Consolidated Statements of Changes in Shareholders' Equity (Deficit) (Unaudited) - USD ($) $ in Millions	Total	Foreign Currency Derivatives	Interest Rate Derivatives	Ordinary Shares	Preferred Redeemable Shares	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Foreign Currency Derivatives	Accumulated Other Comprehensive Loss Interest Rate Derivatives
Beginning balance at Dec. 29, 2019	$ (812.8)			$ 0.0	$ 0.0	$ 964.7	$ (1,705.6)	$ (71.9)
Beginning balance, shares at Dec. 29, 2019				146,437,574	0
Net income (loss)	(171.0)						(171.0)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings				2,831
Exercise of stock options	0.2					0.2
Exercise of stock options, shares				144,161
Recognition of stock-based compensation	6.2					6.2
Derivatives, net of tax of $0.0		$ (2.3)	$ (49.0)						$ (2.3)	$ (49.0)
Foreign currency translation adjustments	1.7							1.7
Ending balance at Sep. 27, 2020	(1,027.0)			$ 0.0	$ 0.0	971.1	(1,876.6)	(121.5)
Ending balance, shares at Sep. 27, 2020				146,584,566	0
Beginning balance at Jun. 28, 2020	(1,006.5)			$ 0.0	$ 0.0	968.7	(1,848.1)	(127.1)
Beginning balance, shares at Jun. 28, 2020				146,560,341	0
Net income (loss)	(28.5)						(28.5)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings				2,831
Exercise of stock options, shares				21,394
Recognition of stock-based compensation	2.4					2.4
Derivatives, net of tax of $0.0		(3.5)	1.0						(3.5)	1.0
Foreign currency translation adjustments	8.1							8.1
Ending balance at Sep. 27, 2020	(1,027.0)			$ 0.0	$ 0.0	971.1	(1,876.6)	(121.5)
Ending balance, shares at Sep. 27, 2020				146,584,566	0
Beginning balance at Jan. 03, 2021	(1,010.8)			$ 0.0	$ 0.0	975.1	(1,917.5)	(68.4)
Beginning balance, shares at Jan. 03, 2021				147,295,511	0
Net income (loss)	(44.4)						(44.4)
Restricted Stock, Shares Vested Net of Shares for Tax Withholdings				321,653
Issuance of ordinary shares upon completion of initial public offering, net of commissions, underwriting discounts and offering costs	1,415.2					1,415.2
Issuance of ordinary shares upon completion of initial public offering, net of commissions, underwriting discounts and offering costs, shares				87,400,000
Issuance of incorporation shares consisting of ordinary share and preferred redeemable shares	0.1				$ 0.1
Issuance of incorporation shares consisting of ordinary shares and preferred redeemable shares, shares				1	50,000
Exercise of stock options	9.9					9.9
Exercise of stock options, shares				1,662,272
Recognition of stock-based compensation	19.6					19.6
Derivatives, net of tax of $0.0		6.4	22.7						6.4	22.7
Foreign currency translation adjustments	(21.7)							(21.7)
Ending balance at Oct. 03, 2021	396.9			$ 0.0	$ 0.1	2,419.7	(1,961.9)	(61.0)
Ending balance, shares at Oct. 03, 2021				236,679,437	50,000
Beginning balance at Jul. 04, 2021	375.6			$ 0.0	$ 0.1	2,407.0	(1,976.6)	(54.9)
Beginning balance, shares at Jul. 04, 2021				234,921,002	50,000
Net income (loss)	14.7						14.7
Restricted Stock, Shares Vested Net of Shares for Tax Withholdings				321,653
Exercise of stock options	7.6					7.6
Exercise of stock options, shares				1,436,782
Recognition of stock-based compensation	5.1					5.1
Derivatives, net of tax of $0.0		$ 2.1	$ 5.9						$ 2.1	$ 5.9
Foreign currency translation adjustments	(13.9)							(13.9)
Ending balance at Oct. 03, 2021	$ 396.9			$ 0.0	$ 0.1	$ 2,419.7	$ (1,961.9)	$ (61.0)
Ending balance, shares at Oct. 03, 2021				236,679,437	50,000