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Acquisitions - Narrative (Details)
$ in Millions
3 Months Ended
Sep. 30, 2022
USD ($)
plant
Dec. 31, 2022
USD ($)
Mar. 31, 2023
USD ($)
Business Acquisition [Line Items]      
Goodwill   $ 3,352 $ 3,375
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   418  
Red Collar Pet Foods | Pet Nutrition      
Business Acquisition [Line Items]      
Goodwill   $ 418