Equity - Movement in Number of Shares in Issue (Details) - shares	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Increase (Decrease) in Stockholders' Equity
Balance as of the beginning of the period (in shares)	290,157,299	289,847,574
Exercise of share options (in shares)	318,607	190,034
Vesting of restricted stock units, net of witholding taxes (in shares)	190,632	5,812
Balance as of the end of the period (in shares)	290,666,538	290,043,420