Accumulated Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 967,742	$ 2,114,894	$ 1,567,258	$ 2,233,788
Other comprehensive income, net of tax	(6,452)	(44,270)	2,875	(22,834)
Ending balance	556,245	$ 1,975,094	556,245	$ 1,975,094
Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(105,697)
Other comprehensive income, net of tax			491
Ending balance	(105,206)		(105,206)
Unrealized Gain (Loss) on Retirement Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(9,869)
Other comprehensive income, net of tax			34
Ending balance	(9,835)		(9,835)
Unrealized Gain (Loss) on Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(2,405)
Other comprehensive income, net of tax			2,350
Ending balance	(55)		(55)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(117,971)
Other comprehensive income, net of tax			2,875
Ending balance	$ (115,096)		$ (115,096)