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Guarantees (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 26, 2025
Dec. 27, 2024
Jun. 16, 2022
Guarantor Obligations [Line Items]      
Guarantor obligation, term 17 years    
Others      
Guarantor Obligations [Line Items]      
Maximum future payments $ 30.4 $ 29.4  
Asset Pledged as Collateral      
Guarantor Obligations [Line Items]      
Restricted cash 39.6 41.8  
Mallinckrodt Baker | Indemnification Agreement      
Guarantor Obligations [Line Items]      
Escrow deposit     $ 30.0
Mallinckrodt Baker | Indemnification Agreement | Other current and non-current assets      
Guarantor Obligations [Line Items]      
Escrow deposit $ 22.0 $ 21.3