Fair Value Measurements - Financial Assets and Liabilities at Fair Value (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 03, 2022	Jul. 04, 2021	Jan. 02, 2022
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	$ 3,293
Derivatives designated as hedging instruments : Liabilities	3,053
Available-for-sale Securities, Equity Securities	1,340		$ 1,884
Available-for-sale Securities	21,123		19,727
Contingent consideration	536		533
Total Gross Assets	3,340		1,360
Credit Support Agreement (CSA)	(3,226)		(1,285)
Total Net Asset	114		75
Total Gross Liabilities	3,097		1,888
Credit Support Agreement (CSA)	(2,993)		(1,855)
Total Net Liabilities	104		33
Beginning Balance	533	$ 633
Changes in estimated fair value (6)	(88)	8
Additions	91	0
Payments	0	(48)
Ending Balance	536	$ 593
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	1,340		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	3,293		1,336
Derivatives designated as hedging instruments : Liabilities	3,053		1,860
Available-for-sale Securities, Equity Securities	0
Available-for-sale Securities	21,123
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	536		533
Interest Rate Contract
Financial assets and liabilities at fair value
Derivatives designated as hedging instruments : Assets	1,979
Derivatives designated as hedging instruments : Liabilities	1,540
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	1,979		796
Derivatives designated as hedging instruments : Liabilities	1,540		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	1,314
Derivatives designated as hedging instruments : Liabilities	1,513
Derivatives not designated as hedging instruments : Assets	47
Derivatives not designated as hedging instruments : Liabilities	44
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	1,314		540
Derivatives designated as hedging instruments : Liabilities	1,513		881
Derivatives not designated as hedging instruments : Assets	47		24
Derivatives not designated as hedging instruments : Liabilities	44		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	519		520
Other Current Liabilities
Financial assets and liabilities at fair value
Contingent consideration	$ 17		$ 13