Share Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	6 Months Ended		11 Months Ended	12 Months Ended
	Dec. 29, 2023	Dec. 30, 2022	Jun. 16, 2022	Nov. 14, 2023	Dec. 27, 2024	Dec. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation cost	$ 0.0	$ 1.4	$ 1.7	$ 8.9	$ 7.2
Tax benefit from share-based compensation cost	$ 0.0	$ 0.0	$ 0.0	0.0		$ 0.0
Share-based Compensation Arrangements by Share-based Payment Award, Equity Instruments Other than Options, Granted in Period, Fair value				$ 12.7
Share Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period					4 years
Expiration period					10 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value, granted restricted share units		$ 8.34		$ 10.13	$ 48.19