Net Income (Loss) Per Share - Summary of total outstanding ordinary share equivalents, unaffected by treasury stock method weighted-average calculation (Details) - shares shares in Millions	3 Months Ended
	Apr. 03, 2022	Apr. 04, 2021
OutstandingOrdinaryShareEquivalentsUnaffectedByTheTreasuryStockMethodWeightedAverageCalculationLineItem
Stock options	12.6	15.9
Unvested restricted shares and restricted stock units	0.5	1.0
Total	13.1	16.9