Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 28, 2025	Mar. 29, 2024	Dec. 27, 2024	Nov. 29, 2024
Schedule of Intangible Asset by Major Class [Line Items]
Intangible assets, net	$ 406.1		$ 419.4
Amortization of Intangible Assets	$ 13.4	$ 24.8
Loss from continuing operations	$ (1.42)	$ (3.33)
Therakos [Member]
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross				$ 129.4
Accumulated amortization				20.7
Intangible assets, net				$ 108.7
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	$ 495.2		495.2
Accumulated amortization	$ (89.1)		$ (75.8)