Acquisition and Equity-Method Investment - Schedule of Equity-Method Investment (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 29, 2024	Jun. 30, 2024	Oct. 01, 2023	Jul. 02, 2023	Sep. 29, 2024	Jun. 30, 2024	Oct. 01, 2023	Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]
Net sales	$ 17,702		$ 13,491		$ 45,864		$ 44,984
Income from continuing operations	4,481		(2,388)		7,640		5,507
Net income/(loss)	4,473		(2,376)		7,644		5,518
Income attributable to shareholders	$ 4,465		$ (2,382)		$ 7,621		$ 5,488
Haleon [Member]
Schedule of Equity Method Investments [Line Items]
Net sales		$ 3,503				$ 10,636
Cost of sales		(1,346)				(4,312)
Gross profit		2,157				6,324
Income from continuing operations		400				1,019
Net income/(loss)		400				1,019
Income attributable to shareholders		$ 388				$ 971
Haleon / Consumer Healthcare JV [Member]
Schedule of Equity Method Investments [Line Items]
Net sales				$ 3,490				$ 10,379
Cost of sales				(1,323)				(4,211)
Gross profit				2,167				6,168
Income from continuing operations				403				1,133
Net income/(loss)				403				1,133
Income attributable to shareholders				$ 382				$ 1,066