Other Comprehensive Income - Components of Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Jun. 29, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on hedging transactions, Gross (recognized in OCI)	$ (563)	$ (6,997)	$ 3,096	$ (12,971)
Foreign currency translation adjustments	(8,222)	(8,763)	(8,222)	(8,763)	(8,404)	(8,721)	(8,775)	(8,961)
Unrealized gains (losses) on hedging transactions, Income tax (benefit) (recognized in OCI)	(118)	(1,749)	765	(3,500)
Unrealized gains (losses) on hedging transactions, Net (recognized in OCI)	(445)	(5,248)	2,331	(9,471)
Unrealized gains (losses) on investments, Gross (recognized in OCI)	518	484	(1,140)	1,131
Unrealized gains (losses) on investments, Income tax (benefit) (recognized in OCI)	157	138	(373)	353
Unrealized gains (losses) on investments, Net (recognized in OCI)	361	346	(767)	778
Foreign currency translation adjustments (recognized in OCI)	182	91	390	277
Total accumulated other comprehensive loss (recognized in OCI)	98	(4,811)	1,954	(8,416)
Unrealized gains (losses) on hedging transactions, Gross (reclassified from AOCI to income)	(749)	1,736	(2,648)	4,372
Unrealized gains (losses) on hedging transactions, Income tax (benefit) (reclassified from AOCI to income)	(187)	434	(662)	1,093
Unrealized gains (losses) on hedging transactions, Net (reclassified from AOCI to income)	(562)	1,302	(1,986)	3,279
Unrealized gains (losses) on investments, Gross (reclassified from AOCI to income)	106	74	380	224
Unrealized gains (losses) on investments, Income tax (benefit) (reclassified from AOCI to income)	34	28	119	85
Unrealized gains (losses) on investments, Net (reclassified from AOCI to income)	72	46	261	139
Foreign currency translation adjustments (reclassified from AOCI to income)	0	(79)	109	(79)
Total accumulated other comprehensive loss (reclassified from AOCI to income)	(490)	1,269	(1,616)	3,339
Unrealized gains (losses) on hedging transactions, Gross (Subtotal)	(1,312)	(5,261)	448	(8,599)
Unrealized gains losses on hedging transactions, (Income) tax (benefit) (Subtotal)	(305)	(1,315)	103	(2,407)
Unrealized gains (losses) on hedging transactions, Net (Subtotal)	(1,007)	(3,946)	345	(6,192)
Unrealized gains (losses) on investments, Gross (Subtotal)	624	558	(760)	1,355
Unrealized gains (losses) on investments, Income tax (benefit) (Subtotal)	191	166	(254)	438
Unrealized gains (losses) on investments, Net (Subtotal)	433	392	(506)	917
Foreign currency translation adjustments (Subtotal)	182	12	499	198
Total accumulated other comprehensive loss (Subtotal)	(392)	(3,542)	338	(5,077)
Total accumulated other comprehensive gains (losses)	(9,987)	(9,289)	(9,987)	(9,289)	(9,595)	(10,325)	(5,747)	(4,212)
Hedging [Member]
Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on hedging transactions, Gross	(2,133)	(1,244)	(2,133)	(1,244)	(821)	(2,581)	4,017	7,355
Unrealized gains (losses) on hedging transactions, Income tax (benefit)	(496)	(311)	(496)	(311)	(191)	(599)	1,004	2,096
Total accumulated other comprehensive gains (losses)	(1,637)	(933)	(1,637)	(933)	(630)	(1,982)	3,013	5,259
Investments [Member]
Other Comprehensive Income Loss [Line Items]
Unrealized gains (losses) on hedging transactions, Gross	(220)	558	(220)	558	(844)	540	0	(797)
Unrealized gains (losses) on hedging transactions, Income tax (benefit)	(92)	151	(92)	151	(283)	162	(15)	(287)
Total accumulated other comprehensive gains (losses)	$ (128)	$ 407	$ (128)	$ 407	$ (561)	$ 378	$ 15	$ (510)