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Acquisitions - Narrative (Details) $ in Millions		3 Months Ended	12 Months Ended
Acquisitions - Narrative (Details) $ in Millions	Sep. 30, 2022 USD ($) plant	Dec. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Goodwill		$ 3,352	$ 3,352	$ 3,284	$ 3,824
Pet Nutrition
Business Acquisition [Line Items]
Goodwill		488	488	$ 15	$ 15
Red Collar
Business Acquisition [Line Items]
Number Of food manufacturing plants \| plant	3
Purchase price consideration	$ 727
Goodwill, period decrease		(8)
Payments to acquire business			719
Goodwill	$ 418
Red Collar \| Pet Nutrition
Business Acquisition [Line Items]
Goodwill		$ 418	$ 418