CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 26, 2014	Sep. 27, 2013	Sep. 28, 2012
Cash flows from operating activities:
Net earnings	$ 403,703	$ 438,248	$ 427,049
Adjustments to reconcile net earnings to net cash provided by operating activities:
Share-based compensation expense	39,636	42,637	47,876
Tax benefits from exercises of share-based payment awards	10,900	10,708	7,888
Excess tax benefits from share-based compensation	(10,890)	(9,583)	(8,929)
Depreciation	57,678	58,527	56,103
Amortization of intangible assets	4,779	4,332	4,879
Deferred taxes	15,872	(3,946)	(2,349)
Impairment of a privately-held equity investment	7,725
Provision for doubtful accounts receivable	7,150	5,984	10,350
(Income) loss from equity investment in affiliate	822	(2,461)	(245)
Change in fair value of contingent consideration	(686)	(5,190)
Other, net	382	1,673	1,265
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	(74,501)	(43,301)	(87,434)
Inventories	(43,343)	(76,400)	(42,459)
Prepaid expenses and other assets	(3,235)	(15,694)	(47,029)
Accounts payable	1,971	7,784	19,275
Accrued expenses and other liabilities	(844)	(32,731)	37,748
Deferred revenues and advance payments from customers	31,867	74,598	68,787
Net cash provided by operating activities	448,986	455,185	492,775
Cash flows from investing activities:
Purchases of property, plant and equipment	(89,649)	(76,277)	(61,103)
Investment in available-for-sale corporate debt securities	(45,209)	(10,044)	(30,503)
Sale of a portion of investment in available-for-sale corporate debt security	38,075
Acquisitions of businesses, net of cash acquired	(31,500)		(28,241)
Notes receivable	(5,500)	(10,000)
Note repayments from related party			8,800
Net amounts paid to deferred compensation plan ("DCP") trust account		(309)	(2,960)
Other	692	359	(8,288)
Net cash used in investing activities	(133,091)	(96,271)	(122,295)
Cash flows from financing activities:
Repurchases of common stock	(627,742)	(419,933)	(257,440)
Proceeds from issuance of common stock to employees	99,655	129,582	60,332
Excess tax benefits from share-based compensation	10,890	9,583	8,929
Employees' taxes withheld and paid for restricted stock and restricted stock units	(8,764)	(9,560)	(10,122)
Net borrowings (repayments) under credit facility agreements		(155,000)	(26,400)
Borrowings under term loan facility		500,000
Repayments under term loan facility and other bank borrowings	(68,750)		(9,876)
Other	(756)	(3,026)	(99)
Net cash used in financing activities	(595,467)	51,646	(234,676)
Effects of exchange rate changes on cash and cash equivalents	10,986	2,731	4,309
Net increase (decrease) in cash and cash equivalents	(268,586)	413,291	140,113
Cash and cash equivalents at beginning of period	1,117,861	704,570	564,457
Cash and cash equivalents at end of period	$ 849,275	$ 1,117,861	$ 704,570