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Stockholders' Equity (Narrative) (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019	Nov. 30, 2017
Equity, Class of Stock [Line Items]
Stock Repurchased During Period, Value	$ 50.0	$ 40.0
Two Thousand Seventeen Stock Repurchase Program [Member]
Equity, Class of Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	122.4
Retained Earnings [Member]
Equity, Class of Stock [Line Items]
Stock Repurchased During Period, Value	$ 41.6	$ 33.5
Maximum \| Two Thousand Seventeen Stock Repurchase Program [Member]
Equity, Class of Stock [Line Items]
Stock repurchase program approved amount			$ 600.0
Open Market Purchases [Member] \| Two Thousand Seventeen Stock Repurchase Program [Member]
Equity, Class of Stock [Line Items]
Stock Repurchased During Period, Shares	1.2
Accelerated Share Repurchases, Final Price Paid Per Share	$ 40.40
Stock Repurchased During Period, Value	$ 50.0