Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012
Cash Flows from Operating Activities:
Net income	$ 341,131	$ 436,002
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,256	25,786
Amortization of acquisition-related intangible assets	2,974	640
Stock-based compensation	73,011	70,790
Net gain on sale of available-for-sale securities	(129)	0
Amortization of investment, net	2,575	0
Deferred income tax benefit	(5,629)	(3,367)
Tax effect of employee stock plans	5,405	14,381
Excess tax benefit from employee stock plans	(4,165)	(20,790)
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable, net	(111,231)	(116,000)
Inventories	(2,494)	(35,569)
Other assets	29,517	5,478
Accounts payable and other liabilities	12,509	(34,670)
Deferred income and allowances on sales to distributors	95,961	120,475
Income taxes payable	(8,753)	(650)
Deferred compensation plan obligations	(5,489)	(2,001)
Net cash provided by operating activities	459,449	460,505
Cash Flows from Investing Activities:
Purchases of property and equipment	(31,216)	(53,712)
Proceeds from sales of deferred compensation plan securities, net	5,489	2,001
Purchases of available-for-sale securities	(258,809)	(819,662)
Proceeds from sale and maturity of available-for-sale securities	228,292	135,650
Acquisitions, net of cash acquired	(145,321)	0
Purchases of intangible assets	0	(2,280)
Purchases of other investments	(2,101)	(4,510)
Net cash used in investing activities	(203,666)	(742,513)
Cash Flows from Financing Activities:
Proceeds from issuance of common stock through various stock plans	38,748	37,514
Shares withheld for employee taxes	(24,787)	(30,529)
Payment of dividends to stockholders	(112,175)	(83,570)
Payment of debt assumed in acquisitions	(22,000)	0
Proceeds from issuance of long term debt	0	500,000
Repayment of credit facility	0	(500,000)
Long-term debt and credit facility issuance costs	0	(5,244)
Repurchases of common stock	(60,276)	(179,057)
Excess tax benefit from employee stock plans	4,165	20,790
Net cash used in financing activities	(176,325)	(240,096)
Net increase (decrease) in cash and cash equivalents	79,458	(522,104)
Cash and cash equivalents at beginning of period	2,876,627	3,371,933
Cash and cash equivalents at end of period	$ 2,956,085	$ 2,849,829