Segment and Geographic Information - Adjusted EBITDA by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 139.6	$ 119.5	$ 420.1	$ 322.4
Operating Segments | Americas
Segment Reporting Information [Line Items]
Adjusted EBITDA	125.0	116.8	394.2	329.9
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Adjusted EBITDA	17.2	10.7	47.7	31.4
Operating Segments | Greater China
Segment Reporting Information [Line Items]
Adjusted EBITDA	42.2	41.1	91.7	78.9
Operating Segments | Other
Segment Reporting Information [Line Items]
Adjusted EBITDA	19.0	16.7	61.4	49.9
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ (63.8)	$ (65.9)	$ (174.8)	$ (167.8)