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Share Plans (Schedule of Performance Share Unit Activity) (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Dec. 30, 2022
Jun. 16, 2022
Dec. 30, 2022
Dec. 25, 2020
Dec. 27, 2019
Performance Shares          
Performance Share Unit Activity [Roll Forward]          
Beginning balance 0     1,195,505 [1]  
Granted 675,821        
Expired/Forfeited [1]       1,195,505  
Ending balance 675,821 0 675,821 0 [1]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]          
Weighted-average grant date fair value, restricted share units $ 8.34 $ 0 $ 8.34 $ 0 $ 23.85
Weighted-average grant date fair value, granted restricted share units 2.51        
Weighted-average grant date fair value, forfeited restricted share units 8.34     $ 23.85  
Weighted-average period to recognize unrecognized compensation cost, share options     1 year 10 months 24 days    
Performance Shares | Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]          
Weighted-average grant date fair value, granted restricted share units $ 8.34        
Deferred Compensation Arrangement with Individual, Compensation Expense $ 0.1        
Phantom Share Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]          
Performance Shares Award, Performance Period     3 years    
[1] The number of shares disclosed within this table are at the target number of 100.0%.