Goodwill and Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023	Dec. 29, 2023
Schedule of Intangible Asset by Major Class [Line Items]
Intangible assets, net	$ 560.3		$ 560.3		$ 608.4
Amortization of Intangible Assets	$ 23.3	$ 129.3	$ 48.1	$ 262.5
Loss from continuing operations	$ (2.20)	$ (56.74)	$ (5.53)	$ (75.68)
Completed Technology
Schedule of Intangible Asset by Major Class [Line Items]
Amortizable intangible assets, gross	$ 624.6		$ 624.6		624.6
Accumulated amortization	$ 64.3		$ 64.3		$ 16.2