Consolidated Statements of Changes in Shareholders' Equity Deficit - 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. 30, 2018	$ (654.7)			$ 0.0	$ 0.0	$ 946.4	$ (1,548.9)	$ (52.2)
Beginning balance, shares at Dec. 30, 2018				145,173,489	0
Net loss	$ (156.9)						(156.9)
Exercise of stock options, net of shares retained for taxes, shares	0			952,161
Restricted stock grant, net of shares retained for taxes, shares	0			342,895
Share repurchases	$ (0.3)					(0.3)
Share repurchases, shares				30,971
Recognition of stock-based compensation	18.6					18.6
Impact from adoption of ASU 2017-12	0.0						0.2	(0.2)
Pension and other postemployment benefits, net of tax of $0.0	(3.3)							(3.3)
Foreign currency derivatives, net of tax of $0.0		$ 2.1	$ (17.4)						$ 2.1	$ (17.4)
Interest rate derivatives, net of tax of $0.0		2.1	(17.4)						2.1	(17.4)
Foreign currency translation adjustments	(0.9)							(0.9)
Ending balance at Dec. 29, 2019	(812.8)			$ 0.0	$ 0.0	964.7	(1,705.6)	(71.9)
Ending balance, shares at Dec. 29, 2019				146,437,574	0
Net loss	(211.9)						(211.9)
Exercise of stock options, net of shares retained for taxes	$ 1.8					1.8
Exercise of stock options, net of shares retained for taxes, shares				486,629
Restricted stock grant, net of shares retained for taxes, shares	0			371,308
Recognition of stock-based compensation	$ 8.6					8.6
Pension and other postemployment benefits, net of tax of $0.0	(0.2)							(0.2)
Foreign currency derivatives, net of tax of $0.0		(7.6)	(48.1)						(7.6)	(48.1)
Interest rate derivatives, net of tax of $0.0		(7.6)	(48.1)						(7.6)	(48.1)
Foreign currency translation adjustments	59.4							59.4
Ending balance at Jan. 03, 2021	(1,010.8)			$ 0.0	$ 0.0	975.1	(1,917.5)	(68.4)
Ending balance, shares at Jan. 03, 2021				147,295,511	0
Net loss	(54.3)						(54.3)
Issuance of ordinary shares upon completion of initial public offering, net of commissions, underwriting discounts and offering costs, shares				87,400,000
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 incorporation shares consisting of ordinary shares and preferred redeemable shares, shares				1	50,000
Stock Issued During Period, Value, Other	0.1				$ 0.1
Exercise of stock options, net of shares retained for taxes	$ 13.1					13.1
Exercise of stock options, net of shares retained for taxes, shares	2,338,652			2,183,744
Restricted stock grant, net of shares retained for taxes	0			324,623
Recognition of stock-based compensation	$ 22.5					22.5
Pension and other postemployment benefits, net of tax of $0.0	(1.2)							(1.2)
Foreign currency derivatives, net of tax of $0.0		6.6	34.4						6.6	34.4
Interest rate derivatives, net of tax of $0.0		$ 6.6	$ 34.4						$ 6.6	$ 34.4
Foreign currency translation adjustments	(17.5)							(17.5)
Ending balance at Jan. 02, 2022	$ 410.5			$ 0.0	$ 0.1	$ 2,425.9	$ (1,971.8)	$ (43.7)
Ending balance, shares at Jan. 02, 2022				237,203,879	50,000