Accumulated Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 556,245	$ 1,975,094	$ 1,567,258	$ 2,233,788
Other comprehensive (loss) income, net of tax	(4,485)	7,108	(1,610)	(15,726)
Ending balance	115,500	$ 1,876,432	115,500	$ 1,876,432
Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(105,697)
Other comprehensive (loss) income, net of tax			(4,403)
Ending balance	(110,100)		(110,100)
Unrealized Gain (Loss) on Retirement Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(9,869)
Other comprehensive (loss) income, net of tax			449
Ending balance	(9,420)		(9,420)
Unrealized Gain (Loss) on Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(2,405)
Other comprehensive (loss) income, net of tax			2,344
Ending balance	(61)		(61)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(117,971)
Other comprehensive (loss) income, net of tax			(1,610)
Ending balance	$ (119,581)		$ (119,581)