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Acquisitions - Narrative (Details) $ in Millions		3 Months Ended
Acquisitions - Narrative (Details) $ in Millions	Sep. 30, 2022 USD ($) plant	Dec. 31, 2022 USD ($)	Sep. 30, 2023 USD ($)
Business Acquisition [Line Items]
Goodwill		$ 3,352	$ 3,327
Red Collar Pet Foods
Business Acquisition [Line Items]
Dry pet food manufacturing plants \| plant	3
Payments to acquire business	$ 719
Total purchase price		719
Goodwill		413
Red Collar Pet Foods \| Pet Nutrition
Business Acquisition [Line Items]
Goodwill		$ 413