Reconciliation of Statutory U.S. Federal Tax Rate to Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Statutory rate	21.00%	21.00%	21.00%
State	2.00%	2.30%	2.30%
Research and development tax credit	(1.20%)	(1.40%)	(0.90%)
Tax on foreign earnings	1.10%	0.80%	0.90%
Other, net	(0.80%)	(1.00%)	(0.30%)
Effective income tax rate	22.10%	21.70%	23.00%