Share Plans (Schedule of Share Option Activity) (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. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Benefit from income taxes	$ (8.0)	$ (52.0)	$ (497.3)	$ (277.8)	$ (106.3)
Share Option Activity [Roll Forward]
Beginning balance		0	5,553,519	890,485	6,069,712
Expired/Forfeited			(5,553,519)		(516,193)
Ending balance		890,485	0		5,553,519
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted-average exercise price, expired and forfeited share options			$ 35.05		$ 45.63