Schedule of Reconciliation of Effective Tax Rate (Detail)	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Income Tax Disclosure [Line Items]
US statutory federal tax rate	21.00%	21.00%	21.00%	21.00%
Discrete expense related to U.S. transition tax			3.90%	0.00%
Foreign taxes	(5.10%)	(4.40%)	(4.90%)	(3.70%)
International provisions of the U.S. Tax Cuts and Jobs Act of 2017	(2.80%)	(1.40%)	(0.60%)	(1.40%)
Tax credits	(1.80%)	(1.90%)	(2.20%)	(2.10%)
Discrete benefit related to equity compensation	(0.70%)	(0.10%)	(1.50%)	(2.20%)
Discrete benefit related to release of reserves for uncertain tax positions		(0.10%)	(6.90%)
Other, net	(0.10%)	1.70%	0.40%	2.00%
Effective tax rate	10.50%	14.80%	9.20%	13.60%