Changes in Accumulated Other Comprehensive Income by Component Reclassifications Out of AOCI (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]
Net effect of swaps	$ 1,087	$ (1,377)	$ 1,031	$ (8,315)	$ 2,463	$ (8,141)
Income before taxes	211,305	248,449	148,604	162,714	114,337	142,393
Provision (benefit) for taxes	(49,403)	(58,025)	(26,340)	(34,026)	(12,557)	(24,030)
Net income	161,902	190,424	122,264	128,688	101,780	118,363
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income before taxes	1,985	1,986	5,957	12,146	7,942	11,972
Provision (benefit) for taxes	(307)	(307)	(922)	(1,843)	(1,228)	(1,816)
Net income	1,678	1,679	5,035	10,303	6,714	10,156
Interest Rate Contracts [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net effect of swaps	$ 1,985	$ 1,986	$ 5,957	$ 12,146	$ 7,942	$ 11,972