Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 87,303	$ 48,587
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	57,432	50,152
Stock-based compensation	34,880	39,405
Excess tax benefits from stock-based awards	(171)	(453)
Other non-cash items, net	207	307
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	35,874	41,782
Accounts payable and accrued expenses	3,373	(7,881)
Accrued compensation and benefits	(11,897)	1,589
Deferred revenue	42,951	52,228
Accrued and deferred income taxes	(40,349)	(28,111)
Other current assets and prepaid expenses	(21,077)	6,558
Other noncurrent assets and liabilities	(7,504)	(7,119)
Net cash provided by operating activities	181,022	197,044
Cash flows from investing activities:
Additions to property and equipment	(19,128)	(22,506)
Acquisitions of businesses, net of cash acquired	(220,817)	(1,170)
Net cash used by investing activities	(239,945)	(23,676)
Cash flows from financing activities:
Borrowings under credit facility	0	40,000
Repayments of borrowings under credit facility	(101,875)	(100,000)
Repurchases of common stock	(54,912)	(34,953)
Proceeds from issuance of common stock	3,412	15,315
Excess tax benefits from stock-based awards	171	453
Payments of withholding taxes in connection with vesting of stock-based awards	(14,974)	(20,893)
Net cash used by financing activities	(168,178)	(100,078)
Effect of exchange rate changes on cash and cash equivalents	(5,411)	(3,121)
Net (decrease) increase in cash and cash equivalents	(232,512)	70,169
Cash and cash equivalents, beginning of period	489,543	167,878
Cash and cash equivalents, end of period	$ 257,031	$ 238,047