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Stockholders' Equity (Narrative) (Detail) - USD ($) $ / shares in Units, shares in Millions	3 Months Ended					9 Months Ended
	Oct. 02, 2020	Apr. 03, 2020	Sep. 27, 2019	Jun. 28, 2019	Mar. 29, 2019	Oct. 02, 2020	Nov. 30, 2017
Equity, Class of Stock [Line Items]
Share repurchases	$ 28,000,000.0	$ 50,000,000.0	$ 120,800,000	$ 19,000,000.0	$ 40,000,000.0
2017 Stock Repurchase Program
Equity, Class of Stock [Line Items]
Remaining amount authorized	$ 94,400,000					$ 94,400,000
Maximum \| 2017 Stock Repurchase Program
Equity, Class of Stock [Line Items]
Stock repurchase program approved amount							$ 600,000,000.0
Open Market Purchases \| 2017 Stock Repurchase Program
Equity, Class of Stock [Line Items]
Stock repurchased (in shares)	0.6					1.8
Shares repurchased (in dollars per share)	$ 48.70					$ 43.03
Share repurchases	$ 28,000,000.0					$ 78,000,000.0