Earnings Per Share and Shareholders' Equity (Details) - USD ($) shares in Millions		3 Months Ended						9 Months Ended
		Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Sep. 26, 2020	Sep. 28, 2019	Oct. 31, 2018
Numerator:
Net income (loss)		$ (154,600,000)	$ 60,600,000	$ 106,400,000	$ 92,200,000	$ 9,000,000.0	$ 63,900,000	$ 12,400,000	$ 165,100,000
Denominator:
Weighted average shares outstanding for basic EPS		136.5			136.0			136.3	136.0
Dilutive effect of share-based awards (in shares)	[1]	0.0			0.8			1.2	0.4
Weighted average shares outstanding for diluted EPS		136.5			136.8			137.5	136.4
Anti-dilutive share-based awards excluded from computation of diluted EPS (shares)	[1]	0.0			1.5			1.5	1.8
Stock repurchase program, authorized amount										$ 1,000,000,000.0
Repurchases of ordinary shares (shares)		0.0			0.0			0.0	0.0

[1] In the period of a net loss, diluted shares equal basic shares.