Changes in Accumulated Other Comprehensive Income by Component Changes in AOCI by Component (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended			12 Months Ended
	Sep. 28, 2014		Sep. 29, 2013		Sep. 28, 2014	Sep. 29, 2013		Sep. 28, 2014	Sep. 29, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	$ (18,595)		$ (16,043)		$ (15,008)	$ (28,500)		$ (19,503)	$ (32,057)
Other comprehensive income before reclassifications	4,023		(5,139)		(2,921)	(1,306)		(105)	2,398
Amounts reclassified from accumulated other comprehensive income	1,678	[1]	1,679	[1]	5,035	10,303	[1]	6,714	10,156
Net current-period other comprehensive income	5,701		(3,460)		2,114	8,997		6,609	12,554
Balance, ending	(12,894)		(19,503)		(12,894)	(19,503)		(12,894)	(19,503)
Other Comprehensive income before reclassification tax effect	(187)		0		928	(326)		615	(745)
Foreign currency translation adjustment, tax	(1,713)		(915)		(1,310)	(1,089)		(2,208)	(1,697)
Provision (benefit) for taxes	(49,403)		(58,025)		(26,340)	(34,026)		(12,557)	(24,030)
Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	(17,904)		(15,185)		(15,013)	(25,749)		(17,946)	(27,686)
Other comprehensive income before reclassifications	1,048		(4,440)		(5,200)	(2,500)		(3,946)	(416)
Amounts reclassified from accumulated other comprehensive income	1,678	[1]	1,679	[1]	5,035	10,303	[1]	6,714	10,156
Net current-period other comprehensive income	2,726		(2,761)		(165)	7,803		2,768	9,740
Balance, ending	(15,178)		(17,946)		(15,178)	(17,946)		(15,178)	(17,946)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	(691)		(858)		5	(2,751)		(1,557)	(4,371)
Other comprehensive income before reclassifications	2,975		(699)		2,279	1,194		3,841	2,814
Amounts reclassified from accumulated other comprehensive income	0	[1]	0	[1]	0	0	[1]	0	0
Net current-period other comprehensive income	2,975		(699)		2,279	1,194		3,841	2,814
Balance, ending	2,284		(1,557)		2,284	(1,557)		2,284	(1,557)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Provision (benefit) for taxes	$ (307)		$ (307)		$ (922)	$ (1,843)		$ (1,228)	$ (1,816)

[1] See Reclassifications Out of Accumulated Other Comprehensive Income table below for reclassification details.