Segment Information (Schedule Of Financial Information Attributable To Geographic Regions) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 01, 2022	Oct. 02, 2021	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 1,216.6	$ 892.7	$ 886.9	$ 814.1	$ 780.5	$ 758.2	$ 634.1	$ 734.2	$ 3,810.3	$ 2,907.0	$ 3,238.0
Long-lived assets	908.5				555.5				908.5	555.5
United States
Segment Reporting Information [Line Items]
Net Sales									2,364.7	1,885.1	2,071.9
Long-lived assets	363.6				200.5				363.6	200.5
Mexico
Segment Reporting Information [Line Items]
Long-lived assets	204.6				141.2				204.6	141.2
China
Segment Reporting Information [Line Items]
Long-lived assets	91.2				85.7				91.2	85.7
Rest of the World
Segment Reporting Information [Line Items]
Net Sales									1,445.6	1,021.9	$ 1,166.1
Long-lived assets	$ 249.1				$ 128.1				$ 249.1	$ 128.1