Condensed Consolidated Statement of Changes in Shareholders' Equity Statement - 9 months ended Sep. 28, 2018 - USD ($) $ in Millions	Total	Ordinary Shares	Treasury Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance, ordinary shares (in shares) at Dec. 29, 2017	92,196,662	92,200,000
Beginning balance, treasury shares (in shares) at Dec. 29, 2017	5,860,430		5,900,000
Beginning balance at Dec. 29, 2017	$ 6,522.0	$ 18.4	$ (1,564.7)	$ 5,492.6	$ 2,588.6	$ (12.9)
Impact of accounting standard adoptions, net of tax	1.1				2.6	(1.5)
Net income	111.4				111.4
Currency translation adjustments	(4.1)					(4.1)
Change in derivatives, net of tax	0.7					0.7
Change in benefit plans, net of tax	(0.9)					(0.9)
Vesting of restricted shares (in shares)		500,000	100,000
Vesting of restricted shares (in usd)	(1.3)	$ 0.1	$ (2.2)	0.8
Share-based compensation	27.9			27.9
Stock Issued During Period, Shares, Treasury Stock Reissued			(200,000)
Reissuance of treasury shares	2.0		$ 3.6		(1.6)
Repurchase of shares (in shares)			3,600,000
Repurchase of shares (in usd)	$ (55.2)		$ 55.2
Ending balance, ordinary shares (in shares) at Sep. 28, 2018	92,678,152	92,700,000
Ending balance, treasury shares (in shares) at Sep. 28, 2018	9,434,404		9,400,000
Ending balance at Sep. 28, 2018	$ 6,603.6	$ 18.5	$ (1,618.5)	$ 5,521.3	$ 2,701.0	$ (18.7)