Derivative Instruments - Financial Information Related to Hedging of Net Assets Included in Consolidated Statement of Earnings (Detail) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Sep. 27, 2014 USD ($)	Sep. 28, 2013 USD ($)	Dec. 31, 2013 USD ($)	Sep. 27, 2014 Foreign Exchange Forward [Member] Euro/US Dollar [Member] EUR (€)	Dec. 31, 2013 Foreign Exchange Forward [Member] Euro/US Dollar [Member] EUR (€)	Sep. 27, 2014 Foreign Exchange Forward [Member] Pound/US Dollar [Member] GBP (£)	Dec. 31, 2013 Foreign Exchange Forward [Member] Pound/US Dollar [Member] GBP (£)
Derivative [Line Items]
Change in gains (losses) from foreign exchange derivatives	$ 3,211	$ (1,611)	$ 3,752	$ (892)
Gain (loss) on net foreign currency assets	(3,294)	1,438	(4,084)	159
Foreign exchange loss	(83)	(173)	(332)	(733)
Notional balance of outstanding contracts versus the dollar						36,786	41,021	2,942	0
Net fair value of outstanding contracts	$ (135)		$ (135)		$ 33