Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jun. 28, 2020	Jul. 04, 2021	Jun. 28, 2020
Income Statement [Abstract]
Net revenue	$ 492.5	$ 390.5	$ 999.3	$ 798.5
Cost of revenue, excluding amortization of intangible assets	248.1	202.9	496.3	416.1
Gross profit	244.4	187.6	503.0	382.4
Selling, marketing and administrative expenses	138.7	109.5	270.2	226.9
Research and development expense	30.4	25.8	59.3	49.4
Amortization of intangible assets	33.5	32.6	66.9	65.6
Other operating expense, net	10.5	4.4	17.9	13.3
Income from operations	31.3	15.3	88.8	27.2
Interest expense, net	33.0	47.5	76.4	99.7
Tax indemnification income, net	(0.2)	(2.4)	(0.4)	(4.9)
Other expense, net	3.4	7.7	53.4	67.0
Loss before provision for income taxes	(4.9)	(37.5)	(40.7)	(134.6)
Provision for income taxes	15.1	3.8	18.4	7.9
Net loss	$ (20.0)	$ (41.3)	$ (59.1)	$ (142.5)
Basic and diluted net loss per ordinary share	$ (0.09)	$ (0.28)	$ (0.27)	$ (0.97)
Basic and diluted weighted-average ordinary shares outstanding	234.6	146.4	220.4	146.3