Summary of Significant Accounting Policies Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Significant Accounting Policies [Line Items]
Non-cash share-based compensation expense	$ 1,700	$ 3,000	$ 1,818	$ 6,505
Interest paid			17,400	11,300
Income tax payments			$ 53,300	$ 75,100
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	35.00%