Restructuring, Asset Impairments and Other, Net - Schedule of Activity Included in Restructuring, Asset Impairments, and Other, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 31.3
Asset Impairments	1.4
Other	0.1
Total	32.8	$ 5.6
Other
Restructuring Cost and Reserve [Line Items]
Restructuring	0.0
Asset Impairments	1.4
Other	0.1
Total	1.5
Voluntary separation program
Restructuring Cost and Reserve [Line Items]
Restructuring	27.5
Asset Impairments	0.0
Other	0.0
Total	27.5
General workforce reduction
Restructuring Cost and Reserve [Line Items]
Restructuring	3.4
Asset Impairments	0.0
Other	0.0
Post-Quantenna acquisition restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring	0.4
Asset Impairments	0.0
Other	0.0
Total	$ 0.4