Schedule of Effect of Derivative Instruments in Statement of Operations Recognized (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 29, 2020	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) on foreign currency transactions	$ 2.0	$ 3.2

Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration