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Fair Value Measurements - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2022	Apr. 04, 2021	Jan. 02, 2022
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	$ 1,717
Derivatives designated as hedging instruments : Liabilities	2,710
Available-for-sale Securities, Equity Securities	1,452		$ 1,884
Available-for-sale Securities	19,583		19,727
Contingent consideration	486		533
Total Gross Assets	1,753		1,360
Credit Support Agreement (CSA)	(1,655)		(1,285)
Total Net Asset	98		75
Total Gross Liabilities	2,778		1,888
Credit Support Agreement (CSA)	(2,709)		(1,855)
Total Net Liabilities	69		33
Beginning Balance	533	$ 633
Changes in estimated fair value (6)	(47)	15
Additions	0	0
Payments	0	(48)
Ending Balance	486	$ 600
Quoted prices in active markets for identical assets and liabilities Level 1
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Available-for-sale Securities, Equity Securities	1,452		1,884
Available-for-sale Securities	0
Contingent consideration	0
Significant other observable inputs Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	1,717		1,336
Derivatives designated as hedging instruments : Liabilities	2,710		1,860
Available-for-sale Securities, Equity Securities	0
Available-for-sale Securities	19,583
Contingent consideration	0
Significant unobservable inputs Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Available-for-sale Securities, Equity Securities	0
Available-for-sale Securities	0
Contingent consideration	486		533
Interest Rate Contract
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	975
Derivatives designated as hedging instruments : Liabilities	1,652
Interest Rate Contract | Quoted prices in active markets for identical assets and liabilities 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 Contract | Significant other observable inputs Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	975		796
Derivatives designated as hedging instruments : Liabilities	1,652		979
Interest Rate Contract | Significant unobservable inputs Level 3
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	0
Derivatives designated as hedging instruments : Liabilities	0
Forward foreign exchange contracts
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	742
Derivatives designated as hedging instruments : Liabilities	1,058
Derivatives not designated as hedging instruments : Assets	36
Derivatives not designated as hedging instruments : Liabilities	68
Forward foreign exchange contracts | Quoted prices in active markets for identical assets and liabilities 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
Forward foreign exchange contracts | Significant other observable inputs Level 2
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	742		540
Derivatives designated as hedging instruments : Liabilities	1,058		881
Derivatives not designated as hedging instruments : Assets	36		24
Derivatives not designated as hedging instruments : Liabilities	68		28
Forward foreign exchange contracts | Significant unobservable inputs 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
Other Noncurrent Liabilities | Auris Health
Financial assets and liabilities at fair value
Contingent consideration	469		520
Other Current Liabilities
Financial assets and liabilities at fair value
Contingent consideration	$ 17		$ 13

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