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Guarantees (Narrative) (Details) - USD ($)
$ in Millions
Dec. 30, 2022
Dec. 31, 2021
Others    
Guarantor Obligations [Line Items]    
Maximum future payments $ 30.1  
Asset Pledged as Collateral [Member]    
Guarantor Obligations [Line Items]    
Restricted Cash 37.9  
Mallinckrodt Baker | Indemnification Agreement    
Guarantor Obligations [Line Items]    
Escrow 30.0  
Mallinckrodt Baker | Indemnification Agreement | Other Liabilities    
Guarantor Obligations [Line Items]    
Guarantors obligation   $ 14.9
Mallinckrodt Baker | Indemnification Agreement | Other Assets    
Guarantor Obligations [Line Items]    
Escrow $ 19.3 19.0
Mallinckrodt Baker | Enviornmental, Health and Safety Matters | Indemnification Agreement | Other Liabilities    
Guarantor Obligations [Line Items]    
Guarantors obligation   $ 12.1