Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 30, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income	$ 57,126	$ 60,868
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation	15,750	13,281
Depreciation	17,274	13,589
Amortization of intangible assets	6,312	1,602
Amortization of discount and deferred financing costs on convertible debt	373	350
Contribution of common shares to savings and retirement plans	1,011	1,471
Non-cash restructuring (income) expense	720	0
Deferred income taxes	324	12,790
Excess tax benefit from share-based payments	(5,326)	(7,035)
Loss on disposals of assets	115	0
Provision for (recoveries) losses on accounts receivable	(45)	(68)
Changes in assets and liabilities net of acquired balances:
Receivables	(22,006)	(25,605)
Inventory	20,278	(16,995)
Other current and long-term assets	(5,269)	3,368
Accounts payable	(19,260)	8,568
Other current and long-term liabilities	9,855	(1,362)
Net cash provided by operating activities	77,232	64,822
Cash flows from investing activities:
Capital expenditures	(6,424)	(33,039)
Payments for acquisitions, net of cash acquired	0	(3,931)
Net cash used in investing activities	(6,424)	(36,970)
Cash flows from financing activities:
Retirement of 2007 Convertible Notes	(9,316)	0
Reacquisition of equity component of 2007 Convertible Notes	(5,610)	0
Payments to retire short term line of credit	0	(50,000)
Excess tax benefit from share-based payments	5,326	7,035
Change in restricted cash	(150)	5,466
Repurchase of common stock - payroll tax withholdings on equity awards	(15,355)	(18,434)
Repurchase of common stock - share repurchase program	(12,405)	(18,214)
Net proceeds from exercise of stock options	2,251	43,092
Net cash used in financing activities	(35,259)	(31,055)
Net (decrease) increase in cash and cash equivalents	35,549	(3,203)
Cash and cash equivalents at beginning of period	410,087	453,257
Cash and cash equivalents at end of period	445,636	450,054
Supplemental cash flow disclosures:
Income taxes paid	445	288
Interest paid	$ 53	$ 58