration liability	704			$ 700
Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Equity Investments	576	1,884
Debt securities	0
Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	2,163	1,336
Derivatives designated as hedging instruments : Liabilities	3,289	1,860
Equity Investments	0
Debt securities	10,487
Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Equity Investments	0
Debt securities	0
Contingent consideration liability	1,120	533
Interest rate swaps contracts:
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	1,534
Derivatives designated as hedging instruments : Liabilities	2,778
Interest rate swaps contracts: | Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Interest rate swaps contracts: | Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	1,534	796
Derivatives designated as hedging instruments : Liabilities	2,778	979
Interest rate swaps contracts: | Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Foreign exchange contracts
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	629
Derivatives designated as hedging instruments : Liabilities	511
Derivatives not designated as hedging instruments : Assets	38
Derivatives not designated as hedging instruments : Liabilities	68
Foreign exchange contracts | Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Derivatives not designated as hedging instruments : Assets	0
Derivatives not designated as hedging instruments : Liabilities	0
Foreign exchange contracts | Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	629	540
Derivatives designated as hedging instruments : Liabilities	511	881
Derivatives not designated as hedging instruments : Assets	38	24
Derivatives not designated as hedging instruments : Liabilities	68	$ 28
Foreign exchange contracts | Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Derivatives not designated as hedging instruments : Assets	0
Derivatives not designated as hedging instruments : Liabilities	$ 0

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-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959

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