Stock-Based Compensation Expense (Detail)	3 Months Ended
	Apr. 01, 2018 USD ($) group $ / shares shares	Apr. 02, 2017 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, performance-based restricted stock, years	1 year
Vesting period, time-based restricted stock, years	3 years
Groups within the employee population | group	2
Estimated annual forfeiture rate for unvested options for senior management	8.00%
Estimated annual forfeiture rate for unvested options for all other employees	12.00%
Increase (decrease) to compensation expense	$ 1,283,000	$ 673,000
Weighted-average grant-date fair values, in dollars per share | $ / shares	$ 21.62	$ 14.95
Total intrinsic value	$ 28,088,000	$ 53,043,000
Total fair values of stock options vest	25,674,000	17,987,000
Unrecognized compensation expense	$ 63,749,000
Weighted average period to be recognized	2 years 7 days
Stock-based compensation expense	$ 13,194,000	7,483,000
Tax benefit from compensation expense	2,347,000	$ 2,439,000
Recognized period costs capitalized	$ 0
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	10,160,452
Expiration period from grant day	10 years