Stock-Based Compensation Expense (Detail)	3 Months Ended
	Apr. 02, 2017 USD ($) group $ / shares shares	Apr. 03, 2016 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.39%	0.84%
Groups within the employee population | group	2
Percentage of stock options granted to senior management expected to vest	75.00%
Percentage of stock options granted to all other employees expected to vest	72.00%
Estimated annual forfeiture rate for unvested options for senior management	10.00%
Estimated annual forfeiture rate for unvested options for all other employees	12.00%
Increase (decrease) to compensation expense	$ 673,000	$ 334,000
Weighted-average grant-date fair values, in dollars per share | $ / shares	$ 29.90	$ 12.25
Total intrinsic value	$ 53,043,000	$ 3,724,000
Total fair values of stock options vest	17,987,000	15,337,000
Unrecognized compensation expense	$ 54,233,000
Weighted average period to be recognized	2 years 1 month 6 days
Stock-based compensation expense	$ 7,483,000	6,804,000
Tax benefit from compensation expense	2,439,000	$ 2,228,000
Recognized period costs capitalized	$ 0
Vesting period, performance-based restricted stock, years	1 year
Vesting period, time-based restricted stock, years	3 years
General Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for stock option plans	4 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under stock option plans | shares	6,258,551
Expiration period from grant day	10 years