Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2018	Jul. 01, 2017
Cash flows from operating activities:
Net income	$ 174,173	$ 133,370
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	38,735	31,576
Amortization of intangible assets	45,638	44,303
Gain on business combination	0	(5,416)
Deferred income taxes	18,380	1,964
Amortization of debt issuance cost	8,251	2,970
Stock-based compensation	24,069	19,078
Non-cash restructuring charges	964	4,395
Other non-cash expense	194	201
Changes in assets and liabilities, net of effect of acquisitions:
Accounts receivable	(27,520)	(23,519)
Inventories	(84,867)	4,067
Prepaid expenses and other assets	(7,712)	(3,902)
Other long-term assets	(5,369)	(3,319)
Accounts payable	3,484	6,535
Income taxes payable/receivable	9,720	28,319
Other current liabilities	(69,634)	39,849
Other long-term liabilities	4,487	5,729
Cash flows from discontinued operations	0	(918)
Net cash provided by operating activities	132,993	285,282
Cash flows from investing activities:
Purchases of property and equipment	(65,990)	(45,352)
Proceeds from dispositions of property and equipment	2,738	1,002
Purchases of available-for-sale securities	(54,323)	0
Proceeds from sales and maturities of available-for-sale securities	86,787	25,113
Acquisition of businesses, net of cash acquired	(45,448)	(740,481)
Proceeds from sale of discontinued operation	25,000	0
Proceeds from sale of other entities	6,250	0
Cash flows from discontinued operations	0	(649)
Other	470	0
Net cash used in investing activities	(44,516)	(760,367)
Cash flows from financing activities:
Short-term borrowings	64,815	7,602
Repayments of short-term borrowings	(65,718)	(29,240)
Proceeds from long-term borrowings	0	740,685
Repayments of long-term borrowings	(169,286)	(88,826)
Cash paid to subsidiaries’ minority shareholders	0	(816)
Issuance of common stock under employee stock option and purchase plans	10,574	8,111
Net settlement of restricted common stock	(36,292)	(15,690)
Repurchase of common stock	(100,000)	0
Debt issuance costs	0	(26,367)
Net cash provided by (used in) financing activities	(295,907)	595,459
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(3,379)	11,170
Net increase (decrease) in cash, cash equivalents and restricted cash	(210,809)	131,544
Cash, cash equivalents and restricted cash, beginning of period	457,087	354,347
Cash, cash equivalents and restricted cash, end of period	246,278	485,891
Non-cash investing and financing activities:
Unpaid property and equipment purchases	5,353	1,950
Use of previously owned equity shares in acquisition	0	20,685
Condensed consolidated statements of cash flows
Cash and cash equivalents	232,458	472,307
Restricted cash	1,082	1,060
Non-current restricted cash	$ 12,738	$ 12,524