Earnings Per Share and Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Oct. 31, 2018
Numerator:
Net income	$ 63.9	$ 80.8
Denominator:
Weighted average shares outstanding for basic EPS	135.9	140.8
Dilutive effect of share-based awards (in shares)	0.3	0.6
Weighted average shares outstanding for diluted EPS	136.2	141.4
Anti-dilutive share-based awards excluded from computation of diluted EPS (shares)	2.1	0.7
Stock repurchase program, authorized amount			$ 1,000.0
Stock Repurchased During Period, Shares	0.0
Share price (in dollars per share)		$ 81.92
Repurchase of equity amount		$ 108.1
Ordinary Shares Issued
Denominator:
Stock Repurchased During Period, Shares		1.3