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Acquisitions - Narrative (Details) $ in Millions		3 Months Ended
Acquisitions - Narrative (Details) $ in Millions	Sep. 30, 2022 USD ($) plant	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Goodwill			$ 3,410	$ 3,352	$ 3,284
Pet Nutrition
Business Acquisition [Line Items]
Goodwill			485	488	$ 15
Red Collar
Business Acquisition [Line Items]
Number of food manufacturing plants \| plant	3
Purchase price consideration	$ 719
Payments to acquire business		$ 719
Goodwill				$ 413
Red Collar \| Pet Nutrition
Business Acquisition [Line Items]
Goodwill			$ 413