Acquisitions and Disposition - Pro Forma Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Business Acquisition [Line Items]
Pro forma revenues	$ 1,258.1	$ 1,001.3	$ 2,495.2	$ 2,290.6
Pro forma net earnings (loss)	$ 24.0	$ 42.0	$ 51.2	$ (112.8)