Fair Value Measurements - Summary of Derivative Activity (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 01, 2023	Jan. 02, 2022	Jan. 03, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	$ 348	$ 789	$ 53
Amount of gain or (loss) recognized in AOCI	454	(199)	$ 1,000
Sales \| Interest Rate Swap \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Sales \| Cross currency interest rate swaps contracts: \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Sales \| Cross currency interest rate swaps contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Sales \| Forward foreign exchange contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	(72)	17
Amount of gain or (loss) recognized in AOCI	5	(94)
Cost of Products Sold \| Interest Rate Swap \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Cost of Products Sold \| Cross currency interest rate swaps contracts: \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Cost of Products Sold \| Cross currency interest rate swaps contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Cost of Products Sold \| Forward foreign exchange contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	(271)	119
Amount of gain or (loss) recognized in AOCI	319	(557)
R&D Expense \| Interest Rate Swap \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
R&D Expense \| Cross currency interest rate swaps contracts: \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
R&D Expense \| Cross currency interest rate swaps contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	0	0
Amount of gain or (loss) recognized in AOCI	0	0
R&D Expense \| Forward foreign exchange contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	149	30
Amount of gain or (loss) recognized in AOCI	61	123
Interest (Income) Expense \| Interest Rate Swap \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	(1,098)	(109)
Amount of gain or (loss) recognized in AOCI	1,098	109
Interest (Income) Expense \| Cross currency interest rate swaps contracts: \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	140	174
Amount of gain or (loss) recognized in AOCI	140	174
Interest (Income) Expense \| Cross currency interest rate swaps contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	425	402
Amount of gain or (loss) recognized in AOCI	42	9
Interest (Income) Expense \| Forward foreign exchange contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Other (Income) Expense \| Interest Rate Swap \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Other (Income) Expense \| Cross currency interest rate swaps contracts: \| Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivative amount excluded from effectiveness testing	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Other (Income) Expense \| Cross currency interest rate swaps contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	0	0
Amount of gain or (loss) recognized in AOCI	0	0
Other (Income) Expense \| Forward foreign exchange contracts: \| Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from AOCI into income	(23)	47
Amount of gain or (loss) recognized in AOCI	$ (113)	$ 146

Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

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