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Inventories - Additional Information (Details) - USD ($)
$ in Millions
Sep. 26, 2025
Jul. 31, 2025
Dec. 27, 2024
Inventory [Line Items]      
Inventories $ 1,322.3   $ 664.9
Inventory noncurrent 514.1   514.1
Fair Value Adjustment to Inventory      
Inventory [Line Items]      
Inventories 721.6    
Inventory noncurrent $ 409.4   $ 0.0
Mallinckrodt & Endo Merger      
Inventory [Line Items]      
Inventory acquired, current   $ 885.7  
Inventories, long-term   $ 502.6