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Retirement Benefit Plans - Net Funded Status and Amounts Recognized in Balance Sheet (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 25, 2021
Dec. 26, 2020
Change in plan assets at fair value:      
Beginning balance, plan assets $ 0.1    
Ending balance, plan assets 3.3 $ 0.1  
Amounts Recognized in Consolidated Balance Sheet      
Fair value of plan assets 3.3 0.1  
Accrued liabilities (2.6) (1.9)  
Long-term pension liabilities (50.9) (84.3)  
Other liabilities (6.7) (9.3)  
Items Not Yet Recognized as Component of Pension Expense      
Accumulated other comprehensive loss (pretax) (4.3) 28.0  
Pension Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Accumulated benefit obligation 94.8 139.2  
Change in benefit obligations:      
Service cost 4.8 6.2 $ 7.7
Interest cost 3.1 2.8 3.6
Change in plan assets at fair value:      
Beginning balance, plan assets 82.4    
Ending balance, plan assets 66.0 82.4  
Amounts Recognized in Consolidated Balance Sheet      
Fair value of plan assets 66.0 82.4  
Items Not Yet Recognized as Component of Pension Expense      
Unrecognized transition obligation 1.1 2.9  
Unrecognized prior service cost (benefit) 1.8 1.8  
Unrecognized net actuarial loss (2.7) 26.8  
Accumulated other comprehensive loss (pretax) 0.2 31.5  
Pension Benefits | Foreign plans      
Change in benefit obligations:      
Beginning balance, benefit obligations 133.4 185.5  
Service cost 4.6 6.0  
Interest cost 2.3 2.0  
Actuarial gain (31.5) (14.0)  
Benefits paid (2.3) (4.9)  
Impact of exchange rates (7.5) (11.7)  
Plan participant contributions 0.1 5.4  
Plan amendments (0.1) (0.4)  
Settlements/Curtailments (6.3) (34.5)  
Ending balance, benefit obligations 92.7 133.4 185.5
Change in plan assets at fair value:      
Beginning balance, plan assets 56.4 83.3  
Actual return on plan assets (3.7) 4.4  
Company contributions 6.4 5.2  
Plan Participant Contributions 2.1 5.4  
Benefits and expenses paid (2.3) (3.0)  
Business combination 0.0 0.0  
Impact of exchange rates (3.9) (5.3)  
Settlements (6.0) (33.6)  
Ending balance, plan assets 49.0 56.4 83.3
Funded status of plan (43.7) (77.0)  
Amounts Recognized in Consolidated Balance Sheet      
Fair value of plan assets 49.0 56.4 83.3
Pension Benefits | United States      
Change in benefit obligations:      
Beginning balance, benefit obligations 34.4 39.1  
Service cost 0.0 0.0  
Interest cost 0.8 0.8  
Actuarial gain (8.2) (0.7)  
Benefits paid (0.9) (1.0)  
Impact of exchange rates 0.0 0.0  
Plan participant contributions 0.0 0.0  
Plan amendments 0.0 0.0  
Settlements/Curtailments (3.8) (3.8)  
Ending balance, benefit obligations 22.3 34.4 39.1
Change in plan assets at fair value:      
Beginning balance, plan assets 26.0 27.5  
Actual return on plan assets (5.9) 1.8  
Company contributions 1.5 1.5  
Plan Participant Contributions 0.0 0.0  
Benefits and expenses paid (0.8) (1.0)  
Business combination 0.0 0.0  
Impact of exchange rates 0.0 0.0  
Settlements (3.8) (3.8)  
Ending balance, plan assets 17.0 26.0 27.5
Funded status of plan (5.3) (8.4)  
Amounts Recognized in Consolidated Balance Sheet      
Fair value of plan assets 17.0 26.0 27.5
Post-retirement Benefits      
Change in benefit obligations:      
Service cost 0.0 0.0 0.1
Interest cost 0.3 0.4 0.4
Items Not Yet Recognized as Component of Pension Expense      
Unrecognized transition obligation 0.0 0.0  
Unrecognized prior service cost (benefit) (1.5) (2.1)  
Unrecognized net actuarial loss (3.0) (1.4)  
Accumulated other comprehensive loss (pretax) (4.5) (3.5)  
Post-retirement Benefits | United States      
Change in benefit obligations:      
Beginning balance, benefit obligations 10.3 11.8  
Service cost 0.0 0.0  
Interest cost 0.3 0.4  
Actuarial gain (1.7) (0.5)  
Benefits paid (1.3) (1.4)  
Impact of exchange rates 0.0 0.0  
Plan participant contributions 0.0 0.0  
Plan amendments 0.0 0.0  
Settlements/Curtailments 0.0 0.0  
Ending balance, benefit obligations 7.6 10.3 11.8
Change in plan assets at fair value:      
Beginning balance, plan assets 0.0 0.0  
Actual return on plan assets 0.0 0.0  
Company contributions 1.3 1.4  
Plan Participant Contributions 0.0 0.0  
Benefits and expenses paid (1.3) (1.4)  
Business combination 0.0 0.0  
Impact of exchange rates 0.0 0.0  
Settlements 0.0 0.0  
Ending balance, plan assets 0.0 0.0 0.0
Funded status of plan (7.6) (10.3)  
Amounts Recognized in Consolidated Balance Sheet      
Fair value of plan assets $ 0.0 $ 0.0 $ 0.0