Goodwill and Intangible Assets - Changes in the Carrying Amount of Goodwill by Segment (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Goodwill [Roll Forward]
Beginning balance				$ 30,459
Translation adjustments and other				48
Impairment losses				(1,561)	$ (510)
Ending balance	$ 28,946			28,946
Goodwill impairment losses	707		$ 510	1,561	$ 510
Indefinite-lived intangible assets	38,046			38,046		$ 38,502
Lunchables, Claussen and Wattie's
Goodwill [Roll Forward]
Indefinite-lived intangible assets	1,200			1,200
Continental Europe
Goodwill [Roll Forward]
Ending balance	501			501
Goodwill impairment losses	479
LATAM
Goodwill [Roll Forward]
Goodwill impairment losses	184
AFH Reporting Unit (Away from Home and Kraft Heinz Ingredients)
Goodwill [Roll Forward]
Ending balance	2,800			2,800
Goodwill impairment losses	44
International Developed Markets
Goodwill [Roll Forward]
Translation adjustments and other				85
Impairment losses				(479)
Ending balance	2,293			2,293
International Developed Segment
Goodwill [Roll Forward]
Beginning balance				2,687
North America
Goodwill [Roll Forward]
Beginning balance				27,248
Translation adjustments and other				(14)
Impairment losses		$ (854)		(898)
Ending balance	26,336			26,336
Goodwill impairment losses				58
Emerging Markets
Goodwill [Roll Forward]
Beginning balance				524
Translation adjustments and other				(23)
Impairment losses				(184)
Ending balance	$ 317			$ 317