Intangible Assets and Goodwill - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 29, 2019	Dec. 30, 2018
Goodwill [Roll Forward]
Goodwill beginning of period	$ 30,453	$ 31,906
Goodwill, related to acquisitions	3,281	403
Goodwill, related to divestitures		(1,348)
Currency translation/other	(95)	(508)
Goodwill end of period	33,639	30,453
Consumer
Goodwill [Roll Forward]
Goodwill beginning of period	8,670	8,875
Goodwill, related to acquisitions	1,188	168
Goodwill, related to divestitures		0
Currency translation/other	(122)	(373)
Goodwill end of period	9,736	8,670
Pharmaceutical
Goodwill [Roll Forward]
Goodwill beginning of period	9,063	9,109
Goodwill, related to acquisitions	75	51
Goodwill, related to divestitures		0
Currency translation/other	31	(97)
Goodwill end of period	9,169	9,063
Medical Devices
Goodwill [Roll Forward]
Goodwill beginning of period	12,720	13,922
Goodwill, related to acquisitions	2,018	184
Goodwill, related to divestitures		(1,348)
Currency translation/other	(4)	(38)
Goodwill end of period	$ 14,734	$ 12,720

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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