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Percentage change in operating income loss.

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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The net result for the period of deducting operating expenses from operating revenues.

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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.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unrealized gain (loss) recognized in the income statement on unsold other securities.

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Segments of Business and Geographic Areas - Operating Profit by Segment of Business (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020	Jan. 03, 2021
Segment Reporting Information [Line Items]
Percentage Change in Operating Income Loss	69.10%		34.90%
Earnings before provision for taxes on income	$ 6,662	$ 3,940	$ 14,091	$ 10,449
Amount prepaid and due to manufacturers					$ 1,300
Reversal of contingent consideration			0	983
Restructuring charges	56	61	109	119
Consumer Health
Segment Reporting Information [Line Items]
Litigation expense	100	600	100	600
Medical Devices
Segment Reporting Information [Line Items]
Restructuring charges	100	100
Operating Segments
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 6,906	4,192	$ 14,546	10,821
Percentage Change in Operating Income Loss	64.70%		34.40%
Operating Segments \| Consumer Health
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 804	32	$ 1,592	802
Percentage Change in Operating Income Loss			98.50%
Amortization	100	100	$ 200	200
Operating Segments \| PHARMACEUTICAL
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 4,356	4,514	$ 9,579	8,348
Percentage Change in Operating Income Loss	(3.50%)		14.70%
Amortization	$ 800	800	$ 1,700	1,600
Gain (Loss) on Disposition of Assets			600
Unrealized Gain (Loss) on Securities	200	500	100	200
Operating Segments \| Medical Devices
Segment Reporting Information [Line Items]
Total Segment Operating Income	1,746	(354)	3,375	1,671
Amortization	300	200	500	500
Unrealized Gain (Loss) on Securities	100		100
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total Segment Operating Income	$ 244	252	$ 455	$ 372
Auris Health
Segment Reporting Information [Line Items]
Reversal of contingent consideration					$ 983
Other Income \| Auris Health \| Medical Devices
Segment Reporting Information [Line Items]
Reversal of contingent consideration		$ 1,000