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Exit and Disposal Activities - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 27, 2020	Mar. 28, 2020	Jun. 27, 2020	Jan. 02, 2021	Dec. 28, 2019
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs	$ 4.0		$ 11.5
Provision	3.9	$ 7.5	11.4
Restructuring reserve	$ 11.4	$ 7.5	$ 11.4		$ 0.0
Forecast
Restructuring Cost and Reserve [Line Items]
Exit and disposal costs				$ 9.3