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Equity - Additional Information (Details)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Nov. 10, 2025
USD ($)
Jul. 31, 2025
USD ($)
Sep. 26, 2025
USD ($)
$ / shares
shares
Sep. 26, 2025
USD ($)
Aug. 13, 2025
shares
Earnings Per Share          
Number of shares authorized (as a percent of total shares)         0.10
Number of shares authorized (in shares) | shares         5,771,538
Subsequent Event          
Earnings Per Share          
Payments for contingent value rights award cancellation $ 35.0        
Restricted Share Units          
Earnings Per Share          
Vesting period       3 years  
Share-Based Payment Arrangement          
Earnings Per Share          
Compensation expense     $ 1.2    
Unrecognized compensation expense     $ 16.0 $ 16.0  
Mallinckrodt & Endo Merger | Restricted Share Units          
Earnings Per Share          
Conversion of RSUs (in shares) | shares     189,863    
Grant date value, RSUs (in dollars per share) | $ / shares     $ 92.30    
Mallinckrodt & Endo Merger | Share-Based Payment Arrangement          
Earnings Per Share          
Conversion of RSUs (in shares) | shares     220,953    
Grant date value, RSUs (in dollars per share) | $ / shares     $ 92.30    
Compensation expense     $ 6.0    
Unrecognized compensation expense     $ 12.1 $ 12.1  
Estimated fair value of Mallinckrodt ordinary shares issued   $ 1.9